{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,1,16]],"date-time":"2026-01-16T19:45:10Z","timestamp":1768592710376,"version":"3.49.0"},"reference-count":71,"publisher":"MDPI AG","issue":"5","license":[{"start":{"date-parts":[[2020,5,2]],"date-time":"2020-05-02T00:00:00Z","timestamp":1588377600000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Nanomaterials"],"abstract":"<jats:p>This study aims to identify the role of the various electronic states of gold in the catalytic behavior of Au\/MxOy\/TiO2 (where MxOy are Fe2O3 or MgO) for the liquid phase oxidation of n-octanol, under mild conditions. For this purpose, Au\/MxOy\/TiO2 catalysts were prepared by deposition-precipitation with urea, varying the gold content (0.5 or 4 wt.%) and pretreatment conditions (H2 or O2), and characterized by low temperature nitrogen adsorption-desorption, X-ray powder diffraction (XRD), energy dispersive spectroscopy (EDX), scanning transmission electron microscopy-high angle annular dark field (STEM HAADF), diffuse reflectance Fourier transform infrared (DRIFT) spectroscopy of CO adsorption, temperature-programmable desorption (TPD) of ammonia and carbon dioxide, and X-ray photoelectron spectroscopy (XPS). Three states of gold were identified on the surface of the catalysts, Au0, Au1+ and Au3+, and their ratio determined the catalysts performance. Based on a comparison of catalytic and spectroscopic results, it may be concluded that Au+ was the active site state, while Au0 had negative effect, due to a partial blocking of Au0 by solvent. Au3+ also inhibited the oxidation process, due to the strong adsorption of the solvent and\/or water formed during the reaction. Density functional theory (DFT) simulations confirmed these suggestions. The dependence of selectivity on the ratio of Br\u00f8nsted acid centers to Br\u00f8nsted basic centers was revealed.<\/jats:p>","DOI":"10.3390\/nano10050880","type":"journal-article","created":{"date-parts":[[2020,5,4]],"date-time":"2020-05-04T03:29:39Z","timestamp":1588562979000},"page":"880","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":14,"title":["Effect of Gold Electronic State on the Catalytic Performance of Nano Gold Catalysts in n-Octanol Oxidation"],"prefix":"10.3390","volume":"10","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-2842-2542","authenticated-orcid":false,"given":"Ekaterina","family":"Pakrieva","sequence":"first","affiliation":[{"name":"Research School of Chemistry &amp; Applied Biomedical Sciences, National Research Tomsk Polytechnic University, Lenin Av. 30, 634050 Tomsk, Russia"},{"name":"Instituto de Cat\u00e1lisis y Petroleoqu\u00edmica, Consejo Superior de InvestigacionesCient\u00edficas, Marie Curie 2, 28049 Madrid, Spain"}]},{"given":"Ekaterina","family":"Kolobova","sequence":"additional","affiliation":[{"name":"Research School of Chemistry &amp; Applied Biomedical Sciences, National Research Tomsk Polytechnic University, Lenin Av. 30, 634050 Tomsk, Russia"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-2877-3684","authenticated-orcid":false,"given":"Yulia","family":"Kotolevich","sequence":"additional","affiliation":[{"name":"Centro de Nanociencias y Nanotecnolog\u00eda, Universidad Nacional Aut\u00f3noma de M\u00e9xico, P.O. Box 14, Ensenada 22800, Mexico"}]},{"given":"Laura","family":"Pascual","sequence":"additional","affiliation":[{"name":"Instituto de Cat\u00e1lisis y Petroleoqu\u00edmica, Consejo Superior de InvestigacionesCient\u00edficas, Marie Curie 2, 28049 Madrid, Spain"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-9913-4671","authenticated-orcid":false,"given":"S\u00f3nia A. C.","family":"Carabineiro","sequence":"additional","affiliation":[{"name":"LAQV-REQUIMTE, Department of Chemistry, NOVA School of Science and Technology, Universidade, NOVA de Lisboa, 2829-516 Caparica, Portugal"}]},{"given":"Andrey N.","family":"Kharlanov","sequence":"additional","affiliation":[{"name":"Department of Chemistry, Lomonosov Moscow State University, 1-3 Leninskiye Gory, GSP-1, 119991 Moscow, Russia"}]},{"given":"Daria","family":"Pichugina","sequence":"additional","affiliation":[{"name":"Department of Chemistry, Lomonosov Moscow State University, 1-3 Leninskiye Gory, GSP-1, 119991 Moscow, Russia"}]},{"given":"Nadezhda","family":"Nikitina","sequence":"additional","affiliation":[{"name":"Department of Chemistry, Lomonosov Moscow State University, 1-3 Leninskiye Gory, GSP-1, 119991 Moscow, Russia"}]},{"given":"Dmitrii","family":"German","sequence":"additional","affiliation":[{"name":"Research School of Chemistry &amp; Applied Biomedical Sciences, National Research Tomsk Polytechnic University, Lenin Av. 30, 634050 Tomsk, Russia"}]},{"given":"Trino A.","family":"Zepeda Partida","sequence":"additional","affiliation":[{"name":"Centro de Nanociencias y Nanotecnolog\u00eda, Universidad Nacional Aut\u00f3noma de M\u00e9xico, P.O. Box 14, Ensenada 22800, Mexico"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-4068-1889","authenticated-orcid":false,"given":"Hugo J.","family":"Tiznado Vazquez","sequence":"additional","affiliation":[{"name":"Centro de Nanociencias y Nanotecnolog\u00eda, Universidad Nacional Aut\u00f3noma de M\u00e9xico, P.O. Box 14, Ensenada 22800, Mexico"}]},{"given":"Mario H.","family":"Far\u00edas","sequence":"additional","affiliation":[{"name":"Centro de Nanociencias y Nanotecnolog\u00eda, Universidad Nacional Aut\u00f3noma de M\u00e9xico, P.O. Box 14, Ensenada 22800, Mexico"}]},{"given":"Nina","family":"Bogdanchikova","sequence":"additional","affiliation":[{"name":"Centro de Nanociencias y Nanotecnolog\u00eda, Universidad Nacional Aut\u00f3noma de M\u00e9xico, P.O. Box 14, Ensenada 22800, Mexico"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-7479-215X","authenticated-orcid":false,"given":"Vicente","family":"Cort\u00e9s Corber\u00e1n","sequence":"additional","affiliation":[{"name":"Instituto de Cat\u00e1lisis y Petroleoqu\u00edmica, Consejo Superior de InvestigacionesCient\u00edficas, Marie Curie 2, 28049 Madrid, Spain"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-9034-4733","authenticated-orcid":false,"given":"Alexey","family":"Pestryakov","sequence":"additional","affiliation":[{"name":"Research School of Chemistry &amp; Applied Biomedical Sciences, National Research Tomsk Polytechnic University, Lenin Av. 30, 634050 Tomsk, Russia"}]}],"member":"1968","published-online":{"date-parts":[[2020,5,2]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"114","DOI":"10.1016\/j.inoche.2012.12.014","article-title":"Direct oxidation of alcohols to carboxylic acids over ruthenium hydride catalyst with diphenylsulfoxide oxidant","volume":"29","author":"Barati","year":"2013","journal-title":"Inorg. Chem. Commun."},{"key":"ref_2","doi-asserted-by":"crossref","first-page":"211","DOI":"10.1016\/j.apcata.2013.09.040","article-title":"Green oxidation of fatty alcohols: Challenges and opportunities","volume":"474","year":"2014","journal-title":"Appl. Catal. A-Gen."},{"key":"ref_3","doi-asserted-by":"crossref","unstructured":"Tojo, G., and Fern\u00e1ndez, M. (2006). Oxidation of Primary Alcohols to Carboxylic Acids: A Guide to Current Common Practice, Springer.","DOI":"10.1007\/0-387-35432-8"},{"key":"ref_4","doi-asserted-by":"crossref","first-page":"5323","DOI":"10.1016\/S0040-4039(98)00987-3","article-title":"A novel chromium trioxide catalyzed oxidation of primary alcohols to the carboxylic acids","volume":"39","author":"Zhao","year":"1998","journal-title":"Tetrahedron Lett."},{"key":"ref_5","unstructured":"Augustine, R.L. (1996). Heterogeneous Catalysis for The Synthetic Chemist, Dekker."},{"key":"ref_6","doi-asserted-by":"crossref","first-page":"381","DOI":"10.1002\/(SICI)1097-4660(199704)68:4<381::AID-JCTB620>3.0.CO;2-3","article-title":"Catalysis: The key to waste minimization","volume":"68","author":"Sheldon","year":"1997","journal-title":"J. Chem. Tech. Biotechnol."},{"key":"ref_7","first-page":"243","article-title":"Chromium catalyzed oxidation of (homo)allylic and (homo)propargylic alcohols with sodium periodate to ketones or carboxylic acids","volume":"2","author":"Bouttemy","year":"2002","journal-title":"Synlett"},{"key":"ref_8","doi-asserted-by":"crossref","first-page":"157","DOI":"10.1016\/S0920-5861(99)00317-X","article-title":"New developments in catalytic alcohol oxidation for fine chemicals synthesis","volume":"57","author":"Sheldon","year":"2000","journal-title":"Catal. Today"},{"key":"ref_9","doi-asserted-by":"crossref","unstructured":"Werpy, T., and Petersen, G. (2004). Top Value Added Chemicals from Biomass: Volume I\u2014Results of Screening for Potential Candidates from Sugars and Synthesis Gas.","DOI":"10.2172\/15008859"},{"key":"ref_10","doi-asserted-by":"crossref","first-page":"11572","DOI":"10.1021\/ja020444q","article-title":"Controlled synthesis of hydroxyl apatite-supported palladium complexes as highly efficient heterogeneous catalysts","volume":"124","author":"Mori","year":"2002","journal-title":"J. Am. Chem. Soc."},{"key":"ref_11","doi-asserted-by":"crossref","first-page":"6750","DOI":"10.1021\/jo9906734","article-title":"Palladium(II)-catalyzed oxidation of alcohols to aldehydes and ketones by molecular oxygen","volume":"64","author":"Nishimura","year":"1999","journal-title":"J. Org. Chem."},{"key":"ref_12","doi-asserted-by":"crossref","first-page":"77","DOI":"10.1016\/S1381-1169(01)00410-1","article-title":"Oxidation of primary alcohols to aldehydes with oxygen catalyzed by tetra-npropylammoniumperruthenate","volume":"180","author":"Hasan","year":"2002","journal-title":"J. Mol. Catal. A-Chem."},{"key":"ref_13","doi-asserted-by":"crossref","first-page":"7144","DOI":"10.1021\/ja001325i","article-title":"Creation of a monomeric Ru species on the surface of hydroxyapatite as an efficient heterogeneous catalyst for aerobic alcohol oxidation","volume":"122","author":"Yamaguchi","year":"2000","journal-title":"J. Am. Chem. Soc."},{"key":"ref_14","doi-asserted-by":"crossref","first-page":"10","DOI":"10.1016\/j.jcat.2012.11.018","article-title":"Selective oxidation of alcohols to aldehydes\/ketones over copper oxide-supported gold catalysts","volume":"299","author":"Wang","year":"2013","journal-title":"J. Catal."},{"key":"ref_15","doi-asserted-by":"crossref","first-page":"8012","DOI":"10.1002\/chem.200903450","article-title":"Gold Catalysis: In situ EXAFS study of homogeneous oxidative esterification","volume":"16","author":"Hashmi","year":"2010","journal-title":"Chem. Eur. J."},{"key":"ref_16","doi-asserted-by":"crossref","first-page":"362","DOI":"10.1126\/science.1120560","article-title":"Solvent-free oxidation of primary alcohols to aldehydes using Au-Pd\/TiO2catalysts","volume":"311","author":"Enache","year":"2006","journal-title":"Science"},{"key":"ref_17","doi-asserted-by":"crossref","first-page":"1211","DOI":"10.1002\/cctc.201601442","article-title":"Supported gold nanoparticles as reusable catalysts for oxidation reactions of industrial significance","volume":"9","author":"Martins","year":"2017","journal-title":"ChemCatChem"},{"key":"ref_18","doi-asserted-by":"crossref","unstructured":"Kohlpaintner, C., Schulte, M., Falbe, J., Lappe, P., Weber, J., and Frey, G.D. (2013). Aldehydes, Araliphatic. Ullmann\u2019s Encyclopedia of Industrial Chemistry, Wiley-VCH Verlag GmbH.","DOI":"10.1002\/14356007.m01_m03.pub2"},{"key":"ref_19","doi-asserted-by":"crossref","first-page":"685","DOI":"10.1351\/pac200173040685","article-title":"Lexicon of lipid nutrition (IUPAC Technical Report)","volume":"73","author":"Dieffenbacher","year":"2001","journal-title":"Pure Appl. Chem."},{"key":"ref_20","first-page":"30080","article-title":"Caprylic (Octanoic) Acid registration review final decision","volume":"74","year":"2009","journal-title":"Federal Register."},{"key":"ref_21","doi-asserted-by":"crossref","first-page":"1451","DOI":"10.1172\/JCI83621","article-title":"Dose-escalation study of octanoic acid in patients with essential tremor","volume":"126","author":"Voller","year":"2016","journal-title":"J. Clin. Invest."},{"key":"ref_22","doi-asserted-by":"crossref","first-page":"1882","DOI":"10.1002\/lary.27695","article-title":"The effect of octanoic acid on essential voice tremor: A Double-Blind, Placebo-Controlled Study","volume":"129","author":"Lowell","year":"2018","journal-title":"Laryngoscope"},{"key":"ref_23","unstructured":"PubChem (2020, March 20). \u201cOctanoic acid\u201d, Available online: https:\/\/pubchem.ncbi.nlm.nih.gov\/compound\/379."},{"key":"ref_24","doi-asserted-by":"crossref","first-page":"146","DOI":"10.1016\/j.apcata.2012.05.014","article-title":"Silica-supported Au\u2013Cu alloy nanoparticles as an efficient catalyst for selective oxidation of alcohols","volume":"433\u2013434","author":"Li","year":"2012","journal-title":"Appl. Catal. A-Gen."},{"key":"ref_25","doi-asserted-by":"crossref","first-page":"1027","DOI":"10.1016\/j.catcom.2007.10.010","article-title":"Aerobic oxidation of alcohols catalyzed by gold nanoparticles supported on gallia polymorphs","volume":"9","author":"Su","year":"2008","journal-title":"Catal. Commun."},{"key":"ref_26","doi-asserted-by":"crossref","first-page":"13362","DOI":"10.1021\/jp105666f","article-title":"Metal-organic framework supported gold nanoparticles as a highly active heterogeneous catalyst for aerobic oxidation of alcohols","volume":"114","author":"Liu","year":"2010","journal-title":"J. Phys. Chem. C"},{"key":"ref_27","doi-asserted-by":"crossref","first-page":"175","DOI":"10.1016\/j.jcat.2007.03.007","article-title":"Gold supported on Cu\u2013Mg\u2013Al-mixed oxides: Strong enhancement of activity in aerobic alcohol oxidation by concerted effect of copper and magnesium","volume":"248","author":"Haider","year":"2007","journal-title":"J. Catal."},{"key":"ref_28","doi-asserted-by":"crossref","first-page":"110674","DOI":"10.1016\/j.mcat.2019.110674","article-title":"The effect of support properties on n-octanol oxidation performed on gold\u2013silver catalysts supported on MgO, ZnO and Nb2O5","volume":"482","author":"Kaskow","year":"2020","journal-title":"J. Mol. Catal."},{"key":"ref_29","doi-asserted-by":"crossref","first-page":"1","DOI":"10.1016\/j.molcata.2016.09.003","article-title":"n-Octanol oxidation on Au\/TiO2 catalysts promoted with La and Ce oxides","volume":"427","author":"Kotolevich","year":"2017","journal-title":"J. Mol. Catal."},{"key":"ref_30","doi-asserted-by":"crossref","first-page":"104","DOI":"10.1016\/j.cattod.2016.05.002","article-title":"Au\/TiO2 catalysts promoted with Fe and Mg for n-octanol oxidation under mild conditions","volume":"278","author":"Kotolevich","year":"2016","journal-title":"Catal. Today"},{"key":"ref_31","doi-asserted-by":"crossref","first-page":"127","DOI":"10.1016\/j.cattod.2018.04.046","article-title":"Selective oxidation of n-octanol on unmodified and La-modified nanogold catalysts: Effect of metal content","volume":"333C","author":"Kolobova","year":"2019","journal-title":"Catal. Today"},{"key":"ref_32","doi-asserted-by":"crossref","first-page":"1615","DOI":"10.1002\/cctc.201801566","article-title":"Green oxidation of n-octanol on supported nanogold catalysts: Formation of gold active sites under combined effect of gold content, additive nature and redox pretreatment","volume":"11","author":"Pakrieva","year":"2019","journal-title":"ChemCatChem"},{"key":"ref_33","doi-asserted-by":"crossref","unstructured":"Pakrieva, E., Ribeiro, A.P.C., Kolobova, E., Martins, L.M.D.R.S., Carabineiro, S.A.C., German, D., Pichugina, D., Jiang, C., Pombeiro, A.J.L., and Bogdanchikova, N. (2020). Supported gold nanoparticles as catalysts in peroxidative and aerobic oxidation of 1-phenylethanol under mild conditions. Nanomaterials, 10.","DOI":"10.3390\/nano10010151"},{"key":"ref_34","doi-asserted-by":"crossref","first-page":"7634","DOI":"10.1021\/jp0144810","article-title":"Alternative methods for the preparation of gold nanoparticles supported on TiO2","volume":"106","author":"Zanella","year":"2002","journal-title":"J. Phys Chem. B"},{"key":"ref_35","doi-asserted-by":"crossref","first-page":"768","DOI":"10.1016\/j.cattod.2005.07.008","article-title":"Influence of the conditions of thermal treatments and of storage on the size of the gold particles in Au\/TiO2 samples","volume":"107\u2013108","author":"Zanella","year":"2005","journal-title":"Catal. Today"},{"key":"ref_36","doi-asserted-by":"crossref","first-page":"3865","DOI":"10.1103\/PhysRevLett.77.3865","article-title":"Generalized Gradient Approximation Made Simple","volume":"77","author":"Perdew","year":"1996","journal-title":"Phys. Rev. Lett."},{"key":"ref_37","doi-asserted-by":"crossref","first-page":"114309","DOI":"10.1063\/1.2179419","article-title":"Structural study of gold clusters","volume":"124","author":"Xiao","year":"2006","journal-title":"J. Chem. Phys."},{"key":"ref_38","doi-asserted-by":"crossref","first-page":"11507","DOI":"10.1021\/jp212367z","article-title":"A structural and stability evaluation of Au12 from an isolated cluster to the deposited material","volume":"116","author":"Mukhamedzyanova","year":"2012","journal-title":"J. Phys. Chem. C"},{"key":"ref_39","doi-asserted-by":"crossref","first-page":"6817","DOI":"10.1021\/jp4040437","article-title":"Formation of H2O2 on Au20 and Au19Pd clusters: Understanding the structure effect on the atomic level","volume":"117","author":"Beletskaya","year":"2013","journal-title":"J. Phys. Chem. A"},{"key":"ref_40","doi-asserted-by":"crossref","first-page":"820","DOI":"10.1007\/s11172-005-0329-x","article-title":"PRIRODA-04: A Quantum-Chemical Program Suite. New possibilities in the study of molecular systems with the application of parallel computing","volume":"54","author":"Laikov","year":"2005","journal-title":"Russ. Chem. Bull."},{"key":"ref_41","unstructured":"Sadovnichy, V., Tikhonravov, A., Voevodin, V., and Opanasenko, V. (2013). Contemporary High Performance Computing: From Petascale Toward Exascale, CRC Press, Chapman & Hall\/CRC Computational Science."},{"key":"ref_42","doi-asserted-by":"crossref","unstructured":"Kolobova, E., Kotolevich, Y., Pakrieva, E.G., Mamontov, G., Farias, M.H., Bogdanchikova, N., and Pestryakov, A. (2016). Causes of activation and deactivation of modified nanogold catalysts during prolonged storage and redox treatments. Molecules, 21.","DOI":"10.3390\/molecules21040486"},{"key":"ref_43","doi-asserted-by":"crossref","first-page":"2243","DOI":"10.1002\/cssc.201200324","article-title":"Base-free direct oxidation of 1-octanol to octanoic acid and its octyl ester over supported gold catalysts","volume":"5","author":"Ishida","year":"2012","journal-title":"ChemSusChem"},{"key":"ref_44","doi-asserted-by":"crossref","first-page":"180","DOI":"10.1007\/s12274-010-0068-7","article-title":"Gold supported on metal oxides for carbon monoxide oxidation","volume":"4","author":"Carabineiro","year":"2011","journal-title":"Nano Res."},{"key":"ref_45","doi-asserted-by":"crossref","first-page":"205","DOI":"10.1016\/S0926-3373(01)00337-X","article-title":"Selective reduction of NO to N2 in the presence of oxygen over supported silver catalysts","volume":"37","author":"Furusawa","year":"2002","journal-title":"Appl. Catal. B-Environ."},{"key":"ref_46","doi-asserted-by":"crossref","first-page":"1331","DOI":"10.1126\/science.1159639","article-title":"Identification of active gold nanoclusters on iron oxide supports for CO oxidation","volume":"321","author":"Herzing","year":"2008","journal-title":"Science"},{"key":"ref_47","doi-asserted-by":"crossref","first-page":"62","DOI":"10.1016\/j.cossms.2008.07.003","article-title":"Catalysis by very small Au clusters","volume":"11","author":"Buratto","year":"2007","journal-title":"Curr. Opin. Solid State Mater. Sci."},{"key":"ref_48","unstructured":"Chastain, J. (1992). Handbook of X-Ray Photoelectron Spectroscopy, Perkin-Elmer Corporatio."},{"key":"ref_49","doi-asserted-by":"crossref","first-page":"215","DOI":"10.1002\/sia.2180","article-title":"XPS study of supported gold catalysts: The role of Au0and Au+\u03b4species as active sites","volume":"38","author":"Casaletto","year":"2006","journal-title":"Surf. Interface Anal."},{"key":"ref_50","doi-asserted-by":"crossref","first-page":"148","DOI":"10.1016\/j.jcat.2012.05.009","article-title":"Gold nanoparticles supported on magnesium oxide as catalysts for the aerobic oxidation of alcohols under alkali-free conditions","volume":"292","author":"Costa","year":"2012","journal-title":"J. Catal."},{"key":"ref_51","doi-asserted-by":"crossref","first-page":"6","DOI":"10.1016\/j.colsurfa.2012.04.030","article-title":"Synthesis of core\u2013shell Au@Pt nanoparticles supported on Vulcan XC-72 carbon and their electrocatalytic activities for methanol oxidation","volume":"406","author":"Feng","year":"2012","journal-title":"Colloids Surf. A"},{"key":"ref_52","doi-asserted-by":"crossref","first-page":"19062","DOI":"10.1021\/jp505552v","article-title":"Direct photocatalytic conversion of aldehydes to esters using supported gold nanoparticles under visible light irradiation at room temperature","volume":"118","author":"Zhang","year":"2014","journal-title":"J. Phys. Chem. C"},{"key":"ref_53","doi-asserted-by":"crossref","first-page":"41","DOI":"10.1016\/j.jiec.2014.06.023","article-title":"Activity and stability of Au\/CeO2-Fe2O3 catalysts for the hydrogen production via oxidative steam reforming of methanol","volume":"22","author":"Pojanavaraphan","year":"2015","journal-title":"J Ind. Eng. Chem."},{"key":"ref_54","doi-asserted-by":"crossref","first-page":"9929","DOI":"10.1021\/jp960593t","article-title":"Surface characterization study of Au\/\u03b1-Fe2O3and Au\/Co3O4low-temperature CO oxidation catalysts","volume":"100","author":"Epling","year":"1996","journal-title":"J. Phys. Chem."},{"key":"ref_55","doi-asserted-by":"crossref","first-page":"13443","DOI":"10.1016\/j.ijhydene.2015.07.148","article-title":"Activity of Au\/Fe2O3-TiO2 catalyst for preferential CO oxidation","volume":"40","author":"Luengnaruemitchai","year":"2015","journal-title":"Int. J. Hydrog. Energy"},{"key":"ref_56","doi-asserted-by":"crossref","first-page":"1196","DOI":"10.1016\/j.catcom.2009.01.014","article-title":"Redox chemistry of gold in a Au\/FeOx\/CeO2 CO oxidation catalyst","volume":"10","author":"Penkova","year":"2009","journal-title":"Catal. Commun."},{"key":"ref_57","doi-asserted-by":"crossref","first-page":"7","DOI":"10.1016\/0926-860X(94)80330-7","article-title":"Active electronic states of silver catalysts for methanol selective oxidation","volume":"120","author":"Pestryakov","year":"1994","journal-title":"Appl. Catal. A-Gen."},{"key":"ref_58","doi-asserted-by":"crossref","first-page":"121","DOI":"10.1016\/j.apcata.2007.07.039","article-title":"On the nature of active gold species in zeolites in CO oxidation","volume":"331","author":"Simakov","year":"2007","journal-title":"Appl. Catal. A-Gen."},{"key":"ref_59","doi-asserted-by":"crossref","first-page":"40","DOI":"10.1016\/j.fuel.2012.09.064","article-title":"Effect of redox treatments on activation and deactivation of gold nanospecies supported on mesoporous silica in CO oxidation","volume":"110","author":"Bogdanchikova","year":"2013","journal-title":"Fuel"},{"key":"ref_60","doi-asserted-by":"crossref","first-page":"273","DOI":"10.1023\/A:1019081727173","article-title":"FT-IR study of Au\/Fe2O3 catalysts for CO oxidation at low temperature","volume":"47","author":"Minico","year":"1997","journal-title":"Catal. Lett."},{"key":"ref_61","doi-asserted-by":"crossref","first-page":"307","DOI":"10.1016\/S0360-0564(02)47008-3","article-title":"Characterization of oxide surfaces and zeolites by carbon monoxide as an IR probe molecule","volume":"47","author":"Hadjiivanov","year":"2002","journal-title":"Adv. Catal."},{"key":"ref_62","doi-asserted-by":"crossref","unstructured":"Qiu, S., Ohnishi, R., and Ichikawa, M. (1992). Novel preparation of gold(I) carbonyls and nitrosyls in NaY zeolite and their catalytic activity for NO reduction with CO. J. Chem. Soc. Chem. Commun., 1425\u20131427.","DOI":"10.1039\/c39920001425"},{"key":"ref_63","doi-asserted-by":"crossref","first-page":"795","DOI":"10.1002\/cite.200700029","article-title":"Characterization of the oxidation states of supported gold species by IR spectroscopy of adsorbed CO","volume":"79","author":"Mihaylov","year":"2007","journal-title":"Chem. Ing. Tech."},{"key":"ref_64","doi-asserted-by":"crossref","first-page":"470","DOI":"10.1016\/j.molcata.2012.07.027","article-title":"Au\/Co3O4-TiO2catalysts for preferential oxidation of CO in H2stream","volume":"363\u2013364","author":"Chen","year":"2012","journal-title":"J. Mol.Catal. A-Chem."},{"key":"ref_65","doi-asserted-by":"crossref","first-page":"1675","DOI":"10.1002\/ente.201700837","article-title":"Cascade conversion of cellobiose to gluconic acid: The large impact of the small modification of electronic interaction on the performance of Au\/TiO2 bifunctional catalysts","volume":"6","author":"Eblagon","year":"2018","journal-title":"Energy Technol."},{"key":"ref_66","doi-asserted-by":"crossref","first-page":"219","DOI":"10.1016\/j.surfrep.2007.03.002","article-title":"Oxygen vacancies in transition metal and rare earth oxides: Current state of understanding and remaining challenges","volume":"62","author":"Hofmann","year":"2007","journal-title":"Surf. Sci. Rep."},{"key":"ref_67","doi-asserted-by":"crossref","first-page":"571","DOI":"10.1016\/j.matchemphys.2017.07.054","article-title":"NaBH4 modified TiO2: Defect site enhancement related to its photocatalytic activity","volume":"199","author":"Ariyanti","year":"2017","journal-title":"Mater. Chem. Phys."},{"key":"ref_68","doi-asserted-by":"crossref","first-page":"39","DOI":"10.1016\/S0045-6535(02)00486-1","article-title":"The enhancement of TiO2 photocatalytic activity by hydrogen thermal treatment","volume":"50","author":"Liu","year":"2003","journal-title":"Chemosphere"},{"key":"ref_69","doi-asserted-by":"crossref","first-page":"859","DOI":"10.1134\/S0023158408060104","article-title":"Surface acidity and basicity of oxide catalysts: From aqueous suspensions to in situ measurements","volume":"49","author":"Glazneva","year":"2008","journal-title":"Kinet. Catal."},{"key":"ref_70","doi-asserted-by":"crossref","unstructured":"Mihaylov, M., Ivanova, E., Hao, Y., Hadjiivanov, K., Gates, B.C., and Knozinger, H. (2008). Oxidation by CO2 of Au0 species on La2O3-supported gold clusters. Chem. Commun., 175\u2013177.","DOI":"10.1039\/B713106B"},{"key":"ref_71","doi-asserted-by":"crossref","first-page":"18973","DOI":"10.1021\/jp805212w","article-title":"Gold supported on La2O3: Structure and reactivity with CO2 and implications for CO oxidation catalysis","volume":"112","author":"Mihaylov","year":"2008","journal-title":"J. Phys. Chem. C"}],"container-title":["Nanomaterials"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/www.mdpi.com\/2079-4991\/10\/5\/880\/pdf","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2025,10,13]],"date-time":"2025-10-13T13:32:29Z","timestamp":1760362349000},"score":1,"resource":{"primary":{"URL":"https:\/\/www.mdpi.com\/2079-4991\/10\/5\/880"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2020,5,2]]},"references-count":71,"journal-issue":{"issue":"5","published-online":{"date-parts":[[2020,5]]}},"alternative-id":["nano10050880"],"URL":"https:\/\/doi.org\/10.3390\/nano10050880","relation":{},"ISSN":["2079-4991"],"issn-type":[{"value":"2079-4991","type":"electronic"}],"subject":[],"published":{"date-parts":[[2020,5,2]]}}}