{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,22]],"date-time":"2026-09-22T10:21:19Z","timestamp":1790072479245,"version":"4.0.1"},"reference-count":40,"publisher":"MDPI AG","issue":"10","license":[{"start":{"date-parts":[[2024,5,12]],"date-time":"2024-05-12T00:00:00Z","timestamp":1715472000000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Molecules"],"abstract":"<jats:p>Catalytic total oxidation is an effective technique for the treatment of industrial VOCs principally resulting from industrial processes using solvents and usually containing mono-aromatics (BTEX) and oxygenated compounds (acetone, ethanol, butanone). The aim of this work is to deposit gold nanoparticles on CoAl mixed oxide issued from layered double hydroxide (LDH) precursor by using the deposition precipitation (DP) method, which is applied with two modifications, labeled method (A) and method (B), in order to enhance the interaction of the HAuCl4 precursor with the support. Method (A) involves the hydrolysis of the HAuCl4 precursor after addition of the support, while in method (B), the gold precursor is hydrolyzed before adding the support. The two methods were applied using as support the CoAl mixed oxide and the LDH precursor. Samples were characterized by several physical chemical techniques and evaluated for ethanol total oxidation. Method (B) allowed the ethanol oxidation activity to be enhanced for the resulting Au\/CoAlOx catalysts thanks to the high surface concentration of Co2+ and improved reducibility at low temperature. The presence of gold permits to minimize the formation of by-products, notably, methanol, allowed for a total oxidation of ethanol at lower temperature than the corresponding support.<\/jats:p>","DOI":"10.3390\/molecules29102285","type":"journal-article","created":{"date-parts":[[2024,5,13]],"date-time":"2024-05-13T09:28:25Z","timestamp":1715592505000},"page":"2285","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":7,"title":["Synthesis of Gold Nanoparticles over CoAl Mixed Oxide for Ethanol Oxidation Reaction"],"prefix":"10.3390","volume":"29","author":[{"given":"Guillaume","family":"Rochard","sequence":"first","affiliation":[{"name":"Unit\u00e9 de Chimie Environnementale et Interactions sur le Vivant (UCEiV), Universit\u00e9 du Littoral C\u00f4te d\u2019Opale (ULCO), 59140 Dunkerque, France"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-1796-2575","authenticated-orcid":false,"given":"Eric","family":"Genty","sequence":"additional","affiliation":[{"name":"Unit\u00e9 de Chimie Environnementale et Interactions sur le Vivant (UCEiV), Universit\u00e9 du Littoral C\u00f4te d\u2019Opale (ULCO), 59140 Dunkerque, France"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jean-Marc","family":"Giraudon","sequence":"additional","affiliation":[{"name":"Unit\u00e9 de Catalyse et Chimie du Solide (UCCS), UMR 8181, Universit\u00e9 de Lille, CNRS, Centrale Lille, Universit\u00e9 Artois, 59000 Lille, France"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-7940-5128","authenticated-orcid":false,"given":"Christophe","family":"Poupin","sequence":"additional","affiliation":[{"name":"Unit\u00e9 de Chimie Environnementale et Interactions sur le Vivant (UCEiV), Universit\u00e9 du Littoral C\u00f4te d\u2019Opale (ULCO), 59140 Dunkerque, France"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-6420-1296","authenticated-orcid":false,"given":"Jean-Fran\u00e7ois","family":"Lamonier","sequence":"additional","affiliation":[{"name":"Unit\u00e9 de Catalyse et Chimie du Solide (UCCS), UMR 8181, Universit\u00e9 de Lille, CNRS, Centrale Lille, Universit\u00e9 Artois, 59000 Lille, France"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-9703-8579","authenticated-orcid":false,"given":"St\u00e9phane","family":"Siffert","sequence":"additional","affiliation":[{"name":"Unit\u00e9 de Chimie Environnementale et Interactions sur le Vivant (UCEiV), Universit\u00e9 du Littoral C\u00f4te d\u2019Opale (ULCO), 59140 Dunkerque, France"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-7695-6031","authenticated-orcid":false,"given":"Valeria","family":"La Parola","sequence":"additional","affiliation":[{"name":"Institute for the Study of Nanostructured Materials (ISMN)-CNR, Via Ugo La Malfa, 153, 90146 Palermo, Italy"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-5442-2469","authenticated-orcid":false,"given":"Leonarda Francesca","family":"Liotta","sequence":"additional","affiliation":[{"name":"Institute for the Study of Nanostructured Materials (ISMN)-CNR, Via Ugo La Malfa, 153, 90146 Palermo, Italy"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-5180-1348","authenticated-orcid":false,"given":"Renaud","family":"Cousin","sequence":"additional","affiliation":[{"name":"Unit\u00e9 de Chimie Environnementale et Interactions sur le Vivant (UCEiV), Universit\u00e9 du Littoral C\u00f4te d\u2019Opale (ULCO), 59140 Dunkerque, France"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2024,5,12]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","unstructured":"Rochard, G., Olivet, L., Tannous, M., Poupin, C., Siffert, S., and Cousin, R. (2021). Recent advances in the catalytic treatment of volatile organic compounds: A review based on the mixture effect. Catalysts, 11.","DOI":"10.3390\/catal11101218"},{"key":"ref_2","doi-asserted-by":"crossref","first-page":"2649","DOI":"10.1039\/C4CY01733A","article-title":"Low temperature catalytic oxidation of volatile organic compounds: A review","volume":"5","author":"Huang","year":"2015","journal-title":"Catal. Sci. Technol."},{"key":"ref_3","doi-asserted-by":"crossref","first-page":"121316","DOI":"10.1016\/j.seppur.2022.121316","article-title":"Boosting the VOCs purification over high-performance \u03b1-MnO2 separated from spent lithium-ion battery: Synergistic effect of metal doping and acid treatment","volume":"295","author":"Min","year":"2022","journal-title":"Sep. Purif. Technol."},{"key":"ref_4","doi-asserted-by":"crossref","unstructured":"Brunet, J., Genty, E., Barroo, C., Cazier, F., Poupin, C., Siffert, S., Thomas, D., de Weireld, G., de Bocarm\u00e9, T.V., and Cousin, R. (2018). The CoAlCeO mixed oxide: An alternative to palladium-based catalysts for total oxidation of industrial VOCs. Catalysts, 8.","DOI":"10.3390\/catal8020064"},{"key":"ref_5","doi-asserted-by":"crossref","first-page":"114370","DOI":"10.1016\/j.cattod.2023.114370","article-title":"Performance studies of Pt, Pd and PtPd supported on SBA-15 for wet CO and hydrocarbon oxidation","volume":"426","author":"Khan","year":"2024","journal-title":"Catal. Today"},{"key":"ref_6","doi-asserted-by":"crossref","first-page":"154702","DOI":"10.1016\/j.apsusc.2022.154702","article-title":"MnCo-Layered double hydroxides nanosheets supported Pd nanoparticles for complete catalytic oxidation of formaldehyde at room temperature","volume":"606","author":"Gong","year":"2022","journal-title":"Appl. Surf. Sci."},{"key":"ref_7","doi-asserted-by":"crossref","first-page":"13280","DOI":"10.1021\/acscatal.1c04262","article-title":"Thermokinetic and Spectroscopic Mapping of Carbon Monoxide Adsorption on Highly Dispersed Pt\/\u03b3-Al2O3","volume":"11","author":"Sangnier","year":"2021","journal-title":"ACS Catal."},{"key":"ref_8","doi-asserted-by":"crossref","first-page":"405","DOI":"10.1246\/cl.1987.405","article-title":"Novel gold catalysts for the oxidation of carbon monoxide at a temperature far below 0 \u00b0C","volume":"16","author":"Haruta","year":"1987","journal-title":"Chem. Lett."},{"key":"ref_9","doi-asserted-by":"crossref","first-page":"380","DOI":"10.1246\/cl.131232","article-title":"Size- and structure-specificity in catalysis by gold clusters","volume":"43","author":"Taketoshi","year":"2014","journal-title":"Chem. Lett."},{"key":"ref_10","doi-asserted-by":"crossref","first-page":"222","DOI":"10.1016\/j.apcatb.2012.05.047","article-title":"Supported gold catalysts for the total oxidation of volatile organic compounds","volume":"125","author":"Liotta","year":"2012","journal-title":"Appl. Catal. B Environ."},{"key":"ref_11","doi-asserted-by":"crossref","first-page":"367","DOI":"10.1016\/j.cattod.2007.12.141","article-title":"Effect of the preparation method on Au\/Ce-Ti-O catalysts activity for VOCs oxidation","volume":"137","author":"Lamallem","year":"2008","journal-title":"Catal. Today"},{"key":"ref_12","doi-asserted-by":"crossref","first-page":"2802","DOI":"10.1002\/ejic.201101236","article-title":"Catalytic Oxidation of Toluene and CO over Nanocatalysts Derived from Hydrotalcite-Like Compounds (X62+Al23+): Effect of the Bivalent Cation","volume":"2012","author":"Genty","year":"2012","journal-title":"Eur. J. Inorg. Chem."},{"key":"ref_13","doi-asserted-by":"crossref","first-page":"851","DOI":"10.3390\/catal5020851","article-title":"Co-Al mixed oxides prepared via LDH route using microwaves or ultrasound: Application for catalytic toluene total oxidation","volume":"5","author":"Genty","year":"2015","journal-title":"Catalysts"},{"key":"ref_14","doi-asserted-by":"crossref","first-page":"163","DOI":"10.1016\/j.apcatb.2019.01.081","article-title":"Influence of CO addition on the toluene total oxidation over Co based mixed oxide catalysts","volume":"247","author":"Genty","year":"2019","journal-title":"Appl. Catal. B Environ."},{"key":"ref_15","doi-asserted-by":"crossref","unstructured":"La Parola, V., Pantaleo, G., Liotta, L.F., Venezia, A.M., Gabrovska, M., Nikolova, D., and Tabakova, T. (2023). Gold and Ceria Modified NiAl Hydrotalcite Materials as Catalyst Precursors for Dry Reforming of Methane. Catalysts, 13.","DOI":"10.3390\/catal13030606"},{"key":"ref_16","doi-asserted-by":"crossref","first-page":"260","DOI":"10.1016\/j.apsusc.2019.05.083","article-title":"Co-doped MgAl-LDHs nanosheets supported Au nanoparticles for complete catalytic oxidation of HCHO at room temperature","volume":"487","author":"Li","year":"2019","journal-title":"Appl. Surf. Sci."},{"key":"ref_17","doi-asserted-by":"crossref","first-page":"187","DOI":"10.1016\/j.molcata.2005.02.032","article-title":"Effect of the preparation of supported gold particles on the catalytic activity in CO oxidation reaction","volume":"234","author":"Dobrosz","year":"2005","journal-title":"J. Mol. Catal. A Chem."},{"key":"ref_18","doi-asserted-by":"crossref","first-page":"191","DOI":"10.1016\/j.apcata.2004.03.004","article-title":"A new preparation method for the formation of gold nanoparticles on an oxide support","volume":"267","author":"Ivanova","year":"2004","journal-title":"Appl. Catal. A Gen."},{"key":"ref_19","doi-asserted-by":"crossref","first-page":"105","DOI":"10.1016\/j.jcat.2005.01.030","article-title":"Gold on titania catalysts for the oxidation of carbon monoxide: Control of pH during preparation with various gold contents","volume":"231","author":"Moreau","year":"2005","journal-title":"J. Catal."},{"key":"ref_20","doi-asserted-by":"crossref","first-page":"239","DOI":"10.1016\/j.jcat.2010.07.008","article-title":"Advances in the preparation of supported gold catalysts: Mechanism of deposition, simplification of the procedures and relevance of the elimination of chlorine","volume":"274","author":"Hugon","year":"2010","journal-title":"J. Catal."},{"key":"ref_21","doi-asserted-by":"crossref","unstructured":"Hutchings, G.H. (2006). Catalysis by Gold, Imperial College Press.","DOI":"10.1002\/chin.200530212"},{"key":"ref_22","unstructured":"Wu, H., and Liotta, L.F. (2014). Heterogeneous Gold Catalysts and Catalysis, The Royal Society of Chemistry."},{"key":"ref_23","doi-asserted-by":"crossref","first-page":"821","DOI":"10.1039\/b009320n","article-title":"In situ investigation of the thermal decomposition of Co\u2013Al hydrotalcite in different atmospheres","volume":"11","author":"Mul","year":"2001","journal-title":"J. Mater. Chem."},{"key":"ref_24","doi-asserted-by":"crossref","first-page":"572","DOI":"10.1016\/j.jechem.2023.03.033","article-title":"Simultaneously mastering operando strain and reconstruction effects via phase-segregation strategy for enhanced oxygen-evolving electrocatalysis","volume":"82","author":"Guan","year":"2023","journal-title":"J. Energy Chem."},{"key":"ref_25","doi-asserted-by":"crossref","first-page":"966","DOI":"10.3390\/catal3040966","article-title":"Influence of gold on hydrotalcite-like compound catalysts for toluene and CO total oxidation","volume":"3","author":"Genty","year":"2013","journal-title":"Catalysts"},{"key":"ref_26","doi-asserted-by":"crossref","first-page":"e202300213","DOI":"10.1002\/ejic.202300213","article-title":"Optimization of Mn-Mg-Al Mixed Oxides Composition on their Activity towards the Total Oxidation of Aromatic and Oxygenated VOCs","volume":"26","author":"Rochard","year":"2023","journal-title":"Eur. J. Inorg. Chem."},{"key":"ref_27","doi-asserted-by":"crossref","first-page":"223","DOI":"10.1016\/j.jcat.2017.07.014","article-title":"Synthesis and characterization of Au nano particles supported catalysts for partial oxidation of ethanol: Influence of solution pH, Au nanoparticle size, support structure and acidity","volume":"353","author":"Behravesh","year":"2017","journal-title":"J. Catal."},{"key":"ref_28","doi-asserted-by":"crossref","unstructured":"Cherepanova, S.V., Koemets, E.G., Gerasimov, E.Y., Simentsova, I.I., and Bulavchenko, O.A. (2023). Reducibility of Al3+-Modified Co3O4: Influence of Aluminum Distribution. Materials, 16.","DOI":"10.3390\/ma16186216"},{"key":"ref_29","doi-asserted-by":"crossref","first-page":"38","DOI":"10.1016\/0021-9517(85)90149-6","article-title":"Temperature-Programmed Reduction of CoO\/Al2O3 Catalysts","volume":"93","author":"Arnoldy","year":"1985","journal-title":"J. Catal."},{"key":"ref_30","doi-asserted-by":"crossref","first-page":"390","DOI":"10.1016\/0021-9517(86)90011-4","article-title":"An XPS and TPR Study of the Reduction of Promoted Cobalt-Kieselguhr Fisher-Tropsch Catalysts","volume":"406","author":"Sexton","year":"1986","journal-title":"J. Catal."},{"key":"ref_31","doi-asserted-by":"crossref","first-page":"544","DOI":"10.1016\/j.jhazmat.2011.01.073","article-title":"Deep oxidation of pollutants using gold deposited on a high surface area cobalt oxide prepared by a nanocasting route","volume":"187","author":"Solsona","year":"2011","journal-title":"J. Hazard. Mater."},{"key":"ref_32","doi-asserted-by":"crossref","first-page":"408","DOI":"10.1016\/j.jcat.2013.10.019","article-title":"Mesoporous Co3O4-supported gold nanocatalysts: Highly active for the oxidation of carbon monoxide, benzene, toluene, and o-xylene","volume":"309","author":"Liu","year":"2014","journal-title":"J. Catal."},{"key":"ref_33","doi-asserted-by":"crossref","first-page":"3203","DOI":"10.1039\/C9CY00436J","article-title":"Au\/Co promoted CeO2 catalysts for formaldehyde total oxidation at ambient temperature: Role of oxygen vacancies","volume":"9","author":"Rochard","year":"2019","journal-title":"Catal. Sci. Technol."},{"key":"ref_34","doi-asserted-by":"crossref","first-page":"112160","DOI":"10.1016\/j.mcat.2022.112160","article-title":"Hydrotalcite-Derived Aluminum-Doped Cobalt Oxides for Catalytic Benzene Combustion: Effect of Calcination Atmosphere","volume":"520","author":"Wan","year":"2022","journal-title":"Mol. Catal."},{"key":"ref_35","doi-asserted-by":"crossref","first-page":"257","DOI":"10.1016\/j.chemosphere.2018.03.198","article-title":"Oxidation of Acetone over Co-Based Catalysts Derived from Hierarchical Layer Hydrotalcite: Influence of Co\/Al Molar Ratios and Calcination Temperatures","volume":"204","author":"Zhao","year":"2018","journal-title":"Chemosphere"},{"key":"ref_36","doi-asserted-by":"crossref","first-page":"5381","DOI":"10.1039\/D1TA10652J","article-title":"The BaCe0.16Y0.04Fe0.8O3\u2212\u03b4 nanocomposite: A new high-performance cobalt-free triple-conducting cathode for protonic ceramic fuel cells operating at reduced temperatures","volume":"10","author":"Zou","year":"2022","journal-title":"J. Mater. Chem. A"},{"key":"ref_37","doi-asserted-by":"crossref","first-page":"1941","DOI":"10.1021\/cm703464p","article-title":"Rock Salt-Spinel Structural Transformation in Anodically Electrodeposited Mn-Co-O Nanocrystals","volume":"20","author":"Wei","year":"2008","journal-title":"Chem. Mater."},{"key":"ref_38","doi-asserted-by":"crossref","unstructured":"Liu, F., Wang, H., Sapi, A., Tatsumi, H., Zherebetskyy, D., Han, H.-L., Carl, L., and Somorjai, G. (2018). Molecular Orientations Change Reaction Kinetics and Mechanism: A Review on Catalytic Alcohol Oxidation in Gas Phase and Liquid Phase on Size-Controlled Pt Nanoparticles. Catalysts, 8.","DOI":"10.3390\/catal8060226"},{"key":"ref_39","doi-asserted-by":"crossref","unstructured":"Torbina, V.V., Vodyankin, A.A., Ten, S., Mamontov, G.V., Salaev, M.A., Sobolev, V.I., and Vodyankina, O.V. (2018). Ag-Based Catalysts in Heterogeneous Selective Oxidation of Alcohols: A Review. Catalysts, 8.","DOI":"10.3390\/catal8100447"},{"key":"ref_40","doi-asserted-by":"crossref","first-page":"81","DOI":"10.1016\/j.apcata.2008.05.038","article-title":"Total oxidation of propene at low temperature over Co3O4\u2013CeO2 mixed oxides: Role of surface oxygen vacancies and bulk oxygen mobility in the catalytic activity","volume":"347","author":"Liotta","year":"2008","journal-title":"Appl. Catal. A Gen."}],"container-title":["Molecules"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/www.mdpi.com\/1420-3049\/29\/10\/2285\/pdf","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2025,10,10]],"date-time":"2025-10-10T14:41:12Z","timestamp":1760107272000},"score":1,"resource":{"primary":{"URL":"https:\/\/www.mdpi.com\/1420-3049\/29\/10\/2285"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2024,5,12]]},"references-count":40,"journal-issue":{"issue":"10","published-online":{"date-parts":[[2024,5]]}},"alternative-id":["molecules29102285"],"URL":"https:\/\/doi.org\/10.3390\/molecules29102285","relation":{},"ISSN":["1420-3049"],"issn-type":[{"value":"1420-3049","type":"electronic"}],"subject":[],"published":{"date-parts":[[2024,5,12]]}}}