{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,1,19]],"date-time":"2026-01-19T00:16:31Z","timestamp":1768781791626,"version":"3.49.0"},"reference-count":58,"publisher":"MDPI AG","issue":"5","license":[{"start":{"date-parts":[[2021,3,1]],"date-time":"2021-03-01T00:00:00Z","timestamp":1614556800000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Sensors"],"abstract":"<jats:p>Gadolinium metal-organic frameworks (Gd-MOFs) and Eu-doped Gd-MOFs have been synthesized through a one-pot green approach using commercially available reagents. The 1,4-benzenedicarboxylic acid (H2-BDC) and 2,6-naphthalenedicarboxylic acid (H2-NDC) were chosen as ditopic organic linkers to build the 3D structure of the network. The Gd-MOFs were characterized using powder X-ray diffraction (XRD), FT-IR spectroscopy, field emission scanning electron microscopy (FE-SEM) and N2 adsorption\u2013desorption analysis. The Gd-MOF structures were attributed comparing the XRD patterns, supported by the FT-IR spectra, with data reported in the literature for Ln-MOFs of similar lanthanide ionic radius. FE-SEM characterization points to the effect of the duration of the synthesis to a more crystalline and organized structure, with grain dimensions increasing upon increasing reaction time. The total surface area of the MOFs has been determined from the application of the Brunauer\u2013Emmett\u2013Teller method. The study allowed us to correlate the processing conditions and ditopic linker dimension to the network surface area. Both Gd-MOF and Eu-doped Gd-MOF have been tested for sensing of the inorganic ions such as Fe3+ and Cr2O72\u2212.<\/jats:p>","DOI":"10.3390\/s21051679","type":"journal-article","created":{"date-parts":[[2021,3,1]],"date-time":"2021-03-01T10:25:18Z","timestamp":1614594318000},"page":"1679","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":17,"title":["A Facile One-Pot Approach to the Synthesis of Gd-Eu Based Metal-Organic Frameworks and Applications to Sensing of Fe3+ and Cr2O72\u2212 Ions"],"prefix":"10.3390","volume":"21","author":[{"given":"Roberta","family":"Puglisi","sequence":"first","affiliation":[{"name":"Dipartimento di Scienze Chimiche, Universit\u00e0 degli Studi di Catania, Viale Andrea Doria 6, I-95125 Catania, Italy"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-5382-8205","authenticated-orcid":false,"given":"Anna L.","family":"Pellegrino","sequence":"additional","affiliation":[{"name":"Dipartimento di Scienze Chimiche, Universit\u00e0 degli Studi di Catania, INSTM UdR Catania, Viale Andrea Doria 6, I-95125 Catania, Italy"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-2773-0017","authenticated-orcid":false,"given":"Roberto","family":"Fiorenza","sequence":"additional","affiliation":[{"name":"Dipartimento di Scienze Chimiche, Universit\u00e0 degli Studi di Catania, Viale Andrea Doria 6, I-95125 Catania, Italy"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-3060-0918","authenticated-orcid":false,"given":"Salvatore","family":"Scir\u00e8","sequence":"additional","affiliation":[{"name":"Dipartimento di Scienze Chimiche, Universit\u00e0 degli Studi di Catania, Viale Andrea Doria 6, I-95125 Catania, Italy"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-7483-3070","authenticated-orcid":false,"given":"Graziella","family":"Malandrino","sequence":"additional","affiliation":[{"name":"Dipartimento di Scienze Chimiche, Universit\u00e0 degli Studi di Catania, INSTM UdR Catania, Viale Andrea Doria 6, I-95125 Catania, Italy"}]}],"member":"1968","published-online":{"date-parts":[[2021,3,1]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"5414","DOI":"10.1002\/anie.201505581","article-title":"Metal-Organic Framework (MOF) Compounds: Photocatalysts for Redox Reactions and Solar Fuel Production","volume":"55","author":"Dhakshinamoorthy","year":"2016","journal-title":"Angew. Chem. Int. Ed."},{"key":"ref_2","doi-asserted-by":"crossref","first-page":"3501","DOI":"10.1039\/C4CC09596K","article-title":"Metal-organic framework materials for light-harvesting and energy transfer","volume":"51","author":"So","year":"2015","journal-title":"Chem. Commun."},{"key":"ref_3","doi-asserted-by":"crossref","first-page":"2002563","DOI":"10.1002\/adma.202002563","article-title":"Recent Progress on Microfine Design of Metal-Organic Frameworks: Structure Regulation and Gas Sorption and Separation","volume":"32","author":"Li","year":"2020","journal-title":"Adv. Mater."},{"key":"ref_4","doi-asserted-by":"crossref","first-page":"8541","DOI":"10.1021\/jacs.0c00270","article-title":"Shaping the Future of Fuel: Monolithic Metal-Organic Frameworks for High-Density Gas Storage","volume":"142","author":"Connolly","year":"2020","journal-title":"J. Am. Chem. Soc."},{"key":"ref_5","doi-asserted-by":"crossref","first-page":"3468","DOI":"10.1021\/jz501586e","article-title":"Porous Metal-Organic Frameworks for Gas Storage and Separation: What, How, and Why?","volume":"5","author":"Li","year":"2014","journal-title":"J. Phys. Chem. Lett."},{"key":"ref_6","doi-asserted-by":"crossref","first-page":"836","DOI":"10.1021\/cr200216x","article-title":"Commensurate Adsorption of Hydrocarbons and Alcohols in Microporous Metal Organic Frameworks","volume":"112","author":"Wu","year":"2012","journal-title":"Chem. Rev."},{"key":"ref_7","doi-asserted-by":"crossref","first-page":"5359","DOI":"10.1039\/C9CS00756C","article-title":"Energy-efficient separation alternatives: Metal\u2013organic frameworks and membranes for hydrocarbon separation","volume":"49","author":"Yang","year":"2020","journal-title":"Chem. Soc. Rev."},{"key":"ref_8","doi-asserted-by":"crossref","first-page":"76","DOI":"10.1016\/j.ccr.2013.10.023","article-title":"Lanthanide metal-organic frameworks for luminescent sensing and light-emitting applications","volume":"273","author":"Cui","year":"2014","journal-title":"Coord. Chem. Rev."},{"key":"ref_9","doi-asserted-by":"crossref","unstructured":"Lee, J.-H., Nguyen, T.-B., Nguyen, D.-K., Kim, J.-H., Kim, J.Y., Phan, B.T., and Kim, S.S. (2019). Gas Sensing Properties of Mg-Incorporated Metal\u2013Organic Frameworks. Sensors, 19.","DOI":"10.3390\/s19153323"},{"key":"ref_10","doi-asserted-by":"crossref","first-page":"4606","DOI":"10.1021\/cr9003924","article-title":"Engineering Metal Organic Frameworks for Heterogeneous Catalysis","volume":"110","author":"Corma","year":"2010","journal-title":"Chem. Rev."},{"key":"ref_11","doi-asserted-by":"crossref","first-page":"213319","DOI":"10.1016\/j.ccr.2020.213319","article-title":"Metal-organic framework (MOF)-derived catalysts for fine chemical production","volume":"416","author":"Konnerth","year":"2020","journal-title":"Coord. Chem. Rev."},{"key":"ref_12","doi-asserted-by":"crossref","first-page":"361","DOI":"10.1021\/cs400959k","article-title":"Metal Organic Framework Catalysis: Quo vadis?","volume":"4","author":"Gascon","year":"2014","journal-title":"ACS Catal."},{"key":"ref_13","doi-asserted-by":"crossref","first-page":"1163","DOI":"10.1021\/cr200174w","article-title":"Ferroelectric Metal-Organic Frameworks","volume":"112","author":"Zhang","year":"2012","journal-title":"Chem. Rev."},{"key":"ref_14","doi-asserted-by":"crossref","first-page":"483","DOI":"10.1021\/acs.accounts.5b00530","article-title":"Metal\u2013Organic Frameworks as Platforms for Functional Materials","volume":"49","author":"Cui","year":"2016","journal-title":"Acc. Chem. Res."},{"key":"ref_15","doi-asserted-by":"crossref","first-page":"17079","DOI":"10.1039\/C9TA03595H","article-title":"Harnessing MOF materials in photovoltaic devices: Recent advances, challenges, and perspectives","volume":"7","author":"Chueh","year":"2019","journal-title":"J. Mater. Chem. A"},{"key":"ref_16","doi-asserted-by":"crossref","first-page":"1343","DOI":"10.1021\/cr400392k","article-title":"Topological Analysis of Metal-Organic Frameworks with Polytopic Linkers and\/or Multiple Building Units and the Minimal Transitivity Principle","volume":"114","author":"Li","year":"2014","journal-title":"Chem. Rev."},{"key":"ref_17","doi-asserted-by":"crossref","first-page":"40","DOI":"10.1016\/j.micromeso.2015.09.026","article-title":"Facile synthesis of nanoscale high porosity IR-MOFs for low-k dielectrics thin films","volume":"221","author":"Guo","year":"2016","journal-title":"Microporous Mesoporous Mater."},{"key":"ref_18","doi-asserted-by":"crossref","first-page":"10978","DOI":"10.1021\/ja1028777","article-title":"Main-Group and Transition-Element IRMOF Homologues","volume":"132","author":"Hausdorf","year":"2010","journal-title":"J. Am. Chem. Soc."},{"key":"ref_19","doi-asserted-by":"crossref","first-page":"6762","DOI":"10.1039\/C8CE01371C","article-title":"Luminescent Zn(II) coordination polymers as efficient fluorescent sensors for highly sensitive detection of explosive nitroaromatics","volume":"20","author":"Tsai","year":"2018","journal-title":"Cryst. Eng. Comm."},{"key":"ref_20","doi-asserted-by":"crossref","first-page":"626","DOI":"10.1039\/B511962F","article-title":"Metal-organic frameworks-prospective industrial applications","volume":"16","author":"Mueller","year":"2006","journal-title":"J. Mater. Chem."},{"key":"ref_21","doi-asserted-by":"crossref","first-page":"28836","DOI":"10.1021\/acs.jpcc.9b09880","article-title":"Direct Growth on Si(100) of Isolated Octahedral Mil-101(Fe) Crystals for the Separation of Aromatic Vapors","volume":"123","author":"Monforte","year":"2019","journal-title":"J. Phys. Chem. C"},{"key":"ref_22","doi-asserted-by":"crossref","unstructured":"Abrori, S.A., Septiani, N.L.W., Nugraha, A.I., Suyatman, S.V., and Yuliarto, B. (2020). Metal-Organic-Framework FeBDC-Derived Fe3O4 for Non-Enzymatic Electrochemical Detection of Glucose. Sensors, 20.","DOI":"10.3390\/s20174891"},{"key":"ref_23","doi-asserted-by":"crossref","first-page":"844","DOI":"10.1021\/acs.accounts.6b00058","article-title":"A Long Journey in Lanthanide Chemistry: From Fundamental Crystallogenesis Studies to Commercial Anticounterfeiting Taggants","volume":"49","author":"Guillou","year":"2016","journal-title":"Acc. Chem. Res."},{"key":"ref_24","doi-asserted-by":"crossref","unstructured":"Younis, S.A., Bhardwaj, N., Bhardwaj, S.K., Kim, K.-H., and Deep, A. (2020). Rare earth metal\u2013organic frameworks (RE-MOFs): Synthesis, properties, and biomedical applications. Coord. Chem. Rev., Ahead of print.","DOI":"10.1016\/j.ccr.2020.213620"},{"key":"ref_25","unstructured":"Fordham, S., Wang, X., Bosch, M., and Zhou, H.-C. (2015). Lanthanide Metal-Organic Frameworks in Structure and Bonding, Springer."},{"key":"ref_26","doi-asserted-by":"crossref","first-page":"19485","DOI":"10.1039\/C8NJ04601H","article-title":"Multi-responsive luminescent sensor based on three dimensional lanthanide metal\u2013organic framework","volume":"42","author":"Tao","year":"2018","journal-title":"New J. Chem."},{"key":"ref_27","doi-asserted-by":"crossref","first-page":"6758","DOI":"10.1039\/C4TC00962B","article-title":"Amino-decorated lanthanide(III) organic extended frameworks for multi-color luminescence and fluorescence sensing","volume":"2","author":"Hao","year":"2014","journal-title":"J. Mater. Chem. C"},{"key":"ref_28","doi-asserted-by":"crossref","first-page":"4962","DOI":"10.1039\/C8CE00915E","article-title":"Construction of metal\u2013organic frameworks (MOFs) and highly luminescent Eu(III)-MOF for the detection of inorganic ions and antibiotics in aqueous medium","volume":"20","author":"Li","year":"2018","journal-title":"CrystEngComm"},{"key":"ref_29","doi-asserted-by":"crossref","first-page":"13003","DOI":"10.1039\/D0DT02120B","article-title":"A multi-responsive chemosensor for highly sensitive and selective detection of Fe3+, Cu2+, Cr2O72\u2212 and nitrobenzene based on a luminescent lanthanide metal\u2013organic framework","volume":"49","author":"Du","year":"2020","journal-title":"Dalton Trans."},{"key":"ref_30","doi-asserted-by":"crossref","first-page":"12051","DOI":"10.1039\/C8DT02313A","article-title":"Extremely stable europium-organic framework for luminescent sensing of Cr2O72\u2212 and Fe3+ in aqueous systems","volume":"47","author":"Gai","year":"2018","journal-title":"Dalton Trans."},{"key":"ref_31","doi-asserted-by":"crossref","first-page":"1695","DOI":"10.1039\/C9CE01995B","article-title":"Stable Ln-MOFs as multi-responsive photoluminescence sensors for the sensitive sensing of Fe3+, Cr2O72\u2212, and nitrofuran","volume":"22","author":"Duan","year":"2020","journal-title":"CrystEngComm"},{"key":"ref_32","doi-asserted-by":"crossref","first-page":"4223","DOI":"10.1021\/acs.inorgchem.8b03284","article-title":"Lanthanide Organic Framework as a Reversible Luminescent Sensor for Sulfamethazine Antibiotics","volume":"58","author":"Ren","year":"2019","journal-title":"Inorg. Chem."},{"key":"ref_33","doi-asserted-by":"crossref","first-page":"1","DOI":"10.1016\/j.forsciint.2019.01.004","article-title":"Rapid visual detection of nitroaromatic explosives using a luminescent europium-organic framework material","volume":"297","author":"He","year":"2019","journal-title":"Forensic Sci. Int."},{"key":"ref_34","first-page":"11127","article-title":"pH-Modulated luminescence switching in a Eu-MOF: Rapid detection of acidic amino acids","volume":"7","author":"Zhao","year":"2019","journal-title":"J. Mater. Chem. C"},{"key":"ref_35","doi-asserted-by":"crossref","first-page":"11463","DOI":"10.1021\/acs.inorgchem.8b01319","article-title":"Anionic Lanthanide Metal\u2212Organic Frameworks: Selective Separation of Cationic Dyes, Solvatochromic Behavior, and Luminescent Sensing of Co(II) Ion","volume":"57","author":"Cui","year":"2018","journal-title":"Inorg. Chem."},{"key":"ref_36","doi-asserted-by":"crossref","first-page":"248","DOI":"10.1016\/j.jssc.2017.04.026","article-title":"3D lanthanide metal-organic frameworks constructed from 2,6-naphthalenedicarboxylate ligand: Synthesis, structure, luminescence and dye adsorption","volume":"251","author":"Zhu","year":"2017","journal-title":"J. Solid State Chem."},{"key":"ref_37","doi-asserted-by":"crossref","first-page":"740","DOI":"10.1039\/C9CE01779H","article-title":"3D lanthanide-coordination frameworks constructed by a ternary mixed-ligand: Crystal structure, luminescence and luminescence sensing","volume":"22","author":"Xu","year":"2020","journal-title":"CrystEngComm"},{"key":"ref_38","doi-asserted-by":"crossref","first-page":"166","DOI":"10.1016\/j.matchemphys.2017.01.024","article-title":"Influence of synthesis time on the microstructure and photophysical properties of Gd-MOFs doped with Eu3+","volume":"190","author":"Barros","year":"2017","journal-title":"Mater. Chem. Phys."},{"key":"ref_39","doi-asserted-by":"crossref","first-page":"1054","DOI":"10.1039\/C9NJ02583A","article-title":"Mechanochemical synthesis, luminescent and magnetic properties of lanthanide benzene-1,4-dicarboxylate coordination polymers (Ln0.5Gd0.5)2(1,4-BDC)3(H2O)4; Ln = Sm, Eu, Tb","volume":"44","author":"Alammar","year":"2020","journal-title":"New J. Chem."},{"key":"ref_40","doi-asserted-by":"crossref","first-page":"4290","DOI":"10.1002\/ejic.201600286","article-title":"\u201cGreen\u201d Synthesis of Metal-Organic Frameworks","volume":"27","author":"Reinsch","year":"2016","journal-title":"Eur. J. Inorg. Chem."},{"key":"ref_41","doi-asserted-by":"crossref","first-page":"603","DOI":"10.1351\/pac198557040603","article-title":"Reporting physisorption data for gas\/solid systems with special reference to the determination of surface area and porosity","volume":"57","author":"Sing","year":"1985","journal-title":"Pure Appl. Chem."},{"key":"ref_42","doi-asserted-by":"crossref","first-page":"3700","DOI":"10.1021\/ic702325m","article-title":"Structural and luminescent properties of micro- and nanosized particles of lanthanide terephthalate coordination polymers","volume":"47","author":"Daiguebonne","year":"2008","journal-title":"Inorg. Chem."},{"key":"ref_43","doi-asserted-by":"crossref","first-page":"2837","DOI":"10.1021\/ic801616y","article-title":"An Unprecedented Family of Lanthanide-Containing Coordination Polymers with Highly Tunable Emission Properties","volume":"48","author":"Kerbellec","year":"2009","journal-title":"Inorg. Chem."},{"key":"ref_44","doi-asserted-by":"crossref","first-page":"1651","DOI":"10.1021\/ja983577d","article-title":"From Condensed Lanthanide Coordination Solids to Microporous Frameworks Having Accessible Metal Sites","volume":"121","author":"Reineke","year":"1999","journal-title":"J. Am. Chem. Soc."},{"key":"ref_45","unstructured":"Mercury 3.7, Free Program of the Cambridge Crystallographic Database, New Features for the Visualization and Investigation of Crystal Structures"},{"key":"ref_46","doi-asserted-by":"crossref","first-page":"1605","DOI":"10.1016\/j.ccr.2006.03.017","article-title":"Lanthanide \u201csecond-generation\u201d precursors for MOCVD applications: Effects of the metal ionic radius and polyether length on coordination spheres and mass-transport properties","volume":"250","author":"Malandrino","year":"2006","journal-title":"Coord. Chem. Rev."},{"key":"ref_47","doi-asserted-by":"crossref","first-page":"1292","DOI":"10.1021\/cm950569c","article-title":"Synthesis, Characterization, and Mass-Transport Properties of Two Novel Gadolinium(III) Hexafluoroacetylacetonate Polyether Adducts: Promising Precursors for MOCVD of GdF3 Films","volume":"8","author":"Malandrino","year":"1996","journal-title":"Chem. Mater."},{"key":"ref_48","doi-asserted-by":"crossref","unstructured":"Almeida Paz, F.A., and Klinowski, J. (2003). Hydrothermal synthesis of a novel thermally stable three-dimensional ytterbium-organic framework. Chem. Commun., 1484\u20131485.","DOI":"10.1039\/B302140H"},{"key":"ref_49","doi-asserted-by":"crossref","unstructured":"Zheng, X., Sun, C., Lu, S., Liao, F., Gao, S., and Jin, L. (2004). New porous lanthanide-organic frameworks: Synthesis, characterization, and properties of lanthanide 2,6-naphthalenedicarboxylates. Eur. J. Inorg. Chem., 3262\u20133268.","DOI":"10.1002\/ejic.200400176"},{"key":"ref_50","doi-asserted-by":"crossref","first-page":"6966","DOI":"10.1021\/acs.chemrev.5b00221","article-title":"Bronsted Acidity in Metal-Organic Frameworks","volume":"115","author":"Jiang","year":"2015","journal-title":"Chem. Rev."},{"key":"ref_51","doi-asserted-by":"crossref","first-page":"5710","DOI":"10.1021\/jp210671t","article-title":"Infrared Spectroscopy Investigation of the Acid Sites in the Metal-Organic Framework Aluminum Trimesate MIL-100(Al)","volume":"116","author":"Volkringer","year":"2012","journal-title":"J. Phys. Chem. C"},{"key":"ref_52","doi-asserted-by":"crossref","first-page":"383","DOI":"10.1021\/jp064686e","article-title":"Creation of Controlled Bronsted Acidity on a Zeotypic Mesoporous Chromium(III) Carboxylate by Grafting Water and Alcohol Molecules","volume":"111","author":"Vimont","year":"2007","journal-title":"J. Phys. Chem. C"},{"key":"ref_53","doi-asserted-by":"crossref","first-page":"1126","DOI":"10.1021\/cr200101d","article-title":"Luminescent Functional Metal\u2212Organic Frameworks","volume":"112","author":"Cui","year":"2012","journal-title":"Chem. Rev."},{"key":"ref_54","unstructured":"Turro, N.J. (1991). Modern Molecular Photochemistry, University Science Books."},{"key":"ref_55","doi-asserted-by":"crossref","first-page":"721","DOI":"10.1021\/am5070409","article-title":"Eu(III)-Functionalized MIL-124 as Fluorescent Probe for Highly Selectively Sensing Ions and Organic Small Molecules Especially for Fe(III) and Fe(II)","volume":"7","author":"Xu","year":"2015","journal-title":"ACS Appl. Mater. Interfaces"},{"key":"ref_56","doi-asserted-by":"crossref","first-page":"1786","DOI":"10.1039\/C8DT04653K","article-title":"A water-stable europium-MOF as a multifunctional luminescent sensor for some trivalent metal ions (Fe3+, Cr3+, Al3+), PO43\u2212 ions, and nitroaromatic explosives","volume":"48","author":"Zhan","year":"2019","journal-title":"Dalton Trans."},{"key":"ref_57","doi-asserted-by":"crossref","first-page":"12201","DOI":"10.1039\/C7DT02590D","article-title":"Water-stable Eu-MOF fluorescent sensors for trivalent metal ions and nitrobenzene","volume":"46","author":"Li","year":"2017","journal-title":"Dalton Trans."},{"key":"ref_58","doi-asserted-by":"crossref","first-page":"119843","DOI":"10.1016\/j.ica.2020.119843","article-title":"Eu(III)-organic framework as a multi-responsive photoluminescence sensor for efficient detection of 1-naphthol, Fe3+ and MnO4\u2212 in water","volume":"511","author":"Zhao","year":"2020","journal-title":"Inorg. Chim. Acta"}],"container-title":["Sensors"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/www.mdpi.com\/1424-8220\/21\/5\/1679\/pdf","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2025,10,11]],"date-time":"2025-10-11T05:30:49Z","timestamp":1760160649000},"score":1,"resource":{"primary":{"URL":"https:\/\/www.mdpi.com\/1424-8220\/21\/5\/1679"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2021,3,1]]},"references-count":58,"journal-issue":{"issue":"5","published-online":{"date-parts":[[2021,3]]}},"alternative-id":["s21051679"],"URL":"https:\/\/doi.org\/10.3390\/s21051679","relation":{},"ISSN":["1424-8220"],"issn-type":[{"value":"1424-8220","type":"electronic"}],"subject":[],"published":{"date-parts":[[2021,3,1]]}}}