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However, these composite materials have many problems associated with the optimization of both components for the specific application, besides the stability of the mixture. Self-supported metallic materials may be an interesting strategy in order to avoid the traditional carbon supports; however, these metallic materials should present highly active surface area. Iron aerogels are presented in this work as effective and affordable unsupported electrocatalysts. The combination of their metallic structure with high porosity (i.e., 85 m2 g\u22121 and 0.45 cm3 g\u22121 of mesopore volume), due to their interconnected tridimensional structure, leads to a great activity versus the oxygen reduction reaction. A method for producing iron aerogels based on microwave-assisted sol\u2013gel methodology is presented. The incorporation of carbon functionalities to the iron aerogels seems to clearly influence the mechanism of the reaction, favoring the direct mechanism of the oxygen reduction reaction and thus notably improving the performance of the electrocatalysts. Chemical vapor deposition seems to be an adequate methodology for incorporating carbon functionalities to the transition metal structure without affecting the tridimensional network and leading to current densities over 4 mA cm\u22122 and great stability even after 10,000 s.<\/jats:p>","DOI":"10.3390\/gels11030154","type":"journal-article","created":{"date-parts":[[2025,2,20]],"date-time":"2025-02-20T11:03:37Z","timestamp":1740049417000},"page":"154","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":2,"title":["Revealing the Importance of Iron Aerogel Features as Electrocatalysts for the Oxygen Reduction Reaction"],"prefix":"10.3390","volume":"11","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-7408-8031","authenticated-orcid":false,"given":"Judith","family":"Gonz\u00e1lez-Lav\u00edn","sequence":"first","affiliation":[{"name":"Instituto de Ciencia y Tecnolog\u00eda del Carbono, INCAR-CSIC, 33011 Oviedo, Spain"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-5388-1169","authenticated-orcid":false,"given":"Ana","family":"Arenillas","sequence":"additional","affiliation":[{"name":"Instituto de Ciencia y Tecnolog\u00eda del Carbono, INCAR-CSIC, 33011 Oviedo, Spain"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-5003-0035","authenticated-orcid":false,"given":"Natalia","family":"Rey-Raap","sequence":"additional","affiliation":[{"name":"Instituto de Ciencia y Tecnolog\u00eda del Carbono, INCAR-CSIC, 33011 Oviedo, Spain"}]}],"member":"1968","published-online":{"date-parts":[[2025,2,20]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"120","DOI":"10.1016\/j.apcatb.2018.11.037","article-title":"Bimetallic\u2212organic Framework-Derived Hierarchically Porous Co-Zn-N-C as Efficient Catalyst for Acidic Oxygen Reduction Reaction","volume":"244","author":"Meng","year":"2019","journal-title":"Appl. Catal. B Environ."},{"key":"ref_2","doi-asserted-by":"crossref","unstructured":"Osmieri, L. (2019). Transition Metal-Nitrogen-Carbon (M-N-C) Catalysts for Oxygen Reduction Reaction. Insights on Synthesis and Performance in Polymer Electrolyte Fuel Cells. ChemEngineering, 3.","DOI":"10.3390\/chemengineering3010016"},{"key":"ref_3","doi-asserted-by":"crossref","first-page":"2004670","DOI":"10.1002\/adma.202004670","article-title":"Coexisting Single-Atomic Fe and Ni Sites on Hierarchically Ordered Porous Carbon as a Highly Efficient ORR Electrocatalyst","volume":"32","author":"Zhu","year":"2020","journal-title":"Adv. Mater."},{"key":"ref_4","doi-asserted-by":"crossref","first-page":"104772","DOI":"10.1016\/j.jwpe.2024.104772","article-title":"Catalytic Peroxidation of Winery Wastewater Contaminants Using Activated Carbon-Supported Magnetite Nanoparticles","volume":"58","author":"Esteves","year":"2024","journal-title":"J. Water Proc. Eng."},{"key":"ref_5","doi-asserted-by":"crossref","first-page":"8540","DOI":"10.1039\/D2TA10036C","article-title":"Metal-Support Interactions for Heterogeneous Catalysis: Mechanisms, Characterization Techniques and Applications","volume":"11","author":"Chen","year":"2023","journal-title":"J. Mater. Chem. A"},{"key":"ref_6","doi-asserted-by":"crossref","first-page":"2397","DOI":"10.1002\/celc.202100345","article-title":"What We Currently Know about Carbon-Supported Metal and Metal Oxide Nanomaterials in Electrochemical CO2 Reduction","volume":"8","author":"Suominen","year":"2021","journal-title":"ChemElectroChem"},{"key":"ref_7","doi-asserted-by":"crossref","first-page":"4903","DOI":"10.1021\/acscatal.2c05998","article-title":"Surfactant-Free Colloidal Syntheses of Precious Metal Nanoparticles for Improved Catalysts","volume":"13","author":"Quinson","year":"2023","journal-title":"ACS Catal."},{"key":"ref_8","doi-asserted-by":"crossref","first-page":"5611","DOI":"10.1039\/C5RA19764C","article-title":"Novel Al2O3-SiO2 Composite Aerogels with High Specific Surface Area at Elevated Temperatures with Different Alumina\/Silica Molar Ratios Prepared by a Non-Alkoxide Sol-Gel Method","volume":"6","author":"Wu","year":"2016","journal-title":"RSC Adv."},{"key":"ref_9","doi-asserted-by":"crossref","first-page":"1156","DOI":"10.1038\/s41578-021-00347-3","article-title":"Emerging Applications of Zeolites in Catalysis, Separation and Host\u2013Guest Assembly","volume":"6","author":"Li","year":"2021","journal-title":"Nat. Rev. Mater."},{"key":"ref_10","doi-asserted-by":"crossref","first-page":"215189","DOI":"10.1016\/j.ccr.2023.215189","article-title":"Metal Oxides Confine Single Atoms toward Efficient Thermal Catalysis","volume":"488","author":"Humayun","year":"2023","journal-title":"Coord. Chem. Rev."},{"key":"ref_11","doi-asserted-by":"crossref","first-page":"1901945","DOI":"10.1002\/aenm.201901945","article-title":"Engineering Self-Supported Noble Metal Foams Toward Electrocatalysis and Beyond","volume":"10","author":"Du","year":"2020","journal-title":"Adv. Energy Mater."},{"key":"ref_12","doi-asserted-by":"crossref","first-page":"107410","DOI":"10.1016\/j.isci.2023.107410","article-title":"Fundamentals, Rational Catalyst Design, and Remaining Challenges in Electrochemical NOx Reduction Reaction","volume":"26","author":"Hermawan","year":"2023","journal-title":"iScience"},{"key":"ref_13","unstructured":"Ram, K.G., Tuan, A.N., and Ghulam, Y. (2022). MOFs-Metal Oxides\/Sulfides\/Phosphides Nanocomposites for Supercapacitators. Metal-Organic Framework-Based Nanomaterials for Energy Conversion and Storage, Elsevier."},{"key":"ref_14","doi-asserted-by":"crossref","first-page":"75","DOI":"10.31272\/jeasd.28.1.6","article-title":"A Review of Epoxy-Nanocomposite Properties","volume":"28","author":"Raouf","year":"2024","journal-title":"J. Eng. Sustain. Dev."},{"key":"ref_15","doi-asserted-by":"crossref","first-page":"1725","DOI":"10.1039\/D3EE04410F","article-title":"Advanced Design Strategies for Fe-Based Metal-Organic Framework-Derived Electrocatalysts toward High-Performance Zn-Air Batteries","volume":"17","author":"Guo","year":"2024","journal-title":"Energy Environ. Sci"},{"key":"ref_16","doi-asserted-by":"crossref","first-page":"1704","DOI":"10.1016\/j.joule.2021.05.005","article-title":"Stability Challenges of Electrocatalytic Oxygen Evolution Reaction: From Mechanistic Understanding to Reactor Design","volume":"5","author":"Chen","year":"2021","journal-title":"Joule"},{"key":"ref_17","doi-asserted-by":"crossref","first-page":"332","DOI":"10.1016\/j.jiec.2018.12.033","article-title":"A Study on the Methods for Making Iron Oxide Aerogel","volume":"72","author":"Yoo","year":"2019","journal-title":"J. Ind. Eng. Chem."},{"key":"ref_18","doi-asserted-by":"crossref","first-page":"15263","DOI":"10.1039\/c3ra41688g","article-title":"Synthesis of Inorganic Aerogels via Rapid Gelation Using Chloride Precursors","volume":"3","author":"Milow","year":"2013","journal-title":"RSC Adv."},{"key":"ref_19","doi-asserted-by":"crossref","first-page":"5595","DOI":"10.1039\/D0TA00398K","article-title":"Transition Metal M (M = Co, Ni, and Fe) and Boron Co-Modulation in Rh-Based Aerogels for Highly Efficient and PH-Universal Hydrogen Evolution Electrocatalysis","volume":"8","author":"Deng","year":"2020","journal-title":"J. Mater. Chem. A"},{"key":"ref_20","doi-asserted-by":"crossref","first-page":"11012","DOI":"10.1021\/acscatal.3c01972","article-title":"Biomimetic Fe-Cu Porphyrrole Aerogel Electrocatalyst for Oxygen Reduction Reaction","volume":"13","author":"Persky","year":"2023","journal-title":"ACS Catal."},{"key":"ref_21","doi-asserted-by":"crossref","first-page":"54","DOI":"10.1016\/j.matt.2020.10.001","article-title":"A Roadmap for 3D Metal Aerogels: Materials Design and Application Attempts","volume":"4","author":"Jiang","year":"2021","journal-title":"Matter"},{"key":"ref_22","doi-asserted-by":"crossref","first-page":"42","DOI":"10.1021\/ar500237c","article-title":"Noble Metal Aerogels-Synthesis, Characterization, and Application as Electrocatalysts","volume":"48","author":"Liu","year":"2015","journal-title":"Acc. Chem. Res."},{"key":"ref_23","doi-asserted-by":"crossref","unstructured":"Li, W., Weng, B., Sun, X., Cai, B., H\u00fcbner, R., Luo, Y., and Du, R. (2023). A Decade of Electrocatalysis with Metal Aerogels: A Perspective. Catalysts, 13.","DOI":"10.3390\/catal13010167"},{"key":"ref_24","doi-asserted-by":"crossref","first-page":"44","DOI":"10.1002\/sus2.104","article-title":"Design of Advanced Aerogel Structures for Oxygen Reduction Reaction Electrocatalysis","volume":"3","author":"Persky","year":"2023","journal-title":"SusMat"},{"key":"ref_25","doi-asserted-by":"crossref","first-page":"1376","DOI":"10.3390\/catal10121376","article-title":"Preparation and Electrocatalysis Application of Pure Metallic Aerogel: A Review","volume":"10","author":"Zhang","year":"2020","journal-title":"Catalysts"},{"key":"ref_26","doi-asserted-by":"crossref","first-page":"4710","DOI":"10.1016\/j.jeurceramsoc.2021.03.057","article-title":"ZrC\/C Aerogel with High Compressive Strength by a Carbothermic Process","volume":"41","author":"Ren","year":"2021","journal-title":"J. Eur. Ceram. Soc."},{"key":"ref_27","doi-asserted-by":"crossref","first-page":"567","DOI":"10.1007\/s10971-017-4571-0","article-title":"Synthesis of High-Temperature Resistant Monolithic Zirconia-Based Aerogel via Facile Water Glass Assisted Sol\u2013Gel Method","volume":"85","author":"Gao","year":"2018","journal-title":"J. Solgel Sci. Technol."},{"key":"ref_28","doi-asserted-by":"crossref","unstructured":"Wang, C., Bai, L., Xu, H., Qin, S., Li, Y., and Zhang, G. (2024). A Review of High-Temperature Aerogels: Composition, Mechanisms, and Properties. Gels, 10.","DOI":"10.3390\/gels10050286"},{"key":"ref_29","doi-asserted-by":"crossref","first-page":"360","DOI":"10.1007\/s10971-021-05720-w","article-title":"Metal Oxide Aerogels for High-Temperature Applications","volume":"106","author":"Wu","year":"2023","journal-title":"J. Solgel Sci. Technol."},{"key":"ref_30","doi-asserted-by":"crossref","first-page":"19626","DOI":"10.1039\/C7TA06375J","article-title":"Kinetically Controlled Synthesis of AuPt Bi-Metallic Aerogels and Their Enhanced Electrocatalytic Performances","volume":"5","author":"Shi","year":"2017","journal-title":"J. Mater. Chem. A Mater."},{"key":"ref_31","doi-asserted-by":"crossref","first-page":"2021","DOI":"10.1016\/j.cclet.2021.09.104","article-title":"Noble Metal Aerogels Rapidly Synthesized by Ultrasound for Electrocatalytic Reaction","volume":"33","author":"Yuan","year":"2022","journal-title":"Chin. Chem. Lett."},{"key":"ref_32","doi-asserted-by":"crossref","unstructured":"Aegerter, M.A., Leventis, N., Koebel, M., and Steiner, S.A. (2023). Noble Metal Aerogels. Springer Handbook of Aerogels, Springer Handbooks.","DOI":"10.1007\/978-3-030-27322-4"},{"key":"ref_33","doi-asserted-by":"crossref","first-page":"14373","DOI":"10.1021\/acscatal.4c02366","article-title":"Single-Site Catalysts for the Oxygen Reduction Reaction: Why Iron Is Better than Platinum","volume":"14","author":"Facchin","year":"2024","journal-title":"ACS Catal."},{"key":"ref_34","doi-asserted-by":"crossref","first-page":"2761","DOI":"10.1021\/cs300579b","article-title":"Determination of Iron Active Sites in Pyrolyzed Iron-Based Catalysts for the Oxygen Reduction Reaction","volume":"2","author":"Li","year":"2012","journal-title":"ACS Catal."},{"key":"ref_35","doi-asserted-by":"crossref","first-page":"143416","DOI":"10.1016\/j.electacta.2023.143416","article-title":"On the Effects of Br\u2212, ClO4\u2212, NO3\u2212 anions on the Oxygen Reduction Reaction Electrocatalysis at Fe Phthalocyanine Modified Electrodes","volume":"473","author":"Loyola","year":"2024","journal-title":"Electrochim. Acta"},{"key":"ref_36","doi-asserted-by":"crossref","first-page":"18582","DOI":"10.1021\/acsanm.3c04173","article-title":"Microwave-Assisted Synthesis of Iron-Based Aerogels with Tailored Textural and Morphological Properties","volume":"6","author":"Arenillas","year":"2023","journal-title":"ACS Appl. Nano. Mater."},{"key":"ref_37","doi-asserted-by":"crossref","first-page":"184","DOI":"10.4191\/kcers.2017.54.3.12","article-title":"Flexible and Transparent Silica Aerogels: An Overview","volume":"54","author":"Parale","year":"2017","journal-title":"J. Korean Ceram. Soc."},{"key":"ref_38","first-page":"257","article-title":"Tuning the Properties of Silica Aerogels through PH Controlled Sol-Gel Processes","volume":"6","author":"Gizli","year":"2020","journal-title":"Res. Eng. Struct. Mater."},{"key":"ref_39","doi-asserted-by":"crossref","first-page":"9299","DOI":"10.1039\/D2RA00080F","article-title":"A New Route for Controlling the Microstructure and Properties of Carbon Aerogels via Sol-Gel and Impregnation Methods","volume":"12","author":"Yang","year":"2022","journal-title":"RSC Adv."},{"key":"ref_40","doi-asserted-by":"crossref","first-page":"488","DOI":"10.1007\/s10971-013-3248-6","article-title":"Optimization of the Process Variables in the Microwave-Induced Synthesis of Carbon Xerogels","volume":"69","author":"Arenillas","year":"2014","journal-title":"J. Sol-Gel Sci. Technol."},{"key":"ref_41","doi-asserted-by":"crossref","first-page":"151","DOI":"10.1016\/j.pnsc.2023.05.007","article-title":"Metal\u2013Air Batteries: A Review on Current Status and Future Applications","volume":"33","author":"Li","year":"2023","journal-title":"Prog. Nat. Sci. Mater. Int."},{"key":"ref_42","doi-asserted-by":"crossref","first-page":"490","DOI":"10.1016\/j.carbon.2014.07.030","article-title":"Simultaneous Adjustment of the Main Chemical Variables to Fine-Tune the Porosity of Carbon Xerogels","volume":"78","author":"Arenillas","year":"2014","journal-title":"Carbon"},{"key":"ref_43","doi-asserted-by":"crossref","first-page":"791","DOI":"10.1016\/S0008-6223(97)00024-9","article-title":"Porous Structure of Organic and Carbon Aerogels Synthesized by Sol-Gel Polycondensation of Resorcinol with Formaldehyde","volume":"35","author":"Tamon","year":"1997","journal-title":"Carbon"},{"key":"ref_44","doi-asserted-by":"crossref","unstructured":"Gonz\u00e1lez-Barriuso, M., S\u00e1nchez-Su\u00e1rez, M., Gonz\u00e1lez-Lav\u00edn, J., Arenillas, A., and Rey-Raap, N. (2024). Synthesis of Ni-Doped Graphene Aerogels for Electrochemical Applications. Gels, 10.","DOI":"10.3390\/gels10030180"},{"key":"ref_45","doi-asserted-by":"crossref","unstructured":"Jian, S., Chen, Y., Shi, F., Liu, Y., Jiang, W., Hu, J., Han, X., Jiang, S., and Yang, W. (2022). Template-Free Synthesis of Magnetic La-Mn-Fe Tri-Metal Oxide Nanofibers for Efficient Fluoride Remediation: Kinetics, Isotherms, Thermodynamics and Reusability. Polymers, 14.","DOI":"10.3390\/polym14245417"},{"key":"ref_46","doi-asserted-by":"crossref","first-page":"2287","DOI":"10.1021\/cm0497780","article-title":"Template Synthesis and Photocatalytic Properties of Porous Metal Oxide Spheres Formed by Nanoparticle Infiltration","volume":"16","author":"Shchukin","year":"2004","journal-title":"Chem. Mater."},{"key":"ref_47","doi-asserted-by":"crossref","first-page":"125","DOI":"10.1016\/j.carbon.2021.04.017","article-title":"Carbon Aerogels with Integrated Engineered Macroporous Architectures for Improved Mass Transport","volume":"179","author":"Chandrasekaran","year":"2021","journal-title":"Carbon"},{"key":"ref_48","unstructured":"Aegerter, M.A., and Prassas, M. (2019). Properties of Carbon Aerogels and Their Organic Precursors. Organic and Carbon Gels. Advances in Sol-Gel Derived Materials and Technologies, Springer."},{"key":"ref_49","doi-asserted-by":"crossref","first-page":"5241","DOI":"10.1021\/acssuschemeng.3c08557","article-title":"Boosting ORR Activity in \u03c0-Rich Carbon-Supported Sub-3 Nm Pt-Based Intermetallic Electrocatalysts via D\u2212\u03c0 Interaction","volume":"12","author":"Li","year":"2024","journal-title":"ACS Sustain. Chem. Eng."},{"key":"ref_50","doi-asserted-by":"crossref","unstructured":"Burpo, F.J., Mitropoulos, A.N., Nagelli, E.A., Palmer, J.L., Morris, L.A., Ryu, M.Y., and Kenneth Wickiser, J. (2018). Cellulose Nanofiber Biotemplated Palladium Composite Aerogels. Molecules, 23.","DOI":"10.3390\/molecules23061405"},{"key":"ref_51","doi-asserted-by":"crossref","first-page":"4153","DOI":"10.1557\/jmr.2017.412","article-title":"Direct Solution-Based Reduction Synthesis of Au, Pd, and Pt Aerogels","volume":"32","author":"Burpo","year":"2017","journal-title":"J. Mater. Res."},{"key":"ref_52","doi-asserted-by":"crossref","first-page":"11183","DOI":"10.1021\/acsaem.1c02055","article-title":"Monolithic Carbon Spherogels as Freestanding Electrodes for Supercapacitors","volume":"4","author":"Salihovic","year":"2021","journal-title":"ACS Appl. Energy Mater."},{"key":"ref_53","doi-asserted-by":"crossref","first-page":"946","DOI":"10.1007\/s43236-024-00804-6","article-title":"Analyzing and Mitigating Parasitic Capacitances in Planar Transformers for High-Frequency Operation","volume":"24","author":"Lee","year":"2024","journal-title":"J. Power Electron."},{"key":"ref_54","unstructured":"Neugebauer, T.C., and Perreault, D.J. (2004, January 20\u201325). Parasitic Capacitance Cancellation in Filter Inductors. Proceedings of the 35th Annual IEEE Power Electronics Specialists Conference, Aachen, Germany."},{"key":"ref_55","unstructured":"Diard, J.P., Le Gorrec, B., and Montella, C. (2020). Handbook of Electrochemical Impedance Spectroscopy. Distributed and Mixed Impedances, ERASE-LEPMI."},{"key":"ref_56","doi-asserted-by":"crossref","first-page":"162","DOI":"10.1021\/acsmeasuresciau.2c00070","article-title":"Electrochemical Impedance Spectroscopy\u2014A Tutorial","volume":"3","author":"Lazanas","year":"2023","journal-title":"ACS Meas. Sci. Au"},{"key":"ref_57","doi-asserted-by":"crossref","first-page":"13","DOI":"10.1016\/j.jnoncrysol.2015.06.017","article-title":"Effect of Methanol Content in Commercial Formaldehyde Solutions on the Porosity of RF Carbon Xerogels","volume":"426","author":"Calvo","year":"2015","journal-title":"J. Non-Cryst. Solids"},{"key":"ref_58","doi-asserted-by":"crossref","first-page":"60","DOI":"10.1007\/s10971-017-4475-z","article-title":"Acid-Based Resorcinol-Formaldehyde Xerogels Synthesized by Microwave Heating","volume":"84","author":"Calvo","year":"2017","journal-title":"J. Solgel Sci. Technol."},{"key":"ref_59","doi-asserted-by":"crossref","first-page":"28","DOI":"10.1016\/j.electacta.2018.04.143","article-title":"Performance of Carbon Xerogel-Graphene Hybrids as Electrodes in Aqueous Supercapacitors","volume":"276","author":"Arenillas","year":"2018","journal-title":"Electrochim. Acta"},{"key":"ref_60","doi-asserted-by":"crossref","first-page":"291","DOI":"10.1016\/j.carbon.2017.03.059","article-title":"Graphene-Doped Carbon Xerogel Combining High Electrical Conductivity and Surface Area for Optimized Aqueous Supercapacitors","volume":"118","author":"Arenillas","year":"2017","journal-title":"Carbon"},{"key":"ref_61","doi-asserted-by":"crossref","first-page":"215","DOI":"10.1021\/jacs.5b10266","article-title":"Application of Consistency Criteria to Calculate BET Areas of Micro- and Mesoporous Metal-Organic Frameworks","volume":"138","author":"Moghadam","year":"2016","journal-title":"J. Am. Chem. Soc."},{"key":"ref_62","doi-asserted-by":"crossref","first-page":"13266","DOI":"10.1021\/la5026679","article-title":"Validity of the T-Plot Method to Assess Microporosity in Hierarchical Micro\/Mesoporous Materials","volume":"30","author":"Galarneau","year":"2014","journal-title":"Langmuir"}],"container-title":["Gels"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/www.mdpi.com\/2310-2861\/11\/3\/154\/pdf","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2025,10,9]],"date-time":"2025-10-09T16:39:02Z","timestamp":1760027942000},"score":1,"resource":{"primary":{"URL":"https:\/\/www.mdpi.com\/2310-2861\/11\/3\/154"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2025,2,20]]},"references-count":62,"journal-issue":{"issue":"3","published-online":{"date-parts":[[2025,3]]}},"alternative-id":["gels11030154"],"URL":"https:\/\/doi.org\/10.3390\/gels11030154","relation":{},"ISSN":["2310-2861"],"issn-type":[{"value":"2310-2861","type":"electronic"}],"subject":[],"published":{"date-parts":[[2025,2,20]]}}}