Graphene functionalization with metallic Pt nanoparticles : A path to cost-efficient H2 production in microbial electrolysis cells
Sánchez-Peña, Pilar (Universitat Autònoma de Barcelona. Departament d'Enginyeria Química, Biològica i Ambiental)
Rodriguez, Jordi (Universitat Autònoma de Barcelona. Departament de Química)
Gabriel, David (Universitat Autònoma de Barcelona. Departament d'Enginyeria Química, Biològica i Ambiental)
Baeza Labat, Juan Antonio (Universitat Autònoma de Barcelona. Departament d'Enginyeria Química, Biològica i Ambiental)
Guisasola, Albert (Universitat Autònoma de Barcelona. Departament d'Enginyeria Química, Biològica i Ambiental)
Baeza Labat, Maria del Mar (Universitat Autònoma de Barcelona. Departament de Química)

Date:	2022
Abstract:	Platinum is one of the most widely used catalysts in the cathode of Microbial Electrolysis Cells (MECs) to overcome the relatively slow kinetics of hydrogen evolution, even though it is not economically feasible on a large scale. This work aims at developing, applying, characterizing, and optimizing two novel Pt-functionalized inks with promising characteristics: Pt@rGO based on reduced graphene oxide and Pt@Graphitene based on a home-made material named Graphitene, which showed improved performance at a lower cost. The Pt-functionalized materials were deposited on carbon cloth and used as cathode electrode in a single chamber MEC. These materials provided 47% increase in Pt functionalization over commercial inks. Moreover, surface areas of 10. 76 m/g and 24. 40 m/g and electroactive areas of 0. 10 cm/cm and 0. 16 cm/cm were determined for Pt@Graphitene and Pt@rGO, respectively, a difference caused by structural defects in the case of the Pt@rGO, which slightly improved its performance compared to Pt@Graphitene. Thus, the experimental results reached ca. 0. 8 mA/cm, a 43% higher intensity than that obtained using conventional commercial inks.
Grants:	Agencia Estatal de Investigación CTQ2017-82404-R Agència de Gestió d'Ajuts Universitaris i de Recerca 2017/SGR-1175 Agència de Gestió d'Ajuts Universitaris i de Recerca 2018/FI-B01161
Note:	Altres ajuts: acords transformatius de la UAB
Note:	Altres ajuts: GraphCAT project (001-P-001702)
Rights:	Aquest document està subjecte a una llicència d'ús Creative Commons. Es permet la reproducció total o parcial, la distribució, la comunicació pública de l'obra i la creació d'obres derivades, fins i tot amb finalitats comercials, sempre i quan es reconegui l'autoria de l'obra original.
Language:	Anglès
Document:	Article ; recerca ; Versió publicada
Subject:	Graphitene ; Microbial electrolysis cell ; Novel materials ; Pt-functionalization ; Reduced graphene oxide
Published in:	International journal of hydrogen energy, Vol. 47, Issue 34 (April 2022) , p. 15397-15409, ISSN 1879-3487

DOI: 10.1016/j.ijhydene.2022.03.078

13 p, 1.9 MB

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Research literature > UAB research groups literature > Research Centres and Groups (research output) > Engineering > GENOCOV
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Articles > Published articles