resumo
Supported single-metal atom catalysts (SACs) are constituted of isolated active metal centers, which are heterogenized on inert supports such as graphene, porous carbon, and metal oxides. Their thermal stability, electronic properties, and catalytic activities can be controlled via interactions between the single-metal atom center and neighboring heteroatoms such as nitrogen, oxygen, and sulfur. Due to the atomic dispersion of the active catalytic centers, the amount of metal required for catalysis can be decreased, thus offering new possibilities to control the selectivity of a given transformation as well as to improve catalyst turnover frequencies and turnover numbers. This review aims to comprehensively summarize the synthesis of Fe-SACs with a focus on anchoring single atoms (SA) on carbon/graphene supports. The characterization of these advanced materials using various spectroscopic techniques and their applications in diverse research areas are described. When applicable, mechanistic investigations conducted to understand the specific behavior of Fe-SACs-based catalysts are highlighted, including the use of theoretical models.
palavras-chave
OXYGEN REDUCTION REACTION; FE-N-C; HYDROGEN EVOLUTION REACTION; METAL-ORGANIC FRAMEWORKS; GRAPHITIC CARBON NITRIDE; NITROGEN-DOPED GRAPHENE; DENSITY-FUNCTIONAL-THEORY; X-RAY-ABSORPTION; ZEOLITIC-IMIDAZOLATE FRAMEWORKS; ELECTROCHEMICAL CO2 REDUCTION
categoria
Chemistry, Multidisciplinary
autores
Singh, B; Gawande, MB; Kute, AD; Varma, RS; Fornasiero, P; McNeice, P; Jagadeesh, RV; Beller, M; Zboril, R
nossos autores
Baljeet Singh
Bolseiro de pós-DoutoramentoGrupos
agradecimentos
A.D.K. would like to thanks University Grants Commision (UGC), Delhi, for providing NET-JRF fellowship. The authors gratefully acknowledge the support by the Operational Program Research, Development, and Education-European Regional Development Fund (ERDF) (project no. CZ.02.1.01/0.0/0.0/16_019/0000754) and by the ERDF project Development of pre-applied research in nanotechnology and biotechnology (project no. CZ.02.1.01/0.0/0.0/17_ 048/0007323) of the Ministry of Education, Youth and Sports of the Czech Republic. R.Z. acknowledges the support from the Czech Science Foundation, project no. 19-27454X. We are thankful to the European Research Council (EU project 670986-NoNaCat), and the State of Mecklenburg-Vorpommern for general and financial support.