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Polymeric carbon nitride coupled with a molecular thiomolybdate catalyst: Exciton and charge dynamics in light-driven hydrogen evolution
, Article Sustainable Energy and Fuels ; Volume 4, Issue 12 , 2020 , Pages 6085-6095 ; Akbarzadeh, E ; Li, C ; Mitoraj, D ; Krivtsov, I ; Adler, C ; Diemant, T ; Biskupek, J ; Kaiser, U ; Im, C ; Heiland, M ; Jacob, T ; Streb, C ; Dietzek, B ; Beranek, R ; Sharif University of Technology
Royal Society of Chemistry
2020
Abstract
Solar hydrogen evolution from water is a necessary step to overcome the challenges of rising energy demand and associated environmental concerns. Low-cost photocatalytic architectures based on polymeric light absorbers coupled to highly efficient molecular catalysts might represent an attractive platform to address this issue. However, to-date, our mechanistic knowledge of these systems is still largely underdeveloped. In this study, a molecular molybdenum sulfide hydrogen evolving catalyst, [Mo3S13]2-, is loaded onto polymeric carbon nitride (CNx) photoabsorber by impregnation. The resulting composite shows enhanced photocatalytic activity for hydrogen evolution compared to pristine CNx...