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Evidence of improved electron–hole separation in Fe@g-C3N4 Photocatalysts

Authors: 

Hanggara Sudrajat

Source title: 
Materials Research Express, 5(9), 2018 (ISI)
Academic year of acceptance: 
2018-2019
Abstract: 

Herein, Fe is loaded into g-C3N4 nanosheets (Fe@g-C3N4) to form a photoactive system for H2 evolution. The loaded Fe species are present in the +3 oxidation state in the form of amorphous clusters. Upon loading 0.4 atomic% of Fe into g-C3N4, the H2 evolution rate under visible light increases from 2.19 μmol/g centerdot h (g-C3N4) to 17.39 μmol/g centerdot h (0.4Fe@g-C3N4). Meanwhile, the population of photoexcited electrons increases by 10.6 times in 0.4Fe@g-C3N4. The improved separation of electron-hole is behind the enhanced photoactivity for H2 evolution with Fe@g-C3N4.