g-C3N4@α-Fe2O3/C Photocatalysts: Synergistically Intensified Charge Generation and Charge Transfer for NADH Regeneration

By Yizhou Wu, Jesse Ward-Bond, Donglin Li, Shaohua Zhang, Jiafu Shi, Zhongyi Jiang. 2018

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Graphitic carbon nitride (g-C3N4) is an emergent metal-free photocatalyst because of its band position, natural abundance, and facile preparation. Synergetic intensification of charge generation and charge transfer of g-C3N4 to increase solar-to-chemical efficiency remains a hot yet challenging issue. Herein, a nanoshell with two moieties of α-Fe2O3 and carbon (C) is in situ formed on the surface of a g-C3N4 core through calcination of Fe3+/polyphenol-coated melamine, thus acquiring g-C3N4@α-Fe2O3/C core@shell photocatalysts. The α-Fe2O3 moiety acts as an additional photosensitizer, offering more photogenerated electrons, whereas the C moiety bridges a “highway” to facilitate the electron transfer either from α-Fe2O3 moiety to g-C3N4 or from g-C3N4 to C moiety. By tuning the proportion of these two moieties in the nanoshell, a photocurrent density of 3.26 times higher than pristine g-C3N4 is obtained. When utilized for photocatalytic regeneration of reduced nicotinamide adenine dinucleotide (NADH, a domin...

Subfields: Materials Chemistry, Molecular Biology, Renewable Energy, Sustainability and the Environment

View Paper: https://www.semanticscholar.org/paper/f8f689523a23c16b0d1bb1e0d6dd68d5e4f4e0d5