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- Title
Schiff-base-rich g-CxN4 supported PdAg nanowires as an efficient Mott–Schottky catalyst boosting photocatalytic dehydrogenation of formic acid.
- Authors
Liu, Hu; Li, Xue-Xiang; Liu, Xin-Yang; Ma, Zhen-Hui; Yin, Zhou-Yang; Yang, Wei-Wei; Yu, Yong-Sheng
- Abstract
Developing an efficient photocatalyst, catalyzing formic acid (FA) dehydrogenation, can satisfy the demand of the H2 energy. Herein, a graphitic carbon nitride (g-CxN4)-based nanosheet (x = 3.2, 3.6 or 3.8) with melem rings conjugated by Schiff-base bond (N=C–C=N) was synthesized, tuning the bandgaps (Eg) of graphitic carbon nitride (g-C3N4) in the range of 1.8 < Eg < 2.7 eV, and grown PdAg nanowires (NWs) on its surface forming an efficient PdAg NWs/g-CxN4 Mott–Schottky heterojunction for enhancing dehydrogenation photocatalysis of FA. The boosting photocatalysis benefits from the Schiff-base bond tuning the Eg of g-C3N4 and strongly coupling from the heterojunction. Among the heterojunction, the Pd5Ag5 NWs/g-C3.6N4 exhibits the best dehydrogenation photocatalysis of FA [turnover frequency (TOF) = 1230 h−1] under visible light (λ > 400 nm) without any additive at 25 °C, which is the best value among ever-reported ones. This work provides a new strategy to boost dehydrogenation photocatalysis of FA, which will be promising for practical application of H2 in future energy field.
- Publication
Rare Metals, 2021, Vol 40, Issue 4, p808
- ISSN
1001-0521
- Publication type
Article
- DOI
10.1007/s12598-020-01637-5