【摘 要】
：
Developing an efficient photocatalyst,catalyzing formic acid (FA) dehydrogenation,can satisfy the demand of the H2 energy.Herein,a graphitic carbon nitride (g-C
【机 构】
：
School of Chemistry and Chemical Engineering, Xi’an University of Architecture and Technology, Xi’an
论文部分内容阅读
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 PdsAg5 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 ℃,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.
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