光催化
磷化物
甲酸
制氢
复合数
氢
化学
材料科学
化学工程
核化学
催化作用
有机化学
复合材料
工程类
作者
Shixiang Duan,Sujuan Zhang,Susheng Chang,Sugang Meng,Yun Fan,Xiuzhen Zheng,Shifu Chen
标识
DOI:10.1016/j.ijhydene.2019.06.179
摘要
Developing an efficient, stable and low-cost photocatalytic hydrogen production from formic acid is a daunting challenge and has attracted the intense interest of many of researchers. In this paper, we report the synthesis of novel composite photocatalysts (Ni2P/Zn3In2S6 (ZIS6) and MoP/ZIS6) and their catalytic performance for H2 production reaction from formic acid under visible light irradiation, in which Ni2P and MoP were used as cocatalysts to enhance hydrogen generation activity of ZIS6. The photocatalytic hydrogen production rates of the optimized 1.5 wt% Ni2P/ZIS6 (45.73 μmol·h−1) and 0.25 wt% MoP/ZIS6 (92.69 μmol·h−1) were 3.5 times and 7.2 times higher than that of the pure ZIS6 (12.88 μmol·h−1), respectively. The apparent quantum efficiency at wavelength λ = 400 ± 10 nm for the two photocatalysts was about 1.8% and 6.4%, respectively. Significantly, it was found that the remarkable improvement of hydrogen production performance is attributed to the introduction of the phosphide cocatalysts, which can serve as a charge separation center and an active site for photocatalytic hydrogen production from the decomposition of formic acid. The reaction mechanism of photocatalytic hydrogen production from formic acid was also proposed.
科研通智能强力驱动
Strongly Powered by AbleSci AI