材料科学
光催化
氮化碳
带隙
制氢
纳米颗粒
可见光谱
载流子
兴奋剂
碳纤维
吸收(声学)
氮化硼
石墨氮化碳
化学工程
相(物质)
纳米技术
氢
光电子学
催化作用
化学
复合材料
有机化学
复合数
工程类
作者
Lei Ding,Fei Qi,Yanfei Li,Jian Lin,Yang Su,Yi‐Han Song,Lijing Wang,Haizhu Sun,Cuiyan Tong
标识
DOI:10.1016/j.jcis.2022.01.100
摘要
The high photogenerated carrier recombination rate and the low visible light utilization limit the development of graphitic carbon nitride (CN) in industrial photocatalytic H2 generation. Herein, 1T-phase MoS2 nanoparticles with high conductivity and more active sites are in-situ grown on B-doped carbon nitride (CNB) nanosheets through a one-step hydrothermal method. The doping of boron element effectively improves the harvesting visible light ability by tuning the energy gap, while the introduction of 1T-phase MoS2 successfully increases the carrier transfer rate by suppressing charge trapping. An optimized H2 production activity of 5334 μmol h-1 g-1 with the apparent quantum efficiency of 10.2% is achieved by 1T-MoS2/CNB sample, which is 167 times higher than that of pure CN. The mechanism is systematically illustrated by the combination of DFT calculations and transient absorption measurements. This work provides a new way for the construction of transition metal-derived co-catalysts in photocatalytic hydrogen energy storage.
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