光催化
材料科学
异质结
剥脱关节
微乳液
超临界流体
化学工程
制氢
氢
纳米技术
分解水
光化学
化学
石墨烯
催化作用
光电子学
有机化学
肺表面活性物质
工程类
作者
Shaoru Tang,Yanan Ma,Haimeng Wang,Yuxuan Liang,Jing Wang,Dingyu Zhang,Beiming Cao,Qian Wang,Wei Li
出处
期刊:Chemsuschem
[Wiley]
日期:2023-04-07
卷期号:16 (11)
被引量:7
标识
DOI:10.1002/cssc.202202184
摘要
Construction of Z-scheme photocatalyst is an effective approach for using solar energy to produce hydrogen during water splitting. Herein, 2D/2D WO3 /g-C3 N4 heterojunction photocatalyst was synthesized by a convenient and green method including exfoliation and heterojunction procedures, in the reverse microemulsion system via supercritical carbon dioxide (scCO2 ). The resultant W/CN-10.3 composite exhibited enhanced photocatalytic activities towards the hydrogen evolution during water splitting with a hydrogen evolution rate of 688.51 μmol g-1 h-1 , which was more than 16 times higher than bulk g-C3 N4 with the same loading amount of Pt as cocatalyst. Due to its effective separation of photogenerated carriers and prolonged lifetime, more photoexcited electrons with high reduction ability could contribute to the production of H2 . Possible formation mechanism of 2D-2D WO3 /g-C3 N4 nanosheets via scCO2 in the reverse microemulsion system by the one-pot method has been proposed. This work provides an efficient and green strategy to synthesize 2D-2D heterojunction for the utilization in solar-to-fuel conversion.
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