异质结
人工光合作用
杰纳斯
Boosting(机器学习)
材料科学
光催化
纳米尺度
纳米技术
光电子学
计算机科学
人工智能
催化作用
化学
生物化学
作者
Ke Su,Su‐Xian Yuan,Liyuan Wu,Zhaolei Liu,Min Zhang,Tong‐Bu Lu
出处
期刊:Small
[Wiley]
日期:2023-04-17
卷期号:19 (32)
被引量:12
标识
DOI:10.1002/smll.202301192
摘要
Artificial photosynthesis for CO2 reduction coupled with water oxidation currently suffers from low efficiency due to inadequate interfacial charge separation of conventional Z-scheme heterojunctions. Herein, an unprecedented nanoscale Janus Z-scheme heterojunction of CsPbBr3 /TiOx is constructed for photocatalytic CO2 reduction. Benefitting from the short carrier transport distance and direct contact interface, CsPbBr3 /TiOx exhibits significantly accelerated interfacial charge transfer between CsPbBr3 and TiOx (8.90 × 108 s-1 ) compared with CsPbBr3 :TiOx counterpart (4.87 × 107 s-1 ) prepared by traditional electrostatic self-assembling. The electron consumption rate of cobalt doped CsPbBr3 /TiOx can reach as high as 405.2 ± 5.6 µmol g-1 h-1 for photocatalytic CO2 reduction to CO coupled with H2 O oxidation to O2 under AM1.5 sunlight (100 mW cm-2 ), over 11-fold higher than that of CsPbBr3 :TiOx , and surpassing the reported halide-perovskite-based photocatalysts under similar conditions. This work provides a novel strategy to boost charge transfer of photocatalysts for enhancing the performance of artificial photosynthesis.
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