光催化
材料科学
红外线的
表面光电压
产量(工程)
光化学
可见光谱
碳纤维
原位
光电子学
纳米技术
催化作用
光学
化学
物理
复合数
量子力学
生物化学
复合材料
有机化学
冶金
光谱学
作者
Shengjie Bai,Wenhao Jing,Guiwei He,Chen Liao,Feng Wang,Ya Liu,Liejin Guo
出处
期刊:ACS Nano
[American Chemical Society]
日期:2023-05-24
卷期号:17 (11): 10976-10986
被引量:61
标识
DOI:10.1021/acsnano.3c03118
摘要
Photocatalytic CO2 conversion to fuels is a promising strategy for achieving global carbon neutrality. However, infrared light, which accounts for ∼50% of the full sunlight spectrum, has not yet been effectively utilized via photocatalysis. Here, we present an approach to directly power photocatalytic CO2 reduction using near-infrared light. This near-infrared light-responsive process occurs on an in situ generated Co3O4/Cu2O photocatalyst with a nanobranch structure. Photoassisted Kelvin probe force microscopy and relative photocatalytic measurements demonstrate the increase of surface photovoltage after illumination by near-infrared light. We also find that Cu(I) on this in situ generated Co3O4/Cu2O could facilitate the formation of a *CHO intermediate, thus enabling a high-performance CH4 production with a yield of 6.5 μmol/h and a selectivity of 99%. Moreover, we perform a practically oriented direct solar-driven photocatalytic CO2 reduction under concentrated sunlight and achieve a fuel yield of 12.5 μmol/h.
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