期刊
SCIENCE CHINA-MATERIALS
卷 61, 期 9, 页码 1159-1166出版社
SCIENCE PRESS
DOI: 10.1007/s40843-018-9245-y
关键词
black phosphorus quantum dots; g-C3N4; photocatalysis; CO2 photoreduction
资金
- National Natural Science Foundation of China [51502146, U1404506, 21671113, 51772305, 51572270, U1662118]
- Chinese Academy of Sciences [GJHZ1819]
- Royal Society-Newton Advanced Fellowship [NA170422]
- Key Laboratory for Photonic and Electric Bandgap Materials, Ministry of Education (Harbin Normal University) [PEBM201702]
The development of low cost, metal free semiconductor photocatalysts for CO2 reduction to fuels and valuable chemical feedstocks is a practically imperative for reducing anthropogenic CO2 emissions. In this work, black phosphorus quantum dots (BPQDs) were successfully dispersed on a graphitic carbon nitride (g-C3N4) support via a simple electrostatic attraction approach, and the activities of BP@g-C3N4 composites were evaluated for photocatalytic CO2 reduction. The BP@g-C3N4 composites displayed improved carrier separation efficiency and higher activities for photocatalytic CO2 reduction to CO (6.54 mu mol g(-1) h(-1) at the optimum BPQDs loading of 1 wt%) compared with pure g-C3N4 (2.65 mu mol g(-1) h(-1)). This work thus identifies a novel approach towards metal free photocatalysts for CO2 photoreduction.
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