Black phosphorus quantum dot/g-C3N4 composites for enhanced CO2 photoreduction to CO

作者：Han, Chunqiu; Li, Jue; Ma, Zhaoyu; Xie, Haiquan; Waterhouse, Geoffrey I. N.; Ye, Liqun^*; Zhang, Tierui^*

来源：Science China-Materials, 2018, 61(9): 1159-1166.

DOI：10.1007/s40843-018-9245-y

• black phosphorus quantum dots
• g-C3N4
• photocatalysis
• CO2 photoreduction

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.

• 出版日期2018-9
• 单位哈尔滨师范大学; 中国科学院理化技术研究所; 南阳师范学院; 中国科学院大学