在D-π-A-A型结合微孔聚合物中进行分子工程,以促进光催化的进化
Changzhi Han1,2, Liwen Hu1, Shenglin Jin2
1Key Laboratory of Optoelectronic Chemical Materials and Devices (Ministry of Education), School of Optoelectronic Materials & Technology, Jianghan University, Wuhan 430056, P. R. China.
ACS applied materials & interfaces
|July 18, 2023
概括
研究人员设计了具有D-π-A-A结构的新型结合微孔聚合物 (CMP) 光催化剂. 优化的二[b,d]二烯-S-S-二氧化物 (BTDO) 含量显著提高了太阳能气的产生,达到230.06 mmol h−1 g−1.1.
科学领域:
- 材料科学 材料科学 材料科学
- 光催化作用的光催化
- 可再生能源可再生能源是可再生能源.
背景情况:
- 具有捐助者-π-接受者 (D-π-A) 或捐助者-接受者 (D-A) 结构的结合微孔聚合物 (CMP) 由于有效的电荷分离和高表面积,对太阳能驱动的产生有希望.
- 调整CMP的电子结构和活性位点对于增强光催化活性至关重要.
研究的目的:
- 设计和研究D-π-A-A型CMP光催化剂.
- 了解二[b,d]二烯-S-S-二氧化物 (BTDO) 受体含量对光催化生成的影响.
- 为了将结构修改与光催化性能相关联.
主要方法:
- 一系列D-π-A-A型CMPs的合成,具有不同的BTDO含量.
- 合成的CMP的电子结构和表面特性.
- 在模拟阳光下对光催化生产速度的评估.
主要成果:
- D-π-A-A CMP 中的 BTDO 含量显著影响电子结构,反应场所的可用性和电荷载体分离.
- 在PyT-BTDO-2聚合物中优化的BTDO含量增强了光吸收,水友性和活性部位.
- 优化的PyT-BTDO-2表现出一个高的H2生产率230.06 mmol h-1 g-1.1.
结论:
- D-π-A-A结构设计策略有效地提高了CMP光催化剂的性能.
- 控制受体含量是优化太阳能气生产的CMP的一个关键因素.
- 开发的CMP光催化剂显示了有效的太阳能驱动气发电的巨大潜力.
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