增强的内建电场促进了通过引入 B←N 配位键的聚合物的光催化析氢性能。
Enhanced Built-in Electric Field Promotes Photocatalytic Hydrogen Performance of Polymers Derived from the Introduction of B←N Coordination Bond.
机构信息
State Key Laboratory of Applied Organic Chemistry (Lanzhou University), Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province, College of Chemistry and Chemical Engineering, Lanzhou University, No. 222 South Tianshui Road, Lanzhou, Gansu, 730000, P. R. China.
College of Chemistry and Pharmaceutical Engineering, Huanghuai University, No.76 Kaiyuan Avenue, Zhumadian, Henan, 463000, P. R. China.
出版信息
Adv Sci (Weinh). 2022 Dec;9(35):e2204055. doi: 10.1002/advs.202204055. Epub 2022 Oct 26.
High concentrations of active carriers on the surface of a semiconductor through energy/electron transfer are the core process in the photocatalytic hydrogen production from water. However, it remains a challenge to significantly improve photocatalytic performance by modifying simple molecular modulation. Herein, a new strategy is proposed to enhance the photocatalytic hydrogen evolution performance using boron and nitrogen elements to construct B←N coordination bonds. Experimental results show that polynaphthopyridine borane (PNBN) possessing B←N coordination bonds shows a hydrogen evolution rate of 217.4 µmol h , which is significantly higher than that of the comparison materials 0 µmol h for polyphenylnaphthalene (PNCC) and 0.66 µmol h for polypyridylnaphthalene (PNNC), mainly attributed to the formation of a strong built-in electric field that promotes the separation of photo-generated electrons/holes. This work opens up new prospects for the design of highly efficient polymeric photocatalysts at the molecular level.
通过能量/电子转移在半导体表面上高浓度的活性载体是光催化水制氢的核心过程。然而，通过简单的分子修饰来显著提高光催化性能仍然是一个挑战。本文提出了一种利用硼和氮元素构建 B←N 配位键来增强光催化产氢性能的新策略。实验结果表明，具有 B←N 配位键的硼氮配位键聚合物（PNBN）的产氢速率为 217.4µmol h ，明显高于对比材料 0µmol h 的聚苯并萘（PNCC）和 0.66µmol h 的多吡啶萘（PNNC），主要归因于形成了强的内建电场，促进了光生电子/空穴的分离。这项工作为在分子水平上设计高效的聚合物光催化剂开辟了新的前景。
Zotero 插件