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显著增强H₂O₂光生成通过调节一个光活性共价有机框架的孔微环境

Tian-Xiang Luan¹, Qilin Wei¹, Chenglong Xin²

¹School of Chemistry and Chemical Engineering, Shandong Provincial Key Laboratory for Science of Material Creation and Energy Conversion, Science Center for Material Creation and Energy Conversion, Shandong University, Ji'nan, Shandong, 250100, P. R. China.

Advanced materials (Deerfield Beach, Fla.)

|November 13, 2025

概括

研究人员通过在共价有机框架 (COF) 中增强质量转移来提高光催化效率. 这种修改显著提高了过氧化 (H2O2) 生产和抗菌活性,证明了高性能光催化剂开发的新策略.

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
化学工程是化学工程的重要组成部分.

背景情况:

光催化效率研究经常忽视质量转移的局限性.
共价有机框架 (COF) 对光催化有希望,但需要优化.
提高光催化剂内的反应物和产品运输对于效率至关重要.

研究的目的:

调查增强质量转移对光催化过氧化 (H2O2) 生产的影响.
通过移植硫酸盐来调节与伊米达相关的光活性COF (PyNTB-COF) 的孔微环境.
评估修改后的COF的光催化抗菌活性.

主要方法:

在PyNTB-COF上植入硫酸盐以产生硫酸盐PyNTB-2SO3,增强孔隙微环境和质量转移.
在光催化下使用牺牲剂测量H2O2生产速度.
评估室外水样中的光催化抗菌活性.

主要成果:

硫化PyNTB-2SO3的H2O2产量达到15158μmolg-1h-1的速度,是原始COF的20.6倍.
观察到反应剂 (·O2−,H2O,H+) 和产品的增强质量转移动力学.
由于硫酸组,提高了电子孔分离和传输能力.
在15分钟内实现了>99%的细菌失活,而原始COF的时间约为6小时.

结论:

调节孔隙微环境以增强质量转移是提高光催化剂性能的高效策略.
硫化COF提供卓越的H2O2生成和抗菌活性.
这种方法在开发实用,高性能光催化剂方面具有重大潜力.

关键词:

在H2O2光电生成过程中.协价有机框架协价有机框架质量转移是指质量转移.孔孔微环境调制硫化硫化是一种硫化.

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