Catalyst-Free Photochemical Activation of Peroxymonosulfate in Xanthene-Rich Systems for Fenton-Like Synergistic Decontamination: Efficacy of Proton Transfer Process

被引：70

作者：

Qin, Fanzhi ^{[1
,2
]}

Almatrafi, Eydhah ^{[3
]}

Zhang, Chen ^{[1
,2
]}

Huang, Danlian ^{[1
,2
]}

Tang, Lin ^{[1
,2
]}

Duan, Abing ^{[1
,2
]}

Qin, Deyu ^{[1
,2
]}

Luo, Hanzhuo ^{[1
,2
]}

Zhou, Chengyun ^{[1
,2
,3
]}

Zeng, Guangming ^{[1
,2
,3
]}

机构：

[1] Hunan Univ, Coll Environm Sci & Engn, Changsha 410082, Peoples R China

[2] Hunan Univ, Key Lab Environm Biol & Pollut Control, Minist Educ, Changsha 410082, Peoples R China

[3] King Abdulaziz Univ, Fac Engn Rabigh, Ctr Excellence Desalinat Technol, Ctr Res Excellence Renewable Energy & Power Syst,D, Jeddah 21589, Saudi Arabia

来源：

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION | 2023年 / 62卷 / 20期

基金：

中国国家自然科学基金;

关键词：

Advanced Oxidation; Catalyst-Free; Environmental Chemistry; Photochemistry; Proton Transfer Process; OXIDATION; DEGRADATION; FLUORESCEIN; KINETICS; PERSULFATE; DESIGN; DYES;

D O I：

10.1002/anie.202300256

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Catalyst-free visible light assisted Fenton-like catalysis offers opportunities to achieve the sustainable water decontamination, but the synergistic decontamination mechanisms are still unclear, especially the effect of proton transfer process (PTP). The conversion of peroxymonosulfate (PMS) in photosensitive dye-enriched system was detailed. The photo-electron transfer between excited dye and PMS triggered the efficient activation of PMS and enhanced the production of reactive species. Photochemistry behavior analysis and DFT calculations revealed that PTP was the crucial factor to determine the decontamination performance, leading to the transformation of dye molecules. The excitation process inducing activation of whole system was composed of low energy excitations, and the electrons and holes were almost contributed by LUMO and HOMO. This work provided new ideas for the design of catalyst-free sustainable system for efficient decontamination.

引用

页数：9

共 47 条

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