Cavity-confined acceleration of iron cycle for the Fenton-like reaction by β-CD-benzoquinone host-guest complex under visible irradiation

被引：17

作者：

Fu, Liting ^{[1
]}

Zhao, Zhenwen ^{[2
]}

Ma, Jiahai ^{[1
]}

Hu, Xuefeng ^{[3
]}

机构：

[1] Univ Chinese Acad Sci, Sch Chem & Chem Engn, Beijing 100049, Peoples R China

[2] Chinese Acad Sci, Inst Chem, Beijing Mass Spectrum Ctr, Beijing 100190, Peoples R China

[3] Chinese Acad Sci, Yantai Inst Coastal Zone Res, Key Lab Coastal Environm Proc & Ecol Remediat, Yantai 264003, Shandong, Peoples R China

来源：

CATALYSIS COMMUNICATIONS | 2015年 / 65卷

关键词：

Host-guest complex; Iron cycle; Visible irradiation; Fenton; DISSOLVED ORGANIC-MATTER; AQUEOUS-SOLUTION; OXIDATION; DEGRADATION; CYCLODEXTRIN; WATER; PHOTOREDUCTION; ENHANCEMENT; POLLUTANTS; MECHANISM;

D O I：

10.1016/j.catcom.2015.02.012

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The catalyst (CDBQ) that was prepared from beta-cydodextrin (beta-CD) and 2,5-dihydroxy-1,4-benzoquinone (2,5-DBQ) achieved the cavity-confined acceleration of iron cycle under visible irradiation. The semi-quinone-like (SQ) radical was generated from photoexcitation of 2,5-DBQ within the beta-CD's cavity. The SQ radical as an electron donor could coordinate with iron ions, and thus 2,5-DBQ shuttled one electron between Fe3+ and Fe2+ via Fe-dihydroxybenzoquinone complex process. In Fenton reactions, CDBQ greatly increased the HO center dot yield, and thus significantly accelerated the degradation of dyes. The cavity-confined acceleration of iron cycle has promising applications in photo-Fenton system for the efficient decontamination for wastewater. (C) 2015 Elsevier B.V. All rights reserved.

引用

页码：96 / 101

页数：6

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