Co3O4@Fe3O4/cellulose blend membranes for efficient degradation of perfluorooctanoic acid in the visible light-driven photo-Fenton system

被引：14

作者：

Gao, Jinhao ^{[1
]}

Chen, Wenqiang ^{[1
]}

Shi, Huaqiang ^{[2
]}

Li, Zhijian ^{[1
]}

Jing, Liming ^{[1
]}

Hou, Chen ^{[1
]}

Wang, Jianzhi ^{[3
]}

Wang, Yang ^{[1
]}

机构：

[1] Shaanxi Univ Sci & Technol, Natl Demonstrat Ctr Expt Light Chem Engn Educ, Shaanxi Prov Key Lab Papermaking Technol & Specia, Key Lab Paper Based Functional Mat China Natl Ligh, Xian 710021, Peoples R China

[2] PetroChina, Natl Engn Lab Explorat & Dev, Low Permeabil Oil & Gas Fields Changqing Oil Field, Changqing Oil Field, Beijing, Peoples R China

[3] Wuhan Inst Technol, Sch Chem Engn & Pharm, Key Lab Green Chem Process Minist Educ, Wuhan 430205, Peoples R China

来源：

SURFACES AND INTERFACES | 2022年 / 34卷

关键词：

Perfluorooctanoic acid; Cellulose; Heterogeneous catalysis; Photo-Fenton; PHOTOCATALYTIC DEGRADATION; PFOA; OXIDATION; AEROGEL; WATER;

D O I：

10.1016/j.surfin.2022.102302

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：

Co3O4@Fe3O4/cellulose membrane was synthesized by coating rod-like MOF-derived Fe3O4 with Co3O4 nano -particles and blending with cellulose solution, further applied in the visible light-driven photo-Fenton system for perfluorooctanoic acid (PFOA) degradation. In the H2O2/membrane/visible light system, the Electron para-magnetic resonance (EPR) analysis and scavenger experiment results suggested that PFOA degradation was a co-dependent mechanism via photogenerated electrons, photogenerated holes (h(+)) and various radical species, rather than a single active constituent. Co3O4@Fe(3)O4/cellulose membrane showed outstanding degradation performance, stability and recyclability under optimal conditions. Compared with pure Fe(3)O(4 )or Co3O4 nano -particles, the Co3O4@Fe3O4/cellulose membrane can degrade around 94.5% PFOA within 180 min in reaction system, and the leached Fe and Co was only 0.05 and 0.49 ppm, respectively. Moreover, Co3O4@Fe3O4/cellulose was reused by rinsing with ultra-pure water and the degradation capacity was still 80.4% after five cycles. The degradation pathway of PFOA also was proposed based on UHPLC-MS analysis.

引用

页数：9

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