Enhancing catalytic activity of CuCoFe-layered double oxide towards peroxymonosulfate activation by coupling with biochar derived from durian peel for antibiotic degradation: The role of C=O in biochar and underlying mechanism of built-in electric field

被引：0

作者：

Dung N.T. ^{[1
]}

Khiem T.C. ^{[2
]}

Thao N.P. ^{[1
]}

Phu N.A. ^{[1
]}

Son N.T. ^{[1
]}

Dat T.Q. ^{[1
]}

Phuong N.T. ^{[3
]}

Trang T.T. ^{[4
]}

Nhi B.D. ^{[5
]}

Thuy N.T. ^{[6
,7
]}

Lin K.-Y.A. ^{[2
]}

Huy N.N. ^{[7
,8
]}

机构：

[1] Faculty of Physics and Chemical Engineering, Le Quy Don Technical University, 236 Hoang Quoc Viet St., Bac Tu Liem District, Hanoi

[2] Innovation and Development Center of Sustainable Agriculture and Department of Environmental Engineering, National Chung Hsing University, 250 Kuo-Kuang Road, Taichung

[3] Institute for Tropical Technology, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet St., Cau Giay, Hanoi

[4] Institute of Science and Technology for Energy and Environment, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet St., Cau Giay District, Hanoi

[5] Faculty of Chemical and Environmental Technology, Viet Tri University of Industry, 9 Tien Son St., Phu Tho Province, Viet Tri City

[6] School of Chemical and Environmental Engineering, International University, Quarter 6, Linh Trung Ward, Thu Duc City, Ho Chi Minh City

[7] Vietnam National University Ho Chi Minh City, Linh Trung Ward, Thu Duc City, Ho Chi Minh City

[8] Faculty of Environment and Natural Resources, Ho Chi Minh City University of Technology (HCMUT), 268 Ly Thuong Kiet Street, District 10, Ho Chi Minh City

来源：

Chemosphere | 2024年 / 361卷

关键词：

Biochar; Built-in electric field; CO functional group; CuCoFe-LDO; PMS activation;

D O I：

10.1016/j.chemosphere.2024.142452

中图分类号：

学科分类号：

摘要：

CuCoFe-LDO/BCD was successfully synthesized from CuCoFe-LDH and biochar derived from durian shell (BCD). Ciprofloxacin (CFX) degraded more than 95% mainly by O2•− and 1O2 in CuCoFe-LDO/BCD(2/1)/PMS system within 10 min with a rate constant of 0.255 min−1, which was 14.35 and 2.66 times higher than those in BCD/PMS and CuCoFe-LDO/PMS systems, respectively. The catalytic system exhibited good performance over a wide pH range (3–9) and high degradation efficiency of other antibiotics. Built-in electric field (BIEF) driven by large difference in the work function/Fermi level ratio between CuCoFe-LDO and BCD accelerated continuous electron transfer from CuCoFe-LDO to BCD to result in two different microenvironments with opposite charges at the interface, which enhanced PMS adsorption and activation via different directions. As a non-radical, 1O2 was mainly generated via PMS activation by C=O in BCD. The presence of C=O in BCD resulted in an increase in atomic charge of C in C=O and redistributed the charge density of other C atoms. As a result, strong adsorption of PMS at C atom in C=O and other C with a high positive charge was favorable for 1O2 generation, whereas an enhanced adsorption of PMS at negatively charged C accounted for the generation of •OH and SO4•−. After adsorption, electrons in C of BCD became deficient and were fulfilled with those transferred from CuCoFe-LDO driven by BIEF, which ensured the high catalytic activity of CuCoFe-LDO/BCD. O2•−, on the other hand, was generated via several pathways that involved in the transformation of •OH and SO4•− originated from PMS activation by the transition of metal species in CuCoFe-LDO and negatively charged C in BCD. This study proposed a new idea of fabricating a low-cost metal-LDH and biomass-derived catalyst with a strong synergistic effect induced by BIEF for enhancing PMS activation and antibiotic degradation. © 2024 Elsevier Ltd

引用

共 1 条

[1] Modified layered double hydroxides by using Fe-rich porous biochar derived from petrochemical wastewater sludge for enhancing heterogeneous activation of peroxymonosulfate towards chloramphenicol degradation
Yan, Su
Li, Siqin
Zhang, Sicheng
Qian, Lina
Yong, Xiaoyu
Zhang, Xueying
Zhou, Jun
JOURNAL OF WATER PROCESS ENGINEERING, 2024, 65

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