TY - JOUR
T1 - A novel 3-dimensional graphene-based cobalt-manganese bimetallic layered double hydroxide:Formation mechanism and performance in photo-assisted permonosulfate-activated degradation of sulfamethoxazole in aqueous solution
AU - Liu, Zhibo
AU - Duan, Xiaoyue
AU - Sarmah, Ajit K.
AU - Zhao, Xuesong
AU - Ren, Xin
AU - Sun, Bo
N1 - Funding Information:
This project was supported by Grants from the National Natural Science Foundation of China ( 52270038 ) Natural Science Foundation project of Jilin Province ( 20220101073JC and 20230101220JC ) Science and technology research project of Education Department of Jilin Province ( JJKH20220450KJ and JJKH20220447KJ )
Publisher Copyright:
© 2023
PY - 2023/11/1
Y1 - 2023/11/1
N2 - Sulfamethoxazole (SMX) is a common antibiotic used mainly for bacterial treatment. In this study, a novel three-dimensional cobalt-manganese bimetallic layered double hydroxide graphene hydrogel (CoMn-LDHs/rGO) has been prepared for photo-assisted permonosulfate (PMS)-activated degradation of SMX in water. Compared with the CoMn-LDHs/rGO + PMS and CoMn-LDHs/rGO + Vis systems, the degradation effect of CoMn-LDHs/rGO + PMS + Vis system is the best, and the degradation effect of CoMn-LDHs/rGO system could reach more than 98% under the optimal conditions. After 10 cycles, the catalytic degradation performance of CoMn-LDHs/rGO system remained good, while effectively preventing the leaching of metal ions. Based on the synergistic effect of photocatalysis and PMS oxidation, electron spin resonance spectroscopy and quenching experiments showed that three active substances (•OH, •SO4− and O2•−) were involved in the degradation of SMX. Density functional theory and liquid chromatography-mass spectrometry (LC-MS) results further proposed the SMX degradation transformation calculation. As expected, the study of the reaction mechanism of 3D CoMn-LDHs/rGO assisted PMS activation under visible light provides an efficient and rapid method for the sustainable degradation of pollutants in water system.
AB - Sulfamethoxazole (SMX) is a common antibiotic used mainly for bacterial treatment. In this study, a novel three-dimensional cobalt-manganese bimetallic layered double hydroxide graphene hydrogel (CoMn-LDHs/rGO) has been prepared for photo-assisted permonosulfate (PMS)-activated degradation of SMX in water. Compared with the CoMn-LDHs/rGO + PMS and CoMn-LDHs/rGO + Vis systems, the degradation effect of CoMn-LDHs/rGO + PMS + Vis system is the best, and the degradation effect of CoMn-LDHs/rGO system could reach more than 98% under the optimal conditions. After 10 cycles, the catalytic degradation performance of CoMn-LDHs/rGO system remained good, while effectively preventing the leaching of metal ions. Based on the synergistic effect of photocatalysis and PMS oxidation, electron spin resonance spectroscopy and quenching experiments showed that three active substances (•OH, •SO4− and O2•−) were involved in the degradation of SMX. Density functional theory and liquid chromatography-mass spectrometry (LC-MS) results further proposed the SMX degradation transformation calculation. As expected, the study of the reaction mechanism of 3D CoMn-LDHs/rGO assisted PMS activation under visible light provides an efficient and rapid method for the sustainable degradation of pollutants in water system.
KW - Bimetallic layered double hydroxide
KW - Permonosulfate
KW - Reaction mechanism
KW - Sulfamethoxazole
KW - Visible light
UR - https://www.scopus.com/pages/publications/85168126746
U2 - 10.1016/j.envpol.2023.122397
DO - 10.1016/j.envpol.2023.122397
M3 - Article
C2 - 37597732
AN - SCOPUS:85168126746
SN - 0269-7491
VL - 336
JO - Environmental Pollution
JF - Environmental Pollution
M1 - 122397
ER -