Citation: Jiayi Guo, Liangxiong Ling, Qinwei Lu, Yi Zhou, Xubiao Luo, Yanbo Zhou. Degradation of chloroxylenol by CoS_x activated peroxomonosulfate: Role of cobalt-sulfur ratio[J]. Chinese Chemical Letters, ;2025, 36(4): 110380. doi: 10.1016/j.cclet.2024.110380 shu

Degradation of chloroxylenol by CoS_x activated peroxomonosulfate: Role of cobalt-sulfur ratio

Jiayi Guo ^a ,
Liangxiong Ling ^a ,
Qinwei Lu ^a ,
Yi Zhou ^a ,
Xubiao Luo ^b ,
Yanbo Zhou ^{a, b, c, *,}

a.
State Environmental Protection Key Laboratory of Environmental Risk Assessment and Control on Chemical Process, East China University of Science and Technology, Shanghai 200237, China
b.
School of Life Sciences, Key Laboratory of Jiangxi Province for Functional Biology and Pollution Control in Red Soil Regions, Jinggangshan University, Ji'an 343009, China
c.
State Key Laboratory of Coal Liquification, Gasification and Utilization with High Efficiency and Low Carbon Technology, Shanghai 200237, China

zhouyanbo@ecust.edu.cn

yanbo_zhou@163.com

Received Date: 22 May 2024
Revised Date: 23 July 2024
Accepted Date: 28 August 2024
Available Online: 29 August 2024

Figures(6)

Cobalt sulfide has received widespread attention in the advanced oxidation treatment of wastewater, and its catalytic activity is influenced by crystal structure and exposed active sites. This work successfully constructed three types of cobalt sulfides, namely Co₉S₈, Co₃S₄ and CoS₂, by changing the molar ratio of cobalt to sulfur. The results showed that the degradation efficiency of Co₉S₈, Co₃S₄ and CoS₂ on chloroxylenol by activated peroxomonosulfate (PMS) were 100%, 88.70% and 67.73%, respectively. Combined with density functional theory (DFT), the structural properties and reaction energy barriers of different cobalt-sulfur ratios were calculated. As the ratio of cobalt to sulfur increases, the sulfur vacancies realized a fuller exposure of active sites (Co²⁺_surf.) on the surface of the catalysts, with a highly linear relationship with the reaction rate constant (R² = 0.945). This work explores the structure-activity relationship between cobalt sulfur ratio and degradation efficiency, which can guide new catalyst synthesis.
- Peroxymonosulfate,
- Fenton-like reaction,
- Cobalt sulfides,
- Chloroxylenol degradation,
- Morphology control
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通讯作者: 陈斌, bchen63@163.com

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沈阳化工大学材料科学与工程学院沈阳 110142

Degradation of chloroxylenol by CoSx activated peroxomonosulfate: Role of cobalt-sulfur ratio

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通讯作者: 陈斌, bchen63@163.com

Degradation of chloroxylenol by CoS_x activated peroxomonosulfate: Role of cobalt-sulfur ratio