3D-printed MoS_(2)/Ni electrodes with excellent electro-catalytic performance and long-term stability for dechlorination of florfenicol

作     者：Jianhui Xu Pengxu Wang Shenggui Chen Lei Li Dan Li Yunfei Zhang Qi Wu Jinhong Fan LumingMa Jianhui Xu;Pengxu Wang;Shenggui Chen;Lei Li;Dan Li;Yunfei Zhang;Qi Wu;Jinhong Fan;Luming Ma

作者机构：School of Environment and Civil EngineeringDongguan University of TechnologyDongguan 523808China School of Art and DesignGuangzhou Panyu PolytechnicGuangzhou 511483China National Engineering Research Center for Urban Pollution ControlState Key Laboratory of Pollution Control and Resources ReuseCollege of Environmental Science and EngineeringTongji UniversityShanghai 200092China Dongguan Institute of Science and Technology InnovationDongguan University of TechnologyDongguan 523808China School of Mechanical EngineeringDongguan University of TechnologyDongguan 523808China 

出 版 物：《Journal of Environmental Sciences》 (环境科学学报（英文版）)

年 卷 期：2024年第137卷第3期

页      面：420-431页

核心收录：

学科分类：083002[工学-环境工程] 0830[工学-环境科学与工程（可授工学、理学、农学学位）] 08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 080502[工学-材料学] 

基　　金：supported by the Guangdong Province Youth Innovative Talents Project in Higher Education (No.2018KQNCX257) the Guangdong Province Enterprise Science and Technology Commissioner Project (No.GDKTP2021048000) the Key-Area Research and Development Program of Guangdong Province (No.2020B090923002) the Guangdong-Dongguan Joint Fund (No.2019B151530005) the Guangdong Basic and Applied Basic Research Foundation (No.2019A1515110497) the National Natural Science Foundation of China (No.41907292) the National Natural Science Foundation of China (No.21876130)。 

主　　题：3D-print Electroreduction MoS_(2)/Ni Antibiotic Florfenicol 

摘      要：Here,we report the production of 3D-printed MoS_(2)/Ni electrodes(3D-MoS_(2)/Ni)with longterm stability and excellent performance by the selective laser melting(SLM)technique.As a cathode,the obtained 3D-MoS_(2)/Ni could maintain a degradation rate above 94.0%for forfenicol(FLO)when repeatedly used 50 times in water.We also found that the removal rate of FLO by 3D-MoS_(2)/Ni was about 12 times higher than that of 3D-printed pure Ni(3D-Ni),attributed to the improved accessibility of H^(*).In addition,the electrochemical characterization results showed that the electrochemically active surface area of the 3D-MoS_(2)/Ni electrode is about 3-fold higher than that of the 3D-Ni electrode while the electrical resistance is 4 times lower.Based on tert-butanol suppression,electron paramagnetic resonance and triple quadrupole mass spectrometer experiments,a“dual pathmechanism and possible degradation pathway for the dechlorination of FLO by 3D-MoS_(2)/Ni were proposed.Furthermore,we also investigated the impacts of the cathode potential and the initial pH of the solution on the degradation of FLO.Overall,this study reveals that the SLM 3D printing technique is a promising approach for the rapid fabrication of high-stability metal electrodes,which could have broad application in the control of water contaminants in the environmental field.