首页|Assembling S-scheme heterojunction between basic bismuth nitrate and bismuth tungstate with promoting charges'separation for accelerated photocatalytic sulfamethazine degradation
Assembling S-scheme heterojunction between basic bismuth nitrate and bismuth tungstate with promoting charges'separation for accelerated photocatalytic sulfamethazine degradation
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The S-scheme heterojunction has garnered increasing attention due to its remarkable oxidation capacity and efficient separation of photogenerated carriers.In this study,a one-pot glycerol-assisted hydrothermal process was utilized to successfully synthesize S-scheme heterojunction photocatalysts comprising basic bismuth nitrate(BBN)and bismuth tungstate(BWO).Interestingly,the BBN/BWO heterogeneous photo-catalysts exhibited the highest photocatalytic properties.The optimized product achieved the degradation of sulfamethazine(SMZ)within 1 h,with a kinetic constant(k)value of 0.05818 min-1.The degradation process was influenced significantly by·O2-and h+species.To determine the degradation pathway of SMZ in the presence of BBN/BWO-0.6,liquid chromatography-mass spectrometry(LC-MS)analysis was performed,which revealed a decrease in the toxicity of intermediates and products.The enhanced pho-tocatalytic activity can be attributed to the internal electric field(IEF)of the S-scheme heterojunction between BBN and BWO,effectively promoting the separation of photogenerated carriers.This research presents a viable approach for developing S-scheme heterojunctions in SMZ photodegradation and other environmental applications.
Wenhan Chen、Meng Dai、Li Xiang、Shan Zhao、Shuguang Wang、Zuoli He
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Shandong Key Laboratory of Water Pollution Control and Resource Reuse,Shandong Key Laboratory of Environmental Processes and Health,School of Environmental Science and Engineering,Shandong University,Qingdao 266237,China
CEDAR,Knight Cancer Institute,School of Medicine,Oregon Health and Science University,Portland,OR 97201,United States
Weihai Research Institute of Industrial Technology of Shandong University,Shandong University,Weihai 264209,China
National Natural Science Foundation of ChinaYoung Taishan Scholars Program of Shandong ProvinceYouth Interdisciplinary Science and Innovative Research Groups of Shandong University supported by the Fundamental Research Shandong University Future Youth Grant Program
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