Construction of vesicle CdSe nano-semiconductors photocatalysts with improved photocatalytic activity: Enhanced photo induced carriers separation efficiency and mechanism insight |
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| Authors: | Jiangsu Wen Changchang M Pengwei Huo Xinlin Liu Maobin Wei Yang Liu Xin Yao Zhongfei Ma and Yongsheng Yan |
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| Affiliation: | 1.School of the Environment and Safety Engineering, Jiangsu University, Zhenjiang 212013, China. E-mail: wenjiangshu@sina.cn,1.School of the Environment and Safety Engineering, Jiangsu University, Zhenjiang 212013, China. E-mail: wenjiangshu@sina.cn,2.School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, China,3.School of Energy and Power Engineering, Jiangsu University, Zhenjiang 212013, China,2.School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, China,2.School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, China,2.School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, China,1.School of the Environment and Safety Engineering, Jiangsu University, Zhenjiang 212013, China. E-mail: wenjiangshu@sina.cn
4.State Key Laboratory of Coal Resources and Safe Mining, China University of Mining and Technology, Xuzhou 221008, China and 2.School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, China |
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| Abstract: | Visible-light-driven photocatalysis as a green technology has attracted a lot of attention due to its potential applications in environmental remediation. Vesicle Cd Se nano-semiconductor photocatalyst are successfully prepared by a gas template method and characterized by a variety of methods. The vesicle Cd Se nano-semiconductors display enhanced photocatalytic performance for the degradation of tetracycline hydrochloride, the photodegradation rate of78.824% was achieved by vesicle Cd Se, which exhibited an increase of 31.779% compared to granular Cd Se. Such an exceptional photocatalytic capability can be attributed to the unique structure of the vesicle Cd Se nano-semiconductor with enhanced light absorption ability and excellent carrier transport capability. Meanwhile, the large surface area of the vesicle Cd Se nano-semiconductor can increase the contact probability between catalyst and target and provide more surface-active centers. The photocatalytic mechanisms are analyzed by active species quenching. It indicates that h+and UO_2~-are the main active species which play a major role in catalyzing environmental toxic pollutants. Simultaneously, the vesicle Cd Se nano-semiconductor had high efficiency and stability. |
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| Keywords: | Nano-semiconductor Vesicle CdSe Gas template Photocatalyst |
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