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Chemcial Industry and Engineering 2018, Vol. 35 Issue (4) :10-16    DOI: 10.13353/j.issn.1004.9533.20181024
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Preparation of CdS/r-TiO2 Photocatalysts and Its Photocatalytic H2S Splitting Performance in Aqueous Solution
Zhu Guilian, Fan Tao, Gao Xiaochen
State Key Laboratory of Green Chemical and Industrial Catalysis, Shanghai Research Institute of Petrochemical Technology, SINOPEC, Shanghai 201208, China

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Abstract 

A CdS loaded reduced-TiO2 photocatalyst was successfully prepared through a sol-gel assisted solvothermal method, using tetrabutyl-titanate/cadmium acetate as raw materials and sodium borohydride as reductant. The properties of the composite photcatalysts were characterized by scanning electron microscopy, X-ray diffraction, UV-Vis diffuse reflectance spectroscopy, and X-ray photo-electric spectrometry. The photocatalytic H2S splitting performance was evaluated by the H2 production in a H2S saturated sodium hydroxide solution irradiated by a 300 W xenon lamp. The results indicate that CdS loading and reduction by NaHB4 could efficiently increase the light absorption of TiO2 in visible and near-infrared region. Additionally, CdS loaded on TiO2 provided more reaction site for H2S splitting and contributed greatly to the separation of photoexcited electrons and holes, which substantially enhance the photocatalytic property. The H2 production rate of the 5% CdS loaded r-TiO2 under full-spectrum light irradiation is 2.4 mmol·h-1·g-1, which is 5.5 times higher than that of the pristine TiO2.

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Articles by authors
Zhu Guilian
Fan Tao
Gao Xiaochen
Keywordstitunium dioxide;   cadmium sulfide;   hydrogen sulfide;   H2 production;   photocatalysis     
Received 2018-04-24;
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Zhu Guilian, Fan Tao, Gao Xiaochen.Preparation of CdS/r-TiO2 Photocatalysts and Its Photocatalytic H2S Splitting Performance in Aqueous Solution[J]  Chemcial Industry and Engineering, 2018,V35(4): 10-16
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