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MATERIALS RESEARCH BULLETIN · 2019 · IF 3.355

Enhanced photocatalytic activities of CdS-BiOCl/PAN composites towards photocatalytic hydrogen evolution

Qinyu Zhang,Guanqiong Li,Jie Bai,Ruifang He,Chunping Li

In this work, we successfully synthesized a series of CdS-BiOCl/PAN composites by two-step method including electrospinning process and hydrothermal process. The CdS-BiOCl/PAN composites showed great photocatalytic performance and chemical stability for H 2 production under UV–vis light irradiation due to the synergistic effect among CdS, BiOCl and PAN. Meanwhile, the content of CdS in CdS-BiOCl/PAN composites plays an important role in photo-catalytic abilities. In addition, according to the analysis about the photocatalyst, the possible photocatalytic mechanism and synergistic interaction were further discussed.

研究领域: 材料科学 · 环境科学

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JOURNAL OF ALLOYS AND COMPOUNDS · 2018 · IF 3.779

A facile two-step method to synthesize immobilized CdS/BiOCl film photocatalysts with enhanced photocatalytic activities

Jiaqian Zhu,Yinghua Shen,Xiang Yu,Jia Guo,Yi Zhu,Yuanming Zhang

Immobilized CdS/BiOCl film photocatalysts were successfully synthesized by a facile two-step hydrothermal-hydrolysis method. The structures, morphologies, photocatalytic properties and reusabilities of the samples were studied. The photocatalytic activities of CdS/BiOCl were significantly improved compared with pure BiOCl. The photocatalytic activity of 6% CdS/BiOCl was the highest and 10 times higher than pure BiOCl, which was attributed to the enhanced visible light absorption and the higher separation of photogenerated carriers. Besides, 6% CdS/BiOCl also showed good recycling performance. A new photocatalytic mechanism, totally different from other mechanisms of BiOCl-based heterostructures , was revealed. It was part of electrons on the conducting band of CdS rather than the transferred electrons on the conducting band of BiOCl that oxidized O 2 into O 2 − , and O 2 − together with h + on the valence band of CdS degraded organic pollutants. BiOCl did not generate electrons and holes, but only served as the electron transferer as electrons on the conducting band of CdS transferred to the conducting band of BiOCl, facilitating the separation of hole-electron pairs. This work provided a good reference for design and synthesis of film photocatalysts and new insights into photocatalytic mechanisms for heterostructures.

研究领域: 材料科学 · 环境科学 · 化学工程

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Enhanced photocatalytic activities of CdS-BiOCl/PAN composites towards photocatalytic hydrogen evolution

A facile two-step method to synthesize immobilized CdS/BiOCl film photocatalysts with enhanced photocatalytic activities