Hydrothermal Synthesis of Zn2SnO4/Few-Layer Boron Nitride Nanosheets Hybrids as a Visible-Light-Driven Photocatalyst
来源期刊：Journal Of Wuhan University Of Technology Materials Science Edition2019年第3期
论文作者：王一瑾 吴湘锋 ZHAO Zehua LI Hui ZHANG Chenxu SU Junzhang ZHANG Jiarui CAO Zuolin WANG Yiwei WANG Kaiyuan PAN Juncheng
文章页码：563 - 567
摘 要：Zn2SnO4/few-layer boron nitride nanosheets（FBNNS） hybrids were synthesized via a one-step hydrothermal method. The structures, morphology, optical properties, electron transformation and separation of the as-prepared products were characterized by X-ray diffraction, transmission electrical microscopy, UV-vis diffuse reflectance spectroscopy and electrochemical impedance spectroscopy, respectively. Rhodamine B was used to evaluate the photocatalytic activities of the as-prepared samples under visible light illumination. The photocatalytic mechanism was also explored. Experimental results showed that the degradation efficiency of rhodamine B was firstly increased and then decreased with increasing the usage amount of FBNNS. When it was 9 wt% based on the weight of Zn2 SnO4, the degradation efficiency of the as-prepared Zn2 SnO4/FBNNS-9 wt% composites reached to the maximum of 97.5 % in 180 min, which was higher than 39.2 % of pure Zn2 SnO4. Moreover, the holes played mainly active roles in photocatalytic reaction process. In addition, the as-prepared hybrids could enhance the separation efficiency of photoexcited carriers compared to pure Zn2 SnO4.
王一瑾，吴湘锋，ZHAO Zehua，LI Hui，ZHANG Chenxu，SU Junzhang，ZHANG Jiarui，CAO Zuolin，WANG Yiwei，WANG Kaiyuan，PAN Juncheng
摘 要：Zn2SnO4/few-layer boron nitride nanosheets（FBNNS） hybrids were synthesized via a one-step hydrothermal method. The structures, morphology, optical properties, electron transformation and separation of the as-prepared products were characterized by X-ray diffraction, transmission electrical microscopy, UV-vis diffuse reflectance spectroscopy and electrochemical impedance spectroscopy, respectively. Rhodamine B was used to evaluate the photocatalytic activities of the as-prepared samples under visible light illumination. The photocatalytic mechanism was also explored. Experimental results showed that the degradation efficiency of rhodamine B was firstly increased and then decreased with increasing the usage amount of FBNNS. When it was 9 wt% based on the weight of Zn2 SnO4, the degradation efficiency of the as-prepared Zn2 SnO4/FBNNS-9 wt% composites reached to the maximum of 97.5 % in 180 min, which was higher than 39.2 % of pure Zn2 SnO4. Moreover, the holes played mainly active roles in photocatalytic reaction process. In addition, the as-prepared hybrids could enhance the separation efficiency of photoexcited carriers compared to pure Zn2 SnO4.
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