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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