Synthesis of 3D flower-like ZnSnO3 and improvement of ethanol-sensing properties at room temperature based on nano-TiO2 decoration and UV radiation
Synthesis of 3D flower-like ZnSnO3 and improvement of ethanol-sensing properties at room temperature based on nano-TiO2 decoration and UV radiation
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DOI：
10.1016/j.snb.2018.02.178
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发表时间：
2018-07
期刊：
影响因子：
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通讯作者：
Xiuyu Wang;Bonan Ding;Yanpeng Liu;Xuantong Zhu;Heng Li;Mengzhen Xia;Huifen Fu;Mingxiu Li
中科院分区：
文献类型：
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作者：
Xiuyu Wang;Bonan Ding;Yanpeng Liu;Xuantong Zhu;Heng Li;Mengzhen Xia;Huifen Fu;Mingxiu Li
以相同形貌的ZnSn（OH）6前驱体为原料，制备了三维花状ZnSnO 3样品。该传感器在室温下对乙醇有响应，纳米TiO 2修饰可显著提高该传感器的乙醇敏感性能。紫外-可见吸收光谱表明，具有三维花状结构的ZnSnO 3和经TiO 2修饰的ZnSnO 3均表现出较好的紫外吸收性能，在紫外区有较强的宽吸收峰，其能隙（约3.19 eV）比本研究中所用紫外光的光子能量（3.40 eV）要窄.讨论了三维花状结构形成的可能原因以及室温下乙醇传感性能的改善。
Three-dimensional (3D) flower-like ZnSnO3samples were prepared based on ZnSn(OH)6precursors with the same morphology. The sensor with the ZnSnO3sensitive material under UV radiation shows an ethanol response at room temperature (RT), and the ethanol-sensing properties can be greatly improved by nano-TiO2decoration at the same conditions. UV–vis absorption spectra show that both pristine ZnSnO3with 3D flower-like structure and TiO2-decorated counterpart exhibit a good UV absorption performance according to the strong and wide adsorption peak in the UV region, and that both energy gaps are narrower (about 3.19 eV) than that of the photon energy of the UV light (3.40 eV) used in this study. Possible reasons for the formation of the 3D flower-like structure and improvement of ethanol-sensing properties at RT were discussed.