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中文摘要：
利用四异丙醇钛和氧化石墨（GO），采用水热法制备了还原氧化石墨烯／氧化钛（rGO-TiO2）纳米复合敏感材料，通过傅里叶红外（FTIR）和紫外可见光谱（UV—vis）对复合材料结构进行了表征．气敏特性结果表明，复合敏感材料对氨气（NH，）具有良好的室温响应-恢复特性；与单一的rGO相比，复合敏感材料表现出更高的响应（rGO—TiO2对10×10-NH，响应为-0．027，rGO为-0．007）和更好的重复性．此外，还分析了复合材料对NH3的气体敏感机理．
英文摘要：
The reduced graphene oxide （rGO）-TiO2 composite sensitive materials were fabricated through hydrothermal method by using titanium isopropoxide and GO. The structure of composite was characterized by UV-Vis spectroscopy and the Fourier transform infrared spectroscopy （FTIR）. The response results showed rGO-TiO2 composite sensor performed better response values （ -0. 027） and repeatability to 10 ppm NH3 than that of rGO sensor （-0.007） at room temperature. Moreover, the sensing mechanism of composite sensor was studied.
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