Fabrication and NO2 gas-sensing properties of reduced graphene oxide/WO3 nanocomposite films.
Fabrication and NO2 gas-sensing properties of reduced graphene oxide/WO3 nanocomposite films.
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DOI：
10.1016/j.talanta.2014.09.034
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发表时间：
2015-01
期刊：
影响因子：
6.1
通讯作者：
P. Su;S. Peng
中科院分区：
文献类型：
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作者：
P. Su;S. Peng
将多元醇一锅法与金属有机物分解（MOD）法相结合，制备了基于氧化钨/还原氧化石墨烯（RGO/WO 3）纳米复合薄膜的室温NO2气体传感器。利用傅里叶变换红外光谱仪（FTIR）、X射线衍射仪（XRD）、扫描电子显微镜（SEM）和原子力显微镜（AFM）对薄膜的微观结构和形貌进行了分析。在室温下详细测量了添加不同量RGO的WO 3的电学和NO2气敏性能随NO2气体浓度的变化，以阐明RGO对NO2气敏容量的贡献。通过对RGO/WO 3纳米复合薄膜的成分和微观结构的分析，解释了其气敏机理。基于RGO/WO 3纳米复合薄膜的传感器在室温下对低浓度NO2气体具有较强的响应，具有良好的线性度和良好的长期稳定性。
One-pot polyol process was combined with the metal organic decomposition (MOD) method to fabricate a room-temperature NO2gas sensor based on tungsten oxide and reduced graphene oxide (RGO/WO3) nanocomposite films. Fourier Transform infrared spectrometer (FTIR), X-ray diffractometry (XRD), scanning electron microscopy (SEM) and atomic force microscopy (AFM) were used to analyze the microstructure and morphology of the fabricated films. The electrical and NO2gas-sensing properties of WO3to which various amounts of RGO were added were measured in detail as a function of concentration of NO2gas at room temperature, to elucidate the contribution of RGO to the NO2gas-sensing capacity. The NO2gas-sensing mechanism of the RGO/WO3nanocomposite films were explained by considering their composition and microstructures. The sensor that was based on a nanocomposite film of RGO/WO3exhibited a strong response to low concentrations of NO2gas at room temperature, satisfactory linearity and favorable long-term stability.