Preparation of Ag nanoparticles-SnO2 nanoparticles-reduced graphene oxide hybrids and their application for detection of NO2 at room temperature
Preparation of Ag nanoparticles-SnO2 nanoparticles-reduced graphene oxide hybrids and their application for detection of NO2 at room temperature
复制标题
Ag纳米粒子-SnO2纳米粒子-还原氧化石墨烯杂化物的制备及其在室温NO2检测中的应用
DOI：
10.1016/j.snb.2015.09.027
复制
发表时间：
2016
影响因子：
8.4
通讯作者：
Tong Zhang
中科院分区：
文献类型：
--
作者：
Ziying Wang;Yong Zhang;Sen Liu;Tong Zhang
使用Ag纳米颗粒-SnO2纳米颗粒-还原氧化石墨烯(AgNPs-SnO2-rGO)混合物作为传感材料构建了一种新型NO2气体传感器。 AgNPs-SnO2-rGO 杂化物是通过两步湿化学法制备的。首先，在 SnCl4 存在下通过水热处理 GO 水分散体合成了 SnO2-rGO 杂化物。然后通过在SnO2-rGO杂化物表面原位还原AgNO3得到AgNPs-SnO2-rGO杂化物。利用紫外可见光谱、X射线衍射(XRD)、能量色散X射线光谱仪(EDX)、元素图、X射线光电子能谱(XPS)、透射电子显微镜(TEM)和拉曼光谱的综合表征来研究AgNPs-SnO2-rGO杂化物的结构。最重要的是，基于 AgNPs-SnO2-rGO 混合物的传感器在室温下运行的 NO2 传感中表现出良好的传感性能。例如，基于AgNPs-SnO2-rGO杂化物的传感器对于5 ppm NO2的响应时间和恢复时间分别为49秒和339秒，比SnO2-rGO杂化物的响应时间和恢复时间（415秒和740秒）短得多，这表明通过将AgNPs引入SnO2-rGO杂化物中，室温下NO2传感的传感性能得到了极大的增强。
A novel NO2gas sensor has been constructed using Ag nanoparticles-SnO2nanoparticles-reduced graphene oxide (AgNPs-SnO2-rGO) hybrids as sensing materials. AgNPs-SnO2-rGO hybrids were prepared by a two-step wet-chemical method. Firstly, SnO2-rGO hybrids were synthesized by hydrothermal treatment of aqueous dispersion of GO in the presence of SnCl4. Then, AgNPs-SnO2-rGO hybrids were obtained by in situ reduction of AgNO3on the surface of SnO2-rGO hybrids. The combined characterizations of UV–vis spectroscopy, X-ray diffraction (XRD), energy-dispersive X-ray spectrometer (EDX), elemental mapping, X-ray photoelectron spectroscopy (XPS), transmission electron microscopy (TEM) and Raman spectra were used to investigate the structure of AgNPs-SnO2-rGO hybrids. Most importantly, the sensor based on AgNPs-SnO2-rGO hybrids exhibits good sensing performance for NO2sensing operating at room temperature. For example, the response time and recovery time of the sensor based on AgNPs-SnO2-rGO hybrids for 5 ppm NO2are 49 s and 339 s, which are much shorter than that of SnO2-rGO hybrids (415 s and 740 s), indicating that the sensing performances for NO2sensing at room temperature have been tremendously enhanced by introduction of AgNPs into SnO2-rGO hybrids.
登录
查看更多内容
影响因子：
9.5
作者：
Wei Yang;Peng Wan;Xiaodong Zhou;Jiming Hu;Y. Guan;Liang Feng
通讯作者：
Wei Yang;Peng Wan;Xiaodong Zhou;Jiming Hu;Y. Guan;Liang Feng
影响因子：
--
作者：
Park, Seung-Keun;Yu, Seung-Ho;Piao, Yuanzhe
通讯作者：
Piao, Yuanzhe
影响因子：
6.4
作者：
Choi, Sun-Woo;Katoch, Akash;Kim, Sang Sub
通讯作者：
Kim, Sang Sub
影响因子：
29.4
作者：
Lu, Ganhua;Ocola, Leonidas E.;Chen, Junhong
通讯作者：
Chen, Junhong
影响因子：
2.8
作者：
Yunchen Du;Sen Liu;Yanyan Ji;Yong‐Lai Zhang;Shu Wei;Fujian Liu;F. Xiao
通讯作者：
Yunchen Du;Sen Liu;Yanyan Ji;Yong‐Lai Zhang;Shu Wei;Fujian Liu;F. Xiao