MoO3 nanoflakes coupled reduced graphene oxide with enhanced ethanol sensing performance and mechanism

doi:10.1016/j.snb.2019.126730

	MoO3 nanoflakes coupled reduced graphene oxide with enhanced ethanol sensing performance and mechanism
	Tang, Zhilei; Deng, Xiaochuan; Zhang, Yi; Guo, Xiaodi; Yang, Jiaqi; Zhu, Chaoliang; Fan, Jie; Shi, Yifei; Qing, Bingju; Fan, Faying
	2019-10-15
发表期刊	SENSORS AND ACTUATORS B-CHEMICAL
卷号	297 页码:126730
摘要	In this paper, MoO3 nanoflakes coupled reduced graphene oxide (MoO3-rGO) composites were fabricated by annealing the MoS2-GO nanosheet, and the MoO3-rGO shows high sensitivity, fast response, and good selectivity to ethanol. The response towards 100, 200, 500, and 8000 ppm of ethanol is 53, 68.98, 117.0, and 702, respectively, which are 5.4, 4.83, 5.05, and 3.64 times higher than the MoO3 at the working temperature of 310 (sic)C. Besides, the response time of MoO3-rGO to 100 ppm of ethanol at 280, 310, and 350 (sic)C is 7 s, 6 s, and 4 s, respectively. In addition, the MoO3-rGO shows good selectivity to ethanol over n-propanol, methanol, isopropanol, xylene, acetone, and benzene. ESR and XPS spectra of samples before and after exposed in ethanol have been used to detect the vacancy oxygen and chemical state of the MoO3 in the responding process, and the possible sensing mechanism of the MoO3 to ethanol has also been discussed. Both the adsorbed oxygen and lattice oxygen participate in the reaction process, and the adsorbed ethanol molecules is catalytically oxidized into H2O and CO2 molecules, and in this process the resistance has changed. And the results indicate that the Mo5+ also plays an important role in the sensing process.
DOI	10.1016/j.snb.2019.126730
引用统计
文献类型	期刊论文
条目标识符	http://ir.isl.ac.cn/handle/363002/34072
专题	盐湖资源综合利用工程技术中心中国科学院青海盐湖研究所
推荐引用方式 GB/T 7714	Tang, Zhilei,Deng, Xiaochuan,Zhang, Yi,et al. MoO3 nanoflakes coupled reduced graphene oxide with enhanced ethanol sensing performance and mechanism[J]. SENSORS AND ACTUATORS B-CHEMICAL,2019,297:126730.
APA	Tang, Zhilei.,Deng, Xiaochuan.,Zhang, Yi.,Guo, Xiaodi.,Yang, Jiaqi.,...&Fan, Faying.(2019).MoO3 nanoflakes coupled reduced graphene oxide with enhanced ethanol sensing performance and mechanism.SENSORS AND ACTUATORS B-CHEMICAL,297,126730.
MLA	Tang, Zhilei,et al."MoO3 nanoflakes coupled reduced graphene oxide with enhanced ethanol sensing performance and mechanism".SENSORS AND ACTUATORS B-CHEMICAL 297(2019):126730.

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