Synthesis of TiO2 decorated Co3O4 acicular nanowire arrays and their application as an ethanol sensor

CORC > 生态环境研究中心 > 中国科学院生态环境研究中心 > 环境化学与生态毒理学国家重点实验室

	Synthesis of TiO2 decorated Co3O4 acicular nanowire arrays and their application as an ethanol sensor
	Zhang, Liqiang; Gao, Zhenfei; Liu, Chao; Zhang, Yunhan; Tu, Zhiqiang; Yang, Xiaopeng; Yang, Fan; Wen, Zhen; Zhu, Liping; Liu, Rui
刊名	JOURNAL OF MATERIALS CHEMISTRY A
	2015
卷号	3 期号:6 页码:2794-2801
英文摘要	A novel heterostructure of TiO2 modified Co3O4 (TiO2/Co3O4) acicular nanowire (NW) arrays has been fabricated in this study, which demonstrates a good performance for ethanol detection at working temperatures as low as 160 degrees C. Co3O4 NW arrays were first grown on an Al2O3 substrate patterned with an Ag/Pd electrode by a hydrothermal method, and then TiO2 nanoparticles were decorated on the surface of Co3O4 NW arrays by using pulsed laser deposition (PLD). It is found that after decoration of TiO2, the TiO2/Co3O4 NW array sensor exhibits a much higher response to ethanol (R-g/R-a = 65, R-g is the sensor resistance measured in a mixture of target gases and Ra is the resistance measured in air) compared with the pristine Co3O4 NW sensor (R-g/R-a = 25). Importantly, the TiO2/Co3O4 sensor has shown a detection limit as low as 10 ppm, and a good reproducibility. The reason for the enhanced sensing properties of TiO2/Co3O4 is considered to be due to the formation of a p-n junction between the p-type Co3O4 and n-type TiO2.
研究领域[WOS]	Chemistry, Physical ; Energy & Fuels ; Materials Science, Multidisciplinary
WOS记录号	WOS:000348990500038
公开日期	2016-03-15
内容类型	期刊论文
源URL	[http://ir.rcees.ac.cn/handle/311016/32680]
专题	生态环境研究中心_环境化学与生态毒理学国家重点实验室
推荐引用方式 GB/T 7714	Zhang, Liqiang,Gao, Zhenfei,Liu, Chao,et al. Synthesis of TiO2 decorated Co3O4 acicular nanowire arrays and their application as an ethanol sensor[J]. JOURNAL OF MATERIALS CHEMISTRY A,2015,3(6):2794-2801.
APA	Zhang, Liqiang.,Gao, Zhenfei.,Liu, Chao.,Zhang, Yunhan.,Tu, Zhiqiang.,...&Cui, Lishan.(2015).Synthesis of TiO2 decorated Co3O4 acicular nanowire arrays and their application as an ethanol sensor.JOURNAL OF MATERIALS CHEMISTRY A,3(6),2794-2801.
MLA	Zhang, Liqiang,et al."Synthesis of TiO2 decorated Co3O4 acicular nanowire arrays and their application as an ethanol sensor".JOURNAL OF MATERIALS CHEMISTRY A 3.6(2015):2794-2801.