Preparation of ZnO hollow spheres with different surface roughness and their enhanced gas sensing property

	Preparation of ZnO hollow spheres with different surface roughness and their enhanced gas sensing property
	Yin, Mingli 1,2,3; Liu, Shengzhong 1,2,4
刊名	sensors and actuators b-chemical
	2014-07-01
卷号	197 页码:58-65
关键词	ZnO Hollow sphere Gas sensor Alcohol
英文摘要	zno hollow spherical samples with different surface roughness have been synthesized using a one-step, template-free hydrothermal method. materials characterization has included xrd, sem, tem, xps and xrf. it was found that the surface roughness of the zno hollow spheres can be tuned from rough to smooth via regulating trisodium citrate concentration during the synthesis. when 2 mm of trisodium citrate was used, zno hollow spheres showed the roughest surface morphology. with increasing the citrate concentration from 2 to 6 mm, the resultant zno hollow sphere morphology became increasingly denser and smoother. when the citrate concentration was further increased to 8 mm, however, the morphology became rough again. sensors fabricated using the zno hollow spheres were characterized by the response to alcohol vapor. the roughest sample gave the best sensor response toward 10-500 ppm alcohol vapor, about 11-16 times higher than the reference one prepared without citrate. this corresponds to a remarkable sensor response as high as 402 and an extrapolated detection limit 0.5 ppm. the reasons behind the improvements in sensor performance are discussed. (c) 2014 elsevier b.v. all rights reserved.
WOS标题词	science & technology ; physical sciences ; technology
类目[WOS]	chemistry, analytical ; electrochemistry ; instruments & instrumentation
研究领域[WOS]	chemistry ; electrochemistry ; instruments & instrumentation
关键词[WOS]	template-free synthesis ; hydrothermal synthesis ; solvothermal method ; thin-films ; microspheres ; nanostructures ; fabrication ; sensor ; nanoparticles ; photoluminescence
收录类别	SCI
语种	英语
WOS记录号	WOS:000334753200008
公开日期	2015-11-17
内容类型	期刊论文
源URL	[http://159.226.238.44/handle/321008/143192]
专题	大连化学物理研究所_中国科学院大连化学物理研究所
作者单位	1.Chinese Natl Minist Educ, Key Lab Appl Surface & Colloid Chem, Xian 710062, Peoples R China 2.Shaanxi Normal Univ, Sch Mat Sci & Engn, Xian 710062, Peoples R China 3.Xian Technol Univ, Sch Sci, Xian 710032, Peoples R China 4.Chinese Acad Sci, Dalian Inst Chem Phys, Natl Lab Clean Energy, Dalian 116023, Peoples R China
推荐引用方式 GB/T 7714	Yin, Mingli,Liu, Shengzhong. Preparation of ZnO hollow spheres with different surface roughness and their enhanced gas sensing property[J]. sensors and actuators b-chemical,2014,197:58-65.
APA	Yin, Mingli,&Liu, Shengzhong.(2014).Preparation of ZnO hollow spheres with different surface roughness and their enhanced gas sensing property.sensors and actuators b-chemical,197,58-65.
MLA	Yin, Mingli,et al."Preparation of ZnO hollow spheres with different surface roughness and their enhanced gas sensing property".sensors and actuators b-chemical 197(2014):58-65.