Ag Nanoparticle-Sensitized WO3 Hollow Nanosphere for Localized Surface Plasmon Enhanced Gas Sensors

doi:10.1021/acsami.6b04692

	Ag Nanoparticle-Sensitized WO3 Hollow Nanosphere for Localized Surface Plasmon Enhanced Gas Sensors
	Liu, Shengzhong Frank 2,3; Yao, Yao 1,2; Ji, Fangxu 2; Yin, Mingli 2; Ren, Xianpei 2; Ma, Qiang 2; Yang, Junqing 2
刊名	ACS APPLIED MATERIALS & INTERFACES
	2016-07-20
卷号	8 期号:28 页码:18165-18172
关键词	Ag-wo3 Hollow Nanosphere Sensor Plasmonic Alcohol
ISSN号	1944-8244
DOI	10.1021/acsami.6b04692
文献子类	Article
英文摘要	Ag nanoparticle (NP)-sensitized WO3 hollow nanospheres (Ag-WO3-HNSs) are fabricated via a simple sonochemical synthesis route. It is found that the Ag-WO3-HNS shows remarkable performance in gas sensors. Field-emission scanning electron microscope (FE-SEM) and transmission electron microscope (TEM) images reveal that the Agx-WO3 adopts the HNS structure in which WO3 forms the outer shell framework and the Ag NPs are grown on the inner wall of the WO3 hollow sphere. The size of the Ag NPs can be controlled by adjusting the addition amount of WC(l)6 during the reaction. The sensor Agx-WO3 exhibits extremely high sensitivity and selectivity toward alcohol vapor. In particular, the Ag(15nm)-WO3 sensor shows significantly lower operating temperature (230 degrees C), superior detection limits as low as 0.09 ppb, and faster response (7 s). Light illumination was found to boost the sensor performance effectively, especially at 405 and 900 nm, where the light wavelength resonates with the absorption of Ag NPs and the surface oxygen vacancies of WO3, respectively. The improved sensor performance is attributed to the localized surface plasmon resonance (LSPR) effect.
WOS关键词	POTENTIAL BARRIER MODULATION ; CORE-SHELL NANOPARTICLES ; SENSING PROPERTIES ; OPTICAL-PROPERTIES ; OXIDE NANOSTRUCTURES ; SILVER NANOPARTICLES ; ROOM-TEMPERATURE ; RESONANCE ; PERFORMANCE ; NANORODS
WOS研究方向	Science & Technology - Other Topics ; Materials Science
语种	英语
出版者	AMER CHEMICAL SOC
WOS记录号	WOS:000380298400046
内容类型	期刊论文
源URL	[http://cas-ir.dicp.ac.cn/handle/321008/169924]
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
通讯作者	Liu, Shengzhong Frank
作者单位	1.Ningxia Normal Univ, Coll Chem & Chem Engn, Guyuan 756000, Peoples R China 2.Shaanxi Normal Univ, Shaanxi Engn Lab Adv Energy Technol, Key Lab Appl Surface & Colloid Chem, Natl Minist Educ,Sch Mat Sci & Engn, Xian 710119, Peoples R China 3.Chinese Acad Sci, Dalian Natl Lab Clean Energy, Dalian Inst Chem Phys, Dalian 116023, Peoples R China
推荐引用方式 GB/T 7714	Liu, Shengzhong Frank,Yao, Yao,Ji, Fangxu,et al. Ag Nanoparticle-Sensitized WO3 Hollow Nanosphere for Localized Surface Plasmon Enhanced Gas Sensors[J]. ACS APPLIED MATERIALS & INTERFACES,2016,8(28):18165-18172.
APA	Liu, Shengzhong Frank.,Yao, Yao.,Ji, Fangxu.,Yin, Mingli.,Ren, Xianpei.,...&Yang, Junqing.(2016).Ag Nanoparticle-Sensitized WO3 Hollow Nanosphere for Localized Surface Plasmon Enhanced Gas Sensors.ACS APPLIED MATERIALS & INTERFACES,8(28),18165-18172.
MLA	Liu, Shengzhong Frank,et al."Ag Nanoparticle-Sensitized WO3 Hollow Nanosphere for Localized Surface Plasmon Enhanced Gas Sensors".ACS APPLIED MATERIALS & INTERFACES 8.28(2016):18165-18172.