Highly Selective Sensing of CO, C6H6, and C7H8 Gases by Catalytic Functionalization with Metal Nanoparticles

被引：86

作者：

Kim, Jae-Hun ^{[1
]}

Wu, Ping ^{[2
]}

Kim, Hyoun Woo ^{[3
]}

Kim, Sang Sub ^{[1
]}

机构：

[1] Inha Univ, Dept Mat Sci & Engn, Inchon 402751, South Korea

[2] Singapore Univ Technol & Design, Entrop Interface Grp, Singapore 487372, Singapore

[3] Hanyang Univ, Div Engn & Mat Sci, Seoul 133791, South Korea

来源：

ACS APPLIED MATERIALS & INTERFACES | 2016年 / 8卷 / 11期

关键词：

selective sensing gas; metal functionalization; catalyst; d-band; theory; SNO2; NANOWIRES; SIGNIFICANT ENHANCEMENT; SURFACE-CHEMISTRY; CARBON-MONOXIDE; ZNO NANOWIRES; LUNG-CANCER; BENZENE; TOLUENE; ADSORPTION; SENSORS;

D O I：

10.1021/acsami.6b01116

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

We have fabricated multiple networked SnO2 nanowires and subsequently decorated-them with uniformly distributed metal nanoparticles (NPs). The sensing tests indicated that the Pt-, Pd-, and Au-decorated SnO2 nanowires exhibited excellent sensing behavior, specifically for C7H8, C6H6, and CO gases, respectively. We discussed the associated sensing mechanisms in regard to the selective catalytic effects of metal NPs. In addition, by means of d-band theory, we explained the catalytic capabilities of each metal and proposed design principles for exploring new catalytic metals. The present study will pave the way for further development of high-selectivity sensors.

引用

页码：7173 / 7183

页数：11

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