Optimization of metal nanoparticle amount on SnO2 nanowires to achieve superior gas sensing properties

被引：24

作者：

Ul Abideen, Zain ^{[1
]}

Kim, Jae-Hun ^{[1
]}

Kim, Sang Sub ^{[1
]}

机构：

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

来源：

SENSORS AND ACTUATORS B-CHEMICAL | 2017年 / 238卷

关键词：

Gas sensing; Functionalization; Nanowire; SnO2; Ag; Sensitization; GOLD NANOPARTICLES; SENSORS; PERFORMANCE; SURFACE; ENHANCEMENT; PARTICLES; ADDITIVES; BENZENE; H2S;

D O I：

10.1016/j.snb.2016.07.054

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

SnO2 nanowires (NWs) functionalized with Ag nanoparticles (NPs) were tested for NO2 gas sensing ability; the results revealed a bell-shaped curve as a function of the surface coverage of Ag NPs. A model that can explain these experimental observations regarding the functionalization of metal NPs on oxide NWs, which is the most widely used approach for improving the sensing capabilities of NWs, was proposed and validated. Based on the electronic and chemical sensitizations of metal NPs, a mathematical equation was formulated to predict the optimal surface coverage of metal NPs on the NWs to obtain maximum sensing performance. This study may provide new insight and guidelines for the development of highly sensitive NW-based gas sensors. (C) 2016 Elsevier B.V. All rights reserved.

引用

页码：374 / 380

页数：7

共 38 条

[1] Interaction between the surface of the silver nanoparticles prepared by γ-irradiation and organic molecules containing thiol group [J].

Choi, SH ;

Lee, SH ;

Hwang, YM ;

Lee, KP ;

Kang, HD .

RADIATION PHYSICS AND CHEMISTRY, 2003, 67 (3-4) :517-521

[2] Bimetallic Pd/Pt nanoparticle-functionalized SnO2 nanowires for fast response and recovery to NO2 [J].

Choi, Sun-Woo ;

Katoch, Akash ;

Sun, Gun-Joo ;

Kim, Sang Sub .

SENSORS AND ACTUATORS B-CHEMICAL, 2013, 181 :446-453

[3] NO2-sensing performance of SnO2 microrods by functionalization of Ag nanoparticles [J].

Choi, Sun-Woo ;

Katoch, Akash ;

Sun, Gun-Joo ;

Wu, Ping ;

Kim, Sang Sub .

JOURNAL OF MATERIALS CHEMISTRY C, 2013, 1 (16) :2834-2841

[4] Room temperature CO sensing of selectively grown networked ZnO nanowires by Pd nanodot functionalization [J].

Choi, Sun-Woo ;

Kim, Sang Sub .

SENSORS AND ACTUATORS B-CHEMICAL, 2012, 168 :8-13

[5] Functionalization of selectively grown networked SnO2 nanowires with Pd nanodots by γ-ray radiolysis [J].

Choi, Sun-Woo ;

Jung, Sung-Hyun ;

Kim, Sang Sub .

NANOTECHNOLOGY, 2011, 22 (22)

[6] Synthesis of ZnO-Ag Hybrids and Their Gas-Sensing Performance toward Ethanol [J].

Ding, Jing ;

Zhu, Junwu ;

Yao, Pengcheng ;

Li, Jin ;

Bi, Huiping ;

Wang, Xin .

INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH, 2015, 54 (36) :8947-8953

[7] Nonaqueous synthesis of Ag-functionalized In2O3/ZnO nanocomposites for highly sensitive formaldehyde sensor [J].

Dong, Chenjun ;

Liu, Xu ;

Han, Bingqian ;

Deng, Shaojuan ;

Xiao, Xuechun ;

Wang, Yude .

SENSORS AND ACTUATORS B-CHEMICAL, 2016, 224 :193-200

[8] SCHOTTKY BARRIERS - AN EFFECTIVE WORK FUNCTION MODEL [J].

FREEOUF, JL ;

WOODALL, JM .

APPLIED PHYSICS LETTERS, 1981, 39 (09) :727-729

[9] ELECTRON EXCHANGE IN TIO2-SUPPORTED SILVER CATALYSTS .1. EFFECT OF THE REDUCING PRETREATMENTS [J].

GONZALEZELIPE, AR ;

SORIA, J ;

MUNUERA, G .

JOURNAL OF CATALYSIS, 1982, 76 (02) :254-264

[10] Facile Control of C2H5OH Sensing Characteristics by Decorating Discrete Ag Nanoclusters on SnO2 Nanowire Networks [J].

Hwang, In-Sung ;

Choi, Joong-Ki ;

Woo, Hyung-Sik ;

Kim, Sun-Jung ;

Jung, Se-Yeon ;

Seong, Tae-Yeon ;

Kim, Il-Doo ;

Lee, Jong-Heun .

ACS APPLIED MATERIALS & INTERFACES, 2011, 3 (08) :3140-3145

← 1 2 3 4 →