Ar plasma treatment on ZnO-SnO2 heterojunction nanofibers and its enhancement mechanism of hydrogen gas sensing

被引：36

作者：

Hu, Kelin ^{[1
]}

Wang, Feipeng ^{[1
]}

Shen, Zijia ^{[1
]}

Liu, Hongcheng ^{[1
]}

Zeng, Wen ^{[2
]}

Wang, Yu ^{[3
]}

机构：

[1] Chongqing Univ, State Key Lab Power Transmiss Equipment & Syst Se, Chongqing 400044, Peoples R China

[2] Chongqing Univ, Coll Mat Sci & Engn, Chongqing 400030, Peoples R China

[3] Shanghai Urban Construct Vocat Coll, Shanghai 200438, Peoples R China

来源：

CERAMICS INTERNATIONAL | 2020年 / 46卷 / 13期

基金：

中国国家自然科学基金; 国家重点研发计划;

关键词：

Nanofibers; Heterojunction; Plasma treatment; Gas sensing; Electrospinning; COMPOSITE NANOFIBERS; SENSORS; NANOPARTICLES; PERFORMANCE; XPS;

D O I：

10.1016/j.ceramint.2020.05.242

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

In this study, ZnO-SnO2 heterojunction nanofibers were fabricated using electrospinning and treated by Ar plasma. The post treatment demonstrated the ability to regulate adsorbed oxygen of nanofibers and thus affecting the gas sensing performance. The results revealed that the gas sensing performances increased with the increase of plasma treatment time at first, then showed a downward trend. The setting for the best H-2 gas performance was 20 min of plasma treatment, under which the response of the sample was 80% higher and the response time was two thirds shorter than those of the untreated sample. The explanation can be that appropriate plasma treatment can increase the oxygen vacancy on the surface of heterojunction nanofibers as well as the resistance modulation range in the air; however, excessive plasma treatment can result in the reduction of the resistance modulation range in the air by reducing the metal oxide to metal.

引用

页码：21439 / 21447

页数：9

共 24 条

[1] XPS and optical studies of different morphologies of ZnO nanostructures prepared by microwave methods [J].

Al-Gaashani, R. ;

Radiman, S. ;

Daud, A. R. ;

Tabet, N. ;

Al-Douri, Y. .

CERAMICS INTERNATIONAL, 2013, 39 (03) :2283-2292

[2] Methanol, ethanol and hydrogen sensing using metal oxide and metal (TiO2-Pt) composite nanoclusters on GaN nanowires: a new route towards tailoring the selectivity of nanowire/nanocluster chemical sensors [J].

Aluri, Geetha S. ;

Motayed, Abhishek ;

Davydov, Albert V. ;

Oleshko, Vladimir P. ;

Bertness, Kris A. ;

Sanford, Norman A. ;

Mulpuri, Rao V. .

NANOTECHNOLOGY, 2012, 23 (17)

[3] Electrospun ZnO/TiO2 composite nanofibers as a bactericidal agent [J].

Hwang, Sun Hye ;

Song, Jooyoung ;

Jung, Yujung ;

Kweon, O. Young ;

Song, Hee ;

Jang, Jyongsik .

CHEMICAL COMMUNICATIONS, 2011, 47 (32) :9164-9166

[4] Gas sensing mechanisms of metal oxide semiconductors: a focus review [J].

Ji, Haocheng ;

Zeng, Wen ;

Li, Yanqiong .

NANOSCALE, 2019, 11 (47) :22664-22684

[5] Bifunctional Sensing Mechanism of SnO2-ZnO Composite Nanofibers for Drastically Enhancing the Sensing Behavior in H2 Gas [J].

Katoch, Akash ;

Kim, Jae-Hun ;

Kwon, Yong Jung ;

Kim, Hyoun Woo ;

Kim, Sang Sub .

ACS APPLIED MATERIALS & INTERFACES, 2015, 7 (21) :11351-11358

[6] Low-temperature prototype hydrogen sensors using Pd-decorated SnO2 nanowires for exhaled breath applications [J].

Kien Nguyen ;

Chu Manh Hung ;

Trinh Minh Ngoc ;

Dang Thi Thanh Le ;

Duc Hoa Nguyen ;

Duy Nguyen Van ;

Hieu Nguyen Van .

SENSORS AND ACTUATORS B-CHEMICAL, 2017, 253 :156-163

[7] The Role of NiO Doping in Reducing the Impact of Humidity on the Performance of SnO2-Based Gas Sensors: Synthesis Strategies, and Phenomenological and Spectroscopic Studies [J].

Kim, Hae-Ryong ;

Haensch, Alexander ;

Kim, Il-Doo ;

Barsan, Nicolae ;

Weimar, Udo ;

Lee, Jong-Heun .

ADVANCED FUNCTIONAL MATERIALS, 2011, 21 (23) :4456-4463

[8] Highly selective and sensitive xylene sensors using Cr2O3-ZnCr2O4 hetero-nanostructures prepared by galvanic replacement [J].

Kim, Jae-Hyeok ;

Jeong, Hyun-Mook ;

Na, Chan Woong ;

Yoon, Ji-Won ;

Abdel-Hady, Faissal ;

Wazzan, A. A. ;

Lee, Jong-Heun .

SENSORS AND ACTUATORS B-CHEMICAL, 2016, 235 :498-506

[9] XPS study of the surface chemistry of L-CVD SnO2 thin films after oxidation [J].

Kwoka, M ;

Ottaviano, L ;

Passacantando, M ;

Santucci, S ;

Czempik, G ;

Szuber, J .

THIN SOLID FILMS, 2005, 490 (01) :36-42

[10] Effective Ammonia Detection Using n-ZnO/p-NiO Heterostructured Nanofibers [J].

Lokesh, Krishnakumar ;

Kavitha, Gnanasekaran ;

Manikandan, Elayaperumal ;

Mani, Ganesh Kumar ;

Kaviyarasu, Kasinathan ;

Rayappan, John Bosco Balaguru ;

Ladchumananandasivam, Rasiah ;

Aanand, Jagathrakshakan Sundeep ;

Jayachandran, Mayandi ;

Maaza, Malik .

IEEE SENSORS JOURNAL, 2016, 16 (08) :2477-2483

← 1 2 3 →