In-situ growth of well-ordered ZnO nanowire-networks with interconnected junctions for enhanced SO2 gas sensing properties

被引：14

作者：

Cao, Lei ^{[1
,2
]}

Yu, Lingmin ^{[1
]}

Li, Senlin ^{[1
]}

Nan, Ning ^{[1
]}

Zhang, Chuantao ^{[1
]}

Fan, Xinhui ^{[1
]}

机构：

[1] Xian Technol Univ, Sch Mat & Chem Engn, Xian 710021, Shaanxi, Peoples R China

[2] Xian Technol Univ, Sch Sci, Xian 710021, Shaanxi, Peoples R China

来源：

APPLIED SURFACE SCIENCE | 2024年 / 646卷

基金：

中国国家自然科学基金;

关键词：

ZnO nanowire-networks; SO2; Interjunction; In-situ growth; Gas sensing; SO2 GAS SENSOR; THIN-FILMS; NANOROD ARRAYS; OXIDE; NO2; NANOPARTICLES; FABRICATION; MECHANISM;

D O I：

10.1016/j.apsusc.2023.158899

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

SO2 gas sensors based on ZnO nanostructures under wild conditions are used widely yet an insufficient electron transfer channels limit the enhancement of the gas-sensing performance. Herein, we report well-ordered ZnO nanowire-networks with interconnected junctions via a simple solution-processing method by adjustment of additive to produce remarkable SO2 gas-sensing performance: low detection limit of 200 ppb, fast response-recovery speed (102 and 58 s) and high response value (8.28) to 10 ppm SO2 at work temperature of 200 degrees C. The 3D net-work ZnO arrays with fully interconnected junctions, rich oxygen vacancies, and high conductivity are confirmed. Furthermore, the SO2 gas mechanism related to the interjunctions is also clarified. This research offers a novel strategy for designing high performance ppb-level SO2 gas sensor.

引用

页数：10

共 50 条

[1] Gas sensing properties of defect-controlled ZnO-nanowire gas sensor [J].

Ahn, M. -W. ;

Park, K. -S. ;

Heo, J. -H. ;

Park, J. -G. ;

Kim, D. -W. ;

Choi, K. J. ;

Lee, J. -H. ;

Hong, S. -H. .

APPLIED PHYSICS LETTERS, 2008, 93 (26)

[2] Origin of the optical phonon frequency shifts in ZnO quantum dots [J].

Alim, KA ;

Fonoberov, VA ;

Balandin, AA .

APPLIED PHYSICS LETTERS, 2005, 86 (05) :1-3

[3] Growth and characterization of undoped and aluminium doped zinc oxide thin films for SO2 gas sensing below threshold value limit [J].

Chaitra, U. ;

Ali, A. V. Muhammed ;

Viegas, Alison E. ;

Kekud, Dhananjaya ;

Rao, K. Mohan .

APPLIED SURFACE SCIENCE, 2019, 496

[4] Porous ZnO Polygonal Nanoflakes: Synthesis, Use in High-Sensitivity NO2 Gas Sensor, and Proposed Mechanism of Gas Sensing [J].

Chen, Mei ;

Wang, Zhihua ;

Han, Dongmei ;

Gu, Fubo ;

Guo, Guangsheng .

JOURNAL OF PHYSICAL CHEMISTRY C, 2011, 115 (26) :12763-12773

[5] Hierarchical Assembly of ZnO Nanostructures on SnO2 Backbone Nanowires: Low-Temperature Hydrothermal Preparation and Optical Properties [J].

Cheng, Chuanwei ;

Liu, Bo ;

Yang, Huiying ;

Zhou, Weiwei ;

Sun, Li ;

Chen, Rui ;

Yu, Siu Fung ;

Zhang, Jixuan ;

Gong, Hao ;

Sun, Handong ;

Fan, Hong Jin .

ACS NANO, 2009, 3 (10) :3069-3076

[6] A low temperature combination method for the production of ZnO nanowires [J].

Cross, RBM ;

De Souza, MM ;

Narayanan, EMS .

NANOTECHNOLOGY, 2005, 16 (10) :2188-2192

[7] Room temperature SO2and H2gas sensing using hydrothermally grown GO-ZnO nanorod composite films [J].

Dhingra, Vishal ;

Kumar, Shani ;

Kumar, Ravi ;

Garg, Amit ;

Chowdhuri, Arijit .

MATERIALS RESEARCH EXPRESS, 2020, 7 (06)

[8] Optical properties of ZnO nanostructures [J].

Djurisic, Aleksandra B. ;

Leung, Yu Hang .

SMALL, 2006, 2 (8-9) :944-961

[9] Structural, absorption and optical dispersion characteristics of rhodamine B thin films prepared by drop casting technique [J].

Farag, A. A. M. ;

Yahia, I. S. .

OPTICS COMMUNICATIONS, 2010, 283 (21) :4310-4317

[10] Contact-controlled sensing properties of flowerlike ZnO nanostructures [J].

Feng, P ;

Wan, Q ;

Wang, TH .

APPLIED PHYSICS LETTERS, 2005, 87 (21) :1-3

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