Active edge effect of pothole-rich WO3 nanosheets for enhancing dimethyl trisulfide gas sensing performance

被引：14
作者：
Hu, Xiafen [1 ]
Li, Xiang [1 ]
Yang, Huimin [1 ]
Liu, Songhua [2 ]
Qin, Ziyu [3 ]
Xie, Changsheng [1 ]
Zeng, Dawen [1 ]
机构：
[1] Huazhong Univ Sci & Technol, Sch Mat Sci & Engn, State Key Lab Mat Proc & Die & Mould Technol, Wuhan 430074, Peoples R China
[2] Hubei Sanjiang Aerosp Jianghe Chem Technol Co LTD, Yichang 443000, Peoples R China
[3] Hainan Univ, Hainan Prov Fine Chem Engn Res Ctr, Haikou 570228, Hainan, Peoples R China
来源：
SENSORS AND ACTUATORS B-CHEMICAL | 2022年 / 352卷
基金：
中国国家自然科学基金;
关键词：
WO3; nanosheets; Pothole-rich; Dimethyl trisulfide; Active edge sites; Chemical adsorption; THIN-FILMS; MOS2; SURFACE; H2S; SITES; NH3; H-2;
D O I：
10.1016/j.snb.2021.131103
中图分类号：
O65 [分析化学];
学科分类号：
070302 ; 081704 ;
摘要：
The gas sensing mechanism of metal oxides has always been the research focus in the field of gas sensors. Herein, a novel gas sensing mechanism based on the active edge effect was proposed to account for the difference in gas sensing performance between pothole-rich WO3 and non-porous WO3 nanosheets. The gas sensor based on pothole-rich WO3 exhibited a higher response (9.5) than non-porous WO3 (6.8) when exposed to 500 ppb C2H6S3, which could be ascribed to the active edge sites on the pothole-rich WO3 nanosheets. DFT calculations and XPS confirmed that the edge sites showed higher adsorption energy and more charge transfer for C(2)H(6)S(3)gas, and W-S bond was formed at the edge site due to the strong chemical adsorption.
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页数：9
相关论文
共 53 条
[1]   Role of Oxygen Vacancies in Nanostructured Metal-Oxide Gas Sensors: A Review [J].
Al-Hashem, Mohamad ;
Akbar, Sheikh ;
Morris, Patricia .
SENSORS AND ACTUATORS B-CHEMICAL, 2019, 301
[2]   Enhanced H2S sensing characteristics of Au modified Fe2O3 thin films [J].
Balouria, Vishal ;
Ramgir, Niranjan S. ;
Singh, A. ;
Debnath, A. K. ;
Mahajan, Aman ;
Bedi, R. K. ;
Aswal, D. K. ;
Gupta, S. K. .
SENSORS AND ACTUATORS B-CHEMICAL, 2015, 219 :125-132
[3]   Influence of in-plane and bridging oxygen vacancies of SnO2 nanostructures on CH4 sensing at low operating temperatures [J].
Bonu, Venkataramana ;
Das, A. ;
Prasad, Arun K. ;
Krishna, Nanda Gopala ;
Dhara, Sandip ;
Tyagi, A. K. .
APPLIED PHYSICS LETTERS, 2014, 105 (24)
[4]   Active Site Formation in WOx Supported on Spherical Silica Catalysts for Lewis Acid Transformation to Bronsted Acid Activity [J].
Boonpai, Sirawat ;
Wannakao, Sippakorn ;
Panpranot, Joongjai ;
Jongsomjit, Bunjerd ;
Praserthdam, Piyasan .
JOURNAL OF PHYSICAL CHEMISTRY C, 2020, 124 (29) :15935-15943
[5]   Formaldehyde detection with chemical gas sensors based on WO3 nanowires decorated with metal nanoparticles under dark conditions and UV light irradiation [J].
Bouchikhi, Benachir ;
Chludzinski, Tomasz ;
Saidi, Tarik ;
Smulko, Janusz ;
El Bari, Nezha ;
Wen, He ;
Ionescu, Radu .
SENSORS AND ACTUATORS B-CHEMICAL, 2020, 320
[6]  
Broza YY, 2013, NANOMEDICINE-UK, V8, P785, DOI [10.2217/nnm.13.64, 10.2217/NNM.13.64]
[7]   Label-free screening of foodborne Salmonella using surface plasmon resonance imaging [J].
Chen, Jing ;
Park, Bosoon .
ANALYTICAL AND BIOANALYTICAL CHEMISTRY, 2018, 410 (22) :5455-5464
[8]   THE REACTIVITY OF MOS2 SINGLE-CRYSTAL EDGE PLANES [J].
CHIANELLI, RR ;
RUPPERT, AF ;
BEHAL, SK ;
KEAR, BH ;
WOLD, A ;
KERSHAW, R .
JOURNAL OF CATALYSIS, 1985, 92 (01) :56-63
[9]   Application of electronic nose for industrial odors and gaseous emissions measurement and monitoring - An overview [J].
Deshmukh, Sharvari ;
Bandyopadhyay, Rajib ;
Bhattacharyya, Nabarun ;
Pandey, R. A. ;
Jana, Arun .
TALANTA, 2015, 144 :329-340
[10]   Synergistic effects of electronic structure of WO3 nanorods with the dominant {001} exposed facets combined with silver size-dependent on the visible-light photocatalytic activity [J].
Ding, Jing ;
Zhang, Lu ;
Liu, Qianqian ;
Dai, Wei-Lin ;
Guan, Guofeng .
APPLIED CATALYSIS B-ENVIRONMENTAL, 2017, 203 :335-342
123456