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

被引：13

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.

引用

页数：9

共 53 条

[1] Role of Oxygen Vacancies in Nanostructured Metal-Oxide Gas Sensors: A Review
Al-Hashem, Mohamad
Akbar, Sheikh
Morris, Patricia
[J]. SENSORS AND ACTUATORS B-CHEMICAL, 2019, 301
[2] Enhanced H2S sensing characteristics of Au modified Fe2O3 thin films
Balouria, Vishal
Ramgir, Niranjan S.
Singh, A.
Debnath, A. K.
Mahajan, Aman
Bedi, R. K.
Aswal, D. K.
Gupta, S. K.
[J]. 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
Bonu, Venkataramana
Das, A.
Prasad, Arun K.
Krishna, Nanda Gopala
Dhara, Sandip
Tyagi, A. K.
[J]. 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
Boonpai, Sirawat
Wannakao, Sippakorn
Panpranot, Joongjai
Jongsomjit, Bunjerd
Praserthdam, Piyasan
[J]. 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
Bouchikhi, Benachir
Chludzinski, Tomasz
Saidi, Tarik
Smulko, Janusz
El Bari, Nezha
Wen, He
Ionescu, Radu
[J]. 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
Chen, Jing
Park, Bosoon
[J]. ANALYTICAL AND BIOANALYTICAL CHEMISTRY, 2018, 410 (22) : 5455 - 5464
[8] THE REACTIVITY OF MOS2 SINGLE-CRYSTAL EDGE PLANES
CHIANELLI, RR
RUPPERT, AF
BEHAL, SK
KEAR, BH
WOLD, A
KERSHAW, R
[J]. JOURNAL OF CATALYSIS, 1985, 92 (01) : 56 - 63
[9] Application of electronic nose for industrial odors and gaseous emissions measurement and monitoring - An overview
Deshmukh, Sharvari
Bandyopadhyay, Rajib
Bhattacharyya, Nabarun
Pandey, R. A.
Jana, Arun
[J]. 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
Ding, Jing
Zhang, Lu
Liu, Qianqian
Dai, Wei-Lin
Guan, Guofeng
[J]. APPLIED CATALYSIS B-ENVIRONMENTAL, 2017, 203 : 335 - 342

← 1 2 3 4 5 6 →