High Sensitivity NO2 Gas Sensor Based on 3D WO3 Microflowers Assembled by Numerous Nanoplates

被引：6

作者：

Cao, Pei-Jiang ^{[1
]}

Li, Meng ^{[2
]}

Rao, Ch. N. ^{[2
]}

Han, Shun ^{[2
]}

Xu, Wang-Ying ^{[1
]}

Fang, Ming ^{[1
,2
]}

Liu, Xin-Ke

Zeng, Yu-Xiang ^{[1
]}

Liu, Wen-Jun ^{[1
]}

Zhu, De-Liang ^{[1
]}

Lu, You-Ming ^{[1
]}

机构：

[1] Shenzhen Univ, Guangdong Res Ctr Interfacial Engn Funct Mat, Shenzhen Engn Lab Adv Technol Ceram, Shenzhen Key Lab Special Funct Mat, Shenzhen 518055, Peoples R China

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

来源：

JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY | 2020年 / 20卷 / 03期

基金：

中国国家自然科学基金;

关键词：

Tungsten Oxide; Microflowers; Hydrothermal Process; NO2; SENSING PROPERTIES; SOLVOTHERMAL SYNTHESIS; FACILE SYNTHESIS; ZNO; ACETONE; NANOSHEETS; MICROSPHERES; SNO2;

D O I：

10.1166/jnn.2020.17175

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Tungsten oxide microflowers (WO3 MFs) were fabricated by a simple hydrothermal process through adjusting the pH of the solution by HCl. These MFs possess the outer diameters of about 2 mu m and are composed of numerous nanoplates with the average pore size of 10.9 nm. Chemiresistive activity of as-fabricated WO3 MFs sensor was attempted towards oxidizing and reducing target gases, revealing a superior selectivity to NO2 with a maximum response of 22.95 (2 ppm NO2) @ 105 degrees C compared to other target gases. One of the key features of as-fabricated WO3 MFs sensor is the lower detection limit of 125 ppb and operating temperature of 105 degrees C to NO2 with better reproducibility, signifying commercial prospective of the developed sensor materials. Finally, the gas sensing mechanism of WO3 MFs sensor has been proposed.

引用

页码：1790 / 1798

页数：9

共 50 条

[1] Sensitive and selective NO2 gas sensor based on WO3 nanoplates
Shendage, S. S.
Patil, V. L.
Vanalakar, S. A.
Patil, S. P.
Harale, N. S.
Bhosale, J. L.
Kim, J. H.
Patil, P. S.
[J]. SENSORS AND ACTUATORS B-CHEMICAL, 2017, 240 : 426 - 433
[2] High sensitivity semiconductor NO2 gas sensor based on mesoporous WO3 thin film
Teoh, LG
Hung, IM
Shieh, J
Lai, WH
Hon, MH
[J]. ELECTROCHEMICAL AND SOLID STATE LETTERS, 2003, 6 (08) : G108 - G111
[3] Understanding the high sensitivity of parallel WO3 sensor toward NO2 gas at low temperature
Yan, Aihua
Xie, Changsheng
Huang, Fei
Li, Huayao
Zhang, Shaoliang
[J]. ADVANCES IN CHEMICAL, MATERIAL AND METALLURGICAL ENGINEERING, PTS 1-5, 2013, 634-638 : 3866 - 3869
[4] Sensitivity properties of a novel NO2 gas sensor based on mesoporous WO3 thin film
Teoh, LG
Hon, YM
Shieh, J
Lai, WH
Hon, MH
[J]. SENSORS AND ACTUATORS B-CHEMICAL, 2003, 96 (1-2) : 219 - 225
[5] NO2 sensitivity of a heterojunction sensor based on WO3 and doped SnO2
Ling, Z
Leach, C
Freer, R
[J]. JOURNAL OF THE EUROPEAN CERAMIC SOCIETY, 2003, 23 (11) : 1881 - 1891
[6] Facile synthesis of hierarchical carpet-like WO3 microflowers for high NO2 gas sensing performance
Han, Lifeng
Chen, Junli
Zhang, Yonghui
Liu, Yingliang
Zhang, Li
Cao, Shaokui
[J]. MATERIALS LETTERS, 2018, 210 : 8 - 11
[7] High performance isopropanol sensor employing hierarchical WO3 microflowers
Mahata, Bidesh
Acharyya, Snehanjan
Eshore, Abhijit
Banerji, Pallab
Guha, Prasanta Kumar
[J]. 2023 IEEE SENSORS, 2023,
[8] The effect of relative humidity on the NO2 sensitivity of a SnO2/WO3 heterojunction gas sensor
Ling, Z
Leach, C
[J]. SENSORS AND ACTUATORS B-CHEMICAL, 2004, 102 (01) : 102 - 106
[9] Pulsed laser deposition of WO3 base NO2 gas sensor
Zhao, Y
Feng, ZC
Liang, Y
[J]. TECHNICAL DIGEST OF THE SEVENTH INTERNATIONAL MEETING ON CHEMICAL SENSORS, 1998, : 562 - 564
[10] Sensing characteristics of WO3 thin film as NO2 gas sensor
He, XL
Li, JP
Gao, XG
[J]. INTERNATIONAL CONFERENCE ON SENSOR TECHNOLOGY (ISTC 2001), PROCEEDINGS, 2001, 4414 : 207 - 209

← 1 2 3 4 5 →