Hydrogen sensors based on Pt-loaded WO3 sensing layers

被引：28

作者：

Bose, R. Jolly ^{[1
,2
]}

Illyaskutty, Navas ^{[3
]}

Tan, K. S. ^{[4
]}

Rawat, R. S. ^{[4
]}

Matham, Murukeshan Vadakke ^{[5
]}

Kohler, Heinz ^{[3
]}

Pillai, V. P. Mahadevan ^{[1
]}

机构：

[1] Univ Kerala Kariavattom, Dept Optoelect, Thiruvananthapuram 695581, Kerala, India

[2] Govt Coll Kariavattom, Dept Phys, Thiruvananthapuram 695581, Kerala, India

[3] Karlsruhe Univ Appl Sci, Inst Sensor & Informat Syst, Moltkestr 30, D-76133 Karlsruhe, Germany

[4] Nanyang Technol Univ, Natl Inst Educ, Nat Sci & Sci Educ, Singapore 637616, Singapore

[5] Nanyang Technol Univ, Sch Mech & Aerosp Engn, Div Mfg Engn, Singapore 637616, Singapore

来源：

EPL | 2016年 / 114卷 / 06期

关键词：

THIN-FILMS; GAS SENSORS; DEPOSITION; MECHANISM; CATALYSTS; PD;

D O I：

10.1209/0295-5075/114/66002

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

In this letter we report the enhanced sensing of platinum (Pt)-loaded tungsten oxide (WO3) sensor compared to pure WO3 sensor towards hydrogen (H-2) gas at low operating temperature of 200 degrees C. The hydrogen sensing of pure and Pt-loaded WO3 sensors is reported at operating temperatures 200, 300 and 400 degrees C. The presence of Pt promotes the spillover mechanism and the dissociated H-2 atoms can react with adsorbed/lattice oxygen atoms to release electrons which in turn increases the conductivity of the WO3 film. The H-2 sensing mechanism of Pt-loaded WO3 sensor is investigated using micro-Raman spectroscopy. The Raman spectrum of Pt-loaded sensing layer shows a shift of symmetric stretching band from 796 to 804 cm(-1) with the introduction of H-2 gas. Copyright (C) EPLA, 2016

引用

页数：6

共 50 条

[41] Optical fiber hydrogen sensor based on evaporated Pt/WO3 film
Li, Zhi
Yang, Minghong
Dai, Jixiang
Wang, Gaopeng
Huang, Chujia
Tang, Jianguan
Hu, Wenbin
Song, Han
Huang, Pengcheng
SENSORS AND ACTUATORS B-CHEMICAL, 2015, 206 : 564 - 569
[42] Hydrogen gas sensing properties of Pt/WO3 thin film in various measurement condition
Yamaguchi, Yuki
Emoto, Yukari
Kineri, Tohru
Fujimoto, Masakatsu
Mae, Hideo
Yasumori, Atsuo
Nishio, Keishi
JOURNAL OF THE AUSTRALIAN CERAMIC SOCIETY, 2012, 48 (01): : 128 - 132
[43] Highly sensitive triethylamine gas sensor by Pt-loaded p-n heterojunction Co3O4/WO3
Song, Zhenlin
Zeng, Jiyang
Zi, Baoye
Chen, Fengying
Zhang, Yumin
Zhang, Genlin
Zhu, Zhongqi
Zhang, Jin
Liu, Qingju
NANOTECHNOLOGY, 2023, 34 (04)
[44] Fabrication of WO3 nanotube sensors and their gas sensing properties
An, Soyeon
Park, Sunghoon
Ko, Hyunsung
Lee, Chongmu
CERAMICS INTERNATIONAL, 2014, 40 (01) : 1423 - 1429
[45] Photon assisted room-temperature hydrogen sensors using PdO loaded WO3 nanohybrids
Geng, Xin
Luo, Yifan
Zheng, Bingbing
Zhang, Chao
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY, 2017, 42 (09) : 6425 - 6434
[46] (3-Aminopropyl) triethoxysilane-based immobilization of Pt/WO3 on a microfiber sensor for high sensitivity hydrogen sensing
Gao, Qiao
Liu, Bin
Hu, Yingying
Liu, Juan
Wan, Shengpeng
Wu, Tao
He, Xing-Dao
Lu, Ping
Yuan, Jinhui
Ma, Renli
Ghassemlooy, Zabih
Farrell, Gerald
Wu, Qiang
SENSORS AND ACTUATORS B-CHEMICAL, 2023, 393
[47] A review on WO3 based gas sensors: Morphology control and enhanced sensing properties
Dong, Chengjun
Zhao, Rongjun
Yao, Lijia
Ran, Yan
Zhang, Xu
Wang, Yude
JOURNAL OF ALLOYS AND COMPOUNDS, 2020, 820
[48] Ethanol and ozone sensing characteristics of WO3 based sensors activated by Au and Pd
Labidi, A.
Gillet, E.
Delamare, R.
Maaref, M.
Aguir, K.
SENSORS AND ACTUATORS B-CHEMICAL, 2006, 120 (01): : 338 - 345
[49] Opposite Response of CO for WO3 and Au: WO3 Sensors
Ramgir, Niranjan S.
Ganapati, S. Kailasa
Datta, N.
Kaur, M.
Debnath, A. K.
Aswal, D. K.
Gupta, S. K.
SOLID STATE PHYSICS, PTS 1 AND 2, 2012, 1447 : 679 - 680
[50] Hydrogen sensors based on 2D WO3 nanosheets prepared by anodization
Rahmani, Mohammad Bagher
Yaacob, Mohd Hanif
Sabri, Ylias Mohammad
SENSORS AND ACTUATORS B-CHEMICAL, 2017, 251 : 57 - 64

← 1 2 3 4 5 →