Design and preparation of the WO3 hollow spheres@ PANI conducting films for room temperature flexible NH3 sensing device

被引：106

作者：

Li, Siqi ^{[1
,2
]}

Liu, Ao ^{[1
,2
]}

Yang, Zijie ^{[1
,2
]}

Zhao, Liupeng ^{[1
,2
]}

Wang, Jing ^{[1
,2
]}

Liu, Fangmeng ^{[1
,2
]}

You, Rui ^{[3
]}

He, Junming ^{[1
,2
,3
]}

Wang, Caileng ^{[1
,2
,3
]}

Yan, Xu ^{[1
,2
]}

Sun, Peng ^{[1
,2
]}

Liang, Xishuang ^{[1
,2
]}

Lu, Geyu ^{[1
,2
]}

机构：

[1] Jilin Univ, State Key Lab Integrated Optoelect, Key Lab Gas Sensors, 2699 Qianjin St, Changchun 130012, Jilin, Peoples R China

[2] Jilin Univ, Coll Elect Sci & Engn, 2699 Qianjin St, Changchun 130012, Jilin, Peoples R China

[3] Tsinghua Univ, Dept Precis Instrument, Beijing 100084, Peoples R China

来源：

SENSORS AND ACTUATORS B-CHEMICAL | 2019年 / 289卷

基金：

中国博士后科学基金;

关键词：

NH3; sensor; Room temperature; WO3 hollow spheres@ polyaniline hybrid; p-n Junction; Flexible PET device; NANOCOMPOSITE THIN-FILM; LOADED TIN DIOXIDE; ENHANCED SENSITIVITY; FACILE FABRICATION; GAS SENSITIVITY; PET SUBSTRATE; SENSOR; POLYANILINE; PERFORMANCE; OXIDE;

D O I：

10.1016/j.snb.2019.03.073

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

The development of room temperature NH3 sensors with flexible substrate can fulfill the future demands of high NH3 sensing performance under the premise of lower energy consumption and safety circumstance in wearable electronics field. The polyaniline and a serious of WO3 hollow spheres@ polyaniline hybrid were successfully synthesized via a combined route of simple hydrothermal method and in-situ chemical oxidative polymerization. The room temperature NH3 sensors were fabricated by assembling WO3 hollow spheres@ polyaniline hybrid on flexible polyethylene terephthalate (PET) films. The NH3 sensing properties of the fabricated devices demonstrated that the device utilizing 10 mol% WO3 hollow spheres@ polyaniline (PAWHs 10) hybrid exhibited the best sensing performance to 100 ppm NH3 (response value at 25) at 20 degrees C. Moreover, the PAWHs10 hybrid sensor also achieved excellent NH3 selectivity, ppb-level detection limit (1.67-500 ppb NH3), and good response/recovery rates (136 s/130 s) at 20 degrees C. The enhanced sensing performance of incorporation of polyaniline and WO3 hollow spheres was mainly attributed to the hollow structure of WO3 and the formation of p-n heterojunction between PANI and WO3 hollow spheres.

引用

页码：252 / 259

页数：8