New insight into gas sensing performance of nanorods assembled and nanosheets assembled hierarchical WO3•H2O structures

被引：42

作者：

Zhang, Yajie ^{[1
]}

Zeng, Wen ^{[1
]}

Li, Yanqiong ^{[2
]}

机构：

[1] Chongqing Univ, Coll Mat Sci & Engn, Chongqing 400030, Peoples R China

[2] Chongqing Univ Arts & Sci, Sch Elect & Elect Engn, Chongqing 400030, Peoples R China

来源：

MATERIALS LETTERS | 2019年 / 235卷

关键词：

Semiconductor; Functional; Hollow; Sensors; Formation mechanism; HYDROTHERMAL SYNTHESIS; MICROSPHERES;

D O I：

10.1016/j.matlet.2018.10.012

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

WO3 center dot H2O hierarchical structures assembled by nanorods or nanosheets were successfully synthesized via a facile hydrothermal method. Gas sensing behaviors were investigated for these two different nanostructures towards ethanol gas. The results indicated that the nanorods assembled flower-like structure exhibits faster response and recovery time as compared with the nanosheets assembled microspheres, which may be attributed to fast gas diffusion speed in the nanorods assembled nanostructures, while the nanosheets assembled hierarchical flower-like WO3 center dot H2O structures exhibited higher response (54) than that of the WO3 center dot H2O microspheres (25) because of the larger specific surface area and the abundant micro reaction rooms. (C) 2018 Elsevier B.V. All rights reserved.

引用

页码：49 / 52

页数：4

共 12 条

[1] Characterization and optical properties of spherical WO3 nanoparticles synthesized via the reverse microemulsion process and their photocatalytic behavior [J].

Abazari, Reza ;

Mahjoub, Ali Reza ;

Saghatforoush, Lotf Ali ;

Sanati, Soheila .

MATERIALS LETTERS, 2014, 133 :208-211

[2] High-performance energy-storage devices based on WO3 nanowire arrays/carbon cloth integrated electrodes [J].

Gao, Lina ;

Wang, Xianfu ;

Xie, Zhong ;

Song, Weifeng ;

Wang, Lijing ;

Wu, Xiang ;

Qu, Fengyu ;

Chen, Di ;

Shen, Guozhen .

JOURNAL OF MATERIALS CHEMISTRY A, 2013, 1 (24) :7167-7173

[3] Constructing three-dimensional quasi-vertical nanosheet architectures from self-assemble two-dimensional WO3•2H2O for efficient electrochromic devices [J].

Li, Haizeng ;

Wang, Jinmin ;

Shi, Qiuwei ;

Zhang, Minwei ;

Hou, Chengyi ;

Shi, Guoying ;

Wang, Hongzhi ;

Zhang, Qinghong ;

Li, Yaogang ;

Chi, Qijin .

APPLIED SURFACE SCIENCE, 2016, 380 :281-287

[4] Enhanced formic acid gas-sensing property of WO3 nanorod bundles via hydrothermal method [J].

Lu, Na ;

Gao, Xiaoqing ;

Yang, Chao ;

Xiao, Feng ;

Wang, Jide ;

Su, Xintai .

SENSORS AND ACTUATORS B-CHEMICAL, 2016, 223 :743-749

[5] Synthesis of hexagonal WO3 nanowires by microwave-assisted hydrothermal method and their electrocatalytic activities for hydrogen evolution reaction [J].

Phuruangrat, Anukorn ;

Ham, Dong Jin ;

Hong, Suk Joon ;

Thongtem, Somchai ;

Lee, Jae Sung .

JOURNAL OF MATERIALS CHEMISTRY, 2010, 20 (09) :1683-1690

[6] Complexing surfactants-mediated hydrothermal synthesis of WO3 microspheres for gas sensing applications [J].

Shen, Yanbai ;

Chen, Xiangxiang ;

Wang, Wei ;

Gong, Yue ;

Chen, Sihan ;

Liu, Jintong ;

Wei, Dezhou ;

Meng, Dan ;

San, Xiaoguang .

MATERIALS LETTERS, 2016, 163 :150-153

[7] Nanosheets assembled hierarchical flower-like WO3 nanostructures: Synthesis, characterization, and their gas sensing properties [J].

Wang, Chong ;

Li, Xin ;

Feng, Changhao ;

Sun, Yanfeng ;

Lu, Geyu .

SENSORS AND ACTUATORS B-CHEMICAL, 2015, 210 :75-81

[8] Hierarchical WO3•H2O porous microsphere: Hydrothermal synthesis, structure and gas-sensing performance [J].

Yu, Yangchun ;

Zeng, Wen ;

Zhang, Zhi ;

Cai, Yuxin ;

Zhang, He .

MATERIALS LETTERS, 2017, 186 :119-122

[9] A novel WO3•H2O nanostructure assembled with nanorods: Hydrothermal synthesis, growth and their gas sensing properties [J].

Yu, Yangchun ;

Zeng, Wen ;

Yu, Le ;

Wu, Sujuan .

MATERIALS LETTERS, 2016, 180 :51-54

[10] Preparation, characterization and gas sensing properties of sub-micron porous WO3 spheres [J].

Zeng, Wen ;

Dong, Chining ;

Miao, Bin ;

Zhang, He ;

Xu, Sibo ;

Ding, Xuezheng ;

Hussain, Shahid .

MATERIALS LETTERS, 2014, 117 :41-44

← 1 2 →