Tungsten Oxide Urchin-Flowers and Nanobundles: Effect of Synthesis Conditions and Heat Treatment on Assembly and Gas-Sensing Characteristics

被引：8
作者：
Pham Van Tong [1 ]
Nguyen Duc Hoa [1 ]
Do Dang Trung [1 ]
Nguyen Duc Quang [1 ]
Nguyen Van Hieu [1 ]
机构：
[1] Hanoi Univ Sci & Technol HUST, Int Training Inst Mat Sci ITIMS, Hanoi, Vietnam
来源：
SCIENCE OF ADVANCED MATERIALS | 2014年 / 6卷 / 06期
关键词：
Tungsten Oxide; Nanowires; Assembly; Gas Sensors; WO3; SENSOR; NANOWIRES; FABRICATION; PARTICLES; TEMPLATE; FILMS;
D O I：
10.1166/sam.2014.1854
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
The synthesis and assembly of tungsten oxide nanowires into building blocks are important for nanodevices, such as electrochromic, bio, and gas sensors. In this study, tungsten oxide nanowires with different assembly morphologies of nanobundles and urchin-flowers are synthesized by the wet chemical solvothermal method. The assembly, crystal structure, and specific surface area of the synthesized materials are characterized byusing field-emission scanning electron microscopy, high-resolution transmission electron microscopy, X-ray diffraction, Raman spectroscopy, and nitrogen adsorption/desorption isotherm. The effects of the assembly on the ammonia gas-sensing characteristics of tungsten oxide nanowires are systematically investigated from 350 degrees C to 450 degrees C. Results show that the assembly morphologies of the tungsten oxide nanowires markedly influence the gas-sensing performance of devices. The relationships of gas-sensing characteristics with the diameter, porous structure, and specific surface area of the synthesized materials are also discussed.
引用
收藏
页码：1081 / 1090
页数：10
相关论文
共 50 条
  • [31] Ultrasensitive and highly selective gas sensors using three-dimensional tungsten oxide nanowire networks
    Ponzoni, Andrea
    Comini, Elisabetta
    Sberveglieri, Giorgio
    Zhou, Jun
    Deng, Shao Zhi
    Xu, Ning Sheng
    Ding, Yong
    Wang, Zhong Lin
    [J]. APPLIED PHYSICS LETTERS, 2006, 88 (20)
  • [32] Solvothermally synthesized tungsten oxide nanowires/nanorods for NO2 gas sensor applications
    Qin, Yuxiang
    Li, Xiao
    Wang, Fei
    Hu, Ming
    [J]. JOURNAL OF ALLOYS AND COMPOUNDS, 2011, 509 (33) : 8401 - 8406
  • [33] Rembeza SI, 2000, PHYS STATUS SOLIDI A, V179, P147, DOI 10.1002/1521-396X(200005)179:1<147::AID-PSSA147>3.0.CO
  • [34] 2-N
  • [35] Preparation of 3-D ordered macroporous tungsten oxides and nano-crystalline particulate tungsten oxides using a colloidal crystal template method, and their structural characterization and application as photocatalysts under visible light irradiation
    Sadakane, Masahiro
    Sasaki, Keisuke
    Kunioku, Hironobu
    Ohtani, Bunsho
    Abe, Ryu
    Ueda, Wataru
    [J]. JOURNAL OF MATERIALS CHEMISTRY, 2010, 20 (09) : 1811 - 1818
  • [36] Bundled tungsten oxide nanowires under thermal processing
    Sun, Shibin
    Zhao, Yimin
    Xia, Yongde
    Zou, Zengda
    Min, Guanghui
    Zhu, Yanqiu
    [J]. NANOTECHNOLOGY, 2008, 19 (30)
  • [37] GRAIN-SIZE EFFECTS IN TUNGSTEN OXIDE-BASED SENSOR FOR NITROGEN-OXIDES
    TAMAKI, J
    ZHANG, Z
    FUJIMORI, K
    AKIYAMA, M
    HARADA, T
    MIURA, N
    YAMAZOE, N
    [J]. JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 1994, 141 (08) : 2207 - 2210
  • [38] H2S sensing properties of noble metal doped WO3 thin film sensor fabricated by micromachining
    Tao, WH
    Tsai, CH
    [J]. SENSORS AND ACTUATORS B-CHEMICAL, 2002, 81 (2-3) : 237 - 247
  • [39] Single-Crystal Tungsten Oxide Nanosheets: Photochemical Water Oxidation in the Quantum Confinement Regime
    Waller, Mollie R.
    Townsend, Troy K.
    Zhao, Jing
    Sabio, Erwin M.
    Chamousis, Rachel L.
    Browning, Nigel D.
    Osterloh, Frank E.
    [J]. CHEMISTRY OF MATERIALS, 2012, 24 (04) : 698 - 704
  • [40] Tungsten oxide nanorods array and nanobundle prepared by using chemical vapor deposition technique
    Wang, X. P.
    Yang, B. Q.
    Zhang, H. X.
    Feng, P. X.
    [J]. NANOSCALE RESEARCH LETTERS, 2007, 2 (08): : 405 - 409
12345