Growth of TiO2 nanostructures exposed {001} and {110} facets on SiC ultrafine fibers for enhanced gas sensing performance

被引：34

作者：

Wang, Bing ^{[1
]}

Deng, Lei ^{[2
]}

Sun, Lian ^{[1
]}

Lei, Yongpeng ^{[3
]}

Wu, Nan ^{[1
]}

Wang, Yingde ^{[1
]}

机构：

[1] Natl Univ Def Technol, Coll Aerosp Sci & Engn, Sci & Technol Adv Ceram Fibers & Composites Lab, Changsha 410073, Hunan, Peoples R China

[2] Natl Univ Def Technol, Coll Aerosp Sci & Engn, Dept Mat Sci & Engn, Changsha 410073, Hunan, Peoples R China

[3] Natl Univ Def Technol, Coll Basic Educ, Changsha 410073, Hunan, Peoples R China

来源：

SENSORS AND ACTUATORS B-CHEMICAL | 2018年 / 276卷

基金：

中国国家自然科学基金;

关键词：

SiC nanofibers; Titanium oxide facets; Gas sensor; Hydrothermal reduction; CRYSTAL FACETS; SENSORS; RUTILE; NANOFIBERS; NANOSHEETS; DIOXIDE; ANATASE;

D O I：

10.1016/j.snb.2018.08.080

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

In situ detection of toxic and combustible gases in harsh environments is much more desired in the fields of aerospace and chemical industries, etc. Herein, we have successfully grown {001} facets-exposed TiO2 nanosheets (TNS001) and {110} facets-exposed TiO2 nanorods (TNR110) on the surface of macro-meso-microporous SiC fibers (MMM-SFs). The received hierarchical TNS001@MMM-SFs sensor possesses a core-shell hierarchical structure, and exhibits a high response of 19.2 at the temperature of 450 degrees C towards acetone, which is 1.2 and 1.8 times as high as those of TNR110@MMM-SFs and bare TNS001, respectively. Besides, the TNS001@MMM-SFs also present good stability, fascinating selectivity and low response time to acetone. This excellent gas detecting ability is mainly contributed to the exposing of high-energy {001} crystal facets of TiO2 and the synergetic effect of TiO2/SiC heterojunctions as well as the core-shell hierarchical architectures. This work gives a general strategy of exposing high-index energy facet combined with constructing hierarchical heterojunctions structure to fabricate gas sensors.

引用

页码：57 / 64

页数：8

共 28 条

[1] Acetone sensing performances based on nanoporous TiO2 synthesized by a facile hydrothermal method [J].

Chen, Nan ;

Li, Yuxiu ;

Deng, Dongyang ;

Liu, Xu ;

Xing, Xinxin ;

Xiao, Xuechun ;

Wang, Yude .

SENSORS AND ACTUATORS B-CHEMICAL, 2017, 238 :491-500

[2] Selective photocatalytic conversion of glycerol to hydroxyacetaldehyde in aqueous solution on facet tuned TiO2-based catalysts [J].

Chong, Ruifeng ;

Li, Jun ;

Zhou, Xin ;

Ma, Yi ;

Yang, Jingxiu ;

Huang, Lei ;

Han, Hongxian ;

Zhang, Fuxiang ;

Li, Can .

CHEMICAL COMMUNICATIONS, 2014, 50 (02) :165-167

[3] THE STRUCTURES OF ANATASE AND RUTILE [J].

CROMER, DT ;

HERRINGTON, K .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1955, 77 (18) :4708-4709

[4] Stabilizing MoS2 Nanosheets through SnO2 Nanocrystal Decoration for High-Performance Gas Sensing in Air [J].

Cui, Shumao ;

Wen, Zhenhai ;

Huang, Xingkang ;

Chang, Jingbo ;

Chen, Junhong .

SMALL, 2015, 11 (19) :2305-2313

[5] Rectangular Bunched Rutile TiO2 Nanorod Arrays Grown on Carbon Fiber for Dye-Sensitized Solar Cells [J].

Guo, Wenxi ;

Xu, Chen ;

Wang, Xue ;

Wang, Sihong ;

Pan, Caofeng ;

Lin, Changjian ;

Wang, Zhong Lin .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2012, 134 (09) :4437-4441

[6] In situ synthesis of graphitic-C3N4 nanosheet hybridized N-doped TiO2 nanofibers for efficient photocatalytic H2 production and degradation [J].

Han, Cheng ;

Wang, Yingde ;

Lei, Yongpeng ;

Wang, Bing ;

Wu, Nan ;

Shi, Qi ;

Li, Qiong .

NANO RESEARCH, 2015, 8 (04) :1199-1209

[7] Synthesis of Titania Nanosheets with a High Percentage of Exposed (001) Facets and Related Photocatalytic Properties [J].

Han, Xiguang ;

Kuang, Qin ;

Jin, Mingshang ;

Xie, Zhaoxiong ;

Zheng, Lansun .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2009, 131 (09) :3152-+

[8] Logic Control of Interface-Induced Charge-Trapping Effect for Ultrasensitive Gas Detection with All-Mirror-Image Symmetry [J].

Jia, Chuancheng ;

Wang, Qing ;

Xin, Na ;

Zhou, Jian ;

Gong, Yao ;

Li, Lidong ;

Sun, Qiang ;

Guo, Xuefeng .

ADVANCED MATERIALS TECHNOLOGIES, 2016, 1 (03)

[9] Superior electric double layer capacitors using micro- and mesoporous silicon carbide sphere [J].

Kim, Myeongjin ;

Oh, Ilgeun ;

Kim, Jooheon .

JOURNAL OF MATERIALS CHEMISTRY A, 2015, 3 (07) :3944-3951

[10] Superior acetone gas sensor based on electrospun SnO2 nanofibers by Rh doping [J].

Kou, Xueying ;

Xie, Ning ;

Chen, Fang ;

Wang, Tianshuang ;

Guo, Lanlan ;

Wang, Chong ;

Wang, Qingji ;

Ma, Jian ;

Sun, Yanfeng ;

Zhang, Hong ;

Lu, Geyu .

SENSORS AND ACTUATORS B-CHEMICAL, 2018, 256 :861-869

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