Nanocasting synthesis and gas-sensing behavior of hematite nanowires

被引：11
作者：
Li, Danping [1 ]
Zhang, Y. [2 ]
Xu, Jingcai [1 ]
Jin, Hongxiao [1 ]
Jin, Dingfeng [1 ]
Hong, Bo [1 ]
Peng, Xiaoling [1 ]
Wang, Panfeng [1 ]
Ge, Hongliang [1 ]
Wang, Xinqing [1 ]
机构：
[1] China Jiliang Univ, Coll Mat Sci & Engn, Hangzhou 310018, Peoples R China
[2] China Jiliang Univ, Coll Opt & Elect Technol, Hangzhou 310018, Peoples R China
来源：
PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES | 2016年 / 84卷
基金：
中国国家自然科学基金;
关键词：
Nanostructures; Chemical synthesis; Microstructure; Gas-sensing behavior; ALPHA-FE2O3; NANOPARTICLES; POROUS ALPHA-FE2O3; PHOTOCATALYTIC PROPERTY; HYDROTHERMAL SYNTHESIS; FACILE SYNTHESIS; SENSOR; NANOSPHERES; SURFACE;
D O I：
10.1016/j.physe.2016.07.024
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
The dispersed and uniform hematite nanowires (alpha-Fe2O3 NWs) with the different diameter were synthesized using SBA-15 as hard templates by the nanocasting method, and the diameter of alpha-Fe2O3 NWs was about 4, 6 and 8 nm, respectively. The BET surface area of alpha-Fe2O3 NWs changed a little, while the bandgap decreased from 2.07, 2.03 to 1.91 eV with the increasing diameter according to quantum size effect. Compared all samples, the sensitivity of alpha-Fe2O3 NWs based gas-sensors increased from 10.64 to 11.43 with the bandgap and BET surface area alpha-Fe2O3 NWs in 100 ppm ethanol at 300 degrees C, and the response recovery time was also improved for the good crystallinity. It's concluded that the surface area greatly affected the gas-sensing performance of alpha-Fe2O3 NWs based sensors, while the bandgap and crystallinity also influenced the gas-sensing behavior to some extent. The alpha-Fe2O3 NWs based gas-sensors exhibited the high sensitivity, fast response recovery and good selectivity to ethanol. (C) 2016 Elsevier B.V. All rights reserved.
引用
收藏
页码：395 / 400
页数：6
相关论文
共 30 条
[1]   Preferential growth of long ZnO nanowires and its application in gas sensor [J].
Gu, Cuiping ;
Li Shanshan ;
Huang, Jiarui ;
Shi, Chengcheng ;
Liu, Jinhuai .
SENSORS AND ACTUATORS B-CHEMICAL, 2013, 177 :453-459
[2]   Hematite solid and hollow spindles: Selective synthesis and application in gas sensor and photocatalysis [J].
Huang, Jiarui ;
Yang, Min ;
Gu, Cuiping ;
Zhai, Muheng ;
Sun, Yufeng ;
Liu, Jinhuai .
MATERIALS RESEARCH BULLETIN, 2011, 46 (08) :1211-1218
[3]   Hematite nanostructures: Morphology-mediated liquefied petroleum gas sensors [J].
Jadhav, Vijaykumar V. ;
Patil, Supriya A. ;
Shinde, Dipak V. ;
Waghmare, Shivaji D. ;
Zate, Manohar K. ;
Mane, Rajaram S. ;
Han, Sung-Hwan .
SENSORS AND ACTUATORS B-CHEMICAL, 2013, 188 :669-674
[4]   Vertically Ordered Hematite Nanotube Array as an Ultrasensitive and Rapid Response Acetone Sensor [J].
Kim, Do Hong ;
Shim, Young-Seok ;
Jeon, Jong-Myeong ;
Jeon, Hu Young ;
Park, Sung Soo ;
Kim, Young-Woon ;
Rim, Jin-Sang ;
Lee, Jong-Heun ;
Jang, Ho Won .
ACS APPLIED MATERIALS & INTERFACES, 2014, 6 (17) :14779-14784
[5]   Relationship of magnetic behavior and surface spin coupling in Hematite nanowires bundles [J].
Li, D. P. ;
Zhang, Y. ;
Wang, P. F. ;
Xu, J. C. ;
Han, Y. B. ;
Jin, H. X. ;
Jin, D. P. ;
Peng, X. L. ;
Hong, B. ;
Li, J. ;
Yang, Y. T. ;
Gong, J. ;
Ge, H. L. ;
Wang, X. Q. .
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 2016, 411 :128-132
[6]   Wide bandgap mesoporous hematite nanowire bundles as a sensitive and rapid response ethanol sensor [J].
Li, Danping ;
Zhang, Beibei ;
Xu, Jingcai ;
Han, Yanbing ;
Jin, Hongxiao ;
Jin, Dingfeng ;
Peng, Xiaoling ;
Ge, Hongliang ;
Wang, Xinqing .
NANOTECHNOLOGY, 2016, 27 (18)
[7]   Synthesis, characterization and photocatalytic activity of α-Fe2O3 nanoparticles [J].
Maji, Swarup Kumar ;
Mukherjee, Nillohit ;
Mondal, Anup ;
Adhikary, Bibhutosh .
POLYHEDRON, 2012, 33 (01) :145-149
[8]   ZnO-SnO2 based composite type gas sensor for selective hydrogen sensing [J].
Mondal, Biplob ;
Basumatari, Borat ;
Das, Jayoti ;
Roychaudhury, Chirosree ;
Saha, Hiranmay ;
Mukherjee, Nillohit .
SENSORS AND ACTUATORS B-CHEMICAL, 2014, 194 :389-396
[9]   Facile synthesis of α-Fe2O3 nanoparticles for high-performance CO gas sensor [J].
Nguyen Duc Cuong ;
Dinh Quang Khieu ;
Tran Thai Hoa ;
Duong Tuan Quang ;
Pham Hung Viet ;
Tran Dai Lam ;
Nguyen Duc Hoa ;
Nguyen Van Hieu .
MATERIALS RESEARCH BULLETIN, 2015, 68 :302-307
[10]   Highly sensitive and selective volatile organic compound gas sensors based on mesoporous nanocomposite monoliths [J].
Nguyen Duc Hoa ;
El-Safty, Sherif A. .
ANALYTICAL METHODS, 2011, 3 (09) :1948-1956
123