3D porous α-Ni(OH)2 nanostructure interconnected with carbon black as a high-performance gas sensing material for NO2 at room temperature

被引:17
作者
Chu, Zhenyu [1 ]
Sun, Hongxin [1 ]
Xu, He [1 ]
Zhou, Jiao [1 ]
Zhang, Guo [1 ]
Xie, Yu [3 ]
Li, Li [1 ,2 ]
Shi, Keying [1 ]
机构
[1] Heilongjiang Univ, Sch Chem & Mat Sci, Key Lab Funct Inorgan Mat Chem, Minist Educ, Harbin 150080, Peoples R China
[2] Heilongjiang Univ, Sch Chem & Mat Sci, Key Lab Chem Engn Proc & Technol High Efficiency, Harbin 150080, Peoples R China
[3] Nanchang Hangkong Univ, Dept Mat Chem, Nanchang 330063, Peoples R China
基金
中国国家自然科学基金;
关键词
NANOTUBE TEMPLATES; NICKEL-HYDROXIDE; SENSORS; NANOPARTICLES; NANOMATERIALS; NANOSHEETS; ELECTRODE; PARTICLES; SIZE;
D O I
10.1039/c5ra17575e
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
Three dimensional (3D) alpha-Ni(OH)(2)/carbon black composite (NiCB) was synthesized by a simple refluxing method using sodium dodecyl benzene sulfonate (SDBS) as the template and intercalation layer. NiCB with 20 mg carbon black (NiCB20) exhibited a fast response time of 2 s to 100 ppm NO2 at room temperature (RT). This type of 3D composite exhibited a flower-like nanostructure, which consisted of alpha-Ni(OH)(2) nanoflakes and CB nanoparticles decoration at the centre of the flower structure, and featured a high surface area (175.1 m(2) g(-1)). A possible gas sensing mechanism was also discussed. The enhanced gas sensing properties could be ascribed to the synergism of the highly porous structure, high specific surface, and interactions between high conductivity of the CB and 3D alpha-Ni(OH)(2) nanoplane, which was advantageous for gas to diffuse and adsorb-desorb onto the surface of the NiCB20. The high performance of alpha-Ni(OH)(2)/CB sensors described herein demonstrates them to be a prospect material in environmental monitoring of NO2.
引用
收藏
页码:101760 / 101767
页数:8
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