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

机译:3D多孔α-Ni(OH)(2)纳米结构与炭黑相互连接,作为室温下NO2的高性能气体传感材料

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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.
机译:通过使用十二烷基苯磺酸钠(SDB)作为模板和插层,通过简单的回流方法合成三维(3D)α-Ni(OH)/炭黑复合物(NiCB)。 NICB具有20mg炭黑(NICB20)在室温(RT)下,在室温(RT)下表现出2S至100ppm NO2的快速响应时间。这种类型的3D复合材料表现出花样的纳米结构,其由花结构中心的α-Ni(OH)(2)纳米薄片和CB纳米粒子装饰组成,并以高表面积(175.1米(2)G (-1))。还讨论了可能的气体传感机制。增强的气体传感性能可以归因于高度多孔结构,高比表面的协同作用,以及Cb和3Dα-Ni(OH)(2)纳米层的高导电率之间的相互作用,这对于气体扩散而言是有利的吸附到NiCB20的表面上。本文所述的α-Ni(OH)(2)/ Cb传感器的高性能证明它们是NO2环境监测中的前景材料。

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  • 来源
    《RSC Advances》 |2015年第123期|共8页
  • 作者单位

    Heilongjiang Univ Sch Chem &

    Mat Sci Key Lab Funct Inorgan Mat Chem Minist Educ Harbin 150080 Peoples R China;

    Heilongjiang Univ Sch Chem &

    Mat Sci Key Lab Funct Inorgan Mat Chem Minist Educ Harbin 150080 Peoples R China;

    Heilongjiang Univ Sch Chem &

    Mat Sci Key Lab Funct Inorgan Mat Chem Minist Educ Harbin 150080 Peoples R China;

    Heilongjiang Univ Sch Chem &

    Mat Sci Key Lab Funct Inorgan Mat Chem Minist Educ Harbin 150080 Peoples R China;

    Heilongjiang Univ Sch Chem &

    Mat Sci Key Lab Funct Inorgan Mat Chem Minist Educ Harbin 150080 Peoples R China;

    Nanchang Hangkong Univ Dept Mat Chem Nanchang 330063 Peoples R China;

    Heilongjiang Univ Sch Chem &

    Mat Sci Key Lab Funct Inorgan Mat Chem Minist Educ Harbin 150080 Peoples R China;

    Heilongjiang Univ Sch Chem &

    Mat Sci Key Lab Funct Inorgan Mat Chem Minist Educ Harbin 150080 Peoples R China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 化学;
  • 关键词

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