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首页> 外文期刊>Materials Chemistry and Physics >Synthesis of one-dimensional β-Ni(OH)_2 nanostructure and their application as nonenzymatic glucose sensors
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Synthesis of one-dimensional β-Ni(OH)_2 nanostructure and their application as nonenzymatic glucose sensors

机译：一维β-Ni（OH）_2纳米结构的合成及其在非酶葡萄糖传感器中的应用

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摘要

One-dimensional (ID) β-Ni(OH)_2 nanostructure with high surface area have been successfully synthesized via the crystallization-dissolution-recrystallization growth mechanism. The reason why the ID beta-Ni(OH)_2 nanowires can be obtained is that the intermediates α-Ni(OH)_2 crystals is internal unstable state and the reaction system switched from alkalescence to acidity with increasing of reaction time. The switch from alkalescence to acidity of reaction system attribute to the hydrolysis of CF_3COONa which is the strong base-weak acid salt. In the initial stage, the hydrolysis of CF_3COONa provides controlled quantities of OH~- ions for the formation of α-Ni(OH)_2 crystals. While the OH~- supplies to the precipitation of Ni(OH)_2, the CF_3COOH of the system increases continually. Following the incessant increase of the concentration of CF3COOH, the reaction system switched from alkalescence to acidity. The unstable state of α-Ni(OH)_2 crystals derived from that CF_3COO~-, H_2O, and NO_3- were intercalated into the inter-layer space of α-Ni(OH)_2 crystals. The unstable state of α-Ni(OH)_2 crystals make these crystals easy to redissolute into the solution and recrystallizate. The unique morphology and large BET surface areas give β-Ni(OH)_2 nanowires an advantage over the β-Ni(OH)_2 nanosheets in the application for nonenzymatic glucose sensor. The nonenzymatic glucose sensor based on one-dimensional β-Ni(OH)_2 nanostructure exhibits an enhanced electrocatalytic property, high sensitivity, and fast amperometric sensing toward oxidation of glucose.
机译：通过结晶-溶解-再结晶生长机理成功地合成了具有高表面积的一维（ID）β-Ni（OH）_2纳米结构。之所以能够获得IDβ-Ni（OH）_2纳米线，是因为中间体α-Ni（OH）_2晶体处于内部不稳定状态，并且随着反应时间的增加，反应体系从碱性转变为酸性。反应体系从碱性到酸性的转变归因于强碱弱酸盐CF_3COONa的水解。在初始阶段，CF_3COONa的水解为形成α-Ni（OH）_2晶体提供受控数量的OH-离子。当OH〜-提供给Ni（OH）_2沉淀时，系统的CF_3COOH持续增加。随着CF3COOH浓度的不断增加，反应体系从碱性转变为酸性。由CF_3COO〜-，H_2O和NO_3-衍生的α-Ni（OH）_2晶体的不稳定状态被插入α-Ni（OH）_2晶体的层间空间。 α-Ni（OH）_2晶体的不稳定状态使这些晶体易于重新溶入溶液中并重结晶。独特的形态和较大的BET表面积使β-Ni（OH）_2纳米线在非酶葡萄糖传感器的应用中优于β-Ni（OH）_2纳米片。基于一维β-Ni（OH）_2纳米结构的非酶葡萄糖传感器显示出增强的电催化性能，高灵敏度和对葡萄糖氧化的快速安培感测。

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  • 来源
    《Materials Chemistry and Physics》 |2012年第3期|387-394|共8页
  • 作者

    Zhijun Luo; Sheng Yin; Kun Wang; Huaming Li; Leigang Wang; Hui Xu; Jiexiang Xia;

  • 作者单位

    School of The Environment, Jiangsu University, Zhenjiang 212013, PR China,State Key Laboratory of Coordination Chemistry, Nanjing University, Nanjing 210093, PR China;

    School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, PR China;

    School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, PR China;

    School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, PR China;

    School of Materials Science and Engineering, Jiangsu University, Zhenjiang 212013, PR China;

    School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, PR China;

    School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, PR China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    nanostructures; crystal growth; precipitation; electrochemical properties;

    机译：纳米结构晶体生长沉淀;电化学性能;

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