合成锌、钴和铜羟基碳酸盐以制造电化学非酶葡萄糖传感器

Zhanar Kalkozova, U. A. Balgimbayeva, A. Serikkanov, Khabibulla Abdullin
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引用次数: 0

摘要

非酶切葡萄糖传感器具有灵敏度高、响应速度快和操作简便等优点,有望成为可重复使用的电化学测试系统。贵金属纳米颗粒、基于碳纳米材料的复合材料和金属氧化物等多种材料被用于制造非酶葡萄糖传感器。为制造高灵敏度葡萄糖传感器寻找新材料是一项紧迫任务。在本研究中,对一种有望制造葡萄糖生物传感器的新型传感器材料进行了研究。锌、钴和铜羟基碳酸盐是在 120 摄氏度下通过水热法合成的,并通过扫描电子显微镜、X 射线衍射分析、拉曼光谱和电化学方法对其进行了表征。结果表明,合成的材料对葡萄糖具有高灵敏度(11.2 mA*mM-1*cm-2)、宽灵敏度范围和热稳定性,有望用于开发非酶葡萄糖生物传感器。当葡萄糖浓度在 0.5 mM 以下的范围内变化时,根据电化学响应的大小评估的检测限为 0.007 mM。获得的材料在氧化气氛中加热时具有高达 200 oC 的热稳定性,这对于确保感官特性的长期稳定性非常重要。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
SYNTHESIS OF ZINC, COBALT AND COPPER HYDROXY-CARBONATES FOR CREATION OF ELECTROCHEMICAL NON-ENZYMATIC GLUCOSE SENSOR
Non-enzymatic glucose sensors are promising for reusable electrochemical test systems because of their high sensitivity, fast response and ease of operation. A wide class of materials such as noble metal nanoparticles, composites based on carbon nanomaterials, and metal oxides are used to create non-enzymatic glucose sensors. The search for new materials for the creation of highly sensitive glucose sensors is an urgent task. In the present work a new sensor material promising for the creation of glucose biosensors is investigated. Zinc, cobalt and copper hydroxy-carbonates were synthesized by hydrothermal method at 120 oC and characterized by scanning electron microscopy, X-ray diffraction analysis, Raman spectroscopy and electrochemical methods. It is shown that the synthesized material exhibits high sensitivity to glucose (11.2 mA*mM-1*cm-2), wide sensitivity range, thermal stability and is promising for the development of non-enzymatic glucose biosensors. The limit of detection, evaluated by the magnitude of the electrochemical response when the glucose concentration was varied within the interval up to 0.5 mM, was 0.007 mM. The obtained material showed thermal stability up to 200 oC when heated in an oxidizing atmosphere, which is important for ensuring long-term stability of sensory characteristics.
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