Silver Oxide Nanowalls Grown on Cu Substrate as an Enzymeless Glucose Sensor
Silver Oxide Nanowalls Grown on Cu Substrate as an Enzymeless Glucose Sensor
复制标题
在铜基板上生长的氧化银纳米墙作为无酶葡萄糖传感器
DOI：
10.1021/am900576z
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发表时间：
2009-12-01
影响因子：
9.5
通讯作者：
Zhang, Xiaojun
中科院分区：
文献类型：
--
作者：
Fang, Bin;Gu, Aixia;Zhang, Xiaojun
采用简单的一锅水热法，在Cu衬底上合成了由密密麻麻的纳米板组成的Ag(2)O纳米壁。制备了Cu-Ag(2)O纳米壁无酶葡萄糖传感器。与传统的Ag(2)O纳米花和Cu-Ag(2)O纳米纺锤体相比，Cu-Ag(2)O纳米墙对葡萄糖氧化具有更高的催化作用。在0.4 V的施加电位下，传感器对葡萄糖（GO）产生了298.2 μ A mM（-1）的超高灵敏度。在0.2 ~ 3.2 mM浓度范围内呈线性响应，检出限为0.01 mM （S/N = 3）。令人满意的是，Cu-Ag(2)O纳米壁修饰电极不仅成功地消除了葡萄糖催化氧化过程中尿酸（UA）、抗坏血酸（AA）和果糖（FO）的干扰。Cu-Ag(2)O纳米壁修饰电极具有高灵敏度、高选择性、稳定和快速的葡萄糖电流传感能力，因此在未来的非酶葡萄糖传感器开发中具有广阔的前景。
Ag(2)O nanowalls consisting of densely packed nanoplates based on a Cu substrate were synthesized through a facile one-pot hydrothermal method. A now enzymeless glucose sensor of Cu-Ag(2)O nanowalls was fabricated. The Cu-Ag(2)O nanowalls showed higher catalysis on glucose oxidation than traditional Ag(2)O nanoflowers and Cu-Ag(2)O nanospindles. At an applied potential of 0.4 V, the sensor produced an ultrahigh sensitivity to glucose (GO) of 298.2 mu A mM(-1). Linear response was obtained over a concentration range from 0.2 mM to 3.2 mM with a detection limit of 0.01 mM (S/N = 3). Satisfyingly, the Cu-Ag(2)O nanowalls modified electrode was riot only successfully employed to eliminate the interferences from uric acid (UA) acid ascorbic (AA) and also Fructose (FO) during the catalytic oxidation of glucose. The Cu-Ag(2)O nanowalls modified electrode allows highly sensitive, excellently selective, stable, and fast amperometric sensing of glucose and thus is promising for the future development of nonenzymatic glucose sensors.