Highly sensitive non-enzymatic glucose sensor based on Pt nanoparticle decorated graphene oxide hydrogel
Highly sensitive non-enzymatic glucose sensor based on Pt nanoparticle decorated graphene oxide hydrogel
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DOI：
10.1016/j.snb.2015.01.020
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发表时间：
2015-04-01
影响因子：
8.4
通讯作者：
Hur, Seung Hyun
中科院分区：
文献类型：
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作者：
Hoa, Le Thuy;Sun, Kang Gyu;Hur, Seung Hyun
采用一步水热合成法制备了由铂纳米颗粒和三维石墨烯水凝胶(GOH)组成的高灵敏度非酶葡萄糖传感器。铂纳米颗粒不仅可以作为氧化葡萄糖的电催化剂，还可以作为间隔物，防止石墨烯片层的团聚，增加GOHS的比表面积。在15 mg氯铂酸(HPT)存在下制备的Pt/GoH葡萄糖传感器的比表面积为508m(2)g(-1)，循环伏安法测得葡萄糖灵敏度为137.4 mU A mm(-1)cm(-2)，比未修饰的葡萄糖传感器高7倍。过多的铂颗粒聚集导致比表面积和电催化活性面积的损失，从而导致葡萄糖敏感性的降低。PT/GoH对真实血样具有良好的响应，且不受常见干扰物质抗坏血酸(AA)、尿酸(UA)和多巴胺(DA)的影响。(C)2015爱思唯尔B.V.保留所有权利。
Highly sensitive non-enzymatic glucose sensors composed of Pt nanoparticles and a 3D graphene hydrogel (GOH) were fabricated by a one-step hydrothermal synthesis. The Pt nanoparticles acted not only as electrocatalysts to oxidize glucose but also as spacers that prevent the agglomeration of graphene sheets and increase the surface area of GOHs. The Pt/GOH glucose sensor fabricated in the presence of 15 mg chloroplatinic acid (HPt) exhibited a surface area of 508 m(2)g(-1) and cyclic voltammetry revealed a glucose sensitivity of 137.4 mu A mM(-1)cm(-2), which is 7-fold higher than the undecorated GOH. An excess of Pt resulted in a decrease in glucose sensitivity due to the loss of surface area and electrocatalytic active area by the agglomeration of Pt particles. Pt/GOH showed good response toward real blood samples and was also not affected by ascorbic acid (AA), uric acid (UA) and dopamine (DA) which are common interfering species. (C) 2015 Elsevier B.V. All rights reserved.