Preparation of Gold Nanoparticle/Graphene Composites with Controlled Weight Contents and Their Application in Biosensors

被引：373

作者：

Hong, Wenjing ^{[1
]}

Bai, Hua ^{[1
]}

Xu, Yuxi ^{[1
]}

Yao, Zhiyi ^{[1
]}

Gu, Zhongze ^{[2
]}

Shi, Gaoquan ^{[1
]}

机构：

[1] Tsinghua Univ, Dept Chem, Key Lab Bioorgan Phosphorous Chem & Chem Biol, Beijing 100084, Peoples R China

[2] Southeast Univ, Sch Biol Sci & Med Engn, State Key Lab Bioelect, Nanjing 210096, Peoples R China

来源：

JOURNAL OF PHYSICAL CHEMISTRY C | 2010年 / 114卷 / 04期

基金：

中国国家自然科学基金;

关键词：

ASCORBIC-ACID; URIC-ACID; ELECTROCHEMICAL DETERMINATION; GRAPHENE; NANOCOMPOSITE; OXIDATION; DOPAMINE; SUPPORT; PHASE; FILMS;

D O I：

10.1021/jp9101724

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Positively charged gold nanoparticles (GNPs) with diameters of 2-6 nm were self-assembled onto the surfaces of 1-pyrene butyric acid functionalized graphene (PFG) sheets simply by mixing their aqueous dispersions. The amount of GNPs assembled on PFG sheets can be easily modulated by controlling the feeding weight ratio of both components. Furthermore, it was found that PFG sheets had a high loading capability of GNPs, and the maximum value was determined to be about 300 times the PFG's own weight. Glassy carbon (GC) electrodes modified with the composite of GNPs and PFG (GNP-PFG composite) showed strong electrocatalytic activity and high electrochemical stability. A uric acid electrochemical sensor based on the composite modified electrode exhibited rapid response and high sensitivity.

引用

页码：1822 / 1826

页数：5

共 45 条

[1] Honeycomb Carbon: A Review of Graphene [J].