贵金属纳米粒子，比如铂、金、银都具有很好的催化性能，它们作为催化剂被广

Noble metal nanoparticles, such as platinum, gold, silver has good catalytic properties, they are widely used as a catalyst electrode in an electrochemical modification. Wherein the nano-sized gold has good biocompatibility, corrosion resistance, high sensitivity, convenient production, etc., it is widely used in the modified electrode. Nanoparticles modified electrode important feature in the application it is based on a sensing nanoparticle signal amplification function resulting high specific surface area, thus showing a higher electrocatalytic activity. Gold also reduce the redox potential of some reactions occurring on the electrode material, and the catalytic oxidation of these materials in electrochemical reduction reaction on an electrode, excellent electrical conductivity, catalytic activity and good biocompatibility. This paper reviews the preparation of gold nanoparticles modified common electrode for the analysis of materials, application of drug testing, bio-analysis, and the prospect of its development.

贵金属纳米粒子，比如铂、金、银都具有很好的催化性能，它们作为催化剂被广泛地应用于电化学修饰电极中。其中，纳米尺寸的金具有良好的生物亲和性、耐腐蚀性、灵敏度高、制作方便快捷等优点，广泛应用于修饰电极中。纳米粒子修饰电极在应用中的重要特点就是基于纳米粒子的高比表面积所导致的对传感信号放大的功能，从而显示出更高的电催化活性。金纳米还能降低一些物质在电极上发生反应的氧化还原电位，并催化这些物质在电极上的电化学氧化还原反应，具有优良的导电能力、较好生物相容性和催化活性。本文综述了金纳米颗粒修饰电极的常用制备方法及其在材料分析、药物检测、生物分析等方面的应用，并对其发展方向进行了展望。

Noble metal nanoparticles, such as platinum, gold and silver, have good catalytic properties. They are widely used as catalysts in electrochemical modified electrodes. Among them, nano-sized fittings have good biological affinity, corrosion resistance, high sensitivity, easy to manufacture and other advantages, and are widely used in modified electrodes. The important feature of nanoparticle modified electrode in the application is that it can amplify the sensing signal due to the high specific surface area of nanoparticle, thus showing higher electrocatalytic activity. Gold nanoparticles can also reduce the redox potential of some substances on the electrode and catalyze the redox reaction of these substances on the electrode, which has excellent conductivity, good biocompatibility and catalytic activity. In this paper, the preparation methods of gold nanoparticle modified electrode and its application in material analysis, drug detection, bioanalysis are reviewed, and its development direction is prospected.<br>