摘要
采用电沉积法在过滤阴极真空电弧技术合成的掺磷四面体非晶碳(ta-C∶P)薄膜表面沉积纳米金团簇,制备纳米金修饰的掺磷非晶碳(Au/ta-C∶P)薄膜电极。利用X射线光电子能谱、拉曼光谱、扫描电子显微镜和电化学伏安法表征ta-C∶P和Au/ta-C∶P的微观结构、表面形貌和电化学行为。结果表明,-80V的脉冲偏压更利于磷原子进入碳的网络,并明显增加薄膜的电导率和电化学活性。纳米金团簇可增加ta-C∶P电极的有效面积,提高对铁氰化钾氧化还原反应的活性和电极可逆性,增强对多巴胺的催化活性。研究结果揭示ta-C∶P和Au/ta-C∶P薄膜在电分析及生物传感器方面的潜在应用。
An electrochemical electrode of a phosphorus-doped tetrahedral amorphous carbon film modified with gold nanoclusters（Au/ta-C∶P）was prepared by electrodepositing gold nanoclusters on the surface of ta-C∶P film synthesized by filtered cathodic vacuum arc technology.The microstructure,surface morphology and electrochemical behavior of ta-C∶P and Au/ta-C∶P films were characterized by X-ray photoelectron spectroscopy,Raman spectroscopy,scanning electron microscopy and electrochemical voltammetry.Results indicated that a pulse bias of-80V was favorable for doping phosphorus into the carbon network to improve the electrical conduction and electrochemical activity of the film.Furthermore,gold nanoclusters increased the effective surface area of the ta-C∶P electrode,enhanced the activity and reversibility towards the ferricyanide oxidation reaction and improved the activity for the catalytic oxidation of dopamine.All of these revealed the potential applications of ta-C∶P and Au/ta-C∶P films in electroanalysis and biosensors.
出处
《新型炭材料》
SCIE
EI
CAS
CSCD
北大核心
2010年第5期363-369,共7页
New Carbon Materials
基金
国家自然科学基金(50972031)
浙江省教育厅科研项目(Y200806012)
先进纺织材料与制备技术教育部重点实验室(浙江理工大学)开放基金(2009QN02)~~
关键词
掺磷四面体非晶碳电极
纳米金团簇
过滤阴极真空电弧
电化学活性
巴多胺
生物传感器
Phosphorus incorporated tetrahedral amorphous carbon electrode
Gold nanocluster
Filtered cathodic vacuum arc
Electrochemical activity
Dopamine
Biosensors
