分析化学
分析化學
분석화학
CHINESE JOURNAL OF ANALYTICAL CHEMISTRY
2014年
9期
1240-1244
,共5页
铂-金-石墨烯纳米结构%电化学还原法%葡萄糖氧化反应%无酶生物传感器
鉑-金-石墨烯納米結構%電化學還原法%葡萄糖氧化反應%無酶生物傳感器
박-금-석묵희납미결구%전화학환원법%포도당양화반응%무매생물전감기
Platinum-gold-graphene oxide nanostructures%Electrochemical reduction method%Glucose oxidation reaction%Non-ezymatic biosensor
利用氧化石墨烯(GO)、PtCl62-、AuCl4-作为前驱体,在-0.4 V条件下,采用一步电化学还原法对GO和金属前驱体进行同时还原,成功制备了花瓣状的Pt-Au-GO纳米结构；同时利用伏安法研究了该催化剂对葡萄糖氧化的电催化性能,结果表明,此纳米结构对葡萄糖氧化反应表现出很好的电催化性能；据此构建了无酶葡萄糖传感器,该传感器在较低的电位下(-0.1 V)对葡萄糖的线性检测范围为1.0~25.0 mmol/L,响应灵敏度为26.3μA cm-2(mmol/L)-1,检出限为4.0μmol/L(S/N=3),且传感器具有很好的重现性、稳定性和选择性,可用于实际样品的分析检测。
利用氧化石墨烯(GO)、PtCl62-、AuCl4-作為前驅體,在-0.4 V條件下,採用一步電化學還原法對GO和金屬前驅體進行同時還原,成功製備瞭花瓣狀的Pt-Au-GO納米結構；同時利用伏安法研究瞭該催化劑對葡萄糖氧化的電催化性能,結果錶明,此納米結構對葡萄糖氧化反應錶現齣很好的電催化性能；據此構建瞭無酶葡萄糖傳感器,該傳感器在較低的電位下(-0.1 V)對葡萄糖的線性檢測範圍為1.0~25.0 mmol/L,響應靈敏度為26.3μA cm-2(mmol/L)-1,檢齣限為4.0μmol/L(S/N=3),且傳感器具有很好的重現性、穩定性和選擇性,可用于實際樣品的分析檢測。
이용양화석묵희(GO)、PtCl62-、AuCl4-작위전구체,재-0.4 V조건하,채용일보전화학환원법대GO화금속전구체진행동시환원,성공제비료화판상적Pt-Au-GO납미결구；동시이용복안법연구료해최화제대포도당양화적전최화성능,결과표명,차납미결구대포도당양화반응표현출흔호적전최화성능；거차구건료무매포도당전감기,해전감기재교저적전위하(-0.1 V)대포도당적선성검측범위위1.0~25.0 mmol/L,향응령민도위26.3μA cm-2(mmol/L)-1,검출한위4.0μmol/L(S/N=3),차전감기구유흔호적중현성、은정성화선택성,가용우실제양품적분석검측。
The flower-shaped Pt-Au-graphene oxide ( GO ) nanostructures were synthesized by one-step electrochemical reduction method. The electrocatalytic activities of the nanostructures toward glucose oxidation were investigated by cyclic voltammetry. The results indicated that the nanocomposites exhibited a higher electrocatalytic activity than the Pt-Au nanoparticles. A glucose nonenzyme sensor could be easily developed with the use of the flower-shaped Pt-Au-GO nanostructure. The sensor exhibited low detection limit (4. 0 μmol/L), a wide and useful linear range (1. 0-25. 0 mmol/L), and high sensitivity (26. 3 μA cm-2 ( mmol)-1 ) . In addition, the sensor exhibited excellent reproducibility, stability and selectivity for the determination of glucose, and it could be used to analyze real samples.
