制备了用于测定邻苯二酚(CAT)的石墨烯修饰电极,并应用循环伏安法研究了CAT在该修饰电极上的电化学行为;用差分脉冲伏安法研究了测试底液的pH值对该修饰电极性能的影响,结果表明,此修饰电极在含不同浓度CAT的PBS溶液(pH=7.0)中测定,响应电流与CAT浓度在5.0×10-8～5.6×10-4 mol/L范围内有良好的线性关系,相关系数r =0.9919,检出限为6.68 ×10-9 mol/L( S/N=3).与其它几种修饰电极相比,石墨烯修饰电极制备简单、响应时间快、操作简便,稳定性和重现性良好,有应用价值.
参考文献
| [1] | Zhang S,Zhao H,John R A.Dual-phase Biosensing System for the Determination of Phenols in Both Aqueous and Organic Media[J].Anal Chim Acta,2001,441 (1):95-105. |
| [2] | LUO Qimei,LIU Dengyou,WANG Huixian,et al.Electrochemical Determination of Catechol with Nano-gold/carbon Nanotubes Modified Graphite Electrode[J].Chinese J Environ Sci,2010,30(10):1349-1352(in Chinese).罗启枚,刘登友,王辉宪,等.纳米金/碳纳米管修饰石墨电极测定邻苯二酚[J].中国环境科学,2010,30(10):1349-1352. |
| [3] | WU Fanghui,ZHAO Guangchao,WEI Xianwen.Electrocatalytic Activity of Multi-walled Carbon Nanotubes Modified Electrode for P-benzenediol[J].Chinese J Anal Chem,2004,32(8):1057-1060(in Chinese).吴芳辉,赵广超,魏先文.多壁碳纳米管修饰电极对对苯二酚的电催化作用[J].分析化学,2004,32(8):1057-1060. |
| [4] | QIAN Gongming,YANG Changzhu,ZHANG Jingdong.The Electrochemical Behavior and Detection of Catechol on Nanoplatinum Modified Glassy Carbon Electrode[J].J Anal Sci,2010,26 (1):83-86 (in Chinese).钱功明,杨昌柱,张敬东.纳米铂修饰玻碳电极对邻苯二酚的电化学氧化及测定[J].分析科学学报,2010,26(1):83-86. |
| [5] | Li N,Xue M H,Yao H,et al.Reagentless Biosensor for Phenolic Compounds Based on Tyrosinase Entrapped within Gelatine Film[J].Anal Bioanal Chem,2005,383:1127-1132. |
| [6] | Sani S,Muhid M N M,Hamdan H.Design,Synthesis and Activity Study of Tyrosinase Encapsulated Silica Aerogel (TESA) Biosensor for Phenol Removal in Aqueous Solution[J].J Sol-Gel Sci Technol,2011,59:7-18. |
| [7] | Umasankar Y,Periasamy A P,Chen S M.Electrocatalysis and Simultaneous Determination of Catechol and Quinol by Poly (malachite green) Coated Muhiwalled Carbon Nanotube Film[J].Anal Biochem,2011,411 (1):71-79. |
| [8] | Tan Y Y,Guo X X,Zhang J H,et al.Amperometric Catechol Biosensor Based on Polyaniline Polyphenol Oxidase[J].Biosens Bioelectron,2010,25 (7):1681-1687. |
| [9] | Portaccioa M,Tuoroa D Di,Arduinib F,et al.A Thionine-Modified Carbon Paste Amperometric Biosensor for Catechol and Bisphenol A Determination[J].Biosens Bioelectron,2010,25 (9):2003-2008. |
| [10] | Geim A K,Novoselov K S.The Rise of Graphene[J].Nat Mater,2007,3(6):183-191. |
| [11] | Novoselov K S,Jiang D,Schedin F.Two Dimensional Atomic Crystals[J].Proc Natl Acad Sci USA,2005,102 (30):10451-10453. |
| [12] | Zheng Y Q,Yang C Z,Pu w H,et al.Carbon Nanotube-based DNA Biosensor for Monitoring Phenolic Pollutants[J].Microchim Acta,2009,166(1/2):21-26. |
| [13] | Shen C S,Yang H F,Song J F,et al.Direct Electrochemistry of Glucose Oxidase and Biosensing for Glucose Based on Graphene[J].Anal Chem,2009,81 (6):2378-2382. |
| [14] | Wang Y,Li Y M,Tang L H,et al.Application of Graphene-Modified Electrode for Selective Detection of Dopamine[J].Electrochem Commun,2009,11 (4):889-892. |
| [15] | Schedin F,Geim A K,Morozov S V,et al.Detection of Individual Gas Molecules Adsorbed on Graphene[J].Nat Mater,2007,6(9):652-655. |
| [16] | Fu C L,Yang W S,Chen X,et al.Direct Electrochemistry of Glucose Oxidase on a Graphite Nanosheet-Nafion Composite Film Modified Electrode[J].Electrochem Commun,2009,11 (5):997-1000. |
| [17] | MA Wenshi,ZHOU Junwen.Preparation of A Dispersible Graphene[J].Chem J Chinese Univ,2010,31 (10):1982-1986(in Chinese).马文石,周俊文.一种可分散性石墨烯的制备[J].高等学校化学学报,2010,31 (10):1982-1986. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%