Electrocatalytic Oxidation of Hydrogen Peroxide at a Glassy Carbon Electrode Modified with Platinum-decorated Carbon Nanotubes

Abstract

Abstract: A chemical vapour deposit(CVD) method was used for decoration nano-platinum particles onto carbon nanotube surface. A glassy carbon electrode modified with platinum-decorated carbon nanotube(CNT-Pt/GCE) was prepared. The electrochemical oxidation of hydrogen peroxide(H₂O₂) was studied on this modified electrode. The rate constant k s of the electro-oxidation reaction was obtained from kinetic equations. The k s at CNT-Pt /GCE was 2.65 times of that at Pt electrode, which shows good catalytic activities for electro-oxidation of H₂O₂ in phosphate buffer medium. The mechanism of the electro-oxidation reactions was proposed. This modified electrode can be used to fabricate biosensors based on oxidase.

Key words: Nano-platinum particles, Carbon nanotubes, Electrocatalytic-oxidation, Hydrogen peroxide

CLC Number:

O657

TrendMD:

ZHU Yu-Nu, PENG Tu-Zhi, LI Jian-Ping . Electrocatalytic Oxidation of Hydrogen Peroxide at a Glassy Carbon Electrode Modified with Platinum-decorated Carbon Nanotubes[J]. Chem. J. Chinese Universities, 2004, 25(9): 1637.

References

[1] 　Bessel C.A.,L aubernd s K.,Rod riguez N.M.et al..J.Phys.Chem.B[J],2001,105:1115—1118 [2] 　L I Xu-Guang(李旭光),X IN W ei(邢　巍),YAN G H u i(杨　辉)et al..Ch inese J.A nal.Chem.(分析化学)[J],2002,30:788—791 [3] 　M ak sim ov Y.M.,Pod lovchenko B.I.,A zarchenko T.L..E lectroch im ica A cta[J],1998,43:1053—1059 [4] 　A ng L.M.,Ho r T.S.A.,Xu G.Q.et al..Carbon[J],2000,38:363—372 [5] 　Zhang Y.,F rank lin N.W.,Chen R.J.et al..Chem.Physics L ett.[J],2000,331:35—41 [6] 　Chen X.,X ia J.,Peng J.et al..Com po s.Sc.iT echno l.[J],2000,60:301—306 [7] 　Zhang Y.,Zhang Q.,L i Y.et al..So lid State Comm un.[J],2000,115:51—55 [8] 　J iang Q.,Zhou X.H.,W en Z..A p llied Su rface Science[J],2002,195:38—41 [9] 　Kong F.Z.,Zhang X.B.,X iong W.Q.et al..Su rface Coating s T echno l.[J],2002,155:33—36 [10] 　B ritto P.J.,San thanam K.S.V.,A jayan P.M..B ioelectrochem.B ioenerg.[J],1996,41:121—125 [11] 　D avis J.J.,Co les R.J.,H ill H.A.O..J.E lectroanal.Chem.[J],1997,440:279—282 [12] 　D avis J.J.,Green M.L.H.,H ill H.A.O.et al..Ino rg.Ch im.A cta[J],1998,272:261—266 [13] 　W ang G.,Xu J.J.,Chen H.Y..E lectrochem.Comm un.[J],2002,4(6):506—509 [14] 　L iu C.Y.,Bard A.J.,W ud l F.et al..E lectrochem.So lid State L ett.[J],1999,2(11):577—578 [15] 　LU O Hong-X ia(罗红霞),SH I Zu-J in(施祖进),L I N an-Q iang(李南强)et al..Chem.J.Ch inese U n iversities(高等学校化学学报)[J],2000,21(9):1372—1374 [16] 　L uo H.X.,Sh i Z.J.,L i N.Q.et al..A nal.Chem.[J],2001,73:915—920 [17] 　W ang J.,L iM.,Sh i Z.et al..E lectroch im.A cta[J],2001,47:651—657 [18] 　CH EN Rong-Sheng(陈荣生),X IAO H ua(肖　华),HU AN G W ei-H ua(黄卫华)et al..Chem.J.Ch inese U n iversities(高等学校化学学报)[J],2003,24(5):808—810 [19] 　W AN G Zong-H ua(王宗花),LU O Guo-A n(罗国安),X IAO Su-Fang(肖素芳)et al..Chem.J.Ch inese U n iversities(高等学校化学学报)[J],2003,24(5):811—813 [20] 　L i J.,T an S.N.,Ge H..A nal.Ch im.A cta[J],1996,335:137—138 [21] 　CH EN J un-Feng(陈军峰),XU Cai-L u(徐才录),M AO Zong-Q iang(毛宗强)et al..Science in Ch ina,Series A(中国科学,A辑)[J],2001,31:529—533 [22] 　CH EN J un-Feng(陈军峰),XU Cai-L u(徐才录),M AO Zong-Q iang(毛宗强)et al..Ch inese Sc.iBu lletin(科学通报)[J],1999,44:1154—1157 [23] 　H ick ling A.,W ilson W..J.E lectrochem.Soc.[J].1951,98:425—426 [24] 　Go rton L..A nal.Ch im.A cta[J].1985,178:247—248 [25] 　Bard A.J.,Fau lkner L.R.;T ran slated by Gu L in-Y ing(谷林瑛),LüM ing-X iang(吕鸣祥),Song Sh i-Zhe(宋诗哲)et al..E lectrochem icalM ethod s:Fundam en tals and A pp lication s(电化学方法:原理及应用)[M],Beijing:Chem ical Indu stry P ress,1986:258