利用恒电流电沉积法,制备出金纳米颗粒修饰钛电极(Au/Ti).利用循环伏安、电位阶跃等电化学技术,研究了碱性溶液中Au/Ti电极对葡萄糖氧化的电催化活性.与多晶金电极相比,葡萄糖在Au/Ti电极上氧化的起始电位更低、电流密度明显增加.实验表明,Au/Ti电极对葡萄糖氧化具有很高的电催化活性.对葡萄糖在Au/Ti电极上的双电位阶跃分析表明,葡萄糖在0.1 ml/L NaOH溶液中的电化学氧化反应速率常数为5.79×104cm3/(mol.s).
A gold nanoparticle modified titanium electrode (Au/Ti) was fabricated by chronopotentiometric tech-nique. With electrochemical techniques, such as circulation volt-ampere, potential step and so on, the electrocatalyt-ic activity of the Au/Ti electrode towards glucose oxidation in alkaline solutions was examined. Compared to polycrys-talline Au electrode, Au/Ti presents a lower onset potential and a considerably higher current density for the glucose oxidation, showing high electroactivity of the Au/Ti for the glucose oxidation. Analysis for the double-step chrono-amperograms of glucose on the Au/Ti indicated that the rate constant of the glucose electrooxidation in 0.1 mol/L NaOH solutions was 5.79×104 cm3/(mol·s).
参考文献
| [1] | Abbadi A;Bekkum H .Effect of pH in the Pt-catalyzed oxidation of D-glucose to D-gluconic acid[J].Journal of Molecular Catalysis A:Chemical,1995,97(02):111-118. |
| [2] | Warnmer H;Robinson B W.A glucosefuel cell[A].Stockholm:Ljunglofs litografiska,1967:520-531. |
| [3] | Qiu JD;Zhou WM;Guo J;Wang R;Liang RP .Amperometric sensor based on ferrocene-modified multiwalled carbon nanotube nanocomposites as electron mediator for the determination of glucose[J].Analytical Biochemistry: An International Journal of Analytical and Preparative Methods,2009(2):264-269. |
| [4] | Wan B Y C;Tseung A C C .Some studies related to electricity generation from biological fuel cells and galvanic ceils,in vitro and in vivo[J].Medical and Biological Engineering and Computing,1974,12:14-28. |
| [5] | Habrioux A;Sihert E;Servat K .Activity of Platinum-Gold Alloys for Glucose Electrooxidation in Biofuel Cells[J].Journal of Physical Chemistry B,2007,111:10 329-10 333. |
| [6] | Drake R F;Kusserow B K;Messinger S .Tissue implantable fuel cell power supply[J].Trans Am Soc Artff Intem Organs,1970,16:199-205. |
| [7] | Wolfson S K;Yao S J;Goisel A et al.Single electrolyte fuel cell utilizing permselective membranes[40 mu W output;fueled with glucose][J].Transactions of the American Society for Artificial Internal Organs,1970,16:193-198. |
| [8] | Caifeng D;Fei Z;Rui R et al.An electrochemical biosensor for αfetoprotein based on carbon paste electrode constructed of room temperature ionic liquid and gold nanoparictes[J].Talanta,2009,78:1148-1154. |
| [9] | Caifeng Nan;Yan Zhang;Guomei Zhang .Activation of nylon net and its application to a biosensor for determination of glucose in human serum[J].Enzyme and Microbial Technology,2009(5):249-253. |
| [10] | Xu, XL;Zhou, GL;Li, HX;Liu, Q;Zhang, S;Kong, JL .A novel molecularly imprinted sensor for selectively probing imipramine created on ITO electrodes modified by Au nanoparticles[J].Talanta,2009(1):26-32. |
| [11] | Santhosh, P;Manesh, KM;Uthayakumar, S;Komathi, S;Gopalan, AI;Lee, KP .Fabrication of enzymatic glucose biosensor based on palladium nanoparticles dispersed onto poly(3,4-ethylenedioxythiophene) nanofibers[J].Bioelectrochemistry,2009(1):61-66. |
| [12] | Wieczorek, B;Dijkstra, HP;Egmond, MR;Gebbink, RJMK;van Koten, G .Incorporating ECE-pincer metal complexes as functional building blocks in semisynthetic metalloenzymes, supramolecular polypeptide hybrids, tamoxifen derivatives, biomarkers and sensors[J].Journal of Organometallic Chemistry,2009(6):812-822. |
| [13] | Benvenuto, P;Kafi, AKM;Chen, AC .High performance glucose biosensor based on the immobilization of glucose oxidase onto modified titania nanotube arrays[J].Journal of Electroanalytical Chemistry,2009(1/2):76-81. |
| [14] | Atanu Mitra;Balaji Ramanujam;Chebrolu P.Rao .1-(D-Glucopyranosyl-2-deoxy-2'-iminomethyl)-2-hydroxynaphthalene as chemo-sensor for Fe~(3+)in aqueous HEPES buffer based on colour changes observable with the naked eye[J].Tetrahedron letters: The International Journal for the Rapid Publication of Preliminary Communications in Organic Chemistry,2009(7):776-780. |
| [15] | Masato T;Toshihiro S;Makoto N .Electrocatalytic oxidation of glucose at gold-silver alloy,silver and goht nanoparticles in an alkaline solution[J].Journal of Electroanalytical Chemistry,2006,590:37-46. |
| [16] | Yi Q F;Li L;Yu W Q;el al .Hydrothermal synthesis of titaniumsupported PtlrRu/Ti electrode and its electrocatalytic activity[J].Journal of Alloys and Compounds,2007,466:52-58. |
| [17] | Yi-Shiun Chen;Chi-Chang Hu;Yung-Tai Wu .Capacitive and textural characteristics of manganese oxide prepared by anodic deposition: effects of manganese precursors and oxide thickness[J].Journal of solid state electrochemistry,2004(7):467-473. |
| [18] | Takuya Shinomiya;Vinay Gupta;Norio Miura .Effects of electrochemical-deposition method and microstructure on the capacitive characteristics of nano-sized manganese oxide[J].Electrochimica Acta,2006(21):4412-4419. |
| [19] | 阿伦 J 巴德;拉里 R 福克纳;邵员华;董献堆,张柏林.电化学方法原理和应用[M].北京:化学工业出版社,2005:211-228. |
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%