A Highly Sensitive Ascorbic Acid Sensor Based on Graphene Oxide/CdTe Quantum Dots-Modified Glassy Carbon Electrode

被引:19
作者
Kucukkolbasi, S. [1 ]
Erdogan, Z. O. [1 ]
Baslak, C. [1 ]
Sogut, D. [1 ]
Kus, M. [2 ]
机构
[1] Selcuk Univ, Fac Sci, Dept Chem, TR-42075 Konya, Turkey
[2] Selcuk Univ, Fac Engn, Dept Chem Engn, TR-42075 Konya, Turkey
关键词
quantum dots; ascorbic acid; chemically modified electrodes; graphene oxide; electrochemical sensor; SIMULTANEOUS VOLTAMMETRIC DETERMINATION; URIC-ACID; DOPAMINE; NANOTUBE; BIOSENSOR; CDSE;
D O I
10.1134/S1023193519010051
中图分类号
O646 [电化学、电解、磁化学];
学科分类号
081704 ;
摘要
Quantum dots (QDs) and graphene oxide (GO) are extremely attractive and important nanomaterials in analytical applications because of their their unusual chemical, physical and electronic properties. In this work, CdTe QDs with the size of about 3 nm were prepared and a novel electrochemical sensing material of ascorbic acid on GO/CdTe QDs/GC electrode was explored. Transmission electron microscopy (TEM) was used to examine the morphological characterization of CdTe QDs and cyclic voltammetry (CV) and electrochemical impedance spectroscopy were used to perform the electrochemical investigations of the GO/CdTe QDs/GC electrode. Because of the synergy between the CdTe QDs and GO, this novel sensing based on CdTe QDs/GO/GC electrode responded even more sensitively and selectively than that based on bare GC electrode. Effects of pH value, buffer concentration, deposition potential and deposition time and electroactive interferents on the response of GO/CdTe QDs/GC electrode for ascorbic acid sensor were discussed. Under optimum working conditions, a linear response of the modified electrode was obtained over the concentration range of 32.3-500.0 mu M with the detection limit of 6.1 mu M for ascorbic acid. Finally, the inexpensive, reliable and sensitive modified electrode based on GO/CdTe QDs/GC was succesfully applied for the determination of ascorbic acid in citrus samples.
引用
收藏
页码:107 / 114
页数:8
相关论文
共 42 条
[11]   Electrochemical determination of ascorbic acid, dopamine and uric acid based on an exfoliated graphite paper electrode: A high performance flexible sensor [J].
Cai, Weihua ;
Lai, Ting ;
Du, Haijun ;
Ye, Jianshan .
SENSORS AND ACTUATORS B-CHEMICAL, 2014, 193 :492-500
[12]   Graphene and tricobalt tetraoxide nanoparticles based biosensor for electrochemical glutamate sensing [J].
Dalkiran, Berna ;
Erden, Pinar Esra ;
Kilic, Esma .
ARTIFICIAL CELLS NANOMEDICINE AND BIOTECHNOLOGY, 2017, 45 (02) :340-348
[13]   Amperometric xanthine biosensors based on chitosan-Co3O4-multiwall carbon nanotube modified glassy carbon electrode [J].
Dalkiran, Berna ;
Kacar, Ceren ;
Erden, Pinar Esra ;
Kilic, Esma .
SENSORS AND ACTUATORS B-CHEMICAL, 2014, 200 :83-91
[14]   Novel electrochemical sensor based on N-doped carbon nanotubes and Fe3O4 nanoparticles: Simultaneous voltammetric determination of ascorbic acid, dopamine and uric acid [J].
Fernandes, Diana M. ;
Costa, Marta ;
Pereira, Clara ;
Bachiller-Baeza, Belen ;
Rodriguez-Ramos, Inmaculada ;
Guerrero-Ruiz, Antonio ;
Freire, Cristina .
JOURNAL OF COLLOID AND INTERFACE SCIENCE, 2014, 432 :207-213
[15]   Determination of ascorbic acid in a mixture of ascorbic acid and uric acid at a chemically modified electrode [J].
Gao, ZQ ;
Siow, KS ;
Ng, A ;
Zhang, YM .
ANALYTICA CHIMICA ACTA, 1997, 343 (1-2) :49-57
[16]   A new voltammetric sensor for electrocatalytic determination of vitamin C in fruit juices and fresh vegetable juice using modified multi-wall carbon nanotubes paste electrode [J].
Gheibi, Siamak ;
Karimi-Maleh, Hassan ;
Khalilzadeh, Mohammad A. ;
Bagheri, Hasan .
JOURNAL OF FOOD SCIENCE AND TECHNOLOGY-MYSORE, 2015, 52 (01) :276-284
[17]  
Grotzkyj GM, 2012, SCI WORLD J, V2012, P8
[18]   Multiwall carbon nanotube modified glassy carbon electrode as voltammetric sensor for the simultaneous determination of ascorbic acid and caffeine [J].
Gupta, Vinod Kumar ;
Jain, Ajay Kumar ;
Shoora, Sudhir Kumar .
ELECTROCHIMICA ACTA, 2013, 93 :248-253
[19]   A novel nonenzymatic hydrogen peroxide sensor based on Ag-MnO2-MWCNTs nanocomposites [J].
Han, Yang ;
Zheng, Jianbin ;
Dong, Sheying .
ELECTROCHIMICA ACTA, 2013, 90 :35-43
[20]   PREPARATION OF GRAPHITIC OXIDE [J].
HUMMERS, WS ;
OFFEMAN, RE .
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1958, 80 (06) :1339-1339