Enhanced electrochemical response of carbon quantum dot modified electrodes

被引：59

作者：

Algarra, M. ^{[1
]}

Gonzalez-Calabuig, A. ^{[2
]}

Radotic, K. ^{[3
]}

Mutavdzic, D. ^{[3
]}

Ania, C. O. ^{[4
]}

Lazaro-Martinez, J. M. ^{[5
]}

Jimenez-Jimenez, J. ^{[1
]}

Rodriguez-Castellon, E. ^{[1
]}

del Valle, M. ^{[2
]}

机构：

[1] Univ Malaga, Dept Quim Inorgan, Fac Ciencias, Campus Teatinos S-N, E-29071 Malaga, Spain

[2] Univ Autonoma Barcelona, Sensors & Biosensors Grp, Chem Dept, E-08193 Barcelona, Spain

[3] Univ Belgrade, Inst Multidisciplinary Res, Kneza Viseslava 1, Belgrade 11000, Serbia

[4] Univ Orleans, CEMHTI, UFR 3079, CNRS, F-45071 Orleans, France

[5] Univ Buenos Aires, IQUIFIB CONICET, Fac Farm & Bioquim, Dept Quim Organ, Junin 956, RA-1113 Buenos Aires, DF, Argentina

来源：

TALANTA | 2018年 / 178卷

关键词：

Modified electrode; Voltanunetry; Carbon dot; Nanomaterial; SOLID-STATE NMR; ASCORBIC-ACID; GRAPHENE; FLUORESCENT; REDUCTION; DOPAMINE; COMPLEX;

D O I：

10.1016/j.talanta.2017.09.082

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

A glassy carbon electrode (GCE) was surface-modified with carbon quantum dots (CQDs) and applied for the effective enhancement of the electrochemical signal for dopamine and uric acid determination. CQDs were prepared from graphite by a green modification of the Hummers method. They were characterized by FTIR-ATR, XPS, solid-state NMR, fluorescence and Raman spectroscopies. TPD-MS analysis was applied to characterize the functionalization of the surface. The CQDs were assembled on the glassy carbon electrode by adsorption because of the large number of carboxy groups on their surface warrants effective adsorption. The modified GCE exhibits a sensitivity that is almost 10 times better than of the bare GCE. The lower limits of detection are 1.3 mu M for uric acid and 2.7 mu M for dopamine.

引用

页码：679 / 685

页数：7

共 42 条

[21] A glassy carbon electrode modified with MoS2 nanosheets and poly(3,4-ethylenedioxythiophene) for simultaneous electrochemical detection of ascorbic acid, dopamine and uric acid [J].

Li, Ying ;

Lin, Hechun ;

Peng, Hui ;

Qi, Ruijuan ;

Luo, Chunhua .

MICROCHIMICA ACTA, 2016, 183 (09) :2517-2523

[22] Graphene and carbon quantum dots electrochemistry [J].

Lim, Chee Shan ;

Hola, Katerina ;

Ambrosi, Adriano ;

Zboril, Radek ;

Pumera, Martin .

ELECTROCHEMISTRY COMMUNICATIONS, 2015, 52 :75-79

[23] Carbon quantum dots and their applications [J].

Lim, Shi Ying ;

Shen, Wei ;

Gao, Zhiqiang .

CHEMICAL SOCIETY REVIEWS, 2015, 44 (01) :362-381

[24] Solid-state Studies of the Crystalline/Amorphous Character in Linear Po/y(ethylenimine hydrochloride) (PEI•HCI) Polymers and Their Copper Complexes [J].

Manuel Lazaro-Martinez, Juan ;

Rodriguez-Castellon, Enrique ;

Vega, Daniel ;

Alberto Monti, Gustavo ;

Karina Chattah, Ana .

MACROMOLECULES, 2015, 48 (04) :1115-1125

[25] A glassy carbon electrode modified with porous Cu2O nanospheres on reduced graphene oxide support for simultaneous sensing of uric acid and dopamine with high selectivity over ascorbic acid [J].

Mei, Li-Ping ;

Feng, Jiu-Ju ;

Wu, Liang ;

Chen, Jian-Rong ;

Shen, Liguo ;

Xie, Yunlong ;

Wang, Ai-Jun .

MICROCHIMICA ACTA, 2016, 183 (06) :2039-2046

[26] Multivariate curve resolution:: A possible tool in the detection of intermediate structures in protein folding [J].

Mendieta, J ;

Díaz-Cruz, MS ;

Esteban, M ;

Tauler, R .

BIOPHYSICAL JOURNAL, 1998, 74 (06) :2876-2888

[27]

Nair RR, 2012, NAT PHYS, V8, P199, DOI [10.1038/NPHYS2183, 10.1038/nphys2183]

[28] Photoluminescent carbon nanoparticles produced by confined combustion of aromatic compounds [J].

Rahy, Abdelaziz ;

Zhou, Chen ;

Zheng, Jie ;

Park, S. Y. ;

Kim, Moon J. ;

Jang, Ikjun ;

Cho, Sung June ;

Yang, Duck J. .

CARBON, 2012, 50 (03) :1298-1302

[29] Fluorescent Carbon Nanoparticles: Synthesis, Characterization, and Bioimaging Application [J].

Ray, S. C. ;

Saha, Arindam ;

Jana, Nikhil R. ;

Sarkar, Rupa .

JOURNAL OF PHYSICAL CHEMISTRY C, 2009, 113 (43) :18546-18551

[30] Block copolymer-ceramic hybrid materials from organically modified ceramic precursors [J].

Simon, PFW ;

Ulrich, R ;

Spiess, HW ;

Wiesner, U .

CHEMISTRY OF MATERIALS, 2001, 13 (10) :3464-3486

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