A glassy carbon electrode modified with graphene quantum dots and silver nanoparticles for simultaneous determination of guanine and adenine
详细信息 查看全文
- 作者：Guoying Wang ; Gaofeng Shi ; Xuefu Chen ; Ruixing Yao ; Fuwen Chen
- 关键词：Guanine ; Adenine ; Graphene quantum dots ; Silver nanoparticles ; Modified electrode
- 刊名：Microchimica Acta
- 出版年：2015
- 出版时间：January 2015
- 年：2015
- 卷：182
- 期：1-2
- 页码：315-322
- 全文大小：773 KB
- 参考文献：1. Lu CH, Yang HH, Zhu CL, Chen X, Chen GN (2009) A graphene platform for sensing biomolecules. Angew Chem Int Ed 48:4785-787 CrossRef
2. Alwarappan S, Erdem A, Liu C, Li CZ (2009) Probing the electrochemical properties of graphene nanosheets for biosensing applications. J Phys Chem C 113:8853-857 CrossRef
3. Zhang Y, Wu CY, Zhou XJ, Wu XC, Yang YQ, Wu HX, Guo SW, Zhang JY (2013) Graphene quantum dots/gold electrode and its application in living cell H2O2 detection. Nanoscale 5:1816-819 CrossRef
4. Sun HJ, Wu L, Wei WL, Qu XG (2013) Recent advances in graphene quantum dots for sensing. Mater Today 16:433-42 CrossRef
5. Shen J, Zhu Y, Yang X, Li C (2012) Graphene quantum dots: emergent nanolights for bioimaging, sensors, catalysis and photovoltaic devices. Chem Commun 48:3686-699 CrossRef
6. Li LL, Wu GH, Yang GH, Peng J, Zhao JW, Zhu JJ (2013) Focusing on luminescent graphene quantum dots: current status and future perspectives. Nanoscale?5:4015-039
7. Peng J, Gao W, Gupta BK, Liu Z, Romero-Aburto R, Ge LH, Song L, Alemany LB, Zhan XB, Gao GH, Vithayathil SA, Kaipparettu BA, Marti AA, Hayashi T, Zhu JJ, Ajayan PM (2012) Graphene quantum dots derived from carbon fibers. Nano Lett 12:844-49 CrossRef
8. Cheng HH, Zhao Y, Fan YQ, Xie XJ, Qu LT, Shi GQ (2012) Graphene quantum dot assembled nanotubes: A new platform for efficient Raman enhancement. ACS Nano 6:2237-244 CrossRef
9. Tang LB, Ji RB, Cao XK, Lin JY, Jiang HX, Li XM, Teng KS, Luk CM, Zeng SJ, Hao JH, Lau SP (2012) Deep ultraviolet photoluminescence of water-soluble self-passivated graphene quantum dots. ACS Nano 6:5102-110 CrossRef
10. Zhao J, Chen GF, Zhu L, Li GX (2011) Graphene quantum dots-based platform for the fabrication of electrochemical biosensors. Electrochem Commun 13:31-3 CrossRef
11. Gan T, Hu SS (2011) Electrochemical sensors based on graphene materials. Microchim Acta 175:1-9 CrossRef
12. Mao SX, Li WF, Long YM, Tu YF, Deng AP (2012) Sensitive electrochemical sensor of tryptophan based on Ag@C core-shell nanocomposite modified glassy carbon electrode. Anal Chim Acta 738:35-0 CrossRef
13. Rounaghi G, kakhki RM, Azizi-toupkanloo H (2012) Voltammetric determination of 4-nitrophenol using a modified carbon paste electrode based on a new synthetic crown ether/silver nanoparticles. Mater Sci Eng C 32:172-77 CrossRef
14. Wang WP, Zhou L, Wang SM, Luo Z, Hu ZD (2008) Rapid and simple determination of adenine and guanine in DNA extract by micellar electrokinetic chromatography with indirect laser-induced fluorescence detection. Talanta 74:1050-055 CrossRef
15. Zen JM, Chang MR, Ilangovan G (1999) Simultaneous determination of guanine and adenine contents in DNA, RNA and synthetic oligonucleotides using a chemically modified electrode. Analyst 124:679-84 CrossRef
16. Yang FQ, Guan J, Li SP (2007) Fast simultaneous determination of 14 nucleosides and nucleobases in cultured cordyceps using ultra- performance liquid chromatography. Talanta 73:269-73 CrossRef
17. Xiao F, Zhao FQ, Li JW, Liu LQ, Zeng BZ (2008) Characterization of hydrophobic i - 刊物类别：Chemistry and Materials Science
- 刊物主题：Chemistry
Analytical Chemistry
Inorganic Chemistry
Physical Chemistry
Characterization and Evaluation Materials
Monitoring, Environmental Analysis and Environmental Ecotoxicology - 出版者：Springer Wien
- ISSN：1436-5073
文摘
A glassy carbon electrode (GCE) was modified with graphene quantum dots (GQDs) carrying silver nanoparticles. The modified GCE displays excellent performance in the electrochemical oxidation of guanine and adenine in showing lower anodic peak overpotentials (of 0.625 and 0.929?V, respectively) and increased anodic peak currents. The effective surface area of the modified GCE is about 21.5 times larger than that of the bare GCE. The electron transfer coefficient (α) and the electron transfer number (n) were calculated to be 2 and 0.60 for guanine, and 2 and 0.64 for adenine, respectively. Linear relationships between peak current and the concentrations were obtained in the range from 0.015 to 430?μM (for guanine) and 0.015 to 390?μM (for adenine). The detection limits are 10 nM and 12 nM (at a signal-to-noise ratio of 3), respectively. The modified GCE can well distinguish between guanine and adenine in mixed solutions, has fast response, a low detection limit, good reproducibility, and high stability. Graphical Abstract A glassy carbon novel electrode modified with graphene quantum dots and silver nanoparticles was prepared. The modified electrode displays excellent performance in the electrochemical oxidation of guanine and adenine with fast response, a low detection limit, good reproducibility and stability