Fabrication of Cu?CeO2 Coated Multiwall Carbon Nanotube Composite Electrode for Simultaneous Determination of Guanine and Adenine
Küçük Resim Yok
Tarih
2018
Yazarlar
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Wiley-VCH Verlag
Erişim Hakkı
info:eu-repo/semantics/closedAccess
Özet
A copper nano particles and cerium (IV) oxide modified carbon nanotube based composite on glassy carbon electrode (Cu?CeO2/MWCNT/GCE) was fabricated for simultaneous determination of guanine and adenine. The surface morphology, chemistry and conductance of the prepared electrodes were characterized by scanning electron microscopy (SEM), energy dispersion X-ray (EDX), X-Ray photoelectron spectroscopy (XPS) and electrochemical impedance spectroscopy (EIS). The Cu?CeO2/MWCNT/GCE improved electrochemical behaviour of guanine and adenine compared to other electrodes. The modified electrode was also used for individual and simultaneous determination of guanine and adenine. Under optimized conditions, the calibration curves were obtained linearly in the range of 0.20 to 6.00 ?M for the guanine and 0.10 to 8.0 ?M for the adenine by differential pulse voltammetry. The limits of detection of guanine and adenine were calculated as 0.128 and 0.062 ?M, respectively. Interferences studies were also performed in the presence of inorganic and organic compounds. Moreover, the determination of guanine and adenine contents were carried out in a calf thymus DNA sample by the developed method with satisfactory results. © 2018 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim
Açıklama
Anahtar Kelimeler
adenine, guanine, metal nanoparticle, metal oxide, multiwall carbon nanotubes
Kaynak
Electroanalysis
WoS Q Değeri
Scopus Q Değeri
Q2
Cilt
30
Sayı
2
