TEMPO-Functionalized Nanoporous Au Nanocomposite for the Electrochemical Detection of H2O2
Joint Authors
Kong, Jinming
Yang, Huaixia
Wen, Dongxiao
Liu, Qianrui
Cui, Ying
Source
International Journal of Analytical Chemistry
Issue
Vol. 2018, Issue 2018 (31 Dec. 2018), pp.1-11, 11 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2018-06-10
Country of Publication
Egypt
No. of Pages
11
Main Subjects
Abstract EN
A novel nanocomposite of nanoporous gold nanoparticles (np-AuNPs) functionalized with 2,2,6,6-tetramethyl-1-piperidinyloxy radical (TEMPO) was prepared; assembled carboxyl groups on gold nanoporous nanoparticles surface were combined with TEMPO by the “bridge” of carboxylate-zirconium-carboxylate chemistry.
SEM images and UV-Vis spectroscopies of np-AuNPs indicated that a safe, sustainable, and simplified one-step dealloying synthesis approach is successful.
The TEMPO-np-AuNPs exhibited a good performance for the electrochemical detection of H2O2 due to its higher number of electrochemical activity sites and surface area of 7.49 m2g-1 for load bigger amount of TEMPO radicals.
The TEMPO-functionalized np-AuNPs have a broad pH range and shorter response time for H2O2 catalysis verified by the response of amperometric signal under different pH and time interval.
A wide linear range with a detection limit of 7.8 × 10-7 M and a higher sensitivity of 110.403 μA mM-1cm-2 were obtained for detecting H2O2 at optimal conditions.
American Psychological Association (APA)
Wen, Dongxiao& Liu, Qianrui& Cui, Ying& Yang, Huaixia& Kong, Jinming. 2018. TEMPO-Functionalized Nanoporous Au Nanocomposite for the Electrochemical Detection of H2O2. International Journal of Analytical Chemistry،Vol. 2018, no. 2018, pp.1-11.
https://search.emarefa.net/detail/BIM-1166306
Modern Language Association (MLA)
Wen, Dongxiao…[et al.]. TEMPO-Functionalized Nanoporous Au Nanocomposite for the Electrochemical Detection of H2O2. International Journal of Analytical Chemistry No. 2018 (2018), pp.1-11.
https://search.emarefa.net/detail/BIM-1166306
American Medical Association (AMA)
Wen, Dongxiao& Liu, Qianrui& Cui, Ying& Yang, Huaixia& Kong, Jinming. TEMPO-Functionalized Nanoporous Au Nanocomposite for the Electrochemical Detection of H2O2. International Journal of Analytical Chemistry. 2018. Vol. 2018, no. 2018, pp.1-11.
https://search.emarefa.net/detail/BIM-1166306
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1166306