TY - JOUR
T1 - Gold nanoparticle within the polymer chain, a multi-functional composite material, for the electrochemical detection of dopamine and the hydrogen atom-mediated reduction of Rhodamine-B, a mechanistic approach
AU - Choudhary, Meenakshi
AU - Brink, Raugmé
AU - Nandi, Debkumar
AU - Siwal, Samarjeet
AU - Mallick, Kaushik
N1 - Funding Information:
The authors (MC, RB, DKN, SS and KM) acknowledge financial support from the Research Committee and the Faculty of Science of the University of Johannesburg. MC and KM also acknowledges financial support from the National Research Foundation, South Africa. SS and DKN further acknowledge financial support from the Global Excellence and Stature fellowship from the University of Johannesburg.
Publisher Copyright:
© 2016, Springer Science+Business Media New York.
PY - 2017/1/1
Y1 - 2017/1/1
N2 - Polymer-stabilized gold nanoparticles have been reported using an in situ chemical synthesis route where the gold nanoparticles were uniformly dispersed throughout the macromolecular chain and formed a uniform metal–polymer composite material. The surface properties of the composite material were characterized using X-ray diffraction and X-ray photoelectron spectroscopy techniques. The electron transfer resistance (ETR) value of the resultant material was measured using electrochemical impedance spectroscopy technique. By incorporating the gold nanoparticles in the polymer matrix, the ETR value of the composite material was decreased as compared with the pure polymer and showed the efficient catalytic performance for the electrochemical recognition of dopamine. The gold–polymer composite performed as a highly efficient material for the reduction of Rhodamine-B, which suggests that the reduction process was driven by the hydrogen atom transfer mechanism and catalyzed by the gold nanoparticles.
AB - Polymer-stabilized gold nanoparticles have been reported using an in situ chemical synthesis route where the gold nanoparticles were uniformly dispersed throughout the macromolecular chain and formed a uniform metal–polymer composite material. The surface properties of the composite material were characterized using X-ray diffraction and X-ray photoelectron spectroscopy techniques. The electron transfer resistance (ETR) value of the resultant material was measured using electrochemical impedance spectroscopy technique. By incorporating the gold nanoparticles in the polymer matrix, the ETR value of the composite material was decreased as compared with the pure polymer and showed the efficient catalytic performance for the electrochemical recognition of dopamine. The gold–polymer composite performed as a highly efficient material for the reduction of Rhodamine-B, which suggests that the reduction process was driven by the hydrogen atom transfer mechanism and catalyzed by the gold nanoparticles.
UR - http://www.scopus.com/inward/record.url?scp=84988328538&partnerID=8YFLogxK
U2 - 10.1007/s10853-016-0372-z
DO - 10.1007/s10853-016-0372-z
M3 - Article
AN - SCOPUS:84988328538
VL - 52
SP - 770
EP - 781
JO - Journal of Materials Science
JF - Journal of Materials Science
SN - 0022-2461
IS - 2
ER -