Title
Reduced Graphene Oxide Decorated Au Nanoparticles as an Efficient Electrode for the Determination of Hydroquinone
Authors
Selvamani Arumugam,a Babu Cadiam Mohan,b Ramkumar Vanarajc and B. Sundaravel*d
aChemical Engineering Area, Council of Scientific & Industrial Research-Central Leather Research Institute, Adyar, Chennai-600020, India
bDepartment of Chemical Engineering, Hanseo University, South Korea
cDepartment of Polymer Science and Technology, Council of Scientific & Industrial Research-Central Leather Research Institute, Adyar, Chennai-600020, India
dDepartment of Chemistry, Kalasalingam Academy of Research and Education, Krishnan Kovil, Tamil Nadu 626126, India
*Corresponding Author Email Address : sundar.chem.bala@gmail.com (B. Sundaravel)*d
Article History
Published details: Received: 7th February 2019, Revised: 13th February 2019, Accepted: 14th February 2019, Published: 18th February 2019
Cite this article
Selvamani A.; Babu C. M.; Ramkumar V.; Sundaravel B. Reduced Graphene Oxide Decorated Au Nanoparticles as an Efficient Electrode for the Determination of Hydroquinone. Nano Prog., 2019, 1(1), 10-15.
Abstract
In order to fabricate the novel working electrode, reduced graphene oxide was decorated with gold nanoparticles in various weight percentages which designated as rGO(x)-AuNPs/GCE (x= 2, 5 and 8 wt. %). As synthesized rGO-AuNPs was extensively analyzed by various characterization techniques such as XRD, DRUV-Vis, FT-IR and HRTEM. These results were clearly suggested that formation of strong chemical interaction between rGO and AuNPs in the synthesized materials. Hydroquinone (HQ) analysis via electrochemical method was carried out on rGO(x)-AuNPs/GCE as a working electrode using cyclic voltammetry, and electrochemical behaviors of HQ were thoroughly investigated with a pair of redox peaks. This result demonstrates that electrocatalytic ability on the redox reaction of HQ was exclusively presented on rGO(x)-AuNPs/GCE with 5 wt. % of rGO due to high surface area, high electron conductibility and fine dispersion. A linear response between peak current and HQ concentration was exhibited in the range of 0.2 to 800.0 μmol L-1, and also detection limit of HQ was found to be 8.85×10-8 mol L-1.
Keywords
Graphene; Au-nanoparticles; Hydroquinone; Cyclic voltammetry; Redox peaks
