Sustainable route of synthesis platinum nanoparticles using orange peel extract. Issue 15 (8th December 2019)

• Record Type: Journal Article
• Authors: Karim, N.A.; Rubinsin, N.J.; Burukan, M.A.A.; Kamarudin, S.K.
• Is Part Of: International journal of green energy. Volume 16:Issue 15(2019)
• Page Start: 1518
• Page End: 1526
• Publication Date: 2019-12-08
• Subjects: Green synthesis -- biosynthesis -- platinum -- TEM -- bio-reducing agent; Power resources -- Research -- Periodicals; Energy industries -- Periodicals; Energy development -- Periodicals; 333.79
• DOI: 10.1080/15435075.2019.1671422
• Languages: English
• ISSNs: 1543-5075

Abstract

ABSTRACT: Platinum is the best catalyst to promote electrochemical reactions in fuel cell. Despite the high cost of platinum, finding a cheaper, sustainable, and environmentally to produce catalyst is needed. Green synthesis has been used to produce metal nanoparticles using reducing agents drawn from natural sources. In this study, the green synthesis of platinum nanoparticles is using orange peel extract as a bio-reducing agent. The reaction to produce platinum nanoparticles is undertaken in both acidic and alkaline media and has been employed at different selected pH values. The catalyst was physically and electrochemically characterized by X-ray diffraction (XRD), energy-dispersive X-ray (EDX), transmission electron microscope (TEM), and cyclic voltammetry. The prepared platinum nanoparticles have different distributions at different pH, while the particle size of the platinum remains in the range of 1.6–4.0 nm. The platinum nanoparticles are supported on carbon black for methanol oxidation reaction. The electrochemical analysis reveals that the methanol oxidation peak of the prepared platinum supported on carbon black is at 0.9 V (vs. RHE). The synthesized platinum nanoparticles have strong potential to be used in the methanol oxidation reaction in a DMFC, as they are well distributed, but the nanoparticles need further improvement to be applied in carbon support and alloying to reduce the amount of platinum.