Synthesis of Pt/rGO catalysts with two different reducing agents and their methanol electrooxidation activity

Journal Article · Fri Jan 15 04:00:00 EST 2016 · Materials Research Bulletin

DOI:https://doi.org/10.1016/J.MATERRESBULL.2015.09.005· OSTI ID:22584262

Le, Hong Ngan Thi; Tran, Lien Thi; Nguyen, Phuong Hoa Thi; Nguyen, Minh Dang ^[1]; Quynh, Bui Ngoc ^[2]

---

1. Key Laboratory for Petrochemical and Refinery Technologies, 2 Pham Ngu Lao street, Hanoi (Viet Nam)
2. Institut de recherches sur la catalyse et l’environnement de Lyon, UMR5256, 2 avenue Albert Einstein, 69626 Villeurbanne cedex (France)

Highlights: • Pt/rGO catalysts were successfully synthesized using either NaBH{sub 4} or ethylene glycol. • Synthesis using NaBH{sub 4} could improve electrocatalytic towards methanol oxidation of Pt/rGO catalyst. • 40%Pt/rGO synthesized using NaBH{sub 4} showed the best electrocatalytic performance. - Abstract: The synthesis processes of Platinum (Pt) on reduced graphene oxide (rGO) catalysts from graphene oxide (GO) using two reducing agents including sodium borohydride and ethylene glycol is reported. Structure and morphology of Pt/rGO catalysts are characterized by X-ray powder diffraction, transmission electron microscopy, Raman spectroscopy, and X-ray photoelectron spectroscopy. Electrocatalytic methanol oxidation properties of these catalysts are evaluated by cyclic voltammetry and chronoamperometry. The results show that catalyst synthesized using sodium borohydride has a higher metallic Pt content and an improved catalytic performance in comparison to catalyst synthesized using ethylene glycol. Moreover, effect of Pt loading amount on electrocatalytic methanol oxidation performance of catalysts synthesized using sodium borohydride is systematically investigated. The optimal Pt loading amount on graphene is determined to be 40%.

• OSTI ID: 22584262
• Journal Information: Materials Research Bulletin, Journal Name: Materials Research Bulletin Vol. 73; ISSN MRBUAC; ISSN 0025-5408
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
AMPEROMETRY
BORON HYDRIDES
CARBON OXIDES
CATALYSTS
GLYCOLS
GRAPHENE
METHANOL
MORPHOLOGY
NANOSTRUCTURES
OXIDATION
PLATINUM
RAMAN SPECTROSCOPY
SODIUM COMPOUNDS
TRANSMISSION ELECTRON MICROSCOPY
VOLTAMETRY
X-RAY DIFFRACTION
X-RAY PHOTOELECTRON SPECTROSCOPY