PREPARATION OF CARBON NANOTUBES / PT BLACK COMPOSITE AND ITS APPLICATION FOR ELECTRO-CATALYSIS OF HYDROGEN EVOLUTION REACTION

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SHOJAIE E.; Chekin F.; FATHI SH.

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Journal: Journal of Applied Research in Chemistry Year:2018 | Volume:12 | Issue:2 Page(s): 111-118

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Title

PREPARATION OF CARBON NANOTUBES / PT BLACK COMPOSITE AND ITS APPLICATION FOR ELECTRO-CATALYSIS OF HYDROGEN EVOLUTION REACTION

Author(s)

SHOJAIE E. | Chekin F. | FATHI SH. | Issue Writer Certificate

Keywords

PLATINUM BLACKQ1

HYDROGEN EVOLUTION REACTIONQ1

ELECTROCATALYSISQ1

CARBON NANOTUBESQ1

Abstract

In this work, the CARBON NANOTUBES/PLATINUM BLACK composite was prepared by easy, efficient, and cheap method and morphology of composite was investigated by using tunnellingelectron microscopy (TEM) and energy-dispersive X-ray spectroscopy (EDX). The TEM imagesshowed that Pt was immobilized like rosary seeds on external walls of CARBON NANOTUBES and thePt in EDX spectra confirmed presence of Pt element in composite. Then catalytic activity of thisnanocomposite was investigated using carbon paste electrode modified with this nanocompositefor HYDROGEN EVOLUTION REACTION in acidic media by electrochemical methods such as linear sweepvoltammetry. The linear sweep voltammetry of Pt-CNT/CPE electrode exhibits higher currentdensity and less negative value of potential towards HYDROGEN EVOLUTION REACTION than the CPE. Effects of different parameters such as electrolyte type, electrolyte concentration, and platinumblack/carbon nanotubes ratio were studied for ELECTROCATALYSIS of HYDROGEN EVOLUTION REACTION. The results showed that sulphuric acid 0. 1 M and 2: 5 ratio was choice as optimum condition forhydrogen evolution reaction. The deposition of this nanocomposite on the electrode caused onsetpotential of-0. 2 V and the lowest Tafel slope of 4. 0 V-1 dec-1 for HYDROGEN EVOLUTION REACTION. Theelectron transfer coefficient and exchange current density for the Pt-CNT/CPE were calculated byTafel plot about 1. 3 and 0. 12 mA cm-2, respectively for HYDROGEN EVOLUTION REACTION.

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APA: Copy

SHOJAIE, E., Chekin, F., & FATHI, SH.. (2018). PREPARATION OF CARBON NANOTUBES / PT BLACK COMPOSITE AND ITS APPLICATION FOR ELECTRO-CATALYSIS OF HYDROGEN EVOLUTION REACTION. JOURNAL OF APPLIED RESEARCHES IN CHEMISTRY (JARC), 12(2 ), 111-118. SID. https://sid.ir/paper/180167/en

Vancouver: Copy

SHOJAIE E., Chekin F., FATHI SH.. PREPARATION OF CARBON NANOTUBES / PT BLACK COMPOSITE AND ITS APPLICATION FOR ELECTRO-CATALYSIS OF HYDROGEN EVOLUTION REACTION. JOURNAL OF APPLIED RESEARCHES IN CHEMISTRY (JARC)[Internet]. 2018;12(2 ):111-118. Available from: https://sid.ir/paper/180167/en

IEEE: Copy

E. SHOJAIE, F. Chekin, and SH. FATHI, “PREPARATION OF CARBON NANOTUBES / PT BLACK COMPOSITE AND ITS APPLICATION FOR ELECTRO-CATALYSIS OF HYDROGEN EVOLUTION REACTION,” JOURNAL OF APPLIED RESEARCHES IN CHEMISTRY (JARC), vol. 12, no. 2 , pp. 111–118, 2018, [Online]. Available: https://sid.ir/paper/180167/en

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