Green synthesis of Pt nanoparticles using Keggin and Dawson heteropolyacids and preparation of their composites with carbon nanotubes
نویسنده:
, , , , , ,سال
: 2014
چکیده: In this paper, a facile green chemistry method was applied to synthesize platinum nanoparitcles (Pt NPs) using two types of heteropolyacids, Keggin and Dawson. Heteropolyacids play a crucial role, acting as reducing agent and also an efficient stabilizer under UV irradiation in this procedure. The main goal of our project was to control the shape and minimizing the size of Pt NPs by changing parameters such as time and concentration ratio of heteropolyacids to platinum ions. In both cases, the uniform sphere shape of Pt NPs with narrow size distribution was achieved. The smallest size of Pt NPs obtained by using Keggin was 2nm, while the minimum size of particles using Dawson was about 18nm. Then, Pt NPs with 2 nm average size was decorated on the functionalized multiwall carbon nanotubes and characterized by XRD, FTIR and TEM. The synthesized nanocomposite is promising to show high electrocatalytic activity in methanol oxidation which is expected due to the unique properties of Pt NPs, heteropolyacids and multiwall carbon nanotubes.
کلیدواژه(گان): Green synthesis,Platinum nanoparticles,Heteropolyacid,Nanocomposite
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:
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Green synthesis of Pt nanoparticles using Keggin and Dawson heteropolyacids and preparation of their composites with carbon nanotubes
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contributor author | فاطمه احمدی حکمتی کار | en |
contributor author | علی احمدپور | en |
contributor author | محمدتقی حامدموسویان | en |
contributor author | F.F Bamoharram | en |
contributor author | Fatemeh Ahmadi hekmati kar | fa |
contributor author | Ali Ahmadpour | fa |
contributor author | Mohammad Taghi Hamed Mosavian | fa |
date accessioned | 2020-06-06T14:17:12Z | |
date available | 2020-06-06T14:17:12Z | |
date copyright | 3/6/2014 | |
date issued | 2014 | |
identifier uri | http://libsearch.um.ac.ir:80/fum/handle/fum/3390174 | |
description abstract | In this paper, a facile green chemistry method was applied to synthesize platinum nanoparitcles (Pt NPs) using two types of heteropolyacids, Keggin and Dawson. Heteropolyacids play a crucial role, acting as reducing agent and also an efficient stabilizer under UV irradiation in this procedure. The main goal of our project was to control the shape and minimizing the size of Pt NPs by changing parameters such as time and concentration ratio of heteropolyacids to platinum ions. In both cases, the uniform sphere shape of Pt NPs with narrow size distribution was achieved. The smallest size of Pt NPs obtained by using Keggin was 2nm, while the minimum size of particles using Dawson was about 18nm. Then, Pt NPs with 2 nm average size was decorated on the functionalized multiwall carbon nanotubes and characterized by XRD, FTIR and TEM. The synthesized nanocomposite is promising to show high electrocatalytic activity in methanol oxidation which is expected due to the unique properties of Pt NPs, heteropolyacids and multiwall carbon nanotubes. | en |
language | English | |
title | Green synthesis of Pt nanoparticles using Keggin and Dawson heteropolyacids and preparation of their composites with carbon nanotubes | en |
type | Conference Paper | |
contenttype | External Fulltext | |
subject keywords | Green synthesis | en |
subject keywords | Platinum nanoparticles | en |
subject keywords | Heteropolyacid | en |
subject keywords | Nanocomposite | en |
identifier link | https://profdoc.um.ac.ir/paper-abstract-1046182.html | |
conference title | 5th International Conference on NanoStructures (ICNS5) | en |
conference location | کیش | fa |
identifier articleid | 1046182 |