Electrochemical preparation and characterization of gold-polyaniline core-shell nanocomposites on highly oriented pyrolytic graphite
A simple electrochemical method for the in situ preparation of homogeneously dispersed gold-polyaniline core/shell nanocomposite particles with controlled size on the highly oriented pyrolytic graphite（HOPG）was demonstrated.The HOPG surface was modified preferentially by covalent bonding of a two-di...
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| Published in | Transactions of Nonferrous Metals Society of China Vol. 20; no. 12; pp. 2314 - 2319 |
|---|---|
| Main Author | |
| Format | Journal Article |
| Language | English |
| Published |
Elsevier Ltd
01.12.2010
Xiangya Hospital, Central South University, Changsha 410008, China State Key Laboratory of Powder Metallurgy, Central South University, Changsha 410083, China%State Key Laboratory of Powder Metallurgy, Central South University, Changsha 410083, China%Xiangya Hospital, Central South University, Changsha 410008, China |
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| Online Access | Get full text |
| ISSN | 1003-6326 |
| DOI | 10.1016/s1003-6326(10)60647-4 |
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| Abstract | A simple electrochemical method for the in situ preparation of homogeneously dispersed gold-polyaniline core/shell nanocomposite particles with controlled size on the highly oriented pyrolytic graphite（HOPG）was demonstrated.The HOPG surface was modified preferentially by covalent bonding of a two-dimensional 4-aminophenyl monolayer employing diazonium chemistry.AuCl4 -ions were attached to the Ar-NH2 termination and reduced electrochemically.This results in the formation of Au nuclei that could be further grown into gold nanoparticles.The formation of polyaniline as the shell wrap of Au nanoparticle was established by localized electro-polymerization.These core-shell nanocomposites prepared were characterized by AFM and cyclic voltammetry.The results show that the gold-polyaniline core-shell composites on HOPG have a mean particle size of 100 nm in diameter and the polyaniline shell thickness is about 15 nm. |
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| AbstractList | A simple electrochemical method for the in situ preparation of homogeneously dispersed gold-polyaniline core/shell nanocomposite particles with controlled size on the highly oriented pyrolytic graphite（HOPG）was demonstrated.The HOPG surface was modified preferentially by covalent bonding of a two-dimensional 4-aminophenyl monolayer employing diazonium chemistry.AuCl4 -ions were attached to the Ar-NH2 termination and reduced electrochemically.This results in the formation of Au nuclei that could be further grown into gold nanoparticles.The formation of polyaniline as the shell wrap of Au nanoparticle was established by localized electro-polymerization.These core-shell nanocomposites prepared were characterized by AFM and cyclic voltammetry.The results show that the gold-polyaniline core-shell composites on HOPG have a mean particle size of 100 nm in diameter and the polyaniline shell thickness is about 15 nm. A simple electrochemical method for the in situ preparation of homogeneously dispersed gold-polyaniline core/shell nanocomposite particles with controlled size on the highly oriented pyrolytic graphite (HOPG) was demonstrated. The HOPG surface was modified preferentially by covalent bonding of a two-dimensional 4-aminophenyl monolayer employing diazonium chemistry. AuCl 4 − ions were attached to the Ar-NH 2 termination and reduced electrochemically. This results in the formation of Au nuclei that could be further grown into gold nanoparticles. The formation of polyaniline as the shell wrap of Au nanoparticle was established by localized electro-polymerization. These core-shell nanocomposites prepared were characterized by AFM and cyclic voltammetry. The results show that the gold-polyaniline core-shell composites on HOPG have a mean particle size of 100 nm in diameter and the polyaniline shell thickness is about 15 nm. A simple electrochemical method for the in situ preparation of homogeneously dispersed gold-polyaniline core/shell nanocomposite particles with controlled size on the highly oriented pyrolytic graphite (HOPG) was demonstrated. The HOPG surface was modified preferentially by covalent bonding of a two-dimensional 4-aminophenyl monolayer employing diazonium chemistry. AuCl sub(4) super(-) ions were attached to the Ar-NH sub(2) termination and reduced electrochemically. This results in the formation of Au nuclei that could be further grown into gold nanoparticles. The formation of polyaniline as the shell wrap of Au nanoparticle was established by localized electro-polymerization. These core-shell nanocomposites prepared were characterized by AFM and cyclic voltammetry. The results show that the gold-polyaniline core-shell composites on HOPG have a mean particle size of 100 nm in diameter and the polyaniline shell thickness is about 15 nm. TG1; A simple electrochemical method for the in situ preparation of homogeneously dispersed gold-polyaniline core/shell nanocomposite particles with controlled size on the highly oriented pyrolytic graphite (HOPG) was demonstrated. The HOPG surface was modified preferentially by covalent bonding of a two-dimensional 4-aminophenyl monolayer employing diazonium chemistry. AuCl4- ions were attached to the Ar-NH2 termination and reduced electrochemically. This results in the formation of Au nuclei that could be further grown into gold nanoparticles. The formation of polyaniline as the shell wrap of Au nanoparticle was established by localized electro-polymerization. These core–shell nanocomposites prepared were characterized by AFM and cyclic voltammetry. The results show that the gold-polyaniline core-shell composites on HOPG have a mean particle size of 100 nm in diameter and the polyaniline shell thickness is about 15 nm. |
| Author | 李年丰 雷霆 刘咏 贺跃辉 张阳德 |
| AuthorAffiliation | Xiangya Hospital, Central South University, Changsha 410008, China State Key Laboratory of Powder Metallurgy, Central South University, Changsha 410083, China |
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| CitedBy_id | crossref_primary_10_1007_s10008_011_1494_5 crossref_primary_10_1007_s10008_013_2371_1 crossref_primary_10_1016_j_matlet_2012_11_054 crossref_primary_10_1016_j_nimb_2013_08_033 crossref_primary_10_1016_j_synthmet_2012_05_027 crossref_primary_10_1021_la500001j crossref_primary_10_2116_analsci_31_1075 crossref_primary_10_1016_j_electacta_2018_09_083 crossref_primary_10_1016_j_progpolymsci_2017_04_002 crossref_primary_10_1016_j_synthmet_2014_05_012 crossref_primary_10_1016_j_micron_2012_02_004 crossref_primary_10_4028_www_scientific_net_AMR_347_353_3302 |
| Cites_doi | 10.1007/s10008-005-0021-y 10.1016/S0013-4686(99)00224-8 10.1021/la981641z 10.1016/S0022-0728(01)00344-8 10.1021/ac00109a045 10.1016/S1003-6326(07)60274-X 10.1016/j.matlet.2006.10.032 10.1002/1521-4109(200010)12:14<1085::AID-ELAN1085>3.0.CO;2-A 10.1016/0022-0728(95)04175-3 10.1016/0022-0728(93)87035-T 10.1021/la9507390 10.1039/b406228k 10.1016/j.electacta.2006.07.051 10.1016/S0013-4686(00)00455-2 10.1021/jp026496j 10.1080/01614949708006469 10.1016/j.matchemphys.2005.01.011 10.1021/cm050193v 10.1021/ac00058a014 10.1016/j.electacta.2005.12.057 10.1021/la970931x 10.1149/1.1837736 |
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| Keywords | polyaniline gold nanoparticles nanocomposites highly oriented pyrolytic graphite (HOPG) core-shell structure |
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| Notes | core-shell structure; nanocomposites; polyaniline; gold nanoparticles; highly oriented pyrolytic graphite（HOPG） 43-1239/TG gold nanoparticles TB332 polyaniline highly oriented pyrolytic graphite（HOPG） nanocomposites O633.21 core-shell structure ObjectType-Article-2 SourceType-Scholarly Journals-1 ObjectType-Feature-1 content type line 23 |
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| SubjectTerms | core-shell structure Covalence Gold gold nanoparticles highly oriented pyrolytic graphite (HOPG) Nanocomposites Nanoparticles Particulate composites polyaniline Polyanilines Pyrolytic graphite Shells 热解石墨 电化学制备 纳米复合材料 聚苯胺 高定向裂解石墨 |
| Title | Electrochemical preparation and characterization of gold-polyaniline core-shell nanocomposites on highly oriented pyrolytic graphite |
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