Fabrication of nanoelectrode ensembles by electrodepositon of Au nanoparticles on single-layer graphene oxide sheets
Nanoelectrode ensembles (NEEs) have been fabricated by the electrodeposition of Au nanoparticles (AuNPs) on single-layer graphene oxide (GO) sheets coated on a glassy carbon electrode (GCE). The fabricated NEEs show a typical sigmoidal shaped voltammetric profile, arising from the low coverage densi...
| Main Authors: | , , , , , |
|---|---|
| Other Authors: | |
| Format: | Journal Article |
| Language: | English |
| Published: |
2013
|
| Online Access: | https://hdl.handle.net/10356/97502 http://hdl.handle.net/10220/10737 |
| _version_ | 1811694498747514880 |
|---|---|
| author | Wang, Zhijuan Zhang, Juan Yin, Zongyou Wu, Shixin Mandler, Daniel Zhang, Hua |
| author2 | School of Materials Science & Engineering |
| author_facet | School of Materials Science & Engineering Wang, Zhijuan Zhang, Juan Yin, Zongyou Wu, Shixin Mandler, Daniel Zhang, Hua |
| author_sort | Wang, Zhijuan |
| collection | NTU |
| description | Nanoelectrode ensembles (NEEs) have been fabricated by the electrodeposition of Au nanoparticles (AuNPs) on single-layer graphene oxide (GO) sheets coated on a glassy carbon electrode (GCE). The fabricated NEEs show a typical sigmoidal shaped voltammetric profile, arising from the low coverage density of AuNPs on GCE and large distance among them, which can be easily controlled by varying the electrodeposition time. As a proof of concept, after the probe HS-DNA is immobilized on the NEEs through the Au–S bonding, the target DNA is detected with the methylene blue intercalator. Our results show that the target DNA can be detected as low as 100 fM, i.e. 0.5 amol DNA in 5 μL solution. |
| first_indexed | 2024-10-01T07:08:32Z |
| format | Journal Article |
| id | ntu-10356/97502 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T07:08:32Z |
| publishDate | 2013 |
| record_format | dspace |
| spelling | ntu-10356/975022020-06-01T10:13:34Z Fabrication of nanoelectrode ensembles by electrodepositon of Au nanoparticles on single-layer graphene oxide sheets Wang, Zhijuan Zhang, Juan Yin, Zongyou Wu, Shixin Mandler, Daniel Zhang, Hua School of Materials Science & Engineering Nanoelectrode ensembles (NEEs) have been fabricated by the electrodeposition of Au nanoparticles (AuNPs) on single-layer graphene oxide (GO) sheets coated on a glassy carbon electrode (GCE). The fabricated NEEs show a typical sigmoidal shaped voltammetric profile, arising from the low coverage density of AuNPs on GCE and large distance among them, which can be easily controlled by varying the electrodeposition time. As a proof of concept, after the probe HS-DNA is immobilized on the NEEs through the Au–S bonding, the target DNA is detected with the methylene blue intercalator. Our results show that the target DNA can be detected as low as 100 fM, i.e. 0.5 amol DNA in 5 μL solution. 2013-06-26T08:42:14Z 2019-12-06T19:43:22Z 2013-06-26T08:42:14Z 2019-12-06T19:43:22Z 2012 2012 Journal Article Wang, Z., Zhang, J., Yin, Z., Wu, S., Mandler, D., & Zhang, H. (2012). Fabrication of nanoelectrode ensembles by electrodepositon of Au nanoparticles on single-layer graphene oxide sheets. Nanoscale, 4(8), 2728-2733. 2040-3364 https://hdl.handle.net/10356/97502 http://hdl.handle.net/10220/10737 10.1039/c2nr30142c en Nanoscale © 2012 The Royal Society of Chemistry. |
| spellingShingle | Wang, Zhijuan Zhang, Juan Yin, Zongyou Wu, Shixin Mandler, Daniel Zhang, Hua Fabrication of nanoelectrode ensembles by electrodepositon of Au nanoparticles on single-layer graphene oxide sheets |
| title | Fabrication of nanoelectrode ensembles by electrodepositon of Au nanoparticles on single-layer graphene oxide sheets |
| title_full | Fabrication of nanoelectrode ensembles by electrodepositon of Au nanoparticles on single-layer graphene oxide sheets |
| title_fullStr | Fabrication of nanoelectrode ensembles by electrodepositon of Au nanoparticles on single-layer graphene oxide sheets |
| title_full_unstemmed | Fabrication of nanoelectrode ensembles by electrodepositon of Au nanoparticles on single-layer graphene oxide sheets |
| title_short | Fabrication of nanoelectrode ensembles by electrodepositon of Au nanoparticles on single-layer graphene oxide sheets |
| title_sort | fabrication of nanoelectrode ensembles by electrodepositon of au nanoparticles on single layer graphene oxide sheets |
| url | https://hdl.handle.net/10356/97502 http://hdl.handle.net/10220/10737 |
| work_keys_str_mv | AT wangzhijuan fabricationofnanoelectrodeensemblesbyelectrodepositonofaunanoparticlesonsinglelayergrapheneoxidesheets AT zhangjuan fabricationofnanoelectrodeensemblesbyelectrodepositonofaunanoparticlesonsinglelayergrapheneoxidesheets AT yinzongyou fabricationofnanoelectrodeensemblesbyelectrodepositonofaunanoparticlesonsinglelayergrapheneoxidesheets AT wushixin fabricationofnanoelectrodeensemblesbyelectrodepositonofaunanoparticlesonsinglelayergrapheneoxidesheets AT mandlerdaniel fabricationofnanoelectrodeensemblesbyelectrodepositonofaunanoparticlesonsinglelayergrapheneoxidesheets AT zhanghua fabricationofnanoelectrodeensemblesbyelectrodepositonofaunanoparticlesonsinglelayergrapheneoxidesheets |