One-pot sonochemical synthesis of reduced graphene oxide uniformly decorated with ultrafine silver nanoparticles for non-enzymatic detection of H2O2 and optical detection of mercury ions
Reduced graphene oxide (rGO) uniformly decorated with silver nanoparticles (AgNPs) was synthesized through the simple ultrasonic irradiation of an aqueous solution containing a silver ammonia complex (Ag(NH3)2OH) and graphene oxide (GO). The results of X-ray diffraction, Fourier-transform infrared t...
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| Format: | Article |
| Language: | English |
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Royal Society of Chemistry
2014
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| Online Access: | http://psasir.upm.edu.my/id/eprint/34744/ http://psasir.upm.edu.my/id/eprint/34744/1/34744.pdf |
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| author | Golsheikh, Amir Moradi Huang, Nay Ming Lim, Hong Ngee Zakaria, Rozalina |
| author_facet | Golsheikh, Amir Moradi Huang, Nay Ming Lim, Hong Ngee Zakaria, Rozalina |
| author_sort | Golsheikh, Amir Moradi |
| building | UPM Institutional Repository |
| collection | Online Access |
| description | Reduced graphene oxide (rGO) uniformly decorated with silver nanoparticles (AgNPs) was synthesized through the simple ultrasonic irradiation of an aqueous solution containing a silver ammonia complex (Ag(NH3)2OH) and graphene oxide (GO). The results of X-ray diffraction, Fourier-transform infrared transmission spectroscopy, X-ray photoelectron spectroscopy and Raman spectroscopy confirmed the simultaneous formation of cubic-phase AgNPs and the reduction of GO through an ultrasonication process. The size of the nanoparticles could be tuned by adjusting the volume ratio of the precursors and the ultrasonic irradiation time. Transmission electron microscopy images showed a uniform distribution of ultrafine spherical AgNPs with a narrow size distribution on the rGO sheets, which could only be achieved using the silver ammonia complex, rather than silver nitrate, as the precursor. The average particle size of the silver with the narrowest size distribution was 4.57 nm. The prepared AgNPs–rGO modified glassy carbon electrode exhibited notable electrocatalytic activity toward the non-enzymatic detection of H2O2 with a wide linear range of 0.1–70 mM (R2 = 0.9984) and a detection limit of 4.3 μM. Furthermore, the prepared AgNPs–rGO composite was employed for the spectral detection of Hg2+ ions and showed a detection limit of 20 nM. |
| first_indexed | 2025-11-15T09:25:18Z |
| format | Article |
| id | upm-34744 |
| institution | Universiti Putra Malaysia |
| institution_category | Local University |
| language | English |
| last_indexed | 2025-11-15T09:25:18Z |
| publishDate | 2014 |
| publisher | Royal Society of Chemistry |
| recordtype | eprints |
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| spelling | upm-347442016-03-31T00:28:47Z http://psasir.upm.edu.my/id/eprint/34744/ One-pot sonochemical synthesis of reduced graphene oxide uniformly decorated with ultrafine silver nanoparticles for non-enzymatic detection of H2O2 and optical detection of mercury ions Golsheikh, Amir Moradi Huang, Nay Ming Lim, Hong Ngee Zakaria, Rozalina Reduced graphene oxide (rGO) uniformly decorated with silver nanoparticles (AgNPs) was synthesized through the simple ultrasonic irradiation of an aqueous solution containing a silver ammonia complex (Ag(NH3)2OH) and graphene oxide (GO). The results of X-ray diffraction, Fourier-transform infrared transmission spectroscopy, X-ray photoelectron spectroscopy and Raman spectroscopy confirmed the simultaneous formation of cubic-phase AgNPs and the reduction of GO through an ultrasonication process. The size of the nanoparticles could be tuned by adjusting the volume ratio of the precursors and the ultrasonic irradiation time. Transmission electron microscopy images showed a uniform distribution of ultrafine spherical AgNPs with a narrow size distribution on the rGO sheets, which could only be achieved using the silver ammonia complex, rather than silver nitrate, as the precursor. The average particle size of the silver with the narrowest size distribution was 4.57 nm. The prepared AgNPs–rGO modified glassy carbon electrode exhibited notable electrocatalytic activity toward the non-enzymatic detection of H2O2 with a wide linear range of 0.1–70 mM (R2 = 0.9984) and a detection limit of 4.3 μM. Furthermore, the prepared AgNPs–rGO composite was employed for the spectral detection of Hg2+ ions and showed a detection limit of 20 nM. Royal Society of Chemistry 2014 Article PeerReviewed application/pdf en http://psasir.upm.edu.my/id/eprint/34744/1/34744.pdf Golsheikh, Amir Moradi and Huang, Nay Ming and Lim, Hong Ngee and Zakaria, Rozalina (2014) One-pot sonochemical synthesis of reduced graphene oxide uniformly decorated with ultrafine silver nanoparticles for non-enzymatic detection of H2O2 and optical detection of mercury ions. RSC Advances, 4 (69). pp. 36401-36411. ISSN 2046-2069 http://pubs.rsc.org/en/Content/ArticleLanding/2014/RA/C4RA05998K#!divAbstract 10.1039/C4RA05998K |
| spellingShingle | Golsheikh, Amir Moradi Huang, Nay Ming Lim, Hong Ngee Zakaria, Rozalina One-pot sonochemical synthesis of reduced graphene oxide uniformly decorated with ultrafine silver nanoparticles for non-enzymatic detection of H2O2 and optical detection of mercury ions |
| title | One-pot sonochemical synthesis of reduced graphene oxide uniformly decorated with ultrafine silver nanoparticles for non-enzymatic detection of H2O2 and optical detection of mercury ions
|
| title_full | One-pot sonochemical synthesis of reduced graphene oxide uniformly decorated with ultrafine silver nanoparticles for non-enzymatic detection of H2O2 and optical detection of mercury ions
|
| title_fullStr | One-pot sonochemical synthesis of reduced graphene oxide uniformly decorated with ultrafine silver nanoparticles for non-enzymatic detection of H2O2 and optical detection of mercury ions
|
| title_full_unstemmed | One-pot sonochemical synthesis of reduced graphene oxide uniformly decorated with ultrafine silver nanoparticles for non-enzymatic detection of H2O2 and optical detection of mercury ions
|
| title_short | One-pot sonochemical synthesis of reduced graphene oxide uniformly decorated with ultrafine silver nanoparticles for non-enzymatic detection of H2O2 and optical detection of mercury ions
|
| title_sort | one-pot sonochemical synthesis of reduced graphene oxide uniformly decorated with ultrafine silver nanoparticles for non-enzymatic detection of h2o2 and optical detection of mercury ions |
| url | http://psasir.upm.edu.my/id/eprint/34744/ http://psasir.upm.edu.my/id/eprint/34744/ http://psasir.upm.edu.my/id/eprint/34744/ http://psasir.upm.edu.my/id/eprint/34744/1/34744.pdf |