Synthesis of Au/Al2O3 nanocatalyst and its application in the reduction of p-Nitrophenol
Gold (Au) nanoparticles supported on alumina (Al2O3) were prepared at several pH levels via the deposition- precipitation (DP) method. The effects of pH at below and above the isoelectric point (IEP) of Al2O3 as well as the pH adjustment before and after the addition of the support into the gold ch...
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| Formato: | Artigo |
| Idioma: | English |
| Publicado em: |
Chung-Kuo Hua Hsueh Hui
2011
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| Assuntos: | |
| Acesso em linha: | http://irep.iium.edu.my/12913/1/Synthesis_of_Au_Al2O3_Nanocatalyst_and_its_Application_in_the_Reduction_of_p-Nitrophenol.pdf |
| _version_ | 1825645356214386688 |
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| author | Yazid, Hanani Adnan, Rohana Farrukh, Muhammad Akhyar Abd Hamid, Shafida |
| author_facet | Yazid, Hanani Adnan, Rohana Farrukh, Muhammad Akhyar Abd Hamid, Shafida |
| author_sort | Yazid, Hanani |
| collection | IIUM |
| description | Gold (Au) nanoparticles supported on alumina (Al2O3) were prepared at several pH levels via the deposition-
precipitation (DP) method. The effects of pH at below and above the isoelectric point (IEP) of Al2O3 as well as the pH adjustment before and after the addition of the support into the gold chloride solution were investigated. The results revealed the formation of cationic, clusters andmetallic Au on alumina. The catalytic activity of these species was tested in the reduction of p-nitrophenol (p-NP) using hydrazine as a reductant. The catalytic reaction was monitored spectrophotometerically and the highest rate constant (k) achieved based on pseudo first order kineticmodel was 12.7 � 10-3 s-1. Structural and elemental characterizations of the supported gold nanoparticles were carried out using X-ray diffraction (XRD), transmission
electronmicroscopy (TEM), scanning electronmicroscopy (SEM), energy-dispersive X-rays (EDX), atomic absorption spectrometry (AAS), and ultraviolet-visible spectroscopy (UV-Vis). |
| first_indexed | 2024-03-05T22:46:30Z |
| format | Article |
| id | oai:generic.eprints.org:12913 |
| institution | International Islamic University Malaysia |
| language | English |
| last_indexed | 2024-03-05T22:46:30Z |
| publishDate | 2011 |
| publisher | Chung-Kuo Hua Hsueh Hui |
| record_format | dspace |
| spelling | oai:generic.eprints.org:129132013-06-28T03:39:51Z http://irep.iium.edu.my/12913/ Synthesis of Au/Al2O3 nanocatalyst and its application in the reduction of p-Nitrophenol Yazid, Hanani Adnan, Rohana Farrukh, Muhammad Akhyar Abd Hamid, Shafida QD Chemistry Gold (Au) nanoparticles supported on alumina (Al2O3) were prepared at several pH levels via the deposition- precipitation (DP) method. The effects of pH at below and above the isoelectric point (IEP) of Al2O3 as well as the pH adjustment before and after the addition of the support into the gold chloride solution were investigated. The results revealed the formation of cationic, clusters andmetallic Au on alumina. The catalytic activity of these species was tested in the reduction of p-nitrophenol (p-NP) using hydrazine as a reductant. The catalytic reaction was monitored spectrophotometerically and the highest rate constant (k) achieved based on pseudo first order kineticmodel was 12.7 � 10-3 s-1. Structural and elemental characterizations of the supported gold nanoparticles were carried out using X-ray diffraction (XRD), transmission electronmicroscopy (TEM), scanning electronmicroscopy (SEM), energy-dispersive X-rays (EDX), atomic absorption spectrometry (AAS), and ultraviolet-visible spectroscopy (UV-Vis). Chung-Kuo Hua Hsueh Hui 2011-05-16 Article PeerReviewed application/pdf en http://irep.iium.edu.my/12913/1/Synthesis_of_Au_Al2O3_Nanocatalyst_and_its_Application_in_the_Reduction_of_p-Nitrophenol.pdf Yazid, Hanani and Adnan, Rohana and Farrukh, Muhammad Akhyar and Abd Hamid, Shafida (2011) Synthesis of Au/Al2O3 nanocatalyst and its application in the reduction of p-Nitrophenol. Journal of the Chinese Chemical Society, 58 (5). pp. 593-601. ISSN 00094536 http://dx.doi.org/10.1002/jccs.201190093 doi:10.1002/jccs.201190093 |
| spellingShingle | QD Chemistry Yazid, Hanani Adnan, Rohana Farrukh, Muhammad Akhyar Abd Hamid, Shafida Synthesis of Au/Al2O3 nanocatalyst and its application in the reduction of p-Nitrophenol |
| title | Synthesis of Au/Al2O3 nanocatalyst and its application in the reduction of p-Nitrophenol |
| title_full | Synthesis of Au/Al2O3 nanocatalyst and its application in the reduction of p-Nitrophenol |
| title_fullStr | Synthesis of Au/Al2O3 nanocatalyst and its application in the reduction of p-Nitrophenol |
| title_full_unstemmed | Synthesis of Au/Al2O3 nanocatalyst and its application in the reduction of p-Nitrophenol |
| title_short | Synthesis of Au/Al2O3 nanocatalyst and its application in the reduction of p-Nitrophenol |
| title_sort | synthesis of au al2o3 nanocatalyst and its application in the reduction of p nitrophenol |
| topic | QD Chemistry |
| url | http://irep.iium.edu.my/12913/1/Synthesis_of_Au_Al2O3_Nanocatalyst_and_its_Application_in_the_Reduction_of_p-Nitrophenol.pdf |
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