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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Main Authors:	Yazid, Hanani, Adnan, Rohana, Farrukh, Muhammad Akhyar, Abd Hamid, Shafida
Format:	Article
Language:	English
Published:	Chung-Kuo Hua Hsueh Hui 2011
Subjects:	QD Chemistry
Online Access:	http://irep.iium.edu.my/12913/ http://irep.iium.edu.my/12913/ http://irep.iium.edu.my/12913/ http://irep.iium.edu.my/12913/1/Synthesis_of_Au_Al2O3_Nanocatalyst_and_its_Application_in_the_Reduction_of_p-Nitrophenol.pdf

id	iium-12913
recordtype	eprints
spelling	iium-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
repository_type	Digital Repository
institution_category	Local University
institution	International Islamic University Malaysia
building	IIUM Repository
collection	Online Access
language	English
topic	QD Chemistry
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
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).
format	Article
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
title	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_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_sort	synthesis of au/al2o3 nanocatalyst and its application in the reduction of p-nitrophenol
publisher	Chung-Kuo Hua Hsueh Hui
publishDate	2011
url	http://irep.iium.edu.my/12913/ http://irep.iium.edu.my/12913/ http://irep.iium.edu.my/12913/ http://irep.iium.edu.my/12913/1/Synthesis_of_Au_Al2O3_Nanocatalyst_and_its_Application_in_the_Reduction_of_p-Nitrophenol.pdf
first_indexed	2023-09-18T20:22:02Z
last_indexed	2023-09-18T20:22:02Z
_version_	1777408171369824256

Synthesis of Au/Al2O3 nanocatalyst and its application in the reduction of p-Nitrophenol

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