Effective gel for gold nanoparticle formation, support and metal oxide templating

Wang, Xingdong; Egan, Caroline E.; Zhou, Meifang; Prince, Kathryn; Mitchell, David R. G.; Caruso, Rachel A.

doi:10.1039/b704825d

Cited by 55 publications

(41 citation statements)

References 15 publications

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“…[32][33][34] Modification of hydrotalcites with organometallic complexes [2] or polyoxometallates [35] further broadens the range of applications of hydrotalcites or hydrotalcite-derived materials as catalysts (e.g., propylene epoxidation). Dispersing active metals in the form of small and stable particles is still a major target for researchers looking for catalytic materials, [36][37][38][39][40] and HTs used as supports are a promising tool for this purpose. [21,30,[41][42][43][44][45][46][47][48] Numerous experimental investigations have been published on the use of hydrotalcites for catalytic applications.…”

Section: Introductionmentioning

confidence: 99%

Exploring, Tuning, and Exploiting the Basicity of Hydrotalcites for Applications in Heterogeneous Catalysis

Debecker

Gaigneaux

Busca

2009

Chemistry A European J

474

265

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Basic catalysis! The basic properties of hydrotalcites (see picture) make them attractive for numerous catalytic applications. Probing the basicity of the catalysts is crucial to understand the base-catalysed processes and to optimise the catalyst preparation. Various parameters can be employed to tune the basic properties of hydrotalcite-based catalysts towards the basicity demanded by each target chemical reaction.Hydrotalcites offer unique basic properties that make them very attractive for catalytic applications. It is of primary interest to make use of accurate tools for probing the basicity of hydrotalcite-based catalysts for the purpose of 1) fundamental understanding of base-catalysed processes with hydrotalcites and 2) optimisation of the catalytic performance achieved in reactions of industrial interest. Techniques based on probe molecules, titration techniques and test reactions along with physicochemical characterisation are overviewed in the first part of this review. The aim is to provide the tools for understanding how series of parameters involved in the preparation of hydrotalcite-based catalytic materials can be employed to control and adapt the basic properties of the catalyst towards the basicity demanded by each target chemical reaction. An overview of recent and significant achievements in that perspective is presented in the second part of the paper.

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Section: Introductionmentioning

confidence: 99%

Exploring, Tuning, and Exploiting the Basicity of Hydrotalcites for Applications in Heterogeneous Catalysis

Debecker

Gaigneaux

Busca

2009

Chemistry A European J

474

265

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“…This was followed by the boiled extract and the green biomass. Peak with higher intensity suggest increased gold NP concentration (Wang et al 2007). NPs synthesized were quantified using ICP-AES Spectro Arcos at 267.59 nm.…”

Section: Resultsmentioning

confidence: 99%

Synthesis of gold nanoparticles by various leaf fractions of Semecarpus anacardium L. tree

Raju

Mehta

Hazra

2010

Trees

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Gold nanoparticles (NPs) were synthesized using Semecarpus anacardium leaf extracts in water and the green biomass. Extract prepared at ambient condition by crushing the leaves in deionized water is identified as 'green extract', and that by boiling the leaf pieces as 'boiled extract'. The mass remaining after separating the 'green extract' is identified as 'green biomass'. These components triggered rapid reduction of Au(III) to Au (0) in HAuCl 4 solution indicating the natural ability of the leaves of S. anacardium to synthesize NPs in ambient conditions. Green extract produced more NPs compared to the boiled extract suggesting denaturization of some of the useful factors due to boiling. NPs were quantified using UV and ICP-AES analysis. These were characterized using Transmission electron microscopy, Fourier transform infrared spectroscopy and X-ray diffraction. TEM images of the particles formed with green extract, boiled extract and green biomass showed that the particles were of different shapes and sizes.

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“…The choice of gel is crucial to the mechanism; agarose gel has an inherent reducing effect [40]. Closely related to gel templating is the synthesis of subnanometre Au NPs in the dendrimer polyamidoamine.…”

Section: Synthesis Of Nanoparticles By Other Methodsmentioning

confidence: 99%

Functionalisation of nanoparticles for biomedical applications

2010

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Effective gel for gold nanoparticle formation, support and metal oxide templating

Abstract: . (2007). Effective gel for gold nanoparticle formation, support and metal oxide templating. Chemical Communications, 2007 (29), 3060-3062.

Cited by 55 publications

References 15 publications

Exploring, Tuning, and Exploiting the Basicity of Hydrotalcites for Applications in Heterogeneous Catalysis

Exploring, Tuning, and Exploiting the Basicity of Hydrotalcites for Applications in Heterogeneous Catalysis

Synthesis of gold nanoparticles by various leaf fractions of Semecarpus anacardium L. tree

Functionalisation of nanoparticles for biomedical applications

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