Radiation-induced and chemical formation of gold clusters

Gachard, E.; Remita, Hynd; Khatouri, J.; Keita, Bineta; Nadjo, Louis; Belloni, and Jacqueline

doi:10.1039/a804445g

Cited by 277 publications

(326 citation statements)

References 20 publications

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“…AuNP were synthesized with photoinitiator Irgacure™ I-2959 in excess to generate enough acetone ketyl radicals to reduce tetrachloroaurate and form nanoparticle. 12 Extinction spectra from Figure 6 shows surface plasmon band with an extinction peak close to 530 nm indicating the size close to 12 nm, which has been confirmed by TEM microscopy (an Inset of Figure 6). It was possible to synthesize reproducible gold nanoparticles in a very short period (15 minutes of irradiation) with efficiency comparable to commercial photoreactors, but with a final cost very lower than those available in the market.…”

Section: Figure 7 the Observed Differences Between Electronic Spectrmentioning

confidence: 70%

Assembly of Low-Cost Lab-Made Photoreactor for Preparation of Nanomaterials

Katic¹,

Santos²,

Gabriel³

et al. 2017

Quim. Nova

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In this paper, a low-cost and versatile lab-made photoreactor was constructed for the preparation of nanomaterials such as gold nanoparticles and reduced graphene oxide. The power of the lab-made photoreactor can be easily adjusted according to the number of lamps turned on. Moreover, the lab-made photoreactor allows the utilization of different sources of irradiation with distinct wavelengths. Performance tests for production of gold nanoparticles showed reproducibility and equal efficiency as compared to the literature. Also, the photoreactor powered with UV-A and UV-C as sources of irradiation can be used for modulation of the reduction degree of graphene oxide.

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Section: Figure 7 the Observed Differences Between Electronic Spectrmentioning

confidence: 70%

Assembly of Low-Cost Lab-Made Photoreactor for Preparation of Nanomaterials

Katic¹,

Santos²,

Gabriel³

et al. 2017

Quim. Nova

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“…Briefly, gold ions can be efficiently reduced by the hydrogen radicals and solvated electrons that are generated from photolysis of water under X-ray irradiation [17]. During the reduction, GA serves as a template to confines the growth of AuNPs [18].…”

Section: Resultsmentioning

confidence: 99%

Radiotherapy of the Excretable Radioactive Gold Nanocomposite with Intratumoral Injection

Lin¹,

Chen²,

Tseng³

et al. 2013

IJMMM

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“…In contrast to certain other metal ions such as Au III (Gachard et al, 1998), Ir III (Mills and Henglein, 1985), Pt II (Keghouche, 1983), Pd II (Michaelis and Henglein, 1992), etc for which the monovalent ions are stable, at least at low doses (Gachard et al, 1998), no induction time (Fig. 1, inset) is observed in the increase of the Rh n absorbance with the g-irradiation dose.…”

Section: Rhodium Solutionsmentioning

confidence: 95%

Radiation-induced reduction of mixed silver and rhodium ionic aqueous solution

Torigoe

Remita

Beaunier

et al. 2002

Radiation Physics and Chemistry

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Silver and rhodium metal nanoparticles were synthesized by electron beam and g-radiolysis of mixed solutions containing (Rh II acetate) dimer and Ag + sulfate in variable proportions. From the observation of the optical absorption spectra, transmission electron microscopic images and local X-ray analysis at increasing doses, it is concluded that the metals are segregated into two populations, which are randomly distributed according to the mixture content, one of 1.5-2 nm pure rhodium clusters, and the other of 15-20 nm pure silver clusters. At complete reduction of both metals, the Ag nanoparticles are systematically surrounded by the small rhodium clusters. r

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Radiation-induced and chemical formation of gold clusters

Cited by 277 publications

References 20 publications

Assembly of Low-Cost Lab-Made Photoreactor for Preparation of Nanomaterials

Assembly of Low-Cost Lab-Made Photoreactor for Preparation of Nanomaterials

Radiotherapy of the Excretable Radioactive Gold Nanocomposite with Intratumoral Injection

Radiation-induced reduction of mixed silver and rhodium ionic aqueous solution

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