Gamma radiation induced synthesis of gold nanoparticles in aqueous polyvinyl pyrrolidone solution and its application for hydrogen peroxide estimation

Misra, Nilanjal; Biswal, Jayashree; Gupta, Alka; Sainis, Jayashree Krishna; Sabharwal, S.

doi:10.1016/j.radphyschem.2011.10.014

Cited by 80 publications

(50 citation statements)

References 35 publications

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“…These reducing species initiate the reduction of precursor metal ions to metal atoms in the zerovalent state. The reduced metal atoms gradually coalesce to form metal nanoparticles whose size is regulated by suitable capping/stabilizing agents, such as PVP (Misra et al 2012(Misra et al , 2013a. The LSPR band of the metal nanoparticles can be utilized as a highly sensitive tool for estimation of various analytes, thereby providing an appropriate, simplified, cheap, and rapid alternative to more sophisticated detection techniques.…”

Section: Introductionmentioning

confidence: 99%

Radiation synthesized poly(n-vinyl-2-pyrrolidone)-stabilized-gold nanoparticles as LSPR-based optical sensor for mercury ions estimation

et al. 2015

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Poly(n-vinyl-2-pyrrolidone)-stabilizedgold nanoparticles (PVP-Au-NPs) have been synthesized via a green-60 Co-Gamma radiolytic route and employed as a localized surface plasmon resonance (LSPR)-based optical sensor for estimation of trace quantities of Hg 2? ion in aqueous solutions. The in situ generated PVP-Au-NPs were characterized using UV-vis spectroscopy, transmission electron microscopy, and particle size analysis techniques. Reaction conditions were optimized to obtain uniformly dispersed PVP-Au-NPs with average particle size of 7.1 ± 1.6 nm (±s), which exhibited a narrow LSPR band at *527 nm. The decrease in LSPR band intensity of PVP-Au-NPs with increase in Hg 2? ion concentration was found to be linear in the Hg 2? ion concentration range of 0-100 nM. The LSPR-based PVP-Au-NPs optical sensor system was found to be selective for Hg 2? and independent of interference from other metal ions such as Ca 2?, Cu 2? , Cd 2? , and Fe 2? up to a concentration of 500 nM.

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Section: Introductionmentioning

confidence: 99%

Radiation synthesized poly(n-vinyl-2-pyrrolidone)-stabilized-gold nanoparticles as LSPR-based optical sensor for mercury ions estimation

et al. 2015

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“…There is a redshift of Au plasmon peak with increasing concentration of Au III , which was due to the formation of larger particles in higher precursor concentration. 17 Furthermore, the full width half maximum (FWHM) was used to demonstrate the size distribution of the NPs in solution. The narrower peak indicates the narrower size distribution of the particles.…”

Section: Resultsmentioning

confidence: 99%

“…Misra et al have synthesized AuNPs in aqueous solution of polyvinyl pyrrolidone (PVP) by gamma radiolysis from HAuCl 4 precursor and in presence of small concentrations of Ag I , 2-propanol and acetone. 17 Liu et al have reported the preparation of AgNPs by using sodium alginate as a stabilizer under gamma ray radiation, in which isopropanol was added as a scavenger of hydroxyl radiacal. 18 Nanocrystalline indium powders from In III aqueous solution were also prepared by employing polyvinyl alcohol (PVA) or sodium dodecyl sulfate (SDS) as surfactants, isopropanol as scavenger and EDTA as the complexing agent.…”

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confidence: 99%

Additive-Free Gold Nanoparticles Synthesized by Gamma-Ray Irradiation: Applications in Electrocatalysis and Surface-Enhanced Raman Scattering

Zhu

Liao

Gao

et al. 2014

J. Electrochem. Soc.

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Additive-free gold nanoparticles (AuNPs) were successfully synthesized by gamma ray irradiation in aqueous solution using HAuCl 4 as precursor. The size was optimized by regulating the concentration of HAuCl 4 and the dose of irradiation. The electrocatalytic performance of AuNPs for the oxidation of glucose was demonstrated. The obtained AuNPs displayed superior electrocatalysis for the oxidation of glucose with a linear response range from 50 μM to 16 mM, and the limit of detection was estimated to be 14.2 μM. The surface-enhanced Raman scattering (SERS) activity of the synthesized AuNPs was also investigated, which showed excellent SERS enhancement in the low concentration detection (1 × 10 −7 M) of Rhodamine 6G solution with an enhancement factor of 1.4 × 10 6 .

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“…Isopropanol (IPA) reacts with the H· and ·OH radicals and acetone reacts with e aq − , resulting in the formation of 2-propyl radicals. 43 The 2-propyl radical can reduce Au III ions in the system to their zero valence state, Au 0 , which leads to the formation of gold nanoparticles. Inclusion of IPA and acetone with C n ELPs and chloroauric acid resulted in the formation of darker colored dispersions compared to cases where the scavenging agents were not used, following treatments with similar X-ray radiation doses.…”

Section: ■ Results and Discussionmentioning

confidence: 99%

Generation of Polypeptide-Templated Gold Nanoparticles using Ionizing Radiation

et al. 2013

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Ionizing radiation, including γ rays and X-rays, are high-energy electromagnetic radiation with diverse applications in nuclear energy, astrophysics, and medicine. In this work, we describe the use of ionizing radiation and cysteine-containing elastin-like polypeptides (C(n)ELPs, where n = 2 or 12 cysteines in the polypeptide sequence) for the generation of gold nanoparticles. In the presence of C(n)ELPs, ionizing radiation doses higher than 175 Gy resulted in the formation of maroon-colored gold nanoparticle dispersions, with maximal absorbance at 520 nm, from colorless metal salts. Visible color changes were not observed in any of the control systems, indicating that ionizing radiation, gold salt solution, and C(n)ELPs were all required for nanoparticle formation. The hydrodynamic diameters of nanoparticles, determined using dynamic light scattering, were in the range of 80-150 nm, while TEM imaging indicated the formation of gold cores 10-20 nm in diameter. Interestingly, C2ELPs formed 1-2 nm diameter gold nanoparticles in the absence of radiation. Our results describe a facile method of nanoparticle formation in which nanoparticle size can be tailored based on radiation dose and C(n)ELP type. Further improvements in these polypeptide-based systems can lead to colorimetric detection of ionizing radiation in a variety of applications.

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Gamma radiation induced synthesis of gold nanoparticles in aqueous polyvinyl pyrrolidone solution and its application for hydrogen peroxide estimation

Cited by 80 publications

References 35 publications

Radiation synthesized poly(n-vinyl-2-pyrrolidone)-stabilized-gold nanoparticles as LSPR-based optical sensor for mercury ions estimation

Radiation synthesized poly(n-vinyl-2-pyrrolidone)-stabilized-gold nanoparticles as LSPR-based optical sensor for mercury ions estimation

Additive-Free Gold Nanoparticles Synthesized by Gamma-Ray Irradiation: Applications in Electrocatalysis and Surface-Enhanced Raman Scattering

Generation of Polypeptide-Templated Gold Nanoparticles using Ionizing Radiation

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