In-situ green synthesis of highly active GSH-capped Pt-Au-Ag-hybrid nanoclusters

Abstract

Recently much attention has been paid to the application of metal hybrid nanoparticles in industrial catalytic fields because of their super-efficient catalytic activity and attractive properties. We explored a novel strategy to prepare GSH-capped Pt-Au-Ag-hybrid nanoclusters through the synergistic effect between ascorbic acid (VC) and glutathione (GSH) with chloroplatinic acid, chloroauric acid, and silver nitrate as precursors. The potential utilization of as-prepared GSH-capped Pt-Au-Aghybrid nanoclusters for catalytic applications has been evaluated through the reduction of 4-nitrophenol (4-NP) with NaBH 4 ; we obtained the kinetic data by monitoring with UV-Vis spectroscopy. Our results illustrate that GSH-capped Pt-AuAg-hybrid nanoclusters could facilitate the process of reduction of 4-NP in a way that is unprecedented. This approach may offer a novel, non-cytotoxicity, efficient catalyst for industry.Pt-Au-Ag-hybrid, ascorbic acid, glutathione, 4-nitrophenol, catalyst

Glutathione-Stabilized Fluorescent Gold Nanoclusters Vary in Their Influences on the Proliferation of Pseudorabies Virus and Porcine Reproductive and Respiratory Syndrome Virus

“…The full-range X-ray photoelectron spectrometry (XPS) analysis (Figure B) showed five evident peaks at 84.0, 163.0, 285.0, 400.1, and 530.6 eV, which could be attributed to Au 4f, S 2p, C 1s, N 1s, and O 1s, respectively. The Au 4f core-level spectra are shown in Figure C, with the peaks at 84.0 and 87.6 eV corresponding to Au 4f 7/2 and Au 4f 5/2 , respectively . The spectrum of S 2p (Figure D) revealed the existence of S 2 2– , S 2– , and S 0 /S n 2– , demonstrating the Au–S bond on the surface of Au NCs .…”

“…The Au 4f core-level spectra are shown in Figure 2C, with the peaks at 84.0 and 87.6 eV corresponding to Au 4f 7/2 and Au 4f 5/2 , respectively. 51 The spectrum of S 2p (Figure 2D) revealed the existence of S 2 2− , S 2− , and S 0 /S n 2− , 52 demonstrating the Au−S bond on the surface of Au NCs. 39 The peaks of C 1s (Figure 2E 2F) .…”

Biomedical applications of nano-titania in theranostics and photodynamic therapy

“…These NPs (PSs) absorb the light in the form of a photon and transfer it to local oxygen containing molecules that release various kinds of ROS and 1 O 2 . [121][122][123][124] Recently NT combined inorganic materials with organic macromolecules as PSs to achieve their synergistic effects in PDT. 4).…”

“…gold, 107,108 silver, 109 zinc, 110,111 carbon fibers and complexes, 112,113 platinum, 114,115 titanium, 116 iron, 117,118 cerium, 119 ruthenium, 120 etc., and/or their hybrid clusters. [121][122][123][124] Recently NT combined inorganic materials with organic macromolecules as PSs to achieve their synergistic effects in PDT. 125,126 Over the last few decades, the potential of nano-TiO 2 as an inorganic PS for PDT has been extensively explored.…”

Protein coated gold nanoparticles as template for the directed synthesis of highly fluorescent gold nanoclusters

“…Qiu Jian Ding et al reported that a green method employed for synthesizing peptide-templated nanoclusters without requiring strong reducing agents [13]. Wang Xue Mei reported in situ green synthesis of highly active GSH-capped Pt-Au-Ag-hybrid nanoclusters [14]. Lina Zhao et al synthesized a typical peptide coated AuNC [15].…”