Heterobimetallic Group 11/13 sulfide nanoparticles (AgInS , CuInS , Ag GaS , and CuGaS ) are formed by treatment of [M(S CAr) ] (M=Ga or In) with either AgNO or CuCl under mild conditions. The intermediary gallium or indium tris(aryldithioate) complexes are easily prepared by stirring the appropriate metal and aryldithioc acid at room temperature. Overall, this two-step process is a simple solution-based method for transforming Ga and In metal into valuable ternary metallosulfide nanoparticles at relatively low temperatures.
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http://dx.doi.org/10.1002/cplu.201800165 | DOI Listing |
Int J Biol Macromol
January 2025
Department of Analytical Chemistry, Faculty of Chemistry, Razi University, Kermanshah, Iran.
This study introduces the development of a highly sensitive label-free electrochemical immunosensor specifically designed to detect prostate-specific antigen (PSA). A glassy carbon electrode (GCE) coated with Au nanoparticles/polyhedral hollow CoCu bimetallic sulfide (CuCoS) was employed as a sensing interface for the fixation of the monoclonal anti-PSA antibody. The nanoarchitectures enhanced the capacity for loading prostate-specific antibodies (Ab) and effectually boosted electrical conductivity leading to enhance the electrochemical signal and greater sensitivity for the detection of PSA.
View Article and Find Full Text PDFACS Appl Nano Mater
March 2024
Department of Radiology, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States.
Photon-counting mammography is an emerging modality that allows for spectral imaging and provides a differentiation of material compositions. The development of photon-counting mammography-specific contrast agents has yet to be explored. In this study, the contrast, sensitivity, and organ dose between silver sulfide nanoparticles (AgS-NPs) and a clinically approved iodinated agent (iopamidol) were investigated using a contrast-embedded gradient ramp phantom and a prototype scanner.
View Article and Find Full Text PDFEnviron Pollut
January 2025
School of Environment, Hangzhou Institute for Advanced Study, UCAS, Hangzhou 310024, China; State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, P. O. Box 2871, Beijing 100085, China; College of Resources and Environment, University of Chinese Academy of Sciences, Beijing, 100049, China.
Silver-containing nanoparticles (AgCNPs) have attracted increasing concerns because of their potential adverse effects on aquatic ecosystems. However, minimal information is available regarding their concentration, distribution, and speciation in the actual environment. In this work, different species of AgCNPs, including silver nanoparticles (AgNPs), silver chloride (AgCl NPs) and silver sulfide (AgS NPs) in water and sediment samples from Taihu Lake were analyzed by a multistep selective dissolution method combined with single-particle inductively coupled plasma mass spectrometry.
View Article and Find Full Text PDFJ Phys Chem C Nanomater Interfaces
January 2025
Department of Chemistry, University College London, 20 Gordon Street, London WC1H 0AJ, U.K.
Using many-body perturbation theory, we study the optical properties of phenylthiolate-capped cadmium sulfide nanoparticles to understand the origin of the experimentally observed blue shift in those properties with decreasing particle size. We show that the absorption spectra predicted by many-body perturbation theory agree well with the experimentally measured spectra. The results of our calculations demonstrate that all low-energy excited states correspond to a mixture of two fundamental types of excitations: intraligand and ligand-to-metal charge-transfer excitations.
View Article and Find Full Text PDFThe detection of lead ions (Pb) is crucial due to its harmful effects on health and the environment. In this article, what we believe to be a novel dielectric-metal hybrid structure localized surface plasmon resonance (LSPR) sensor for ultra-trace detection of Pb is proposed, featuring a zinc sulfide layer, silver nanodisks (Ag-disks), and graphene oxide (GO) covering the Ag-disks. The sensor works by detecting the variation of gold nanoparticles (AuNPs) on its surface when Pb cleaves a substrate strand linked to a DNAzyme, causing the AuNPs modified on the substrate strand to disperse.
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