Sustainable Synthesis of Cadmium Sulfide, with Applicability in Photocatalysis, Hydrogen Production, and as an Antibacterial Agent, Using Two Mechanochemical Protocols (original) (raw)
Related papers
Synthesis, Characterisation and Photocatalytic Activity of Cadmium Sulphide Nanoparticles
Chemical Science Transactions, 2016
Cadmium sulphide (CdS) nanoparticles were synthesized using thiourea as a source for sulphide ion in the presence of disodium succinate. The prepared nanoparticles were characterized by IR spectroscopy, x-ray diffraction and scanning electron microscopy. The photocatalytic activity of CdS was tested for degradation of methylene blue and rhodamine B. CdS catalyst shows high activity for the photocatalytic degradation of methylene blue dye.
A review on environmentally benevolent synthesis of CdS nanoparticle and their applications
Environmental Chemistry and Ecotoxicology, 2021
The word 'Nano' received great attention of world, due to their fabulous and novel applications in numerous fields. Cadmium sulphide nanoparticles (CdS NPs) are unique in their properties due the size and shape, and are popular in the area of biosensor, bio-imaging, nano-medicine, molecular pathology, antimicrobial activities, photovoltaic cells, semiconductor, and drug delivery, etc. Due to its fascinating applications, it was synthesized using several methods and explored for its all possible applications. The most affordable, efficient, friendly and biocompatible way of creation of CdS NPs is biogenic synthesis using microorganisms such as bacteria, fungus, algae, enzymes, proteins and parts of plants. In biogenic synthesis of CdS, cadmium undergoes bio-reduction by the variety of natural products present in microorganism as well as in plants. In present review, inclusive study was piloted on the nano-synthesis, characterization and various applications of CdS NPs made using different plant sources and microorganism.
2011
Cadmium sulphide nanoparticles (NPs) have been synthesized in aqueous phase at temperature range 70 0 C using Bovine Serium Albumin (BSA) as the capping agent. Cadmium sulphide nanocrystals are synthesized by dissolving 0.1 M CdSO 4 , 0.1 M Na 2 S and BSA as stabilizing agent. Cadmium sulphide nanoparticles have been characterized with the help of X-ray diffraction (XRD), Transmission electron microscopy (TEM), Thermal analysis (TGA/DTA) and UV-Visible spectroscopy. The average particle size were found to be in the range of 3.1-3.8 nm from the peak broadening of X-ray diffraction. The CdS Nanoparticles have been effectively used for the removal of methylene blue from water samples in presence of visible sunlight and sodium lamp source.
Antimicrobial Activity of Bio and Chemical Synthesized Cadmium Sulfide Nanoparticles
The Egyptian Journal of Hospital Medicine, 2018
Background: The green synthesis of cadmium sulfide (CdS) nanoparticles has been regarded as the most promising technique for their prospective applications in biological system. Aim of the work: In this study isolation of different bacterial strains from stool samples of healthy volunteer, selection of the most efficient bacterial strains able to reduce cadmium sulfide metal into nanoparticles. Characterization of biosynthesized metal nanoparticles by standard analytical methods. Mediating the biosynthesized cadmium sulfide nanoparticles in medical applications in comparison to those produced by chemical methods. Materials and methods: Extracellular Escherichia coli E-30 and Klebsiella pneumoniae K-6 isolated from stool samples were the strains used for biosynthesis. Cadmium sulfide nanoparticles were also produced by wet chemical method. The characterizations of cadmium sulfide nanoparticles were done by using UV-Visible Spectroscopy, Transmission electron microscopy (TEM), energy dispersive x-ray (EDX) and Fourier transform infrared spectroscopy (FT-IR). Results: Escherichia coli E-30 has shown to be efficient in synthesizing cadmium sulfide nanoparticles where CdS nanoparticles were with average size ranging from 3.2 to 44.9 nm while average size of CdS nanoparticle was synthesized by Klebsiella pneumoniae K-6 ranging from 8.5 to 44.9 nm. While cadmium sulfide nanoparticles synthesized by wet chemical method, ranging from 8.77 to 16.50 nm. Biosynthesized cadmium sulfide nanoparticles by Escherichia coli E-30 showed highest antimicrobial activity on Aspergillus fumigatus, Geotricum candidum, Bacillus subtilis, Staphylococcus aureus and Escherichia coli than chemical synthesized of CdS nanoparticles. Conclusion: Escherichia coli and Klebsiella pneumoniae isolated from stool samples had the ability to produce cadmium sulfide nanoparticles. This kind of microorganisms can be used for synthesis of nanoparticles and heavy metal absorption for detoxification of environment.
Separation and Purification Technology, 2013
Cadmium sulphide (CdS) nanostructures were synthesized via a simple chemical precipitation method by using Mercaptoethylamine hydrochloride (MEA) as a capping agent. Fine tuning of the nanosized CdS material was carried out by controlling the amount of the capping agent. The synthesized CdS nanostructures were characterized by UV-Vis spectroscopy, X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), Fourier transform infrared spectroscopy (FT-IR), and UV-Vis diffuse reflectance spectroscopy (DRS). Optical absorption spectroscopy was mainly used to measure the band gap and size of the CdS nanostructures. The photocatalytic activities of the synthesized samples were investigated for degradation of methylene blue (MB) under blue LED (3 W) and solar light irradiation.
Room temperature synthesis of CdS nanoflakes for photocatalytic properties
Journal of Materials Science: Materials in Electronics, 2014
Herein, we report, preparation of cadmium sulphide (CdS) nanoflakes at room temperature by simple arrested precipitation method. The synthesized CdS nanoflakes were characterized by various techniques such as X-ray diffraction, scanning electron microscopy, energy dispersive spectroscopy, Fourier transform-infrared spectroscopy, and UV-Visible spectrophotometer. Nanoflakes of CdS were found to be a mixed-phases composed of cubic and hexagonal with average crystallite size of 20 nm. Surface morphology of CdS seems to be nanoflakes. The absorption spectrum was slightly shifted to blue region as compared to the bulk, this indicates that synthesized material is smaller in size. The band gap energy was found to be 2.48 eV. The photocatalytic results reveals that CdS nanoflakes exhibits excellent photocatalytic performance for methyl orange (20 ppm) degradation, under sunlight and UV within 120 min (83 and 95 % respectively).
Cell-associated biosynthesis of cadmium sulfide (CdS) nanoparticles has been reported to be rather slow and costly. In this study, we report on a rapid and low cost biosynthesis of CdS using culture supernatants of Escherichia coli ATCC 8739, Bacillus subtilis ATCC 6633 and Lactobacillus acidophilus DSMZ 20079T. The synthesis was performed at room temperature in the laboratory ambience and CdS nanoparticles were formed within 24 h. Ultraviolet (UV)-visible spectroscopy study revealed the buildup of absorption bands at 419.5, 381.5 and 362.5 nm for E. coli ATCC 8739, B. subtilis ATCC 6633 and L. acidophilus DSMZ 20079T, respectively for assisted synthesis of CdS nanoparticles. X-ray diffraction (XRD), transmission electron microscopy (TEM) and fluorescence spectral analyses were performed to ascertain the formation of CdS nanoparticles. Individual nanoparticles as well as few aggregates having the size of 2.5 to 5.5 nm were found. The process of extracellular and fast biosynthesis may help in the development of an easy and eco-friendly route for the synthesis of CdS nanoparticles.
International Journal of Nanotechnology, 2021
The structural regulation of nanoparticles is a challenging task without any structure determining agents such as templates, surfactants, etc. In the present study, the structure of cadmium sulphide nanoparticles (CdS NPs) has been effortlessly changed from hexagonal to face centred cubic structure under solvothermal conditions by facile volume ratio adjustment of the solvents (water and ethanol). The various CdS NPs prepared have been investigated using different characterisation techniques and their structure, size and morphology vary with respect to the solvent composition. Furthermore, the photocatalytic performance of CdS NPs has been investigated using Methylene Blue (MB) as model organic pollutant. It has been observed that the photocatalytic degradation efficiency of MB is significantly influenced by the structure of CdS NPs.