Preparation and characterization of a novel system of CdS nanoparticles embedded in borophosphate glass matrix

Wageh, S.; El‐Nahas, Ahmed M.; Higazy, A. A.; Mahmoud, Mohamed A.

doi:10.1016/j.jallcom.2012.12.056

Cited by 20 publications

(3 citation statements)

References 46 publications

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“…The crystallite size is slightly decreased to 22 nm on further heat treatment at 400 °C possibly due to partial oxidation of nanoparticles. A similar trend of variation in crystallite size of CdS nanoparticles with annealing is reported by Wageh, S et al [11]. During the synthesis and annealing procedure, atoms may displace from their original position and may lead to set the strain in nanoparticles which is associated with Bragg's angle (θ) and β by the following relation (4)…”

Section: Crystallographic Analysissupporting

confidence: 71%

Investigating the Impact of Annealing Temperature on CdS Nanoparticles: Optimizing Solar Photovoltaic Efficiency

Kumar Mahato,

Chaudhuri,

Lal Patel

et al. 2024

IOP Conf. Ser.: Earth Environ. Sci.

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The development of solar photovoltaic (PV) technology in the era of nanotechnology plays a crucial role in the advancement of renewable energy technologies. CdS is a vibrant candidate for numerous applications and the properties of CdS nanoparticles could be tailored and enhanced by annealing treatment. The present work unveils the impact of air annealing temperature on the tailoring of microstructural and optical properties of CdS nanoparticles. A facile chemical co-precipitation technique is employed to synthesize the CdS nanoparticles followed by annealing at 200°C and 400°C for 1 hour. The XRD patterns exhibit that nanoparticles are crystallized in hexagonal wurtzite crystal structure with (002) and (101) preferred orientations depending upon the annealing condition where the interplanar spacing and crystallite size corresponds to preferred peaks concerned ranging from 3.15-3.34 Å and 13-24 nm, respectively. Optical analysis reveals that transmittance is found less than 20% up to 500 nm and then abruptly increases in higher visible regions. The absorbance of nanoparticles is improved with annealing whereas band gap decreased from 2.19 eV to 2.02 eV. EDS pattern of as-grown samples confirmed the impurity-free synthesis of CdS nanoparticles. The FESEM micrographs revealed the formation of nano spherical grains for as-grown samples while nanoflake-like grain structures are visible for 400°C annealed nanoparticles. The novelty of this study lies in its comprehensive exploration of the impact of annealing temperature on the microstructure and optical characteristics of CdS nanoparticles.

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Section: Crystallographic Analysissupporting

confidence: 71%

Investigating the Impact of Annealing Temperature on CdS Nanoparticles: Optimizing Solar Photovoltaic Efficiency

Kumar Mahato,

Chaudhuri,

Lal Patel

et al. 2024

IOP Conf. Ser.: Earth Environ. Sci.

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“…Further growth of these QDs is accelerated by prolonged thermal treatment at high temperatures due to Ostwald ripening. 1,26,27 A possible growth mechanism is schematically shown in Fig. 8.…”

Section: S-1 †)mentioning

confidence: 99%

A stable Bi₂S₃ quantum dot–glass nanosystem: size tuneable photocatalytic hydrogen production under solar light

et al. 2015

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The present work comprises a novel approach to design Bismuth sulfide (Bi 2 S 3 ) quantum dots (QD's) glass nanocomposite system by confining nano Bi 2 S 3 in designated glass composition for solar light driven hydrogen (H 2 ) production. Numerous methods have been reported for the synthesis of Bi 2 S 3 , however, we have demonstrated the synthesis of Bi 2 S 3 QD's (0.5-0.7%) in the silicatete glass using melt and quench method. X-Ray diffraction and electron diffraction patterns of glass nanosystem exhibits 10 orthorhombic crystallite system of the Bi 2 S 3 QD's. Transmission Electron Microscopy demonstrates that the 3-5 and 7-10 nm size Bi 2 S 3 QD's distributed homogeneously in a monodispersed form in the glass domain and on the surface with a ''partially embedded exposure'' configuration. The role of glass on control of size and shape of Bi 2 S 3 QD's and their effect on the photocatalytic hydrogen generation has been discussed. The utmost H 2 production i.e. 6418.8 µMole h -1 g -1 was achieved for the Bi 2 S 3 -glass 15 nanosystem under solar light irradiation.This glass nanosystem instruct an excellent photo stability against photocorrosion and also a facile catalytic function. Therefore, even a very small amount of Bi 2 S 3 QD's is able to photodecompose H 2 S and produce hydrogen under visible light.The salient features of this QD's glass nanosystem are reusability after simple washing, enhanced stability and remarkable catalytic activity. 20 65 characterized thoroughly for the investigation of structural and optical properties. The effect of Bi 2 S 3 QD's size on the hydrogen production has been demonstrated for the first time. It is

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“…Consequently, semiconductor nanoparticles are good candidates for future electronic and optical devices. Thus, many researchers have extensively studied the preparation and characterization of semiconductor nanoparticles [1][2][3][4][5][6][7][8][9][10][11].…”

Section: Introductionmentioning

confidence: 99%

Structure and optical properties of capped and uncapped CdS nanoparticles prepared in aqueous medium

Wageh

Maize

2014

J Mater Sci: Mater Electron

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We have prepared the hexagonal structure of CdS nanoparticles in an aqueous solution with different sizes and varied surface compositions by using fixed molar ratio of the starting precursors in the presence of capping molecules. In addition, we have prepared uncapped CdS nanoparticles by cadmium chloride and thiourea at low temperature. We showed that the environmental conditions and the type of the aqueous medium are the effective parameters for the exchange of the nanoparticle size. The prepared nanoparticles have sizes in the range from 25 to 100 Å . We have compared the experimentally determined size of CdS nanoparticles with that determined by theoretical calculations. The comparison showed that the size determined by Scherrer's equation is fitted well with the empirical tight binding calculations, and that the effective mass approximation yields size values is in good agreement with the size estimated by high resolution transmission electron microscopy. Photoluminescence spectroscopy revealed that the nanoparticles with stoichiometries composition S/Cd * 1 have a high intensity band edge emission in the blue region for the capped nanoparticles and green emission for the uncapped nanoparticles.

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Preparation and characterization of a novel system of CdS nanoparticles embedded in borophosphate glass matrix

Cited by 20 publications

References 46 publications

Investigating the Impact of Annealing Temperature on CdS Nanoparticles: Optimizing Solar Photovoltaic Efficiency

Investigating the Impact of Annealing Temperature on CdS Nanoparticles: Optimizing Solar Photovoltaic Efficiency

A stable Bi₂S₃ quantum dot–glass nanosystem: size tuneable photocatalytic hydrogen production under solar light

Structure and optical properties of capped and uncapped CdS nanoparticles prepared in aqueous medium

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Preparation and characterization of a novel system of CdS nanoparticles embedded in borophosphate glass matrix

Cited by 20 publications

References 46 publications

Investigating the Impact of Annealing Temperature on CdS Nanoparticles: Optimizing Solar Photovoltaic Efficiency

Investigating the Impact of Annealing Temperature on CdS Nanoparticles: Optimizing Solar Photovoltaic Efficiency

A stable Bi2S3 quantum dot–glass nanosystem: size tuneable photocatalytic hydrogen production under solar light

Structure and optical properties of capped and uncapped CdS nanoparticles prepared in aqueous medium

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A stable Bi₂S₃ quantum dot–glass nanosystem: size tuneable photocatalytic hydrogen production under solar light