Up-scalable synthesis of size-controlled copper ferrite nanocrystals by thermal treatment method

Zakiyah, Lall Beeharry; Saion, Elias; Al‐Hada, Naif Mohammed; Gharibshahi, Elham; Salem, Aeshah; Soltani, Nayereh; Gene, Salahudeen A.

doi:10.1016/j.mssp.2015.07.027

Cited by 97 publications

(27 citation statements)

References 36 publications

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“…The heat-based treatment method also provides the advantages of generating cassiterite, such as an approximately homogenous alignment and particle size dispersal. For professional regulating the extension of the nanoparticles and lowering the rate of accretion, the inclusion of PVP could be beneficial [45], [50]- [58].…”

Section: ) Tem Analysismentioning

confidence: 99%

The Effect of PVP Concentration on Particle Size, Morphological and Optical Properties of Cassiterite Nanoparticles

et al. 2020

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Different concentrations of polyvinylpyrrolidone (PVP) have been successfully employed to prepare high purity tetragonal cassiterite nanoparticles, and control the growth of particle size. The effect of PVP on the structural, morphological, size, composition, and optical properties of the prepared cassiterite nanoparticles has been investigated. It has been found that various characteristics of tetragonal cassiterite nanoparticles could be optimized by simply changing the values of PVP. The pure tetragonal cassiterite nanoparticles have been produced at the optimum calcination temperature. The XRD and SEM results indicated the structural and morphological properties of the tetragonal cassiterite nanoparticles, respectively. The particles' size and their distribution have been displayed by TEM images. The composition phase and the surface composition of the prepared samples have been evaluated via FTIR and XPS, respectively. The optical properties of the prepared tetragonal cassiterite nanoparticles have been studied using UV-vis and PL spectroscopy. Outcomes cassiterite nanoparticles are useful for antibacterial activity and application of solar energy. INDEX TERMS Cassiterite nanoparticles, polyvinylpyrrolidone, thermal treatment technique, energy applications.

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Section: ) Tem Analysismentioning

confidence: 99%

The Effect of PVP Concentration on Particle Size, Morphological and Optical Properties of Cassiterite Nanoparticles

et al. 2020

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“…It enables the production of nanoparticles with the desired properties because it can regulate particle size with high purity nanoparticles. In addition, it makes a limited use of chemicals with non-toxic effluences into the drainage system and therefore it does not cause damage to the environment [ 43 , 44 , 45 , 46 , 47 , 48 , 49 , 50 , 51 ]. Furthermore, it has the potential product to be employed on a large scale in industrial and biological applications.…”

Section: Introductionmentioning

confidence: 99%

Thermal Calcination-Based Production of SnO2 Nanopowder: An Analysis of SnO2 Nanoparticle Characteristics and Antibacterial Activities

et al. 2018

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SnO2 nanoparticle production using thermal treatment with tin(II) chloride dihydrate and polyvinylpyrrolidone capping agent precursor materials for calcination was investigated. Samples were analyzed using X-ray diffraction (XRD), Scanning Electron Microscopy (SEM), energy dispersive X-ray (EDX), transmission electron microscopy (TEM), Fourier Transform Infrared Spectroscopy (FT-IR), X-ray photoelectron spectroscopy (XPS), diffuse UV-vis reflectance spectra, photoluminescence (PL) spectra and the electron spin resonance (ESR). XRD analysis found tetragonal crystalline structures in the SnO2 nanoparticles generated through calcination. EDX and FT-IR spectroscopy phase analysis verified the derivation of the Sn and O in the SnO2 nanoparticle samples from the precursor materials. An average nanoparticle size of 4–15.5 nm was achieved by increasing calcination temperature from 500 °C to 800 °C, as confirmed through TEM. The valence state and surface composition of the resulting nanoparticle were analyzed using XPS. Diffuse UV-vis reflectance spectra were used to evaluate the optical energy gap using the Kubelka-Munk equation. Greater calcination temperature resulted in the energy band gap falling from 3.90 eV to 3.64 eV. PL spectra indicated a positive relationship between particle size and photoluminescence. Magnetic features were investigated through ESR, which revealed the presence of unpaired electrons. The magnetic field resonance decreases along with an increase of the g-factor value as the calcination temperature increased from 500 °C to 800 °C. Finally, Escherichia coli ATCC 25922 Gram (–ve) and Bacillus subtilis UPMC 1175 Gram (+ve) were used for in vitro evaluation of the tin oxide nanoparticle’s antibacterial activity. This work indicated that the zone of inhibition of 22 mm has good antibacterial activity toward the Gram-positive B. subtilis UPMC 1175.

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“…The average size of the synthesized ZnO nanoparticles are 34.14, 60.17, and 83.15 nm at 450, 500, and 600 °C respectively, which shows that the average particle size increased with increasing calcination temperature. These results indicate that the attained particle size increased with increasing calcination temperature due to the fact that as the temperature rises, many neighbouring particles were prone to fuse together to form larger particles as their surfaces melted [24][25][26]. At higher calcination temperatures above 600 °C, the average particle size increased to greater than 100 nm and they became microstructures.…”

Section: Resultsmentioning

confidence: 86%

A Simple Up-Scalable Thermal Treatment Method for Synthesis of ZnO Nanoparticles

Lee

Saion

Al‐Hada

et al. 2015

Metals

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Abstract:A simple thermal treatment method, utilizing only zinc nitrate, polyvinyl pyrrolidone (PVP), and deionized water, was used to synthesize ZnO nanoparticles, and their characteristics were investigated by various techniques. The TGA measurement demonstrated that the bulk of the capping agent PVP can be removed at temperatures higher than 500 °C and is consistent with the absence of the majority of PVP absorption peaks in the FT-IR spectra. The formation of almost pure ZnO nanoparticles was established by the presence of single absorption peak in the FT-IR spectra due to being only Zn-O bonds at calcination temperatures of 500 °C and above. The TEM images revealed that the nanoparticles have a spherical shape and the particle size increased from 60.1-83.1 nm with an increase in calcination temperatures from 500-600 °C. The XRD diffraction patterns indicated that the particles are of a wurzite lattice structure. The optical properties were determined by UV-Vis spectrophotometer, and it was found that the band gap of ZnO nanoparticles decreased from 3.249-3.239 eV with an increase in calcination temperature from 500-600 °C.

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Up-scalable synthesis of size-controlled copper ferrite nanocrystals by thermal treatment method

Cited by 97 publications

References 36 publications

The Effect of PVP Concentration on Particle Size, Morphological and Optical Properties of Cassiterite Nanoparticles

The Effect of PVP Concentration on Particle Size, Morphological and Optical Properties of Cassiterite Nanoparticles

Thermal Calcination-Based Production of SnO2 Nanopowder: An Analysis of SnO2 Nanoparticle Characteristics and Antibacterial Activities

A Simple Up-Scalable Thermal Treatment Method for Synthesis of ZnO Nanoparticles

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