Synthesis of pure and doped SnO2 and NiO nanoparticles and evaluation of their photocatalytic activity

Sery, Alaa A.; Mohamed, Walied A.A.; Hammad, F. F.; Khalil, Mostafa M.H.; Farag, Hala K.

doi:10.1016/j.matchemphys.2021.125190

Cited by 20 publications

(4 citation statements)

References 21 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…It records the highest absorbance, and the absorption edge shifts towards high energies (Blue Shift) due to the occupancy of copper ions (Cu ions) compensating sites within the composition (NiO: Sn), which caused the homogeneity of the composition and reduced defects, and thus the lack of light scattering from the surface of the grains [17], and that the increase in the absorbance values of the grafted samples compared to the non-grafted samples may be due to the contribution of tin ions (Sn ions) and their occupation of inter-sites in the composition of the NiO: Cu lattice, which leads to an increase in the values of crystal and grain size [18], FE-SEM images and XRD measurements support this.…”

Section: Field Emission-scanning Electron Microscopy (Fe-sem)mentioning

confidence: 99%

The Effect of Double Doping with Copper and Tin on the Structural and Optical Properties of Nickel Oxide Nanoparticles Prepared by Sol-Gel Method

2023

acad. sci. j.

View full text Add to dashboard Cite

This work used the Sol-Gel method to prepare NiO nanoparticles that were both undoped and doped by Copper and Tin. According to the XRD data, every sample is polycrystalline.Scherrer's equation was used to calculate the crystallite size of the samples, and it was found that the crystallite size (7.2841, 4.97262, 4.97262, 10.07331, 5.63056 and 5.39887 nm) for undoped (NiO), and doped (d1, d2, d3, d4 and d5) respectively, were d is the doping ratio.According to an FTIR spectrum of NiO NPs, showed absorption peaks at the two regions (1566 and 1332 cm -1 ) Due to the bonds (H-O-H, C-H) respectively, FESEM image for undoped and doped of NiO nanoparticle, shows that the structure with a spherical shape. The spectrum also showed absorption peaks in the region (400-500 cm -1 ) which is due to the stretching vibration of the (Ni-O) band. The percentage filled by grafting atoms (Cu + Sn). Optical measurements show that the transmittance increases as wavelength increases. The photoluminescence measurement shows that the sample before doping has a peak value of (489.3 nm), and the double-grafted grains record peak values at (367.2, 368.1, 681.1, 582.2, 772.7, 438.6 nm) for pure NiO, d1, d2, d3, d4 and d5) respectively, and the value of the energy gap was (3.377, 3.369, 1.821, 2.129, 1.704 and 2.827 eV) for (pure NiO, d1, d2, d3, d4 and d5) respectively.

show abstract

Section: Field Emission-scanning Electron Microscopy (Fe-sem)mentioning

confidence: 99%

The Effect of Double Doping with Copper and Tin on the Structural and Optical Properties of Nickel Oxide Nanoparticles Prepared by Sol-Gel Method

2023

acad. sci. j.

View full text Add to dashboard Cite

show abstract

“…Its high band gap makes this material in its usual undoped condition unsuitable for photocatalytic application, in addition to its fast electron-hole combination characteristics [69,70]. However, the addition of dopants in the SnO 2 structure can modulate its electronic structure and even create local polarizations capable of intensifying its photocatalytic properties [71,72]. One of the main reasons why doping the SnO 2 usually leads to improved photocatalytic activity is based on the creation of surface oxygen vacancies.…”

Section: Sno 2 and D-sno 2 Photocatalysismentioning

confidence: 99%

Doped Tin Dioxide (d-SnO2) and Its Nanostructures: Review of the Theoretical Aspects, Photocatalytic and Biomedical Applications

Pinto

Nogueira

Dalmaschio

et al. 2022

Solids

View full text Add to dashboard Cite

Nanomaterials based on metal oxides are extensively studied for several applications due to their versatility. Improvements in their performances can be obtained due to specific structural modifications. One possible modification is by doping the crystal structure, which can affect the materials structure and properties, especially in nanosized particles. Electronic features are among the properties that can be modified through the doping process, consequently morphological and optical parameters can also be controlled by this process. In this sense, this review presents some modifications to tin dioxide (SnO2), one the most studied materials, mainly through the doping process and their impact on several properties. The article starts by describing the SnO2 structural features and the computational models used to explain the role of the doping process on these features. Based on those models, some applications of doped SnO2, such as photocatalytic degradation of pollutants, CO2 reduction, and desulfurization of fossil fuels are presented and discussed. Additionally, the review describes many biological applications related to antimicrobial activity for doped SnO2 and its nanostructures. Although most of the examples presented in this article are based on the doped SnO2, it also presents examples related to SnO2 composites with other nanomaterials forming heterojunctions. The metal oxides SnO2, doped-SnO2 and their nanostructures are promising materials, with results reported in many fields presented in this review, such as theoretical and computational chemistry, environmental remediation, nanoparticle morphology control, fossil fuels improvement, and biomedical applications. Although widely explored, there are still fields for innovation and advances with tin dioxide nanostructures, for example, in transparent conducting oxides, in forensics as materials for latent fingerprints visualization, and sensors in medicine for detection of exhaled volatile organic compounds. Therefore, this article aims to be a reference regarding correlating the doping processes and the properties presented by the SnO2 nanostructures.

show abstract

“…To synthesize nanoparticles, researchers have employed the hydrothermal approach [ 3 ], combustion [ 4 ], coprecipitation [ 5 ], the sol-gel method [ 6 ], and the green method [ 7 ]. Due to the utilization of hazardous and harmful compounds, some NP synthesis pathways [ 8 , 9 ] using ionic liquids, pulsed laser [ 10 ], thermal decomposition [ 11 ], irradiation through microwaves [ 12 ], and so on, are not suitable for the safe fabrication of nanoparticles. As a result, in the field of nanoscience, a green method for synthesizing nanoparticles that are environmentally acceptable, harmless, and inexpensive is required.…”

Section: Introductionmentioning

confidence: 99%

Assessment of Structural, Optical, and Antibacterial Properties of Green Sn(Fe : Ni)O2 Nanoparticles Synthesized Using Azadirachta indica Leaf Extract

Aloufi

2023

Bioinorganic Chemistry and Applications

View full text Add to dashboard Cite

Metal oxide nanoparticles have attained notable recognition due to their interesting physicochemical properties. Although these nanoparticles can be synthesized using a variety of approaches, the biological method involving plant extracts is preferred since it provides a simple, uncomplicated, ecologically friendly, efficient, rapid, and economical way for synthesis. In this study, the Azadirachta indica leaf extract was used as a reducing agent, and a green process was used to synthesize tin(ferrous: nickel)dioxide (Sn(Fe : Ni)O2) nanoparticles. The synthesized nanoparticles were subjected to characterization by using X-ray diffraction (XRD), energy-dispersive X-ray (EDX) spectroscopy analysis, field emission scanning electron microscopy (FESEM), Fourier transform infrared (FTIR) spectroscopy, dynamic light scattering (DLS), and photoluminescence (PL) measurement. Furthermore, Sn(Fe : Ni)O2 nanoparticles were analyzed for their antimicrobial activity against Gram-positive and Gram-negative organisms including Staphylococcus aureus, Streptococcus pneumoniae, Bacillus subtilis, Klebsiella pneumoniae, Escherichia coli, and Pseudomonas aeruginosa bacterial strains. XRD patterns revealed that Sn(Fe : Ni)O2 nanoparticles exhibited a tetragonal structure. The hydrodynamic diameter of the nanoparticles was 143 nm, as confirmed by the DLS spectrum. The FESEM image showed the spherical form of the synthesized nanoparticles. Chemical composites and mapping analyses were performed through the EDAX spectrum. The Sn–O–Sn and Sn–O stretching bands were 615 cm−1 and 550 cm−1 in the FTIR spectrum, respectively. Various surface defects of the synthesized Sn(Fe : Ni)O2 nanoparticles were identified by photoluminescence spectra. Compared to traditional antibiotics like amoxicillin, the inhibition zone revealed that Sn(Fe : Ni)O2 nanoparticles displayed remarkable antibacterial activity against all tested organisms, indicating the valuable potential of nanoparticles in the healthcare industry.

show abstract

Synthesis of pure and doped SnO2 and NiO nanoparticles and evaluation of their photocatalytic activity

Cited by 20 publications

References 21 publications

The Effect of Double Doping with Copper and Tin on the Structural and Optical Properties of Nickel Oxide Nanoparticles Prepared by Sol-Gel Method

The Effect of Double Doping with Copper and Tin on the Structural and Optical Properties of Nickel Oxide Nanoparticles Prepared by Sol-Gel Method

Doped Tin Dioxide (d-SnO2) and Its Nanostructures: Review of the Theoretical Aspects, Photocatalytic and Biomedical Applications

Assessment of Structural, Optical, and Antibacterial Properties of Green Sn(Fe : Ni)O2 Nanoparticles Synthesized Using Azadirachta indica Leaf Extract

Contact Info

Product

Resources

About