Tuning of energy gap, structural, FTIR and photoluminescence examination of Ni, Sn dual doped ZnO nanoparticles

Veerasubam, R.; Muthukumaran, Shobha

doi:10.1088/2053-1591/aaf986

Cited by 14 publications

(3 citation statements)

References 53 publications

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“…Cyclic voltammetric (CV) analyses were employed to investigate the electrochemical behaviour of WO 3 nanoparticles and WO 3 –MgO nanocomposite. The redox peaks in the CVs indicate the stored charges, which could be associated with faradaic redox reactions 50 and also showing a better interconnected network with good porosity, thereby leading to better mobilization of ions. 51 The CV of WO 3 at a scan rate of 200 mV s −1 (Fig.…”

Section: Resultsmentioning

confidence: 99%

Deep eutectic solvent mediated synthesis and fabrication of a WO₃–MgO nanocomposite as an electrode material for energy storage applications

Joel

Antony

et al. 2023

New J. Chem.

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Section: Resultsmentioning

confidence: 99%

Deep eutectic solvent mediated synthesis and fabrication of a WO₃–MgO nanocomposite as an electrode material for energy storage applications

Joel

Antony

et al. 2023

New J. Chem.

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“…Figure 6 shows the PL spectra emissions of pure SnO 2 NPs and Zndoped SnO 2 NPs (1% and 5%) at room temperature at an excitation wavelength of 360 nm. Figure 6 reveals that all NPs showed the emission peaks at 433 nm, 456.13 nm, 504.37 nm, and 525.12 nm due to defect energy levels from oxygen vacancies and tin interstitials in the band gap of SnO 2 NPs [22,31,48]. The results show that the emission peak intensity of SnO 2 NPs decreased with increasing Zn doping.…”

Section: Pl Analysismentioning

confidence: 95%

Zn Doping Improves the Anticancer Efficacy of SnO2 Nanoparticles

Alanazi,

Alaizeri,

Lateef

et al. 2023

Applied Sciences

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Tin dioxide (SnO2) nanoparticles (NPs) can be applied in several ways due to their low cost, high surface-to-volume ratio, facile synthesis, and chemical stability. There is limited research on the biomedical application of SnO2-based nanostructures. This study aimed to investigate the role of Zn doping in relation to the anticancer potential of SnO2 NPs and to enhance the anticancer potential of SnO2 NPs through Z doping. Pure SnO2 and Zn-doped SnO2 NPs (1% and 5%) were prepared using a modified sol–gel route. XRD, TEM, SEM, EDX, UV-Vis, FTIR, and PL techniques were used to characterize the physicochemical properties of produced NPs. XRD analysis revealed that the crystalline size and phase composition of pure SnO2 increased after the addition of Zn. The spherical shape and homogenous distribution of these NPs were confirmed using TEM and SEM techniques. EDX analysis confirmed the Sn, Zn, and O elements in Zn-SnO2 NPs without impurities. Zn doping decreased the band gap energy of SnO2 NPs. The PL study indicated a reduction in the recombination rate of charges (electrons/holes) in SnO2 NPs after Zn doping. In vitro studies showed that the anticancer efficacy of SnO2 NPs increased with increasing levels of Zn doping in breast cancer MCF-7 cells. Moreover, pure and Zn-doped SnO2 NPs showed good cytocompatibility in HUVECs. This study emphasizes the need for additional investigation into the anticancer properties of Zn-SnO2 nanoparticles in various cancer cell lines and appropriate animal models.

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“…This implies incorporation of Al and Cu at Zn-O site by creating Al-O and Cu-O bonds. Presence of carbon related bonds is associated with multiple sources that include traces of ethanol precursor, atmospheric CO 2 and presence of carbon due to high temperature annealing [45][46][47][48].…”

Section: Ftir Spectramentioning

confidence: 99%

Band gap reduction and quenching of p-d exchange interaction in sol-gel derived Zn(Al,Cu)O nanostructures

et al. 2021

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The objective of the present study is to address the gap in the fundamental knowledge on the effect of doping and co-doping in ZnO nanostructures. In this regard, we explore the significant impact of Al- and Cu co-doping on band-gap and associated changes in the ZnO system. Sol-gel co-precipitation was used to synthesize ZnO-based nanostructures to accomplish the objective. Crystallite size determined by XRD was in the range of 6.44-37.58 nm and the lattice constant, c, initially decreased with co-doping, accompanied by an increase. Strong co-doping with Cu altered the nature of microstrain from tensile to compressive. FTIR studies predicted that Al and Cu were incorporated at Zn-O site through the formation of Al-O and Cu-O bonds, while UV-vis studies suggested the reduction of the band-gap when Al and Cu were incorporated in ZnO. The underlying reason was Cu-3d and O-2p exchange interaction in Zn(Al,Cu)O system. Quenching of this exchange interaction occurred in the presence of specific combination of dopant and co-dopant, along with blocking of the low energy transitions, eventually leading to a band-gap slightly greater than undoped ZnO. Furthermore, the emission peak observed in the photoluminescence spectra implied redshift induced by Al-doping, which was not influenced on Cu co-doping. Another important observation was the presence of ferromagnetic character in all samples, where saturation magnetization decreased with the increase in Al and Cu content in ZnO matrix, a behaviour attributed to anti-ferromagnetic coupling of spins of Cu ions at the substitutional sites of Zn-O. Lastly, electron microscopy revealed that the morphology of undoped ZnO transformed from granular to sand-rose on doping with Al, while Cu co-doping led to the formation of heavy clusters. The new insights on the band-gap reduction and associated structural changes in doped ZnO-based nanostructured materials have the potential for next generation of spintronic devices.

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Tuning of energy gap, structural, FTIR and photoluminescence examination of Ni, Sn dual doped ZnO nanoparticles

Cited by 14 publications

References 53 publications

Deep eutectic solvent mediated synthesis and fabrication of a WO₃–MgO nanocomposite as an electrode material for energy storage applications

Deep eutectic solvent mediated synthesis and fabrication of a WO₃–MgO nanocomposite as an electrode material for energy storage applications

Zn Doping Improves the Anticancer Efficacy of SnO2 Nanoparticles

Band gap reduction and quenching of p-d exchange interaction in sol-gel derived Zn(Al,Cu)O nanostructures

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Tuning of energy gap, structural, FTIR and photoluminescence examination of Ni, Sn dual doped ZnO nanoparticles

Cited by 14 publications

References 53 publications

Deep eutectic solvent mediated synthesis and fabrication of a WO3–MgO nanocomposite as an electrode material for energy storage applications

Deep eutectic solvent mediated synthesis and fabrication of a WO3–MgO nanocomposite as an electrode material for energy storage applications

Zn Doping Improves the Anticancer Efficacy of SnO2 Nanoparticles

Band gap reduction and quenching of p-d exchange interaction in sol-gel derived Zn(Al,Cu)O nanostructures

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Deep eutectic solvent mediated synthesis and fabrication of a WO₃–MgO nanocomposite as an electrode material for energy storage applications

Deep eutectic solvent mediated synthesis and fabrication of a WO₃–MgO nanocomposite as an electrode material for energy storage applications