Enhanced photocatalytic activity of ZnO nanorods grown on Ga doped seed layer

Ali, Anwar; Zhao, Xiaopeng; Ali, Aamir; Duan, Libing; Niu, Hongru; Peng, Cheng; Wang, Yajun; Hou, Sen

doi:10.1016/j.spmi.2015.02.031

Cited by 29 publications

(9 citation statements)

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“…They react with MB dye solution and break the all the chemical bonding and de-colorize the MB into colour-less form [ 68 ]. The degradation of MB using Zn/Ni doped CdS catalyst have been made by the subsequent reactions [ 69 ]: …”

Section: Resultsmentioning

confidence: 99%

Influence of Ni2+ ions on the structural, morphological, photoluminescence, photo-catalytic and anti-bacterial studies of Cd0.9Zn0.1S nanostructures

Prabu

Jesuraj

Muthukumaran³

2021

J Mater Sci: Mater Electron

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The present investigation reported the controlled synthesis of Cd 0.9 Zn 0.1 S and Cd 0.89 Zn 0.1 Ni 0.01 S nanostructures by simple chemical co-precipitation route. The XRD analysis confirmed the cubic structure of CdS on Zn doped CdS and Zn, Ni dual doped CdS without any secondary/impurity phases and no alteration in CdS cubic phase was noticed by Zn/Ni addition. The shrinkage of crystallite size from 69 to 43 Å and the variation in lattice constants and micro-strain were described by the addition of Ni and the defects associated with Ni 2+ ions. Microstructural and optical studies of the prepared films were carried out using scanning electron microscope (SEM), UV-visible spectrometer and photoluminescence (PL) spectra. The enhanced optical absorbance in the visible wavelength and the reduced energy gap by Ni substitution showed that Cd 0.89 Zn 0.1 Ni 0.01 S nanostructures are useful to improve the efficiency of opto-electronic devices. The functional groups of Cd-S/Zn-Cd-S/Zn/Ni-Cd-S and their chemical bonding were verified by Fourier transform infrared (FTIR) studies. The elevated visible PL emissions such as blue and green emissions by Ni addition was explained by decreasing of crystallite size and generation of more defects. Zn, Ni dual doped CdS nanostructures are identified as the probable an efficient photo-catalyst for the degradation of methylene blue dye. The liberation of more charge carriers, better visible absorbance, improved surface to volume ratio and the creation of more defects are accountable for the current photo-catalytic activity in Zn/Ni doped CdS which exhibited better photo-catalytic stability after sex cycling process. The better bacterial killing ability is noticed in Ni doped Cd 0.9 Zn 0.1 S nanostructure which is due to the collective effect of lower particle/grain size and also higher ROS producing capacity.

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Section: Resultsmentioning

confidence: 99%

Influence of Ni2+ ions on the structural, morphological, photoluminescence, photo-catalytic and anti-bacterial studies of Cd0.9Zn0.1S nanostructures

Prabu

Jesuraj

Muthukumaran³

2021

J Mater Sci: Mater Electron

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“…This illustrates that both Ga and Cu are dispersed on the surface rather than present inside the bulk. [39]. It can be deduced that when optimum amount of Ga and Cu was used, they produce a synergistic effect that facilitates efficient charge carriers to participate in the photocatalytic activity.…”

Section: Elemental Analysismentioning

confidence: 99%

Preparation of High Activity Ga and Cu Doped ZnS by Hydrothermal Method for Hydrogen Production under Visible Light Irradiation

Kimi

Yuliati

Shamsuddin

2015

Journal of Nanomaterials

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Ga(0.1),Cu(x)-ZnS (x=0.01, 0.03, 0.05) photocatalysts were successfully synthesized by hydrothermal method. The synthesized Ga and Cu codoped ZnS photocatalysts showed photocatalytic property effective for hydrogen production from aqueous solution containing Na2SO3and Na2S as sacrificial reagent under visible light irradiation. The rate of hydrogen production was found to be strongly dependent on Cu doping content. The highest photocatalytic activity is observed for Ga(0.1),Cu(0.01)-ZnS with hydrogen production rate of 114 µmol/h. The addition of Ga as codoped increased the photocatalytic activity to 58 times as compared to single doped Cu-ZnS. The Ga and Cu codoped ZnS photocatalysts are also stable under long irradiation. The enhancement in the photocatalytic activity of Ga and Cu codoped photocatalyst can be attributed to the synergistic effect between Ga and Cu. The photocatalytic activity was greatly enhanced with the addition of 0.5 wt% Ru as cocatalyst with a hydrogen production rate of 744 µmol/h.

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“…Degradation mechanism of MB dye using Zn 2+ /Ni 2+ -CdS catalyst is described by the three step reactions [71]: 2 ) + MB → Degradation product…”

Section: Photo-catalytic Mechanismmentioning

confidence: 99%

Enhanced Photo-Catalytic and Antibacterial Properties of Ni-Doped Cd0.9Zn0.1S Nanostructures

Jothi¹,

Ganesh

Muthukumaran³

et al. 2021

J Inorg Organomet Polym

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The present work describe the synthesis of Cd 0.9 Zn 0.1 S and Cd 0.87 Zn 0.1 Ni 0.03 S nanostructures by chemical co-precipitation method. The XRD profile proved the cubic crystal structure of the samples without any impurity related phases. The reduced size from 63 to 51 Å and the dissimilarities in lattice parameters and micro-strain has been discussed by Ni addition in Cd 0.87 Zn 0.1 Ni 0.03 S structure. The noticed anomalous optical studies and the elevated transmittance at Ni doped sample suggested them for the fabrication of efficient opto-electronic devices. The energy gap reduction during the substitution of Ni = 3% is explained by the generation of extra energy levels associated with defects within the two bands. The release of additional charge carriers, improved optical property, reduced particle size and more defect generation are responsible for the enhanced photo-catalytic performance of Ni doped Cd 0.9 Zn 0.1 S. The enhanced anti-bacterial capacity in Cd 0.87 Zn 0.1 Ni 0.03 S is described by the collective response of reduced particle size and higher reactive oxygen species (ROS) like O 2 ⋅− , H 2 O 2 and OH ⋅ generating capacity.

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Enhanced photocatalytic activity of ZnO nanorods grown on Ga doped seed layer

Cited by 29 publications

References 50 publications

Influence of Ni2+ ions on the structural, morphological, photoluminescence, photo-catalytic and anti-bacterial studies of Cd0.9Zn0.1S nanostructures

Influence of Ni2+ ions on the structural, morphological, photoluminescence, photo-catalytic and anti-bacterial studies of Cd0.9Zn0.1S nanostructures

Preparation of High Activity Ga and Cu Doped ZnS by Hydrothermal Method for Hydrogen Production under Visible Light Irradiation

Enhanced Photo-Catalytic and Antibacterial Properties of Ni-Doped Cd0.9Zn0.1S Nanostructures

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