Structural and optical studies on Mg doped CdS nanoparticles by simple co-precipitation method

Abstract Multi-walled carbon nanotubes/Mg-doped ZnO (MWNTs/Zn1-xMgxO) nanohybrids were prepared by co-precipitation method, and their photocatalytic activity for methyl orange (MO) was studied. Experimental results showed that Mg-doped ZnO nanoparticles were successfully deposited on the surface of MWNTs under annealing at 450 °C and 550 °C. The resultant MWNTs/Zn0.9Mg0.1O nanohybrids had better photocatalytic activity for degradation of methyl orange than pure ZnO: the rates of MO photodegradation were 100 % and 30 % for 1 h, respectively. The enhancement in the photocatalytic activity was attributed to the excellent electronic properties of MWNTs and Mg-doping.

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Structural and optical studies of yttrium oxide nanoparticles synthesized by co-precipitation method

Materials Research Bulletin ◽

10.1016/j.materresbull.2010.05.020 ◽

2010 ◽

Vol 45 (9) ◽

pp. 1165-1170 ◽

Cited By ~ 56

Author(s):

Ramasamy Srinivasan ◽

Rajeswari Yogamalar ◽

Arumugam Chandra Bose

Keyword(s):

Yttrium Oxide ◽

Precipitation Method ◽

Oxide Nanoparticles ◽

Optical Studies ◽

Co Precipitation ◽

Yttrium Oxide Nanoparticles

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Structural and Optical Behaviour οf Ni Doped CdS Nanoparticles Synthesized by Chemical Co-Precipitation Method

Acta Physica Polonica A ◽

10.12693/aphyspola.120.a-52 ◽

2011 ◽

Vol 120 (6A) ◽

pp. A-52-A-54 ◽

Cited By ~ 10

Author(s):

K. Siva Kumar ◽

A. Divya ◽

P. Sreedhara Reddy ◽

S. Uthanna ◽

R. Martins ◽

...

Keyword(s):

Precipitation Method ◽

Cds Nanoparticles ◽

Optical Behaviour ◽

Co Precipitation

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Preparation and Electrochemical Performance of Mg-Doped LiNi0.4Co0.2Mn0.4O2 Cathode Materials by Urea Co-Precipitation

Key Engineering Materials ◽

10.4028/www.scientific.net/kem.519.152 ◽

2012 ◽

Vol 519 ◽

pp. 152-155 ◽

Cited By ~ 3

Author(s):

Qian Zhang ◽

Yan Sheng Zheng ◽

Sheng Kui Zhong

Keyword(s):

Electrochemical Performance ◽

Layered Structure ◽

Cathode Materials ◽

Precipitation Method ◽

Electrochemical Performances ◽

Sem Images ◽

Transfer Resistance ◽

Co Precipitation ◽

Charge Discharge ◽

Mg Doped

The Mg-doped LiNi0.4Co0.2-xMn0.4MgxO2 cathode materials (x=0, 0.01, 0.02 and 0.03) were synthesized by a urea co-precipitation method. Its structure and electrochemical properties were characterized by X-ray diffraction (XRD), scanning electron microscope (SEM), and electrochemical performance tests. XRD studies indicate that the Mg-doped LiNi0.4Co0.2Mn0.4O2 samples perform the same layered structure as the undoped LiNi0.4Co0.2Mn0.4O2. SEM images show that the particle size of Mg-doped LiNi0.4Co0.2Mn0.4O2 is smaller than the undoped LiNi0.4Co0.2Mn0.4O2 sample. Charge-discharge tests confirm that the rate capacity and cycling performance of LiNi0.4Co0.2-xMn0.4MgxO2 are improved by Mg-doped. The optimal doping content of Mg is x=0.02 in the LiNi0.4Co0.2-xMn0.4MgxO2 samples, which can achieve high initial charge-discharge capacity and good cyclic stability. The electrode reaction reversibility was enhanced, and the charge transfer resistance was decreased through the Mg-doping. The improved electrochemical performances of the Mg-doped LiNi0.4Co0.2Mn0.4O2 cathode materials are attributed to the addition of Mg2+ ion by stabilizing the layered structure.

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SYNTHESIS OF CdS NANOPARTICLES BY CHEMICAL Co-PRECIPITATION METHOD AND ITS COMPARATIVE ANALYSIS OF PARTICLE SIZE VIA STRUCTURAL AND OPTICAL CHARACTERIZATION

Indonesian Physical Review ◽

10.29303/ipr.v3i3.64 ◽

2020 ◽

Vol 3 (3) ◽

pp. 100

Author(s):

Syed Kaabir Ali ◽

Henna Wani ◽

Chandramani Upadhyay ◽

K.S.S.N. Sai Madhur ◽

Imran Khan ◽

...

Keyword(s):

Particle Size ◽

Lattice Strain ◽

Theoretical Calculations ◽

Average Particle Size ◽

Precipitation Method ◽

Cds Nanoparticles ◽

Deformation Model ◽

Average Particle ◽

Scherrer Equation ◽

Co Precipitation

CdS is an important wide bandgap chalcogenides most popularly studied for various optoelectronics and biosensing applications. In this study, CdS Nanoparticles (NPs) have been prepared successfully by chemical co-precipitation method, using cadmium acetate and sodium sulphide as precursors. A comparative study of average particle size calculated by Scherrer Plot, Uniform Deformation Model (UDM), Dynamic Light Scattering (DLS) analysis and Brus Model has been done here. The structural and optical behaviour of synthesized samples were investigated via X-ray diffraction (XRD), DLS and UV–Visible Spectroscopy. The XRD spectra of the prepared CdS NPs revealed the crystalline phase having cubic structure. The average particles size has been studied via Debye Scherrer equation and Scherrer Plot. For the theoretical calculations of particle size along with the induced lattice strain, considering the broadening effect of lattice strain, Williamson-Hall analysis was employed. Assuming the lattice strain to be isotropic in nature, UDM was applied for calculation. The particles size distribution profile in terms of volume as well as intensity was recorded using DLS analysis in ethanol medium at room temperature. Besides this, the energy bandgap was obtained by applying Tauc model in the recorded absorption spectra. The obtained value of bandgap was used in Brus model for estimating the average particle size. The obtained comparative results show that the average particle size of the prepared CdS NPs estimated from Scherrer equation, Scherrer plot, UDM plot and Brus model are almost similar and lies in the range of 2-5 nm whereas the results of DLS showed wide variation in the range of 40-600 nm.

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SYNTHESIS AND CHARACTERIZATION OF NICKEL DOPED CdS NANOPARTICLES

International Journal of Nanoscience ◽

10.1142/s0219581x12400066 ◽

2012 ◽

Vol 11 (03) ◽

pp. 1240006 ◽

Cited By ~ 4

Author(s):

B. SRINIVASA RAO ◽

V. RAJAGOPAL REDDY ◽

B. RAJESH KUMAR ◽

T. SUBBA RAO

Keyword(s):

Optical Properties ◽

Xrd Analysis ◽

Precipitation Method ◽

Cds Nanoparticles ◽

Ni Doping ◽

Visible Absorption ◽

Good Crystallinity ◽

Vis Spectroscopy ◽

Xrd Patterns ◽

Co Precipitation

In the present work, conventional chemical co-precipitation method was employed for the preparation of Nickel (2, 4, 6, 8 and 10 at.% of Ni ) doped CdS nanoparticles. The crystallite size and lattice parameters for each sample are determined from X-ray diffraction (XRD) analysis. From XRD patterns the broadening of the diffraction peaks indicates the nanostructure nature of the samples. Surface morphology of the samples was studied by scanning electron microscope (SEM). UV-Visible absorption spectra for prepared samples are monitored for the optical properties of quantum sized particles. All nanoparticles formed lie in the size quantization regime and exhibit good crystallinity. Optical properties have been observed via UV-Vis spectroscopy and Photoluminescence spectra (PL) spectra. Ni doping in CdS is found to modify the luminescence properties by creating shallow acceptor states.

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