Structural, optical and antibacterial activity studies of Ce-doped ZnO nanoparticles prepared by wet-chemical method

Author(s):  
R. Bomila ◽  
S. Srinivasan ◽  
A. Venkatesan ◽  
B. Bharath ◽  
K. Perinbam
2013 ◽  
Vol 4 ◽  
pp. 763-770 ◽  
Author(s):  
Sini Kuriakose ◽  
Neha Bhardwaj ◽  
Jaspal Singh ◽  
Biswarup Satpati ◽  
Satyabrata Mohapatra

Flower-like ZnO nanostructures were synthesized by a facile wet chemical method. Structural, optical and photocatalytic properties of these nanostructures have been studied by X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), photoluminescence (PL) and UV–vis absorption spectroscopy. SEM and TEM studies revealed flower-like structures consisting of nanosheets, formed due to oriented attachment of ZnO nanoparticles. Flower-like ZnO structures showed enhanced photocatalytic activity towards sun-light driven photodegradation of methylene blue dye (MB) as compared to ZnO nanoparticles. XRD, UV–vis absorption, PL, FTIR and TEM studies revealed the formation of Zn(OH)2 surface layer on ZnO nanostructures upon ageing. We demonstrate that the formation of a passivating Zn(OH)2 surface layer on the ZnO nanostructures upon ageing deteriorates their efficiency to photocatalytically degrade of MB.


RSC Advances ◽  
2016 ◽  
Vol 6 (63) ◽  
pp. 58236-58246 ◽  
Author(s):  
Hasan B. Balkhoyor ◽  
Mohammed M. Rahman ◽  
Abdullah M. Asiri

Various Ce-doped ZnO nanostructures (Ce/ZnO NSs) were prepared by a facile wet chemical method using reducing agents in alkaline medium.


2013 ◽  
Vol 685 ◽  
pp. 119-122 ◽  
Author(s):  
Tahseen H. Mubarak ◽  
Karim H. Hassan ◽  
Zena Mohammed Ali Abbas

The application of nanoparticles in the processes of making commercial products has increased in recent years due to their unique physical and chemical properties. Materials whose crystallites, particle sizes are smaller than 100 nm are commonly named nanocrystalline, nanostructured, nanosized materials. There are many methods used for the preparation of nanomaterials. We use is a method which is easy if compared to other methods with the chemicals required for these methods are available and cheap. Nano zinc oxide has been prepared by wet chemical method from zinc nitrate and using sodium bicarbonate as precipitation agent. The resulting nanopowders were characterized by X-ray diffraction (XRD), scanning electron microscope (SEM).The particle size measurement using XRD Scherer’s formula calculations confirms that the crystallite size of the ZnO nanoparticles range from 41 to 67 nm and depending on calcinations temperature. SEM micrographs reveals less number of pores with smaller lump size in addition to clearly showing the micro structural homogeneity and remarkably dense mode of packing of grains of ZnO nanoparticles with minimum porosity.


2011 ◽  
Vol 43 (6) ◽  
pp. 1166-1170 ◽  
Author(s):  
R. Saravana Kumar ◽  
R. Sathyamoorthy ◽  
P. Sudhagar ◽  
P. Matheswaran ◽  
C.P. Hrudhya ◽  
...  

2006 ◽  
Vol 41 (15) ◽  
pp. 4706-4712 ◽  
Author(s):  
O. D. Jayakumar ◽  
I. K. Gopalakrishnan ◽  
S. K. Kulshreshtha

RSC Advances ◽  
2016 ◽  
Vol 6 (106) ◽  
pp. 104318-104324 ◽  
Author(s):  
Amit Kumar Rana ◽  
Prashant Bankar ◽  
Yogendra Kumar ◽  
Mahendra A. More ◽  
Dattatray J. Late ◽  
...  

In this study, we report an enhancement in the field emission (FE) properties of ZnO nanostructures obtained by doping with Ni at a base pressure of ∼1 × 10−8 mbar, which were grown by a simple wet chemical process.


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