SusChemE 2015
International Conference on Sustainable Chemistry & Engineering
October 8-9, 2015, Hotel Lalit, Mumbai
Synthesis, Characterization and Application of Calcium Peroxide Nanoparticles
Sapana S. Madan, Kailas. L.Wasewar
Advanced Separation and Analytical Laboratory, Department of Chemical Engineering,
Visvesvaraya National Institute of Technology (VNIT)
Nagpur - 440010, Maharashtra, INDIA, +91
E-mail addresses: dhara0005@gmail.com, k_wasewar@rediffmail.com
1. Introduction
Nanoparticles reveals unique properties such as a high surface area, particles require in nanosize and dispersed
form with no agglomeration. Two methods generally used for the preparation of metal nanoparticles the first one
is physical and second one is chemical [1,2]. Calcium peroxide (CaO2) is used in nanosize for the remediation of
contaminated soil and water. Calcium peroxide nanoparticles are synthesized by using chemical precipitation
methods [3].
2. Material and Methods
3 g CaCl2 was mixed in 30 mL of distilled water with adding of NH 3.H2O 15 mL and PEG 200 120 mL After
that 30% of H2O2 was drop wise added (3 drops per minute). Reaction takes place at 2 h and a yellow color
solution form. NaOH added in solution and white color suspension get obtained. The precipitate was separated
by centrifuge (10000 rpm) for 5 min and subsequently it was washed by NaOH and distilled water. At last, CaO 2
nanoparticles were dried under vacuum at 80oC for 2 h.
3. Significant Results and Discussion
Synthesis of nanoparticles confirmed by characterized the sample using various
techniques such as XRD, UV, TGA, EDX, TEM etc. XRD pattern shows the
diffraction peak with 2θ values of 30.4, 35.9, 47.7, 53.5, and 60.7confirms by standard
[JCPDS file no. 03-0865]. XRD shows the tetragonal structure. Sharpness of the peaks
shows good crystal growth of the peroxide nanoparticles. The patterns of CaO 2
nanoparticles show broadening of peak and it specifies the particles in nano size. CaO 2
sample confirmed by UV. Thermal stability of CaO2 nanoparticles was investigated by
TGA. Chemical purity and stoichiometry of CaO2 nanoparticles was observed by EDS.
35.09 % of Ca ion and 64.91% O ion by mass are present in the sample. Figure 1
shows the TEM image of the synthesized CaO2 nanoparticles. TEM studies were
carried out to find out the accurate particle size of synthesized CaO 2 nanoparticles.
TEM images illustrates that CaO2 nanoparticles are having particle size in the range of
5-15 nm. From the Figure 1, it can be seen that the nanoparticles are CaO2 spherical in
shape with and nanocrystalline.
Figure 1: TEM image of synthesized CaO2 nanoparticles
4. Conclusions
CaO2 nanoparticles are a simple, low cost, ease to synthesize, economical and environment friendly. The result
of TEM showed the size of 3-8 nm for synthesized CaO2 nanoparticles using a chemical precipitation technique.
References
[1] G. Khomutov, S. Gubin,. Mater. Sci. Eng. C 22 (2002) 141.
[2] M. Oliveira, D. Ugarte, D. Zanchet, A. Zarbin, J. Colloid Interface Sci. 292 (2005) 429.
[3] J. Khodaveisi, H. Banejad, A. Afkhami, E. Olyaieb, S. Lashgaria, R. Dashti, J. of Hazard. Mater. 192 (2011)
1437– 1440.