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The manufacture,physical characterization,environmental applications and cytotoxicity properties of nanocomposites consisting of CuO/CeO2 nano-rare earth composite materials prepared using the coprecipitation method at molar ratio of 6:4 with aqueous solutions of copper nitrate and cerium nitrate were reported.The performance of the selective catalytic oxidation of ammonia to N2(NH3-SCO) over a CuO/CeO2 nano-rare earth composite materials in a tubular fixed-bed reactor(TFBR) at temperatures from 423 to 673 K in the presence of oxygen was elucidated.The catalytic redox behavior was determined by cyclic voltammetry(CV).The nanocomposite particles were characterized by TEM,with a tiny particle size around 10 nm with high dispersion phenomena.Further,cell cytotoxicity and the percentage cell survival were determined by using 3-(4,5-dimethylthiazol-2-yl)-5(3-carboxymethoxyphenol)-2-(4-sulfophenyl)-2H-tetra-zolium(MTS) assay on human lung MRC-5 cell line.Experimental results showed that no apparent cytotoxicity was observed when the MRC-5 was exposed to the CuO/CeO2 nanocomposite materials.
The manufacture, physical characterization, environmental applications and cytotoxicity properties of nanocomposites consisting of CuO / CeO2 nano-rare earth composite materials prepared using the coprecipitation method at molar ratio of 6: 4 with aqueous solutions of copper nitrate and cerium nitrate were reported. Performance of the selective catalytic oxidation of ammonia to N2 (NH3-SCO) over a CuO / CeO2 nano-rare earth composite materials in a tubular fixed-bed reactor (TFBR) at temperatures from 423 to 673 K in the presence of oxygen was elucidated. The catalytic redox behavior was determined by cyclic voltammetry (CV). The nanocomposite particles were characterized by TEM, with a tiny particle size around 10 nm with high dispersion phenomena. Further, cell cytotoxicity and the percentage cell survival were determined by using 3- ( 4,5-dimethylthiazol-2-yl) -5 (3-carboxymethoxyphenol) -2- (4-sulfophenyl) -2H tetra tetrazolium (MTS) assay on human lung MRC- pparent cytotoxicity was observed when the MRC-5 was exposed to the CuO / CeO2 nanocomposite materials.