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Nano-sized superparamagnetic zirconia material (ZrO 2 /SiO 2 /Fe 3 O 4 , SPMZ) was applied for the sorption of fluoride from water and simulated industrial wastewater. The experiments showed that SPMZ possesses a satisfactory chemical stability at moderate acidic and basic conditions. Sorption and desorption develop very fast so that the equilibration is attained in...
To solve the broadcast storm problem, some researchers proposed an approach that the dominating set is selected as the forwarding nodes to rebroadcast the packet to control the number of packets effectively. Then, the number of packets transmission, the power consumption, and the contention and the collision problem can be reduced. However, their methods may need more overhead for creating the dominating...
A novel superparamagnetic zirconia (ZrO 2 /SiO 2 /Fe 3 O 4 , SPMZ) material has been successfully synthesized via three sequential steps: chemical precipitation of magnetite, sol–gel coating of silica and sol–gel covering of zriconia. The physicochemical properties were characterized with N 2 adsorption at 77K, scanning electron microscopy with energy-dispersive...
In this study, nanocrystalline TiO 2 /Ag composite thin films were prepared by a sol–gel spin-coating technique. By introducing polystyrene (PS) spheres into the precursor solution, porous TiO 2 /Ag thin films were prepared after calcination at a temperature of 500 °C for 4 h. Three different sizes (50, 200, and 400 nm) of PS spheres were used to prepare porous TiO 2 films...
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