首页|Role of amine-based fuel combination in conventional and microwave-assisted smoldering combustion for production of mesoporous hydroxyapatite with super adsorptive characteristics for separation of disperse dye
Role of amine-based fuel combination in conventional and microwave-assisted smoldering combustion for production of mesoporous hydroxyapatite with super adsorptive characteristics for separation of disperse dye
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NSTL
Elsevier
The effect of amine-based fuel combination, and smoldering combustion route on adsorptive characteristics of hydroxyapatite (HA) are the challenge of current study for separation of disperse dye. A systematic procedure, mixture design methodology, was used to determine the proper combination of urea-glycine-hexamine in the conventional (CSC), and microwave-assisted smoldering combustion (MSC) for one step fabrication of HA with maximal adsorption capacity. It was established that the ternary combination of used fuels, including the same proportions of glycine, and hexamine, 16.7 mol %, provided an adequate energy, > 7200 kJ mol(-1) for fabricating the poorly crystalline HA by CSC, allowed to achieve the maximal capacity, similar to 5000 mg g(-1). Glycine was identified as a proper fuel to produce spongy amorphous nanoparticles, 130 nm, predominantly containing HA, through MSC in which the microwave power should be controlled at 600 W. The product displayed the mesoporous structure with average pore diameter about 3.8 nm, due to releasing gaseous phase, 65.6 mol mol(-1) HA, providing a surface area around 72 m(2) g(-1) which is responsible for the surprised adsorptive properties. The microwave-assisted combustion facilitates the formation of HA with super adsorption properties because of operational simplicity which is completed within a shorter time due to uniform energy dissipation when is compared with the other methods.
NSTL
Elsevier
