MICROWAVES-ASSISTED CHEMICAL SYNTHESIS OF SILVER PHOSPHATE POWDER, ITS MORPHOLOGICAL CHANGE AND PHOTOCATALYTIC ACTIVITY WITH SUNLIGHT
Abstract and keywords
Abstract (English):
Three types of materials in silver phosphate powder were obtained by means of the microwaves-assisted chemical synthesis method. Each type of material in powder have a particle size and morphology characteristic, according has been subjected additional to thermal or surfactant treatment. The surfactant employed is sodium dodecyl sulfate and the treatment temperature was 200 OC. The material in powder obtained without any additional treatment, have size particle in micrometers and polyhedral morphology, while with the surfactant treatment the size particle is nano metric and its pseudo spherical morphology. The thermal treatment gives origin to powder particles with size micrometric and sub micrometric, buth with morphology of polyhedrons with shape corners and edges. The photocatalytic activity of these three materials is measure under sunlight to degradation of methylene blue in 10 ppm. The type of silver phosphate powder more efficient are the obtained by microwaves-assisted chemical synthesis with additional thermal treatment.

Keywords:
Polyhedral morphology, methylene blue, photoelectric effect
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