Inorganic Chemicals Industry >
Preparation and photocatalytic property of MoO3/g-C3N4 composite
Received date: 2020-04-26
Online published: 2020-11-24
Using melamine and ammonium molybdate tetrahydrate as precursors,a novel MoO3/g-C3N4 composite photocatalyst was prepared by hydrothermal method.The samples were characterized by X-ray diffraction（XRD）,infrared spectroscopy （FT-IR）,scanning electron microscopy（SEM）,X-ray photoelectron spectroscopy（XPS） and ultraviolet-visible diffuse reflectometer（DRS）.Characterization results showed that the optical absorption of the composites was enhanced when the rodlike MoO3 was loaded on the layered g-C3N4 surface.The experiment of photocatalytic degradation of methylene blue（MB） solution by material visible light showed that the heterojunction produced by MoO3 and g-C3N4 had better absorption light intensity and catalytic degradation performance,especially the 5%（mass fraction） MoO3/g-C3N4 composite photocatalytic degradation rate was the best,reaching 95.7%,higher than that of pure MoO3 and g-C3N4.Free radical and hole trapping experiments show that ·O2- was the main substance in photocatalytic reaction.The MoO3/g-C3N4 composite exhibited excellent stability in four reaction cycles.
Key words： molybdenum trioxide; carbon nitride; visible light; photocatalysis
Nan Yin , Chanlu Liu , Jin Zhang . Preparation and photocatalytic property of MoO3/g-C3N4 composite[J]. Inorganic Chemicals Industry, 2020 , 52(10) : 161 -165 . DOI: 10.11962/1006-4990.2019-0568
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