La and H3PMo12O40 modified TiO2 multi-nanocatalysts were fabricated via a facile ultrasonic assistant sol-gel method using montmorillonoid as a carrier.The crystal structure,adsorption ability and optical absorption characteristics of the catalyst were characterized by many kinds of analysis technologies.In addition,methyl p-hydroxybenzoate (MPB) was selected as the degradation object to investigate the ultraviolet and visible light catalytic activities of LPM-TiO2.The results shown that the 100% of MPB(20mg/L) was degraded after 40min UV-light irradiation,about 95.7% of MPB can be degradation after 120min visible light irradiation.The remarkably enhanced photocatalytic degradation performance was mainly owing to the adding of La3+ and H3PMo12O40 can inhibit the recombination of the photogeneration electron and hole.And the stability results showed that the degradation rate can remain above 90% after 5 times reuse cycles of the photocatalyst.
Yang Shangzhi, Li Haishuai, Niu Zuoji, Shi Huixian
. Preparation and performance of TiO2 based multi-nanophotocatalyst on MPB degradation[J]. New Chemical Materials, 2020
, 48(11)
: 122
-126
.
DOI: 10.19817/j.cnki.issn 1006-3536.2020.11.027
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