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Study on crystal facet regulation of bismuth vanadate and its degradation properties of tetracycline antibiotics
Received date: 2021-02-08
Online published: 2021-11-15
The monoclinic scheelite bismuth vanadate(m-BiVO4) catalytic material was synthesized by a solvothermal method and characterized by XRD,BET,SEM,TEM,etc.It was found that the morphology and crystal facet of BiVO4 could be con-trolled by the pH value of the reaction solution,and m-BiVO4 with preferentially exposed(010) facet(BVO-010) was pre-pared at pH=7.With chlortetracycline hydrochloride(CTC-HCl),oxytetracycline(OTC),tetracycline(TC) and tetracycline hydrochloride(TCN) solutions as target pollutants,the degradation performance of the samples was evaluated.It was disclosed that compared to m-BiVO4 that mainly exposed the thermodynamically more stable(-121) facets(BVO-121),BVO-010 ex-hibited more outstanding photocatalytic performance,and the degradation rates of CTC-HCl,OTC,TC,and TCN were 77.9%,79.2%,63.6%,and 73.9%,respectively after 150 min illumination,which was expected to treat wastewater containing antibiotic drugs.
Key words: BiVO4; crystal facet regulation; photocatalysis; tetracycline antibiotics
Suqi SHI , Shouchen ZHANG , Dijia ZHANG , Guiling NING , Junwei YE . Study on crystal facet regulation of bismuth vanadate and its degradation properties of tetracycline antibiotics[J]. Inorganic Chemicals Industry, 2021 , 53(11) : 114 -121 . DOI: 10.19964/j.issn.1006-4990.2021-0091
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