One-pot sono-enhanced EG/EtOH-thermal design of nano-structured bismuth oxide formate and bismuth molybdenum oxide and their competitive evaluation in hetero-photocatalytic deletion of RhB under simulated sunlight

In the present study, bismuth oxide formate (BiOCOOH) and bismuth molybdenum oxide(Bi MoO ) nanophotocatalysts have been prepared by onepot sono-enhanced EG/EtOH-thermal synthesisforthe elimination of rhodamine B (RhB) under simulated sunlight. In comparison to the previousworks, as-synthesized BiOCOOH showed higher photodegradation potential towards RhB pollutantowing to the effect of ultrasound waves. Herein, BiOCOOH could degrade 10 mg/LRhBto96.91%unexpectedly during 120 min under simulated sunlight. But, the decolourization capability ofBi MoO over 10 mg/L RhB was calculated to be68%. Furthermore, BiOCOOH and Bi MoO as layered nanophotocatalysts have shown unique morphologies due to the presence of two solvents (ethylene glycol and ethanol) and the use of ultrasonic waves during synthesis which affected the growth of crystals and their sizes. Moreover, crystallographic and morphological analyses are used to demonstrate the truesynthesis of nanophotocatalysts and the discussion of results gained.

Author(s): Mahdiyeh Mohammadzadeh, Mohammad Haghighi* and Maryam Shabani

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