Abstract
In this study,three-dimensional microspherical CQDs/Bi2MoO6 heterostructures were synthesized using a simple alcohol-thermal method.It was found that the CQDs/Bi2MoO6 had a large specific surface area of 56.0 m2/g,and the introduction of CQDs extended the light absorption spectrum from 480 nm to 496 nm.When utilizing the synthesized CQDs/Bi2MoO6 composite for photocatalytic degradation of antibiotic nor-floxacin in a water environment,complete decay of norfloxacin and effective removal of total organic car-bon(TOC)were achieved within 30 min.Through the optimization of material synthesis and experimen-tal conditions,the optimal CQDs loading amount was determined as 200 μL,the optimal CQDs/Bi2MoO6 dosage was 0.8 g/L.Moreover,the CQDs/Bi2MoO6 worked well under a wide pH range of 4.4-10.8.The co-existence of HCO3-enhanced the norfloxacin decay,while the presence of Cl-,NO3-,and SO42-slightly retarded it.The synthesized CQDs/Bi2MoO6 had the great potential in removing and mineralizing nor-floxacin in real aquatic environments.
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