首页|Synthesis of carbon quantum dots decorating Bi2MoO6 microspherical heterostructure and its efficient photocatalytic degradation of antibiotic norfloxacin
Synthesis of carbon quantum dots decorating Bi2MoO6 microspherical heterostructure and its efficient photocatalytic degradation of antibiotic norfloxacin
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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.
Meijuan Chen、Liyun Zhao、Xianjin Shi、Wei Wang、Yu Huang、Lijuan Fu、Lijun Ma
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School of Human Settlements and Civil Engineering,Xi'an Jiaotong University,Xi'an,710049,China
Key Lab of Aerosol Chemistry and Physics,State Key Laboratory of Loess and Quaternary Geology(SKLLQG),Institute of Earth Environment,Chinese Academy of Sciences,Xi'an 710061,China
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