As the misuse and overuse of tetracycline(TC)contribute to water pollution,it is imperative to explore an efficient and cost-effective approach for the removal of TC in aqueous solution.Photocatalysis is a green and s...As the misuse and overuse of tetracycline(TC)contribute to water pollution,it is imperative to explore an efficient and cost-effective approach for the removal of TC in aqueous solution.Photocatalysis is a green and sustainable chemical technique because of its utilization of solar energy.From the view of practical application,it is significant to design a highly efficient,stable,eco-friendly and economical photocatalyst.In this work,CuBi_(2)O_(4)/g-C_(3)N_(4) p–n heterojunctions with different CuBi_(2)O_(4) content(10–90 wt%)were prepared via a facile calcining method.The CuBi_(2)O_(4)/g-C_(3)N_(4) heterojunctions exhibit superior photocatalytic activity in the degradation of TC,compared with pristine CuBi_(2)O_(4) and g-C_(3)N_(4).The optimum photoactivity of 70 wt%CuBi_(2)O_(4)/g-C_(3)N_(4) is up to 4 and 6 times higher than that of CuBi_(2)O_(4) and g-C_(3)N_(4),respectively.The enhanced photocatalytic activity can be attributed to p–n junction photocatalytic systems,which effectively promote charge carrier separation and transfer.It is anticipated that the design of CuBi_(2)O_(4)/g-C_(3)N_(4) could offer the insight needed to construct inexpensive and highly efficient g-C_(3)N_(4)-based heterojunction photocatalysts,to relieve urgent environmental deterioration.展开更多
基金supported by the Collaborative Innovation Center of Suzhou Nano Science and Technology,the National Natural Science Foundation of China(51422207,51572179,21471106,21501126)the Natural Science Foundation of Jiangsu Province(BK20161216)a project funded by the Priority Academic Program Development of Jiangsu Higher Education Institutions(PAPD).
文摘As the misuse and overuse of tetracycline(TC)contribute to water pollution,it is imperative to explore an efficient and cost-effective approach for the removal of TC in aqueous solution.Photocatalysis is a green and sustainable chemical technique because of its utilization of solar energy.From the view of practical application,it is significant to design a highly efficient,stable,eco-friendly and economical photocatalyst.In this work,CuBi_(2)O_(4)/g-C_(3)N_(4) p–n heterojunctions with different CuBi_(2)O_(4) content(10–90 wt%)were prepared via a facile calcining method.The CuBi_(2)O_(4)/g-C_(3)N_(4) heterojunctions exhibit superior photocatalytic activity in the degradation of TC,compared with pristine CuBi_(2)O_(4) and g-C_(3)N_(4).The optimum photoactivity of 70 wt%CuBi_(2)O_(4)/g-C_(3)N_(4) is up to 4 and 6 times higher than that of CuBi_(2)O_(4) and g-C_(3)N_(4),respectively.The enhanced photocatalytic activity can be attributed to p–n junction photocatalytic systems,which effectively promote charge carrier separation and transfer.It is anticipated that the design of CuBi_(2)O_(4)/g-C_(3)N_(4) could offer the insight needed to construct inexpensive and highly efficient g-C_(3)N_(4)-based heterojunction photocatalysts,to relieve urgent environmental deterioration.
