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NaYF4:Yb,Tm@TiO2 core@shell structures for optimal photocatalytic degradation of ciprofloxacin in the aquatic environment

机译:NayF4:YB,TM @ TiO2核心@壳结构,用于最佳光催化降解水生环境中的环丙沙星

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The removal of antibiotic residues in the aquatic environment is still a big challenge in environmental protection. Here, we developed NaYF4:Yb,Tm@TiO2 as a highly efficient photocatalyst for photocatalytic degradation of ciprofloxacin (CIP), a representative antibiotic in water under simulated solar irradiation. NaYF4:Yb,Tm@TiO2 can efficiently utilize a broad spectrum of solar energy to improve the efficiency of ciprofloxacin removal from an aquatic environment. The optimum operation conditions of photocatalyst dosage, pH value, and initial concentrations of CIP were determined by a series of contrast experiments. The dynamic process of CIP removal was monitored by UV-vis spectrophotometry, and can be well predicted by a pseudo first order model. The optimal conditions of photocatalyst dosage, initial concentration of CIP and pH value for CIP photocatalytic degradation were 1 g L-1, 10(-5) M and 8, respectively. This study provides an efficient method for antibiotic removal and enables a promising strategy for other organic water pollutant treatments.
机译:去除水生环境中的抗生素残留仍然是环境保护的巨大挑战。在这里,我们开发了NayF4:Yb,TM @ TiO2作为一种高效的光催化剂,用于光催化降解环丙沙星(CIP),在模拟太阳辐照下的水中的代表性抗生素。 Nayf4:Yb,TM @ TiO2可以有效地利用广泛的太阳能,以提高来自水生环境的环丙沙星的效率。通过一系列对比度实验确定光催化剂剂量,pH值和CIP初始浓度的最佳操作条件。通过UV-VIS分光光度法监测CIP去除的动态过程,并且可以通过伪第一阶模型进行良好预测。光催化剂剂量的最佳条件,CIP光催化降解的CIP初始浓度和pH值分别为1g L-1,10(-5)m和8。本研究提供了一种有效的抗生素去除方法,并使其他有机水污染物处理能够进行有希望的策略。

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    《RSC Advances》 |2019年第57期|共6页
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  • 正文语种 eng
  • 中图分类 化学;
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