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标题：High performance of pyrochlore like Sm 2Ti 2O 7 heterojunction photocatalyst for efficient degradation of rhodamine-B dye with waste water under visible light irradiation
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作者：K. Kaviyarasu ; C. Maria Magdalane ; D. Jayakumar 等
期刊名称：Journal of King Saud University - Science
印刷版ISSN：1018-3647
出版年度：2020
卷号：32
期号：2
页码：1516-1522
DOI：10.1016/j.jksus.2019.12.006
语种：English
出版社：Elsevier
摘要：AbstractBinary metal oxide heterojunctions possibly will exclude the recombination of photogenerated charge carriers via interfacial charge transfer in assessment among the single-component photocatalytic material. Highly ordered samarium doped titania nanosphere have paid more attention to the exclusion of toxic organic pollutants. Tuning the shape, size, morphology, bandgap and defect optimization of titanium oxides (Sm2Ti2O7) improved as an enhanced catalyst which was synthesized by using the capping agent also acts as a reducing agent. Herein, we examine an environmentally pleasant Sm2Ti2O7nanosphere with its various properties via assorted characterization techniques and wrapping of nanosphere makes them appropriate catalysts for the degradation of toxic dyes and show the highest efficiency via irradiation of visible light by declining the option of the exciton-recombination process. Therefore, the photocatalyst was found to produce reactive oxygen species (ROS) both in the presence and absence of light, which is responsible for the decomposition of dyes into small fractions. In addition, HRTEM study reveals that the nanospheres are highly porous nature with high active surface area and small grain size are reported in detail.
关键词：Sm;2;Ti;2;O;7;nanosphere;Optical properties;Electron spectroscopy;Rhodamine-B dye;Photocatalytic activity