Urchin-like m-LaVO4 and m-LaVO4/Ag microspheres:synthesis and characterization

The semiconductor nanostructures decorated with noble metals have attracted increasing attention due to their interesting physical and chemical properties.In this work, urchin-like monoclinic (m-) LaVO4 microspheres were prepared by a hydrothermal method and used as a template to fabricate Ag nanoparticle-decorated m-LaVO4 composites.The morphology and structure were characterized by transmission electron microscope, high-resolution transmission electron microscope, scanning electron microscope, and energy-dispersive X-ray.It was found that Ag nanoparticles with narrow size distribution were uniformly loaded on urchin-like m-LaVO4microspheres, and the resulted composite microspheres showed distinct surface plasmon absorption band compared to pure m-LaVO4 microspheres.Photocatalytic activities of as-prepared samples were examined by studying the degradation of methyl orange solutions under visible-light irradiation (>400 nm).Results clearly showed that urchin-like m-LaVO4/Ag microspheres possess much higher photocatalytic activity than pure m-LaVO4 microspheres and P25.
LaVO4 Hydrothermal synthesis Microsphere Photocatalytic activity Methyl orange
Limiao Chen Min Wu Dan Wang Le Zhou Na Yu Peisen Zhang Jianhan Huang Xiaohe Liu Guanzhou Qiu
School of Minerals Processing and Bioengineering, Central South University, Changsha 410083,China;Co College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, PR China School of Minerals Processing and Bioengineering, Central South University, Changsha 410083,China
国内会议
宁波
英文
334-349
2014-11-11(万方平台首次上网日期,不代表论文的发表时间)