ZnO-Sm纳米复合物制备及可见光催化降解RhB

采用简单的水热反应后于400 ℃煅烧3 h,制备出正六边形柱状ZnO-Sm纳米颗粒.合成的ZnO材料用紫外-可见光谱仪（UV-vis）、扫描电子显微镜（SEM）、能谱分析仪（EDX）和傅氏转换红外线光谱分析仪(FTIR)表征.SEM扫描图片显示合成的ZnO材料为柱状正六边形纳米颗粒，且随着Sm的掺杂ZnO纳米颗粒的晶体体积变小，但并未改变ZnO晶体形态.EDX图谱证明Sm成功掺杂进入ZnO晶体.光催化实验显示在可见光照射下原子分数2.0 %ZnO-Sm纳米材料比纯ZnO纳米材料对玫瑰红B（RhB）的降解效果提高了近30%，并探索了最佳实验条件以获得更好的光催化效果.结果表明ZnO-Sm纳米材料在废水处理中具有潜在的应用价值.
Samarium-doped ZnO Nanoparticles were synthesized via a facile and surfactant-free solvothernal method after calcined 3 h at 400 ℃. The prepared nanostructures were characterized by UV-vis spectrophotometer, scanning electron microscopy (SEM), energy dispersive spectrum analysis (EDX) and Fourier transform infrared spectroscopy(FTIR).The SEM images show that the synthesized ZnO nanoparticles are regular hexagonal columnar body. And the morphology of the nanostructures is not changed after doped Sm，while the crystal volume of ZnO-Sm nanoparticles become smaller. The EDX spectrum depict that Sm ions are successfully doped into ZnO. The photocatalytic studies show that the ZnO-Sm(2.0%) photocatalytic degradation of RhB enhanced approximately 30% under visible light irradiation compared with the pure ZnO. And in order to obtain the best photocatalytic effect, the optimal experimental conditions were explored. As such, ZnO-Sm nanostructures were indicated great potential for practical applications in wastewater treatment.