离子液体对超声法制备硫化锌粒径及光催化性能的影响  

Effect of Ionic Liquids on Photocatalytic Performance and Particle Size of ZnS Nanoparticles Prepared by the Ultrasound Irradiating

作　　者：赵荣祥[1] 李秀萍[2] 徐铸德[3] 

机构地区：[1]辽宁石油化工大学石油化工学院,辽宁抚顺113001 [2]辽宁石油化工大学化学与材料科学学院,辽宁抚顺113001 [3]浙江大学化学系物理化学研究所,杭州310027

出　　处：《硅酸盐学报》2012年第4期518-522,共5页Journal of The Chinese Ceramic Society

基　　金：国家自然科学基金(20171039)资助项目

摘　　要：以醋酸锌和硫代乙酰胺为原料,分别以水、离子液以及两者的混合液为溶剂,用超声法成功合成了不同粒径的ZnS纳米粒子。用X射线衍射、扫描电子显微镜、红外光谱以及紫外–可见吸收光谱等对所制备样品的晶型、形貌和光学特性进行表征;以紫外光为光源、甲基橙为目标降解物质评价了ZnS纳米粒子的光催化活性。结果表明:离子液体的引入使ZnS纳米粒子的粒径明显变小,带隙能量变大,离子液介质中合成的ZnS纳米粒子具有更高的光催化活性。The nano-particles of ZnS with different sizes were synthesized via a ultrasonic method with zinc acetate dihydrate（Zn（CH3COO）2？2H2O） and thioacetamide（CH3C = SNH2） as starting materials and water,ionic liquids（IL） and aqueous solution of ionic liquids as a solvent.The phase,morphologies and optical properties of the products were investigated by X-ray diffraction,scanning electron microscopy,infrared spectroscopy and UV–Vis technique,respectively.The UV light was used as a light source to investigate the photocatalytic activity of the nano-particles of ZnS for the degradation of methyl orange.The results show that the nano-particles of ZnS become smaller,resulting in the greater band gaps,due to the addition of ionic liquids.The photocatalytic tests indicate that the as-prepared nano-particles in ionic liquids have a high photocatalytic degradation rate for methyl orange under UV light.

关 键 词：离子液 硫化锌 光催化 超声 甲基橙 三乙烯四胺 能带间隙 

分 类 号：O614.1[理学—无机化学]