Zn掺杂SnS_2/SnO_2复合材料的制备及其光催化性能  

Photocatalytic property of Zn-doped SnS_2/SnO_2 nanoparticles prepared by a simple one-step microwave hydrothermal method

作　　者：殷立雄[1] 房佳萌 柴思敏 李慧敏 白艺洋 YIN Li xiong;FANG Jia meng;CHAI Si min;LI Hui min;BAI Yi yang(School of Materials Science and Engineering, Shaanxi University of Science & Technology, Xi'An 710021, China)

机构地区：[1]陕西科技大学材料科学与工程学院,陕西西安710021

出　　处：《陕西科技大学学报》2017年第6期62-65,71,共5页Journal of Shaanxi University of Science & Technology

基　　金：国家自然科学基金项目(51541204);陕西省科技厅工业科技攻关计划项目(2016GY-199);国家级大学生创新创业训练计划项目(201610708008)

摘　　要：以五水合氯化锡(SnCl_4·5H_2O)和九水合硫化钠(Na_2S·9H_2O)为原料,葡萄糖酸锌(Zn(C_6H_(11)O_7)_2)为添加剂,采用一步微波水热法制备Zn掺杂SnS_2/SnO_2复合相纳米颗粒.采用XRD、TEM、光电流性能测试、拉曼强度对比等测试手段对所合成的不同Zn掺杂量的材料结构和形貌以及性能进行表征,并以染料甲基橙(MO)为目标降解物,研究了所制备的光催化剂在紫外光下降解有机污染物的性能.结果表明,Zn掺杂之后复合材料的颗粒尺寸明显减小.Zn∶Sn=1∶17掺杂材料的拉曼光谱吸收峰的位置变化不大,较为稳定,并且该材料表面的载流子移动速率最稳定.光催化降解甲基橙结果表明:Zn掺杂量为1∶17时样品在20 min之内,紫外光降解甲基橙效率可高达98%,表现出良好的光催化性能.Zn doped SnS2/SnO2nanoparticles were prepared by a simple one step microwave hydrothermal method at a little Zn doping amounts,using SnCl4路5H2O and Na2S路9H2O as raw materials and Zn(C6H11O7)2as the additive agent.Structural,morphological of different doping amounts samples were characterized by using X ray銆乪lectron microscopy(TEM),Photocurrent responses,Roman spectra.The result confirms that the phase of SnS2and SnO2are successfully combined,and the size of the samples was decreased after dopped,obviously.The1鈭?7sample possesses higher efficiency of charge separation and transfer.The range of variation Roman spectra is low when the molar ratio(Zn鈭禨n)reached to1鈭?7.Furthermore,the photocatalytic properties of the nanocomposites were tested for the degradation of methyl orange(MO)in water under ultraviolet light,greater than98%photodegradation of MO was achieved within20min with the composites prepared while the molar ratio(Zn鈭禨n)reached to1鈭?7,which displayed remarkably promoted photocatalytic activities.The Zn doping amounts to composite nanoparticles was considered to play an significant role in attaining the high photocatalytic performances.

关 键 词：掺杂 光催化 SnS2/SnO2 电子灢空穴分离 颗粒尺寸 

分 类 号：TB334[一般工业技术—材料科学与工程]