Ni掺杂黄铁矿型FeS_2的溶剂热合成及其可见光催化活性  

Ni-Doped FeS_2: Solvothermal Synthesis and the Visible-Light Photocatalytic Properties

作　　者：龙飞[1,2] 张劲[2] 张明月[2] 何金云[1,2] 武晓鹂 邹正光[1,2] 

机构地区：[1]有色金属及材料加工新技术教育部重点实验室,桂林541004 [2]桂林理工大学材料科学与工程学院,桂林541004

出　　处：《无机化学学报》2015年第6期1119-1124,共6页Chinese Journal of Inorganic Chemistry

基　　金：国家自然科学基金(No.51162005);广西自然科学基金(No.2012GXNSFFA060007)资助项目

摘　　要：以Fe SO4·7H2O、Na2S2O3·5H2O和Ni SO4·6H2O为原料,采用溶剂热法合成了Ni掺杂的黄铁矿Fe S2粉体,利用XRD、XPS、FE-SEM、UV-Vis、拉曼光谱等测试手段对所得产物进行了表征分析。结果表明,掺杂适量的Ni可促进白铁矿Fe S2向黄铁矿Fe S2的晶型转变。Ni掺杂有利于提高NixFe1-xS2的可见光催化活性,当Ni的掺入量x为0.125时,样品的光催化性能最好。在可见光照射210 min后,亚甲基蓝的降解率为62.8%,与未掺杂Fe S2相比,其降解率提高了26.2%。Ni-doped pyrite Fe S2 were synthesized through a solvothermal method using Fe SO4·7H2O, Na2S2O3·5H2O and Ni SO4·6H2O as raw materials. The products were characterized by X-ray diffraction（XRD）, X-ray Photoelectron Spectroscopy（XPS）, field emission scanning electron microscope（FE-SEM）, UV-Vis diffuse reflectance spectra（DRS） and Raman spectroscopy. The results showed that appropriate amount of Ni doping facilitated the transformation of the marcasite to pyrite. After Ni2 ＋doping, the visible-light-driven photocatalytic performance of the Fe S2 was greatly enhanced. Methylene blue（MB） was decomposed 62.8% within 210 min using Ni0.125Fe0.875S2 as photocatalyst, which was 26.2% higher than that of the pristine Fe S2.

关 键 词：溶剂热合成 FeS2 Ni掺杂 光催化活性 亚甲基蓝 

分 类 号：O614.813[理学—无机化学]