溶剂热法合成CuS晶体及其光学性能研究  

Solvothermal Synthesis of CuS Crystal and Study on its Optical Properties

作　　者：史磊[1,2] 顾曼琦[1,2] 陈雪羽[1,2] 朱莉萍[3] 杨锦瑜[1,2] 

机构地区：[1]贵州师范大学化学与材料科学学院,贵州贵阳550001 [2]贵州省功能材料化学重点实验室,贵州贵阳550001 [3]贵州师范大学职业技术学院,贵州贵阳550001

出　　处：《稀有金属与硬质合金》2016年第1期68-73,共6页Rare Metals and Cemented Carbides

基　　金：国家自然科学基金项目(213610007);贵州自然科学基金项目(黔科合J字[2012]2269号);贵州省高层次人才科研特助经费项目(TZJY-2011-40);贵州省国际科技合作计划项目(黔科合外G字[2013]7015号)

摘　　要：以CuCl2为铜源,(NH2)2CS为硫源,C2H6O2-NH3·H2O混合溶液为溶剂,采用溶剂热法合成CuS晶体材料,通过X射线衍射谱(XRD)、荧光光谱、紫外可见漫反射光谱(UV-Vis)和傅里叶变换红外光谱(FT-IR)对合成产物的晶体结构和光学性能进行研究,并对部分合成工艺条件对合成产物的光吸收性能的影响进行分析。研究结果表明,溶剂热法所制备样品为纯六角相靛铜矿CuS晶体。荧光光谱显示CuS晶体在470.8、498.4、577.6nm处存在三个较强的蓝光及绿光PL发射峰。紫外可见漫反射光谱显示,合成工艺条件显著影响着所制备样品的光吸收性能,在反应体系中反应物浓度为0.30mol/L,铜与硫的摩尔比为3∶2,溶剂中乙二醇与氨水体积比为4∶1的条件下于140℃下保温2h,即可获得近红外区光吸收性能较优的产物。CuS crystal was synthesized via solvothermal route employing CuCl2 as copper source,（NH2）2CS as sulfur source and C2H6O2-NH3·H2O mixed solution as solvent.The crystal structure and optical properties of the as-synthesized samples were investigated by XRD,FL,FT-IR and UV-Vis.The influences were also discussed of some synthesis conditions on the optical properties of the as-prepared samples.The results show that the prepared sample by solvothermal synthesis is CuS crystal of pure hexagonal covellite structure.There are three strong PL emission peaks of blue and green light at 470.8nm,498.4nm and577.6nm in the photoluminescence spectrum of CuS crystal.The ultraviolet-visible spectra exhibit that synthesis conditions have significant influences on the optical properties of the samples.When reactant concentration in the reaction system is 0.30 mol/L,copper to sulfur molar ratio is 3∶2,glycol to ammonia volume ratio is 4∶1,and the solvothermal reaction temperature and time are 140 ℃ and 2h,the as-prepared sample displays excellent near-infrared absorption performance.

关 键 词：CUS 合成 溶剂热法 晶体结构 光学性能 

分 类 号：TQ131.21[化学工程—无机化工]