温和水热法合成具有纳米棒状次级结构的氧化铜微球及其光学性质

采用温和水热合成法,以CuCl2·H2O为反应原料,使用无毒且易溶于水的十二烷基苯磺酸钠SDBS为模板剂,在氨水体系中合成了具有纳米棒状次级结构的CuO微球,并研究了不同实验条件对CuO微球形貌的影响,发现SDBS和氨水的用量是影响棒状次级结构自组装成球的关键因素,而向体系中引入强碱则会改变棒状次级结构.通过XRD、SEM、TEM及HRTEM对合成产物的结构、晶型、形貌及颗粒大小进行研究.采用FT-IR研究了产物的表面结构.UV-Vis吸收光谱及荧光光谱(PL)结果表明产物在紫外-可见光区具有较强的光捕获能力,并能发出蓝紫光.

Mild hydrothermal synthesis of copper oxide microspheres with nanorod-like hierarchical structure and their optical properties

CuO microspheres with a hierarchical nanorod-like structure were synthesized by mild hydrothermal method in a water-ammonia system,where CuCl2·H2O was used as the raw material and non-toxic water soluble SDBS as a template.The dependence of CuO microsphere morphology on reaction conditions was investigated.It was found that the amount of SDBS and ammonia plays an important role on formation of spherical CuO by self-assemble of nanorod-like structures.While adding strong base to the reaction system would change the rod-like hierarchical structure.The crystalline structure,morphology and particle size of the synthesized product were characterized by XRD,SEM,TEM,and HRTEM.The surface structure of the product was studied by FT-IR.The UV-Vis absorption spectrum and photoluminescence spectrum(PL) of the CuO microspheres show that its light harvesting capability in UV-Vis region is large,and it can emit purple-blue light.