Ag/InP复合材料的制备、表征及其性能  

Synthesis,Characterization and Properties of Ag/InP Composites

作　　者：刘淑玲[1,2] 韩晓莉[1,2] 仝建波 

机构地区：[1]陕西科技大学教育部轻化工助剂化学与技术重点实验室,西安710021 [2]陕西科技大学化学与化工学院,西安710021

出　　处：《材料工程》2017年第10期18-22,共5页Journal of Materials Engineering

基　　金：国家自然科学基金(21301113);陕西省自然科学基金(2015JM2059)

摘　　要：通过溶剂热法制得磷化铟微晶,然后以光化学还原法成功将Ag单质均匀地复合到磷化铟微晶表面,制备Ag/InP复合材料。采用X射线衍射仪和扫描电子显微镜等对所得产物进行分析,结果表明:复合材料由尺寸为500nm左右的球状微晶组成,其中20nm左右的Ag纳米颗粒均匀附着在立方相InP微球表面上,表面较为粗糙。以刚果红为目标降解物,利用荧光和紫外光谱对所得产物进行光催化性能测试,结果发现,与单体InP微晶相比,Ag/InP复合材料形成后,其对刚果红的光催化降解活性提高,这可能是由于Ag纳米颗粒均匀附着后,有效分离InP的光生电子和空穴。此外,对不同银负载量的Ag/InP的光催化性能进行研究。研究表明:当负载量为73.3%时,所得产物的光催化性能最佳,降解率可达64%。InP microcrystal was successfully synthesized viaa facile hydrothermal route,and then Ag nanoparticles were loaded on the surface of InP microcrystal using UV lamp to reduce silver versions.The as-prepared composites were characterized by X-ray diffraction（XRD）and field-emission scanning electron microscopy（FE-SEM）.The results show that Ag/InP composite is composed of lots of spherical microcrystals with a size of 500 nm and Ag nanoparticles with a diameter of 20 nm loaded uniformly on the surface of cubic phase InP microspheres,the surface is rough.Using Congo red as model organic pollutant,the photo-catalytic performance of Ag/InP microspheres is further detected by fluorescence and UV-vis spectra.It is found that the as-prepared composite exhibits a superior photo-catalytic degradation activity as compared to InP,which might be the effective separation of electrons and holes after Ag nanoparticles loaded on the surface of InP microspheres.In addition,the photo-catalytic performance of Ag/InP microspheres with different Ag loads was studied,and the results show that when the loading is 73.3%,the photocatalytic activity of the product is the best,and the degradation rate is 64%.

关 键 词：Ag/InP 荧光光谱 光催化性能 复合材料 

分 类 号：O614.8[理学—无机化学]