溶剂热法一步合成Ag/TiO_2核壳纳米材料及其光催化性能研究  

Preparation and photocatalytic properties of Ag/TiO_2 core-shell nanomaterial via one-step solvothermal method

作　　者：王朋[1] 杨穆[1] 彭超豪 

机构地区：[1]北京科技大学材料科学与工程学院,北京100083

出　　处：《功能材料》2014年第12期12047-12050,共4页Journal of Functional Materials

基　　金：中央高校基本科研业务费资助项目(FRF-SD-12-004B;FRF-MP-09-009B);国家自然科学基金资助项目(50934007)

摘　　要：以钛酸四丁酯(TBT)和AgNO3为原料,采用溶剂热法一步合成了Ag/TiO2核壳结构纳米纤维和纳米颗粒,并利用SEM、TEM、XRD等详细表征了样品的结构和组成。AgNO3添加量、水热反应温度、分散剂聚丙烯酸(PAA)等对产物的形貌、结构和晶型有较大影响,并进一步研究了形貌、结构和组成对光催化性能的影响,分析了造成影响的机制。Ag/TiO2 core-shell nanofibers and nanoparticles were synthesized via one-step solvothermal method using tetrabutyltitanate（TBT）and AgNO3 as precursors.The structure and composition of these samples were characterized by SEM,TEM and XRD.The content of AgNO3,reaction temperature and dispersant agent polyacrylic acid（PAA）had an important influence on the morphology,structure and crystalline of the Ag/TiO2 composite materials.The effect of these factors on the photocatalytic activities was investigated and the reaction mechanism was proposed.

关 键 词：AG/TIO2 核壳纳米纤维 核壳纳米颗粒 溶剂热法 光催化 

分 类 号：TB33[一般工业技术—材料科学与工程]