摘要
采用水热法,以氯化铌、四水合硝酸镉为原料,成功制备了Cd_2Nb_2O_7基光催化材料.通过改变Cd/Nb的物质量比为1∶2、1∶1、1.5∶1,分别制备了Cd_2Nb_2O_7/NaNbO_3、Cd_2Nb_2O_7、Cd_2Nb_2O_7/Cd(OH)_2光催化材料.采用X射线衍射、扫描电子显微镜、固体漫反射光谱等测试方法表征了材料的物相结构、形貌和光学性能.系统研究了Cd/Nb的物质量比对样品相组成、光学性能和光催化性能的影响.以罗丹明B为目标降解物,进一步研究了样品的光催化性能.实验结果表明,由于样品具有不同的形貌和光吸收性能,导致不同的光催化活性,光催化活性从大到小的顺序为Cd_2Nb_2O_7/Cd(OH)_2,Cd_2Nb_2O_7,Cd_2Nb_2O_7/NaNbO_3.
Cd2Nb2O7 based photocatalysts were synthesized successfully via a hydrothermal method,using NbCl5 and Cd(NO3)2·4H2O as raw materials.Through changing the mole ratio of Cd/Nb(1∶2,1∶1,1.5∶1),Cd2Nb2O7/NaNbO3,Cd2Nb2O7 and Cd2Nb2O7/Cd(OH)2 were synthesized,respectively.The phase compositions,morphologies and optical properties were characterized by XRD,SEM and DRS.The influence of mole ratio of Cd/Nb on the phase composition,optical and photocatalytic properties of as-synthesized samples was investigated in detail.The photocatalytic activities of samples were further studied using Rhodamine B(RhB)as a model contaminant.The experimental results show that samples exhibits different photoactivities,due to different morphologies and light absorption properties.The photoactivities of samples decrease in the order of Cd2Nb2O7/Cd(OH)2,Cd2Nb2O7,Cd2Nb2O7/NaNbO 3.
作者
邓立成
夏继华
张大凤
蒲锡鹏
DENG Li-cheng;XIA Ji-hua;ZHANG Da-feng;PU Xi-peng(School of Materials Science and Engineering,Liaocheng University,Liaocheng 252059,China)
出处
《聊城大学学报（自然科学版）》
2017年第4期33-36,47,共5页
Journal of Liaocheng University:Natural Science Edition
基金
国家自然科学基金项目(5130076)
聊城大学大学生科技文化创新基金(26312171911)资助
作者简介
通讯作者：邓立成,E-mail：1164293140@qq.com.
