Ag含量对Ag/Sm(OH)_3形貌和光催化性能的影响

Influences of addition amount of Ag on morphology and photocatalytic activity of Ag/Sm(OH)_3

以硝酸钐(Sm(NO_3)_3·6H_2O)和硝酸银(AgNO_3)为原料,采用均匀沉淀法成功制备出了形貌可控的Ag/Sm(OH)_3复合材料.并利用X-射线衍射仪(XRD)、扫描电子显微镜(SEM)和场发射透射电子显微镜(TEM)对产物的物相、形貌进行表征,并研究了Ag含量对Ag/Sm(OH)_3复合材料光催化活性的影响.结果表明:当Ag的含量为2%、5%以及8%时,分别得到了表面粗糙的棒状、相互交联的纳米棒以及片状的Ag/Sm(OH)_3.当Ag的含量为5%时,Ag/Sm(OH)_3光催化性能最好,紫外光照射30min后对罗丹明B降解率达到99.7%.

Ag/Sm（OH）3composite materials with controllable morphologies were successfully prepared by aprecipitation method using Sm（NO3）3·6H2O and AgNO3 as raw materials.The influences of different addition amount of Ag on phase,morphology of Ag/Sm（OH）3 composite materials were investigated by X-Ray Diffraction（XRD）,Scanning Electron Microscope（SEM）and Transmission Electron Microscope（TEM）.Results show that Ag/Sm（OH）3 with various morphologies of the rough surface of the nanorod,mutual crosslinking of nanorods and sheet can be obtained with various addition amount of Ag of 2%,5%and 8%,respectively.And the Ag/Sm（OH）3with an addition amount of Ag of 5% displays the best photocatalytic to degrade Rhodamine B（RhB）,which photodegradation efficiency reaches 99.7% under UV irradiation for 30 min.