Facile synthesis of Ag/La2O2CO3 hierarchical micro/nanostructures for antibacterial activity and phosphate removal  

作　　者：Xindang Bo Lijuan Wang Yanbao Zhao 

机构地区：[1]Engineering Research Center for Nanomaterials,Henan University,Kaifeng 475004,China [2]Department of Chemical Engineering,Henan Vocational College of Applied Technology,Zhengzhou 450042,China

出　　处：《Journal of Rare Earths》2020年第12期1372-1378,共7页稀土学报（英文版）

基　　金：Project supported by the National Natural Science Foundation of China(21271062)。

摘　　要：In this study,hierarchical Ag/La2 O2 CO3 micro/nanostructures(MNSs)were synthesized by in situ loading Ag nanoparticles(NPs)on the surface of the La2 O2 CO3 MNSs.The prepared La2 O2 CO3 MNSs present flower-like shape and can be tuned by the molar ratio of La(NO3)3 and CO(NH2)2.In the molar ratio of 1:2 to 1:55,the La2 O2 CO3 MNSs mainly consist of polyhedral rods,irregular rods and irregular spindles and their size is about 10,8 and 7μm,respectively.After loading Ag NPs,the spindle-like Ag/La2 O2 CO3 MNSs were used for phosphate removal and antibacterial activity.At the initial phosphate concentration of20 mg/L,the removal rate is 59.6%.The Ag/La2 O2 CO3 MNSs have significant antibacterial activity and their MIC values for S.aureus and E.coli are 31.3 and 15.6μg/mL,respectively.The results indicate that Ag/La2 O2 CO3 MNSs may have good application prospects in open water to inhibit bacterial growth.

关 键 词：Ag/La2O2CO3 Micro/nanostructures Antibacterial activity Phosphate removal activity Rare earths 

分 类 号：TB383.1[一般工业技术—材料科学与工程]