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

• 作者: Lijuan Wang Xindang Bo Yanbao Zhao
• 来源期刊: 稀土学报（英文版）
• 年，卷（期）: 2020,（12）
• 所属期刊栏目: RARE EARTH APPLICATIONS
• 页码范围: 1372-1378
• 页数: 7页
• 语种: 英文

摘要

In this study, hierarchical Ag/La2O2CO3 micro/nanostructures (MNSs) were synthesized by in situ loading Ag nanoparticles (NPs) on the surface of the La2O2CO3 MNSs. The prepared La2O2CO3 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 La2O2CO3 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/La2O2CO3 MNSs were used for phosphate removal and antibacterial activity. At the initial phosphate concentration of 20 mg/L, the removal rate is 59.6％. The Ag/La2O2CO3 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/La2O2CO3 MNSs may have good application prospects in open water to inhibit bacterial growth.