Our official English website, www.x-mol.net, welcomes your
feedback! (Note: you will need to create a separate account there.)
Synthesis, characterization, and comparison of antibacterial effects and elucidating the mechanism of ZnO, CuO and CuZnO nanoparticles supported on mesoporous silica SBA-3
RSC Advances ( IF 3.9 ) Pub Date : 2020-1-15 , DOI: 10.1039/c9ra09829a Songfa Qiu 1 , Hongjun Zhou 1 , Zhichuan Shen 1 , Li Hao 1 , Huayao Chen 1 , Xinhua Zhou 1
RSC Advances ( IF 3.9 ) Pub Date : 2020-1-15 , DOI: 10.1039/c9ra09829a Songfa Qiu 1 , Hongjun Zhou 1 , Zhichuan Shen 1 , Li Hao 1 , Huayao Chen 1 , Xinhua Zhou 1
Affiliation
|
Silanized iminodiacetic acid (GLYMO–IDA) modified mesoporous silica (G-SBA) was prepared following a co-condensation method. G-SBA/Cu2+, G–SBA/Zn2+ and G-SBA/Cu2+–Zn2+ were obtained through the impregnation method with coordination by GLYMO–IDA. SBA/CuO, SBA/ZnO, and SBA/CuZnO were generated after calcination of G-SBA/Cu2+, G-SBA/Zn2+ and G-SBA/Cu2+–Zn2+. After modification, the amount of metal ion was 6 to 70 times higher than that of the blank mesoporous silica. The diameter of nano-copper oxide particles in mesoporous silica was 4.8 nm. The bacteriostatic rates of SBA/CuO at a copper oxide concentration of 250 ppm against E. coli and S. aureus were 85.87% and 100%, respectively. SBA/CuO and SBA/CuZnO with {111} lattice planes exhibited better antibacterial effects compared to the commercial-grade nano-zinc oxide and nano-copper oxide. When exposed to ultraviolet light, SBA/CuZnO displayed the highest photocatalytic activity and optimal antimicrobial effect. Therefore, SBA/CuZnO can be an alternative to antibiotics because of its non-toxic nature and good antibacterial properties.
中文翻译：
介孔二氧化硅 SBA-3 负载 ZnO、CuO 和 CuZnO 纳米粒子的合成、表征和抗菌效果比较及机理
硅烷化亚氨基二乙酸（GLYMO-IDA）改性介孔二氧化硅（G-SBA）采用共缩合法制备。G-SBA/Cu 2+、G-SBA/Zn 2+和G-SBA/Cu 2+ -Zn 2+通过GLYMO-IDA配位的浸渍法得到。SBA/CuO、SBA/ZnO和SBA/CuZnO在G-SBA/Cu 2+、G-SBA/Zn 2+和G-SBA/Cu 2+ -Zn 2+煅烧后生成。改性后金属离子含量比空白介孔二氧化硅高6～70倍。介孔二氧化硅中纳米氧化铜颗粒的直径为4.8 nm。氧化铜浓度为 250 ppm 时 SBA/CuO 的抑菌率大肠杆菌和金黄色葡萄球菌分别为 85.87% 和 100%。与商业级纳米氧化锌和纳米氧化铜相比，具有{111}晶面的SBA/CuO和SBA/CuZnO表现出更好的抗菌效果。当暴露于紫外线时，SBA/CuZnO表现出最高的光催化活性和最佳的抗菌效果。因此，SBA/CuZnO因其无毒和良好的抗菌性能可以替代抗生素。
更新日期：2020-01-15
中文翻译：
介孔二氧化硅 SBA-3 负载 ZnO、CuO 和 CuZnO 纳米粒子的合成、表征和抗菌效果比较及机理
硅烷化亚氨基二乙酸（GLYMO-IDA）改性介孔二氧化硅（G-SBA）采用共缩合法制备。G-SBA/Cu 2+、G-SBA/Zn 2+和G-SBA/Cu 2+ -Zn 2+通过GLYMO-IDA配位的浸渍法得到。SBA/CuO、SBA/ZnO和SBA/CuZnO在G-SBA/Cu 2+、G-SBA/Zn 2+和G-SBA/Cu 2+ -Zn 2+煅烧后生成。改性后金属离子含量比空白介孔二氧化硅高6～70倍。介孔二氧化硅中纳米氧化铜颗粒的直径为4.8 nm。氧化铜浓度为 250 ppm 时 SBA/CuO 的抑菌率大肠杆菌和金黄色葡萄球菌分别为 85.87% 和 100%。与商业级纳米氧化锌和纳米氧化铜相比，具有{111}晶面的SBA/CuO和SBA/CuZnO表现出更好的抗菌效果。当暴露于紫外线时，SBA/CuZnO表现出最高的光催化活性和最佳的抗菌效果。因此，SBA/CuZnO因其无毒和良好的抗菌性能可以替代抗生素。
京公网安备 11010802027423号