高效防蓝光载银纳米氧化铈基复合材料的研制
Development of Silver-loaded Cerium Oxide Nanocomposites with High Efficiency Against Blue Light
胡力 1李浩洋 2江宇 2钟清霞2
作者信息
- 1. 广东药科大学 医药化工学院,广东 中山 528405;广东碧茜生物科技有限公司,广东 中山 528400
- 2. 广东药科大学 医药化工学院,广东 中山 528405
- 折叠
摘要
为解决现有物理、化学防晒材料无法屏蔽短波蓝光的缺陷,发挥氧化铈的应用价值,以聚乙烯亚胺为模板改性剂,通过简单化学沉淀制备掺杂银的防蓝光复合材料Ag NPs@CeO2-PEI.利用紫外可见分光光度计(UV-Vis)、扫描电镜-能谱(SEM、EDS)、傅里叶红外光谱仪(FT-IR)、X 射线衍射(XRD)以及抗菌实验等,进行表征与性能考察.当聚乙烯亚胺质量分数为2.5%,L-抗坏血酸与改性氧化铈(CeO2-PEI)占比质量分数为 2.348%时,产物防短波长蓝光效果最好,且质量浓度于 0.2 mg·mL-1 时短波蓝光区平均吸光度高达1.57.当载银质量分数为1.2%的Ag NPs@CeO2-PEI悬浊液对革兰氏阳性菌杀菌率高达 82.05%,可见光协同作用下杀菌率为 100%.研究结果表明:成功研制了基于聚乙烯亚胺的载银纳米氧化铈复合材料,其具有高效的防蓝光及良好的抗菌特性.
Abstract
In order to solve the defects of existing physical and chemical sunscreen materials that cannot shield short-wave blue light and to bring the application value of cerium oxide into play,silver-doped anti-blue-light composites Ag NPs@CeO2-PEI were prepared by simple chemical precipitation using polyethyleneimine as a template modifier.Characterization and performance investigations were carried out using ultraviolet-visible spectrophotometry(UV-Vis),scanning electron microscopy-energy spectroscopy(SEM,EDS),Fourier infrared spectroscopy(FT-IR),X-ray diffraction(XRD)and antimicrobial tests.When the concentration of polyethyleneimine was 2.5%and the ratio of L-ascorbic acid to modified cerium oxide(CeO2-PEI)was 2.348%,the product showed the best resistance to short-wavelength blue light,with an average absorbance in the short-wavelength blue region as high as 1.57 at 0.2 mg·mL-1.And the bactericidal rate of Ag NPs@CeO2-PEI suspension containing 1.2%silver against Gram-positive bacteria was as high as 82.05%,and the bactericidal rate under the synergistic action of visible light was 100%.The results showed that silver-loaded cerium oxide nanocomposites based on polyethyleneimine were successfully developed,which had efficient anti-blue light and good antibacterial properties.
关键词
氧化铈/防蓝光/复合材料/抗菌性Key words
Cerium oxide/Anti-blue light/Composite material/Antimicrobial引用本文复制引用
基金项目
2022年全国大学生创新创业项目资助(S202210573043)
出版年
2024
NETL
NSTL
万方数据