• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>RSC Advances >Novel triangular silver nanoparticle modified membranes for enhanced antifouling performance
【24h】

Novel triangular silver nanoparticle modified membranes for enhanced antifouling performance

机译：新型三角银纳米粒子改性膜，用于增强防污性能

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

This study marks the first ever attempt at the successful fabrication of a novel reactive membrane to combat fouling through layer-by-layer (LBL) surface modification with polyelectrolyte (PE), followed by anisotropic triangular silver nanoparticles (TSNP). The morphology and the presence of TSNP on the membrane was confirmed by HR-TEM, FE-SEM and XPS. The charge density of the novel membrane (PE-TSNP) was increased 15.6 fold, as a result of the sharp-tip morphology of the TSNP forming tip-based hot spots on the membrane surface and high-atom-density active facets, which also enhanced the membrane hydrophilicity by 36%. Owing to these improved features, the novel membrane displayed remarkable antibacterial and anti-adhesion properties by achieving 100% bactericidal effect against high initial bacterial concentration (10(7) CFU mL(-1)). The membrane flux was improved by 31% while retaining a high flux recovery rate of 98.2% against biofouling. The membrane also mitigated organic and bio-organic fouling by maintaining high flux recovery rates of 96% and 95% respectively. As compared with a spherical silver nanoparticle modified membrane (PE-SSNP), the PE-TSNP membrane was 25.7% more hydrophilic and achieved 10% higher bacterial killing. Moreover, the novel membrane displayed 9.5%, 11.6%, and 14% higher flux recovery rates than that of the PE-SSNP membrane against biofouling, organic and bio-organic fouling respectively. Furthermore, the novel membrane retained a long-term biocidal capability of 93% even after 4 months of successive tests. ICP-MS revealed silver ion leaching of 4 g L-1 and the total silver loss of 14% from the PE-TSNP membrane after 14 days.
机译：该研究标志着首次尝试成功制造一种新型反应膜，以通过用聚电解质（PE）的逐层（LBL）表面改性结垢，然后是各向异性三角形银纳米颗粒（TSNP）。通过HR-TEM，Fe-SEM和XPS证实了膜上的形态和Tsnp的存在。该新型膜（PE-TSNP）的电荷密度增加了15.6倍，结果是膜表面上的TSNP的尖端热点的尖锐尖端形态，也是如此通过36％提高膜亲水性。由于这些改进的特征，新型膜通过针对高初始细菌浓度（10（7）CFU ML（-1））实现了100％的杀菌效果而显示出显着的抗菌和抗粘附性能。膜通量提高了31％，同时保留高通量回收率为98.2％，抵抗生物污染。通过将高通量回收率分别为96％和95％，膜也减轻了有机和生物有机污染。与球形银纳米颗粒改性膜（PE-SSNP）相比，PE-TSNP膜更亲水的25.7％，并达到10％的细菌杀伤。此外，新型膜分别显示出比PE-SSNP膜的9.5％，11.6％和14％的助熔剂恢复率分别对生物污染，有机和生物有机污垢的影响。此外，即使在连续测试4个月后，新型膜也保留了93％的长期生物灭菌能力。 ICP-MS显示银离子浸出4g 1-1，14天后从PE-TSNP膜的总银损失为14％。

著录项

  • 来源
    《RSC Advances》 |2019年第12期|共12页
  • 作者

    Ahmad Jabran; Wen Xianghua; Li Fengjuan; Wang Bo;

  • 作者单位

    Tsinghua Univ State Key Joint Lab ESPC Sch Environm Beijing 100084 Peoples R China;

    Tsinghua Univ State Key Joint Lab ESPC Sch Environm Beijing 100084 Peoples R China;

    Tsinghua Univ State Key Joint Lab ESPC Sch Environm Beijing 100084 Peoples R China;

    Tsinghua Univ State Key Joint Lab ESPC Sch Environm Beijing 100084 Peoples R China;

  • 收录信息
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 化学;
  • 关键词

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号