Graphene oxide membranes on a hierarchical elemental carbon-based support,Environmental Science: Nano

当前位置： X-MOL 学术 › Environ. Sci.: Nano › 论文详情

Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)

Graphene oxide membranes on a hierarchical elemental carbon-based support
Environmental Science: Nano ( IF 5.8 ) Pub Date : 2020/01/03 , DOI: 10.1039/c9en01136f
Carlo Alberto Amadei _{1,

2,

3,

4} , Paula Arribas _{5,

6,

7,

8,

9} , Luis Cruzado _{4,

10,

11,

12} , Chad D. Vecitis _{1,

2,

3,

4}

Affiliation

Carbon-based materials have been used in water engineering to provide more effective and efficient methods to deliver clean water. Recent research efforts have focused on the implementation of nanoarchitectured carbon molecular sieves in membranes. In this study, a hierarchical carbon membrane (HCM), fully constituted by elemental carbon structures from the carbon fiber mechanical support to the graphene oxide selective layer, was fabricated. The assembled HCM was characterized by a combination of surface science tools, capillary flow porometry, thermogravimetric analysis, and membrane performance evaluation. The HCM was resistant to harsh cleaning with hypochlorite solutions and annealing cycles (similar to ceramic membranes). The HCM permeability and rejection performance were evaluated in a cross-flow setup, which indicated that the membrane operates in a nanofiltration regime, with 85% rejection of sulfate ions and 1.3 LMH-bar permeability. In summary, the results here support the emerging research direction of hierarchical fully elemental carbon membrane materials to enhance the membrane technology toolbox for sustainable water resource reuse and wastewater reclamation.

中文翻译：

分层元素碳基载体上的氧化石墨烯膜

碳基材料已用于水工程中，以提供更有效的方法来输送干净的水。最近的研究工作集中在膜上纳米结构碳分子筛的实现上。在这项研究中，制造了一种分层的碳膜（HCM），该碳膜完全由从碳纤维机械载体到氧化石墨烯选择层的元素碳结构构成。组装好的HCM的特点是结合了表面科学工具，毛细管流动孔法，热重分析和膜性能评估。HCM可以抵抗使用次氯酸盐溶液进行的苛刻清洁和退火循环（类似于陶瓷膜）。HCM渗透性和排斥性能在错流装置中进行了评估，这表明该膜在纳滤条件下运行，具有85％的硫酸根离子截留率和1.3 LMH-bar渗透率。总之，这里的结果支持分层全元素碳膜材料的新兴研究方向，以增强膜技术工具箱，以实现可持续的水资源再利用和废水回收。

更新日期：2020-03-21

点击分享查看原文

点击收藏

阅读更多本刊最新论文