Ultrafast Nanofiltration through Large-Area Single-Layered Graphene Membranes
Ultrafast Nanofiltration through Large-Area Single-Layered Graphene Membranes
复制标题
通过大面积单层石墨烯膜的超快纳滤
DOI：
10.1021/acsami.7b00504
复制
发表时间：
2017
影响因子：
9.5
通讯作者：
Xue, Jianming
中科院分区：
文献类型：
--
作者：
Qin, Yanzhe;Hu, Yongyou;Koehler, Stephan;Cai, Liheng;Wen, Junjie;Tan, Xiaojun;Xu, Weiwei L.;Sheng, Qian;Hou, Xu;Xue, Jianming
穿孔单层石墨烯已经证明了比最先进的聚合物膜大几个数量级的选择性和通量。然而，只有个别石墨烯片的尺寸高达几十微米已成功地制造加压渗透研究。这些具有最小裂纹和针孔的原子膜的按比例放大和增强仍然是实际应用的主要障碍。我们开发了一种大面积原位相转化浇铸技术，以制造63 cm 2高质量单层穿孔石墨烯膜，用于超快纳米过滤，可在高达50 bar的压力下运行。这一结果证明了我们的技术用于创建强大的大面积，高质量，单层石墨烯及其作为加压纳滤膜的潜在用途的可行性。
Perforated single-layered graphene has demonstrated selectivity and flux that is orders of magnitude greater than state-of-the-art polymer membranes. However, only individual graphene sheets with sizes up to tens of micrometers have been successfully fabricated for pressurized permeation studies. Scaling-up and reinforcement of these atomic membranes with minimum cracks and pinholes remains a major hurdle for practical applications. We develop a large-area in situ, phase-inversion casting technique to create 63 cm2high-quality single-layered perforated graphene membranes for ultrafast nanofiltration that can operate at pressures up to 50 bar. This result demonstrates the feasibility of our technique for creating robust large-area, high quality, single-layered graphene and its potential use as a pressurized nanofiltration membrane.