Affiliation:
1. College of Textile Science and Engineering (International Institute of Silk) Zhejiang Sci‐Tech University Hangzhou China
2. Nanjing Vocational Institute Mechatronic Technology Nanjing China
3. Xiangshan Knitting Institute Zhejiang Sci‐Tech University Ningbo China
Abstract
AbstractThe pollution caused by oily wastewater has a severe influence on the human health and ecological environment. However, the present membranes suffer from a bottleneck that it is difficult to synchronously improve the filtration efficiency and permeation flux. It is still of great importance to develop efficient oil‐in‐water separation membranes. Herein, we have prepared a nanonet membrane (NM) with both nanonet structure and nano‐mastoid structure through a combination of phase inversion with electrospinning. Profiting from the structural advantages of network interconnectivity, sub‐micrometer pores, and high porosity, the NMs demonstrated outstanding capacity for separating nanoscale oil‐in‐water emulsions with a prospective separation efficiency (99.2%) and robust permeation flux (24,076 L m−2 h−1). Importantly, benefitting from their good surface wettability and low underwater oil adhesion, the NMs maintained a stable permeation flux (7738 L m−2 h−1) and stable high separation efficiency (99.1%) even after 10 separation cycles. The synthesis of such nanonet membranes may develop new paths for the development of next‐generation separation membranes with high performance.
Funder
Basic Public Welfare Research Program of Zhejiang Province
Subject
Materials Chemistry,Polymers and Plastics,Physical and Theoretical Chemistry