The cross-linked imidazolium functionalized anion-exchange membranes is in-situ prepared via reaction of chloromethylated poly(styrene-b-isobutylene-b-styrene) with 1,1’-(1,6-hexanediyl)bisimidazole and N-methylimidazole. composite a small amount modified graphene oxide grafted octadecyl propyl phenyl could be further prepared. These exhibit significantly high chemical stability ionic conductiv...

Microbial reverse electrodialysis cells (MRECs) combine power generation from salinity gradient energy using reverse electrodialysis (RED), with power generation from organic matter using a microbial fuel cell. Waste heat can be used to distill ammonium bicarbonate into high (HC) and low salt concentration (LC) solutions for use in the RED stack, but nitrogen crossover into the anode chamber mu...

One-step purification and desalination The of water for drinking purposes can require multiple filtration steps technologies to remove contaminants such as salts heavy metals. Some could have value if recovered, but these are often discharged in the waste streams. Uliana et al. describe a general approach fabrication robust, tunable, adsorptive membranes through incorporation porous aromatic fr...

A new bio-inspired method was applied in this study to simultaneously improve the monovalent anion selectivity and antifouling properties of anion exchange membranes (AEMs). Three-layer architecture was developed by deposition of polydopamine (PDA) and electro-deposition of N-O-sulfonic acid benzyl chitosan (NSBC). The innermost and outermost layers were PDA with different deposition time. The ...

In article number 2006768, Hyukjin J. Kwon, Geunbae Lim, and Minsoo Lee introduce a multiscale-porous anion exchange membrane (MP-AEM), as an easily accessible anion-permselective material for the electrokinetic concentration of cationic species. The MP-AEM's highly streamlined fabrication process enables convenient cation-selective concentrator assembly, its demonstrated scalability shows grea...

The physisorption of negatively charged single-stranded DNA (ssDNA) of different lengths onto the surface of anion-exchange membranes is sensitively shown to alter the anion flux through the membrane. At low surface concentrations, the physisorbed DNAs act to suppress an electroconvection vortex instability that drives the anion flux into the membrane and hence reduce the overlimiting current t...

Salinity gradient energy is a prominent alternative and maintainable source, which has considerable potential. Reverse electrodialysis (RED) one of the most widely studied methods to extract this energy. Despite progress in research, optimization RED process still ongoing. In study, effects number membrane pairs, ratio salinity feed velocity on power generation via reverse system were investiga...

Hydrogen production using anion exchange membrane water electrolysis (AEMWE) offers hope to the energy crisis faced by humanity. AEM can be coupled with intermittent and renewable sources as well use of low-cost electrocatalysts other stack components. In electrolysis, one biggest advantages is transition metal catalysts instead traditional noble electrocatalysts. AEMWE still in its infancy des...