Enhanced sieving of cellulosic microfiber membranesviatuning of interlayer spacing

Abstract

Functionally active membranes made of cellulosic microfibers (CMF) have emerged as promising sorbents for the removal of nano-sized pollutants from water. The adsorption efficiency of these membranes has been increased...

High‐Rate and Long‐Life Au Nanorods/LiFePO4 Composite Cathode for Lithium‐Ion Batteries

“…[ 2 ] However, the Li + diffusion channel in LFP is 1D, which can easily be affected by the pathway's defects and impurities. [ 3 ] The small Li + diffusion coefficient and low electronic conductivity limit the development of LFP. [ 4 ]…”

Microscopic Hybrid Membranes Made of Cellulose-Based Materials Tuned for Removing Metal Ions from Industrial Effluents

“…In this context, nanocellulose, prepared through a top-down approach from wood biomass and, in particular, microfibrillated cellulose (MFC), has shown high efficiency for the removal of various pollutants and has been modified and improved for this action extensively by several groups. − Indeed, MFC has unique characteristic properties, including high aspect ratio (>100), crystallinity (65–95%), tensile strength (200–300 MPa), elastic modulus (6–7 GPa), and low ζ-potential (−10 mV). , Furthermore, the MFC adsorption ability and its tendency to form stable networks when dried make it an excellent candidate for flat sheet membranes or module processing. As demonstrated by our group in earlier works, − MFC could be a useful, functional, and robust biobased material in the field of water purification.…”

“…The quantitative analysis of the functional groups was performed via titration. , The surface ζ-potential of the suspensions was measured using a Mutek SZP 06, MUTEK instrument (SI).…”

“…The increasing population growth, urbanization, and rapid industrialization are continually putting pressure on the global water demand, which is translated into an alarming scenario where available freshwater supply is no longer matching the patterns of the running developments. − Pressure-derived membrane separation has long served as a feasible option to provide safe water in many deserted areas, coastal regions, or remote. − Despite its versatility in tackling water scarcity, this type of membrane has been unfavorably addressed as the most energy-intensive water treatment technology with high costs and energy demand. , These combined requirements are often beyond the impoverished communities’ possibilities that desperately need low-cost, safe drinking water. Furthermore, most polymeric membranes for water filtration (microfiltration to ultrafiltration), including hollow fibers and spiral wound, are manufactured by the phase inversion method ,, that produces structures with intrinsic limitations, like low water flux (high energy cost), high fouling tendency, and an asymmetric pore morphology across the membrane thickness. − …”

“…We have faced this issue using the traditional paper-making approach through the Experimental Paper Machine (XPM) and introduced pulp fibers (5–25 μm diameter) as a matrix during the preparation process for improving the porosity of the pristine MFC membranes. These fibers have a more open networking potential ,, and determine an ultrafast water flow in the microfiltration range. We selected the commercial-grade MFC with a high charge density and characterized it with a great variety of experimental techniques and computational studies at the atomic level.…”