Preparation of expandable vertically aligned carbon nanotube arrays/polydimethylsiloxane membrane by a modular splicing method and its application inin situethanol recovery from ethanol fermentation

Abstract

A module splicing method is developed for preparing an area expandable membrane that is applied to coupled fermentation and separation.

Enhanced Pervaporation of the Poly(dimethylsiloxane) (PDMS) Mixed Matrix Membrane Based on the Self-Assembly of Multidimensional Carbon Nanomaterials

“…Various inorganic nanoparticles with intrinsic microporosity, such as metal–organic frameworks (MOFs) and zeolite molecular sieves, have been used as nanofillers to improve the dehydration performance of the PDMS membrane. This improvement is mainly attributed to the selective adsorption of solvent molecules by the affinity of their functional groups and the selective sieving channels formed by their intrinsic pore structure. ,,− In addition, some one-dimensional (1D) and two-dimensional (2D) nanomaterials, such as SiO 2 and CNTs, have been used as nanofillers, where the researchers mainly focused on their ultrahigh specific surface area and the rapid permeation channels created between the PDMS matrix and the nanofillers. − Since SiO 2 and CNTs lack pore structures, the rapid permeation channels at the interface with the PDMS matrix do not provide selective sieving for the solvent molecules. Therefore, the membrane flux increases significantly, while the membrane’s separation factor remains relatively low. − The same principle applies to the prepared P-CNTs@rGO/PDMS membrane.…”