Chitosan/ZIF‐8 Mixed‐Matrix Membranes for Pervaporation Dehydration of Isopropanol

Abstract

Zeolitic imidazolate frameworks (ZIF-8) nanoparticles were successfully synthesized and embedded into a chitosan (CS) polymeric matrix to prepare CS/ZIF-8 mixed-matrix membranes (MMMs) in order to investigate the effect of ZIF-8 addition as novel filler on the dehydration performance of the CS polymeric membrane. MMMs were evaluated using pervaporation (PV) dehydration of isopropanol (IPA). The synthesized ZIF-8 nanoparticles and MMMs were characterized by X-ray diffraction, scanning electron microscopy, energy-dispersive X-ray spectroscopy, Fourier transform infrared spectroscopy, and a swelling study. The PV performance of the prepared MMMs with different ZIF-8 loadings for IPA dehydration was investigated. For the ZIF-8/CS MMMs, at the optimum loading the total flux increases significantly with low separation factor reduction. The good PV performance of the ZIF-8-incorporated CS membranes for dehydration of IPA is demonstrated.

High performance membranes containing zeolitic imidazolate framework‐8 and polysulfone for CO2 removal from CH4

“…2, the XRD pattern of ZIF‐8 shows intense characteristic peaks at 2θ values of 7.56°, 10.58°, 12.94°, and 18.27°. The XRD pattern obtained for the ZIF‐8 particle synthesized in this work is comparable to those results found in the literature 41 . Meanwhile, it can be observed from Fig.…”

Pervaporation separation of ethyl acetate from aqueous solutions using ZSM-5 filled dual-layer poly(ether-block-amide)/polyethersulfone membrane

“…Different zeolites such as NaA, 21 NaY, 22 NaX, 23,24 ZIF-8 (ref. 25) and ZSM-5 (ref. [26][27][28][29][30] have been blended with polymers for the fabrication MMMs in the pervaporation process.…”

Carbon materials derived from chitosan/cellulose cryogel-supported zeolite imidazole frameworks for potential supercapacitor application

“…The peak at 1621 cm −1 increased after NC coated with CCL or CCS, attributing to the C C vibration between ZIF-7 and CL/CS (Gao, Hai, Baigude, Guan, & Liu, 2016). In addition, an obvious peak at 1160 cm −1 of NC@CCS should be attributed to the presence of C N stretching vibrations (Fazlifard, Mohammadi, & Bakhtiari, 2017) originating in amino group of chitosan.…”