The application of zeolite/fac composites in protein separation

Wang, D.J.; Zhang, Y.H.; Xu, Fang; Shan, Wei; Zhu, Guibo; Yang, Pengyuan; Tang, Yi

doi:10.1016/s0167-2991(04)80742-0

Cited by 7 publications

(6 citation statements)

References 26 publications

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“…Lipase immobilized on thiol-functionalized mesoporous ZSM-5 was also an efficient biocatalyst (Figure ). Similarly, a hierarchical Zn 2+ -exchanged ZSM-5/fly ash cenosphere material was also prepared for separating two different proteins …”

Section: Applicationsmentioning

confidence: 99%

Hierarchically Structured Zeolites: From Design to Application

et al. 2020

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Hierarchical zeolites combine the intrinsic catalytic properties of microporous zeolites and the enhanced access and transport of the additional meso-and/or macroporous system. These materials are the most desirable catalysts and sorbents for industry and become a highly evolving field of important current interests. In addition to the enhanced mass transfer leading to high activity, selectivity, and cycle time, another essential merit of the hierarchical structure in zeolite materials is that it can significantly improve the utilization effectiveness of zeolite materials resulting in the minimum energy, time, and raw materials consumption. Substantial progress has been made in the synthesis, characterization, and application of hierarchical zeolites. Herein, we provide an overview of recent achievements in the field, highlighting the significant progress in the past decade on the development of novel and remarkable strategies to create an additional pore system in zeolites. The most innovative synthesis approaches are reviewed according to the principle, versatility, effectiveness, and degree of reality while establishing a firm link between the preparation route and the resultant hierarchical pore quality in zeolites. Zeolites with different hierarchically porous structures, i.e., micro-mesoporous structure, micromacroporous structure, and micro-meso-macroporous structure, are then analyzed in detail with concrete examples to illustrate their benefits and their fabrications. The significantly improved performances in catalytic, environmental, and biological applications resulting from enhanced mass transport properties are discussed through a series of representative cases. In the concluding part, we envision the emergence of "material-properties-by-quantitative and real rational design" based on the "generalized Murray's Law" that enables the predictable and controlled productions of bioinspired hierarchically structured zeolites. This Review is expected to attract important interests from catalysis, separation, environment, advanced materials, and chemical engineering fields as well as biomedicine for artificial organ and drug delivery systems.

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Section: Applicationsmentioning

confidence: 99%

Hierarchically Structured Zeolites: From Design to Application

et al. 2020

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“…Compared to GF, CNF has a larger surface area and physical dimensions closer to the epoxy molecular length. [27]…”

Section: Three-point Bending Testmentioning

confidence: 99%

Improved sand erosion resistance and mechanical properties of multifunctional carbon nanofiber nanopaper‐enhanced fiber reinforced epoxy composites

et al. 2017

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Multifunctional carbon nanofiber (CNF) nanopaper-enhanced glass fiber reinforced epoxy polymer composites (GFRPC) with improved sand erosion resistance, mechanical properties, and electromagnetic interference (EMI) shielding have been fabricated and tested in this work. Preformed CNF thin film or nanopaper, made of dense and entangled nanofiber networks, was molded on the surface of GFRPC as a surface protection layer by vacuum-assisted resin transfer molding. A fivefold improvement in sand erosion resistance in terms of sand erosion rate, and up to 24% improvement in flexural strength were achieved after the incorporation of CNF nanopaper onto thin GFRPC. The CNF nanopaper-enhanced GFRPC showed an EMI shielding of 33-40 dB within a frequency range of 30 MHz to 1.5 GHz. This multifunctional composite material shows good potential for use in wind power industry, commercial electronics housings, and the automotive industry. K E Y W O R D S carbon nanofiber, electromagnetic interference shielding, flexural strength, nanopaper, sand erosion How to cite this article: Zhang D, Cabrera E, Zhao Y, Zhao Z, Castro JM, Lee LJ. Improved sand erosion resistance and mechanical properties of multifunctional carbon nanofiber nanopaper-enhanced fiber reinforced epoxy composites.

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“…The first step of the assembly procedure for zeolite composite is the seeding process. A homogeneous layer of nanosilicalite-1 was seeded onto the support FAC in accordance with the layer-by-layer (LbL) technique described in the literature [11]. Secondly, a clear hydrogel with composition of (TPA) 2 O: 32.5, SiO 2 : 130, EtOH: 1564 H 2 O was stirred for 24 h for aging under ambient temperature to obtain the precursor.…”

Section: Preparation and Characterization Of Sorbentsmentioning

confidence: 99%

“…It has been reported that nanosized zeolite as seeds could be fabricated on various supports for the preparation of hierarchical micro/meso/macroporous zeolite composite [9][10][11]. Fly ash cenosphere (FAC), an aluminosilicate-rich waste produced in coal-firing power plants, could be a kind of feasible support for zeolite composite, based on its economical low cost; excellent chemical/physical stability; and non-toxic release of its component [10,11]. Recently, the nanozeolite composite zeolite/FAC with a hierarchical porous structure has been successfully prepared by us through a seed-induced hydrothermal treatment method [10,11].…”

Section: Introductionmentioning

confidence: 99%