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Indexed by:期刊论文

Date of Publication:2018-09-15

Journal:MICROPOROUS AND MESOPOROUS MATERIALS

Included Journals:SCIE

Volume:268

Page Number:243-250

ISSN No.:1387-1811

Key Words:Zeolite; Faujasite; Graphene; Adsorbent; Template-free growth

Abstract:Template-free synthesis of faujasite type zeolite was investigated in the presence of graphene oxide (GO) in the synthesis sol. Nano-sized FAU/EMT, nano-sized FAU, and micro-sized FAU can be obtained depending on synthesis conditions such as precursor molar ratios, crystallization temperature, and the use of freeze-drying to alter water content. The obtained GO/Faujasite powder was shaped in the form of a disk by vacuum filtration. The shaped GO/Faujasite powder is electrically conductive (similar to 0.4 S/m & 2000-3000 Omega/sq), mechanically stable (Young's modulus: similar to 7 MPa) and contains micropores, mesopores, and macropores. Furthermore, the GO/Faujasite disk exhibits high methylene blue adsorption capacity and can be regenerated by thermal annealing at 300 degrees C without significant capacity loss.