title: Synthesis of core-shell structured zeolite-A@mesoporous silica composites for butyraldehyde adsorption.
abstract: A simple sol-gel process is followed to construct a thin layer of mesoporous silica shell core-shell structure on micrometer sized and nanometer sized zeolite A (micro-zeolite A@SiO2 and nano-zeolite A@SiO2 respectively). Further thickness of the silica shells has been tuned from 20 to 50 nm while the zeolite A particle size changes from nanometer to micrometer. Pores of the silica shells arranged orderly on the crystal-faces of zeolite-A cores. Typically, adsorption amount of the butyraldehyde towards these core-shell composite materials is investigated well and is verified to be almost double than that of the pristine zeolite A. Interestingly the nano-zeolite A core containing core-shell composite absorbs maximum butyraldehyde (314 mg/g) compared to the micro-zeolite A (266 mg/g), even if the mesoporous shell thickness of the nano-zeolite A@SiO2 composites is less (20 nm) than that of micro-zeolite A@SiO2 (50 nm). Both of these values are significantly larger than the pristine zeolite A (nano-zeolite A; 151 mg/g and micro-zeolite A; 146 mg/g).
authors.affiliation: Department of Chemistry, Laboratory of Advanced Materials, Fudan University, Shanghai 200433, PR China; Harmful components and tar reduction in cigarette, Sichuan Key laboratory, Chengdou 610066, PR China.
authors.forename: Haijun
authors.initials: H
authors.lastname: Yu
authors.affiliation: Department of Chemistry, Laboratory of Advanced Materials, Fudan University, Shanghai 200433, PR China.
authors.forename: Yingying
authors.initials: Y
authors.lastname: Lv
authors.affiliation: Harmful components and tar reduction in cigarette, Sichuan Key laboratory, Chengdou 610066, PR China.
authors.forename: Kuoyan
authors.initials: K
authors.lastname: Ma
authors.affiliation: Harmful components and tar reduction in cigarette, Sichuan Key laboratory, Chengdou 610066, PR China.
authors.forename: Changguo
authors.initials: C
authors.lastname: Wang
authors.affiliation: Department of Chemistry, Laboratory of Advanced Materials, Fudan University, Shanghai 200433, PR China.
authors.forename: Zhaoteng
authors.initials: Z
authors.lastname: Xue
authors.affiliation: Department of Chemistry, Laboratory of Advanced Materials, Fudan University, Shanghai 200433, PR China.
authors.forename: Yujuan
authors.initials: Y
authors.lastname: Zhao
authors.affiliation: Department of Chemistry, Laboratory of Advanced Materials, Fudan University, Shanghai 200433, PR China.
authors.forename: Yonghui
authors.initials: Y
authors.lastname: Deng
authors.affiliation: Harmful components and tar reduction in cigarette, Sichuan Key laboratory, Chengdou 610066, PR China. Electronic address: david0209028@126.com.
authors.forename: Ya
authors.initials: Y
authors.lastname: Dai
authors.affiliation: Department of Chemistry, Laboratory of Advanced Materials, Fudan University, Shanghai 200433, PR China. Electronic address: dyzhao@fudan.edu.cn.
authors.forename: Dongyuan
authors.initials: D
authors.lastname: Zhao
keywords: Adsorption; Butyraldehyde; Core–shell; Particle size; Zeolite