Anionic starch-induced Cu-based composite with flake-like mesostructure for gas-phase propanal efficient removal

CORC > 生态环境研究中心 > 中国科学院生态环境研究中心 > 环境纳米材料实验室

	Anionic starch-induced Cu-based composite with flake-like mesostructure for gas-phase propanal efficient removal
	He, Chi; Liu, Xiaohe; Shi, Jianwen; Ma, Chunyan; Pan, Hua; Li, Guilin
刊名	JOURNAL OF COLLOID AND INTERFACE SCIENCE
	2015-09-15
卷号	454 页码:216-225
关键词	Catalytic oxidation Chelating Anionic starch Mesoporous metal composite VOCs
英文摘要	Highly crystalline flake-like CuCeO2-delta composites (strCCx) with large specific surface area and developed mesoporosity were prepared using an economic and effective bio-template route. Modified starch with abundant surface carboxyl groups was adopted as the chelating agent and template for metal cations immobilization via electrostatic attraction predominately based on the process of -COO-. . .Cu2+ and -COO-. . .Ce3+. Physicochemical properties of prepared materials were systematically explored by FT-IR, XRD, TG, N-2 adsorption/desorption, FE-SEM, TEM, H-2-TPR, O-2-TPD, XPS, DRUV-Vis, and XAFS techniques. Propanal as a typical oxygen-contained VOC was adopted as the probe pollutant to evaluate the catalytic performance of synthesized materials. Characterization results reveal that plenty of copper ions in composite oxides are incorporated into CeO2 lattice, which produces oxygen vacancies and enhances metal reducibility. Both specific surface area and pore volume of strCCx samples decreased with the increasing of Cu loading. The flake-like CuCeO2-delta sample (Cu/(Cu + Ce) = 0.15) with highest specific surface area (108.2 m(2)/g) and surface oxygen concentration is indentified as the most active catalyst with propanal totally destructed at 230 degrees C. The introduction of H2O has a negative effect on propanal removal, and the synthesized catalyst has high tolerance to moisture. In conclusion, the specific surface area and surface oxygen density are two vital factors governing the catalytic activity of composite catalysts. (C) 2015 Elsevier Inc. All rights reserved.
研究领域[WOS]	Chemistry, Physical
WOS记录号	WOS:000356996700025
公开日期	2016-03-15
内容类型	期刊论文
源URL	[http://ir.rcees.ac.cn/handle/311016/32701]
专题	生态环境研究中心_环境纳米材料实验室
推荐引用方式 GB/T 7714	He, Chi,Liu, Xiaohe,Shi, Jianwen,et al. Anionic starch-induced Cu-based composite with flake-like mesostructure for gas-phase propanal efficient removal[J]. JOURNAL OF COLLOID AND INTERFACE SCIENCE,2015,454:216-225.
APA	He, Chi,Liu, Xiaohe,Shi, Jianwen,Ma, Chunyan,Pan, Hua,&Li, Guilin.(2015).Anionic starch-induced Cu-based composite with flake-like mesostructure for gas-phase propanal efficient removal.JOURNAL OF COLLOID AND INTERFACE SCIENCE,454,216-225.
MLA	He, Chi,et al."Anionic starch-induced Cu-based composite with flake-like mesostructure for gas-phase propanal efficient removal".JOURNAL OF COLLOID AND INTERFACE SCIENCE 454(2015):216-225.