期刊
JOURNAL OF COLLOID AND INTERFACE SCIENCE
卷 341, 期 1, 页码 153-161出版社
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.jcis.2009.09.027
关键词
Zero-valent iron; Sepiolite; Attapulgite; Palygorskite; XRD; SEM; EDX; Infrared spectroscopy; Adsorption-desorption; Methylene blue
资金
- Queensland University of Technology Inorganic Materials Research Program of the School of Physical and Chemical Sciences
- Australian Research Council (ARC)
In this work, natural palygorskite impregnated with zero-valent iron (ZVI) was prepared and characterized. The combination of ZVI particles on surface of fibrous palygorskite can help to overcome the disadvantage of Ultra-fine powders which may have strong tendency to agglomerate into larger particles, resulting in an adverse effect on both effective Surface area and catalyst performance. There is a significant increase of methylene blue (MB) decolourized efficiency on acid treated palygorskite with ZVI grafted, within 5 min, the concentration of MB in the solution was decreased from 94 mg/L to around 20 mg/L and the equilibration was reached at about 30-60 min with only around 10 mg/L MB remained in solution. Changes in the Surface and Structure of prepared materials were characterized using X-ray diffraction (XRD), infrared (IR) spectroscopy, Surface analysing and scanning electron microscopy (SEM) with element analysis and mapping. Comparing with zero-valent iron and palygorskite, the presence of zero-valent iron reactive species on the palygorskite Surface strongly increases the decolourization capacity for methylene blue, and it is significant for providing novel modified clay catalyst materials for the removal of organic contaminants from waste water. (C) 2009 Elsevier Inc. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据