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Modifying Fe3O4 nanoparticles with humic acid for removal of Rhodamine B in water

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成果类型:
期刊论文
作者:
Peng, Liang*;Qin, Pufeng;Lei, Ming;Zeng, Qingru;Song, Huijuan;Yang, Jiao;Shao, Jihai;Liao, Bohan;Gu, Jidong
通讯作者:
Peng, Liang
作者机构:
[Peng, Liang] Hunan Agr Univ, Coll Resource & Environm, Dept Environm Sci & Engn, Changsha 410128, Hunan, Peoples R China.
[Peng, Liang; Song, Huijuan] Cent S Univ, Sch Met Sci & Technol, Changsha 410083, Hunan, Peoples R China.
[Gu, Jidong] Univ Hong Kong, Lab Environm Toxicol, Sch Biol Sci, Hong Kong, Hong Kong, Peoples R China.
通讯机构:
[Peng, Liang] Hunan Agr Univ, Coll Resource & Environm, Dept Environm Sci & Engn, Changsha 410128, Hunan, Peoples R China.
语种:
英文
关键词:
Nano-Fe3O4;Rhodamine B;Nanostructure;Separations;Adsorption;Interface
期刊:
Journal of Hazardous Materials
ISSN:
0304-3894
年:
2012
卷:
209-210
页码:
193-198
基金类别:
National Natural Science Foundation of China [21007014, 21107024]; Start Foundation of Hunan Agricultural University [10YJ01]; National Science and Technology Major Projects [2009ZX07212-001-05]; National Environmental Protection Public Welfare Program [201009047]; Key Laboratory of Production Environment; Agro-product Safety of Ministry of Agriculture, Tianjin Key Laboratory of Agro-environment and Food Safety [2010-KJ-KF-03]; Scientific Research Fund of Hunan Provincial Education Department [11C0650]
机构署名:
本校为第一且通讯机构
院系归属:
资源环境学院
摘要:
Humic acid (HA) modifying Fe<inf>3</inf>O<inf>4</inf> nanoparticles (Fe<inf>3</inf>O<inf>4</inf>/HA) was developed for removal of Rhodamine B from water. Fe<inf>3</inf>O<inf>4</inf>/HA was prepared by a coprecipitation procedure with cheap and environmentally friendly iron salts and HA. TEM images revealed the Fe<inf>3</inf>O<inf>4</inf>/HA (with ~10nm Fe<inf>3</inf>O<inf>4</inf> cores) were aggregated as aqueous suspensions. With a saturation magnetization of 61.2emu/g, the Fe<inf>3</inf>O<inf>4</inf>/HA could be simply recovered from water with magnetic separations at low magnetic field gradients within a few minutes. Sorption of the Rhodamine B to Fe<inf>3</inf>O<inf>4</inf>/HA reached equilibrium in less than 15min, and agreed well to the Langmuir adsorption model with maximum adsorption capacities of 161.8mg/g. The Fe<inf>3</inf>O<inf>4</inf>/HA was able to remove over 98.5% of Rhodamin B in water at optimized pH. &copy;2012 Elsevier B.V.

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