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Highly Water‐Dispersible Fe 3 O 4 Single Nanocrystals: Gram‐Scale Preparation by a Solution‐Phase Route and Application for the Absorption of Cd 2+ in Water
Author(s) -
Guan XiaoHui,
Zheng BoTian,
Lu Min,
Guan Xin,
Wang GuangSheng,
Guo Lin
Publication year - 2012
Publication title -
chempluschem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.801
H-Index - 61
ISSN - 2192-6506
DOI - 10.1002/cplu.201100023
Subject(s) - nanocrystal , aqueous solution , adsorption , materials science , nanoparticle , absorption (acoustics) , phase (matter) , saturation (graph theory) , analytical chemistry (journal) , particle size , metal , yield (engineering) , inorganic chemistry , chemistry , nuclear chemistry , nanotechnology , chromatography , organic chemistry , mathematics , combinatorics , composite material , metallurgy
Fe 3 O 4 nanocrystals with narrow particle size distribution (10–15 nm) were produced in high yield by using a simple solution‐phase method at room temperature. In this approach, the iron oxide nanocrystals can be continually prepared through controlling the pH value of the solution. The as‐synthesized Fe 3 O 4 nanoparticles are single‐crystalline and exhibit high saturation magnetization. New adsorbents of Fe 3 O 4 nanocrystals immobilized on bacterial cellulose (FNBC) were prepared by a simple blending method in the hope of removing heavy metal ions from aqueous solutions. The FNBC showed significantly higher affinity for removing Cd 2+ compared to BC. In addition, the effect of characteristic parameters such as pH value, adsorption time by simulating the adsorptive kinetics, and adsorptive isotherms were also investigated.