氧化石墨烯去除水溶液中的亚甲基蓝。
Removal of methylene blue from aqueous solution by graphene oxide.
机构信息
Institute of Nanochemistry and Nanobiology, Shanghai University, Shanghai 200444, China.
出版信息
J Colloid Interface Sci. 2011 Jul 1;359(1):24-9. doi: 10.1016/j.jcis.2011.02.064. Epub 2011 Mar 6.
Graphene oxide (GO) is a highly effective absorbent of methylene blue (MB) and can be used to remove MB from aqueous solution. A huge absorption capacity of 714 mg/g is observed. At initial MB concentrations lower than 250 mg/L, the removal efficiency is higher than 99% and the solution can be decolorized to nearly colorless. The removal process is fast and more efficient at lower temperatures and higher pH values. The increase of ionic strength and the presence of dissolved organic matter would further enhance the removal process when MB concentration is high. The results indicate that GO can be applied in treating industrial effluent and contaminated natural water. The implications to graphene-based environmental technologies are discussed.
氧化石墨烯（GO）是亚甲基蓝（MB）的高效吸附剂，可用于从水溶液中去除 MB。观察到其具有 714mg/g 的巨大吸附容量。在初始 MB 浓度低于 250mg/L 的情况下，去除效率高于 99%，溶液可被脱色至近乎无色。在较低的温度和较高的 pH 值下，去除过程更快且更有效。当 MB 浓度较高时，离子强度的增加和溶解有机物的存在会进一步增强去除过程。结果表明，GO 可应用于处理工业废水和受污染的天然水。讨论了对基于石墨烯的环境技术的影响。
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