Graphene-diatom silica aerogels for efficient removal of mercury ions from water
Date
2015
Authors
Kabiri, S.
Tran, D.
Azari, S.
Losic, D.
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Journal article
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ACS applied materials & interfaces, 2015; 7(22):11815-11823
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Shervin Kabiri, Diana N.H. Tran, Sara Azari, and Dusan Losic
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Abstract
A simple synthetic approach for the preparation of graphene-diatom silica composites in the form of self-assembled aerogels with three-dimensional networks from natural graphite and diatomite rocks is demonstrated for the first time. Their adsorption performance for the removal of mercury from water was studied as a function of contact time, solution pH, and mercury concentration to optimize the reaction conditions. The adsorption isotherm of mercury fitted well with the Langmuir model, representing a very high adsorption capacity of >500 mg of mercury/g of adsorbent. The prepared aerogels exhibited outstanding adsorption performance for the removal of mercury from water, which is significant for environmental applications.
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© 2015 American Chemical Society