Abstract
Carbon nanospheres prepared using a facile spray pyrolysis method display good adsorption to arsenate and selenate compared to commercial activated carbon, due to the presence of basic surface groups, high surface-to-volume ratio, and suitable microporous structure.
Highlights
Carbon nanosphere adsorbents for removal of arsenate and selenate from water Man Li, Chengwei Wang, Michael J
The carbon nanospheres displayed good binding to both metals in DI water and outperformed commercial activated carbons for arsenate removal in pH > 8, likely due to the presence of basic surface functional groups, high surface-to-volume ratio, and suitable micropores formed during the synthesis
We have found that carbon nanospheres prepared using a facile spray pyrolysis method can display good activity for arsenate and selenate adsorption in synthetic DI water solutions
Summary
Carbon nanosphere adsorbents for removal of arsenate and selenate from water Man Li, Chengwei Wang, Michael J. The carbon nanospheres displayed good binding to both metals in DI water and outperformed commercial activated carbons for arsenate removal in pH > 8, likely due to the presence of basic surface functional groups, high surface-to-volume ratio, and suitable micropores formed during the synthesis. Carbon nanotube and graphene-based sorbents have been demonstrated for removal of metals such as mercury,[6] arsenic,[7,8,9] chromium,[10,11,12] and selenium[13] with promising results Such carbon nanostructures may have cost prohibitive synthesis methods and cytotoxicity issues.[14,15,16] For instance, a recent report found that graphene oxide amplified the phytotoxicity of arsenate in wheat plants and affected the plants' natural detoxification
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