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Graphene Oxide Treated by Temperature with Enhancement of Adsorption for Organic Pollutants and Catalytic Degradation with Hydrogen Peroxide
Summary
Researchers investigated how thermal treatment of graphene oxide (GO) at varying temperatures in air affects its ability to adsorb organic pollutants and catalytically degrade them with hydrogen peroxide. They found that adsorption and catalytic performance peaked at an intermediate treatment temperature due to optimal oxygen-containing functional group density, demonstrating a tunable remediation material for organic pollutant removal from water.
Abstract Graphene oxide (GO) has been used in the range of organic pollutants adsorption and degradation. It’s important to improve the performance of GO in the treatment of organic pollutants. Here, we found that the organic pollutants were more efficiently removed in the catalytic degradation of hydrogen peroxide (H 2 O 2 ) after being pre-adsorbed with GO. The performance of GO in degrading organic pollutants firstly enhanced and then weakened as the treated temperature increases in the air. The adsorption ability of GO for organic pollutants and catalytic activity of H 2 O 2 were highest at 500 ℃, which can be ascribed to the highest oxygen-containing functional groups and the lowest defects on GO after 500 ℃ treatment in the air. This finding will improve the understanding and application of GO in organic pollutants treatment. Graphical Abstract
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