Journal
JOURNAL OF COLLOID AND INTERFACE SCIENCE
Volume 484, Issue -, Pages 1-9Publisher
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.jcis.2016.08.057
Keywords
Manganese dioxide; Diatomite; Methyl orange; Decolorization; Wastewater treatment
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Funding
- National Natural Science Foundation of China [21576034, 51304256, 51574048]
- Specialized Research Fund for the Doctoral Program of Higher Education of China [20130191130003]
- State Key Laboratory of Coal Mine Disaster Dynamics and Control [2011DA105287-FW201504]
- Chongqing Science and Technology Commission [cstc2015j-cyjA90011]
- International S&T Cooperation Projects of Chongqing [CSTC2013gjhz90001]
- Fundamental Research Funds for the Central Universities [106112016CDJZR245518, 106112016CDJZR135506]
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MnO2 nanostructures with two different morphologies (nanowires and nanosheets) were uniformly deposited on diatomite via a one-pot hydrothermal method. The fast decolorization and high removal capacity for anionic dye-MO over synthesized composites had been clarified. The results revealed that the equilibrium time was shortened to as low as 10-30 min, and the maximum adsorption capacities were 325 mg g(-1) and 420 mg g(-1) for nanowires and nanosheets composites, respectively, under the condition of initial pH 3 and ambient temperature. Indeed, the proposed decolorization mechanism was considered to be simultaneous multi-processes during the dye removal, including physical, physicochemical and chemical process. In principle, well-controlled cost-effective composites have promising ability to remove anionic dye pollutants for environmental remediation. (C) 2016 Elsevier Inc. All rights reserved.
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