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dc.contributor.authorPeng, W.
dc.contributor.authorWang, Shaobin
dc.contributor.authorLi, X.
dc.identifier.citationPeng, W. and Wang, S. and Li, X. 2016. Shape-controlled synthesis of one-dimensional a-MnO2 nanocrystals for organic detection and pollutant degradation. Separation and Purification Technology. 163: pp. 15-22.

Shape control is an important technique for improving the quality and activity of nanomaterials. Two types of one-dimensional manganese dioxide (MnO2) nanocrystals with different shapes were synthesized by facile hydrothermal methods as the catalyst materials for both sensor fabrication and heterogeneous catalytic reactions. The nanomaterials present an α-crystalline phase (α-MnO2) in either nanotube or nanowire shapes. The α-MnO2 nanocrystals were found to have a favorable electrochemical property that can be used to fabricate sensors for rapid detection of hydrogen peroxide and l-ascorbic acid. The α-MnO2 also functioned well as a catalyst for the oxidation of phenol and chlorophenol by peroxymonosulfate and hydrogen peroxide in an aqueous solution at room temperature. Comparison between the two differently shaped α-MnO2 catalysts indicated that nanowires performed better than nanotubes in both electrocatalytic detection and catalytic phenol degradation. Compared to α-MnO2 nanotubes, nanowires have a much greater surface area and lower negative surface charge density, which are probably the main reasons for their higher catalytic activities.

dc.publisherPergamon Press
dc.titleShape-controlled synthesis of one-dimensional a-MnO2 nanocrystals for organic detection and pollutant degradation
dc.typeJournal Article
dcterms.source.titleSeparation and Purification Technology
curtin.departmentDepartment of Chemical Engineering
curtin.accessStatusFulltext not available

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