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AN IMPROVED METHOD FOR THE SYNTHESIS OF D-MNO2 NANOCOMPOSITES WITH ENHANCED PHOTOCATALYTIC ACTIVITY
AN IMPROVED METHOD FOR THE SYNTHESIS OF D-MNO2 NANOCOMPOSITES WITH ENHANCED PHOTOCATALYTIC ACTIVITY
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机译：增强光催化活性的D-MNO2纳米复合材料的合成方法
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ABSTRACTTITLE: AN IMPROVED METHOD FOR THE SYNTHESIS OF d-MnO2 NANOCOMPOSITES WITH ENHANCED PHOTOCATALYTIC ACTIVITYAdvancement in synthesis of nanoscale hierarchical flower-like MnO2 nanostructures through a light-assisted decomposition of a manganese precursor over the outer surfaces of halloysite clay comprising cylindrical shaped nanotube with an open ended lumen along the tube, bearing a characteristic of positive octahedral array of Al–OH groups at the inner surfaces and negative Si–O–Si groups at the outer surfaces functionalized with aminosilane, originating a green nanocomposite. The present findings indicate the successful formation of d-MnO2 flowery nanostructures comprising of assemblies of intersected nanosheets, which essentially produces a nanocomposite that exhibits enhanced photocatalytic efficiency for the degradation of organic dyes under natural sunlight irradiation without requirement of additional oxygen. The outstanding performance of clay nanotube/d-MnO2 nanocomposites over presently reported manganese catalysts, together with the facile fabrication method, represents an alternative and environmentally benign greener route to develop low-cost heterogeneous photocatalyst for the degradation of refractory complex organic pollutants.
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