SnO2/α-Fe2O3 nanoheterostructures with novel architecture are fabricated by a facile two-step hydrothermal process. The composite products exhibit morphology with six-fold symmetry resulting from the heteronucleation and crystallographically-oriented growth of SnO2 nanorods on the regular surfaces of the hollowed α-Fe2O3 nanoprisms. The visible photocatalytic properties of the SnO2/α-Fe2O3 nanoheterostructures are found to be superior to their components, attributed to the charge separation effect of the hetero-interfaces between the SnO2 and α-Fe2O3 phases.
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Xu et al. (2011) studied this question.
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