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ONE-DIMENSIONAL ZnO/CNFs HIERARCHICAL HETEROSTRUCTURES WITH ENHANCED PHOTOCATALYTIC ACTIVITY
SHAWEI FU,JINGYING ZHANG,LU SHEN,HUICHUN TAO 성균관대학교(자연과학캠퍼스) 성균나노과학기술원 2014 NANO Vol.9 No.4
In this paper, a facile two-step synthesis route combining an electrospinning technique and vaportransport deposition method has been accepted as a straightforward protocol for the exploitationof ZnO/carbon nano¯bers (CNFs) hierarchical heterostructures which are composed of ZnOnanorods on the surface of CNFs. Photocatalytic tests display that the ZnO/CNFs hetero-structures possess degrading Rhodamine B (RB) at a much higher rate than pure ZnO. Theenhanced photocatalytic activity could be attributed to the e®ective separation of photo-generated carriers driven by the photoinduced potential di®erence, which is generated at theZnO/CNFs heterojunction interface. Moreover, the heterostructures could be reclaimed easily bysedimentation without a decrease of the photocatalytic activity. Such simple and versatilestrategy can provide a general way to fabricate other heterostructures, such as TiO 2 /CNFs.