Preparation of hollow cone‐like ZnO/CoFe2O4 heterostructures and their photocatalytic properties. (1st April 2015)

• Record Type: Journal Article
• Authors: Ye, Linjing; Yan, Chao; Jiang, Yunjie; Yang, Qianyi; Lu, Chenchen; Guan, Weisheng
• Is Part Of: Micro & nano letters. Volume 10:Number 4(2015)
• Page Start: 202
• Page End: 205
• Publication Date: 2015-04-01
• Subjects: nanocomposites -- nanofabrication -- zinc compounds -- cobalt compounds -- photochemistry -- catalysis -- surface morphology -- surface composition -- nanomagnetics -- scanning electron microscopy -- transmission electron microscopy -- X‐ray diffraction -- surface magnetism -- ferromagnetic materials -- drugs -- wide band gap semiconductors -- II‐VI semiconductors -- semiconductor‐insulator boundaries -- catalysts; hollow cone‐like heterostructures -- photocatalytic properties -- nanocomposites -- two‐step hydrothermal route -- Si substrate -- material structure -- composition -- morphology -- magnetic property -- scanning electron microscopy -- transmission electron microscopy -- X‐ray diffractometer -- vibrating sample magnetometer -- bone structure -- cone‐like feature -- surface‐to‐volume ratio -- photodegradation -- visible light -- recyclability -- ferromagnetism -- tetracycline degradation -- size 200 nm to 300 nm -- time 120 min -- ZnO‐CoFe2O4 -- Si; Nanotechnology -- Periodicals; Nanostructures -- Periodicals; Microtechnology -- Periodicals; 620.5
• DOI: 10.1049/mnl.2014.0586
• Languages: English
• ISSNs: 1750-0443

Abstract

Abstract : Heterostructures of hollow cone‐like ZnO/CoFe2 O4 nanocomposites (NPs) are successfully fabricated by a two‐step hydrothermal route with the assistance of Si substrate as the template. The material structure, composition, morphology as well as the magnetic property have been investigated via scanning electron microscopy, transmission electron microscopy, an X‐ray diffractometer and a vibrating sample magnetometer. Photocatalytic performance was also examined. The NPs have a bone‐structure of ZnO coated with CoFe2 O4 NPs, which have a cone‐like feature with a diameter of 200–300 nm and 200 nm in the hole with a large surface‐to‐volume ratio. It is the special heterostructures that bring about a novel high surface area leading to highly efficient photo‐degradation in visible light and recyclability because of ferromagnetism. The degradation of tetracycline of NPs reaches 81.03% in 120 min.