Effects of Co and Ni on visible light photocatalytic properties of layered double hydroxide films. (1st April 2018)

• Record Type: Journal Article
• Authors: Yu, Huan; Wang, Wei‐Wei; Li, Jiao; Cong, Ri‐Min
• Is Part Of: Micro & nano letters. Volume 13:Number 4(2018)
• Page Start: 432
• Page End: 435
• Publication Date: 2018-04-01
• Subjects: cobalt compounds -- nickel compounds -- photodissociation -- catalysis -- thin films -- scanning electron microscopy -- transmission electron microscopy -- X‐ray diffraction -- ultraviolet spectra -- visible spectra -- organic compounds -- aggregation; visible light photocatalytic properties -- layered double hydroxide films -- conductive cloth -- hydrothermal method -- electron microscopy -- X‐ray diffraction -- UV‐vis diffuse reflectance spectroscopy -- morphology -- crystal structure -- optical properties -- photocatalytic activity -- methyl orange degradation -- visible light irradiation -- photogenerated charges -- particle aggregation -- reductive sites; Nanotechnology -- Periodicals; Nanostructures -- Periodicals; Microtechnology -- Periodicals; 620.5
• DOI: 10.1049/mnl.2017.0836
• Languages: English
• ISSNs: 1750-0443

Abstract

Abstract : Altering the composition of layered double hydroxides (LDHs) is an effective method for changing their properties. In this study, LDH films with different compositions were fabricated on conductive cloth by using a hydrothermal method. Electron microscopy, X‐ray diffraction, and UV–vis diffuse reflectance spectroscopy were used to investigate the morphology, crystal structure, and optical properties of the LDH films. The photocatalytic activity of LDHs with different compositions in the degradation of methyl orange was investigated under visible light irradiation. Our experimental results show that the reductive sites (Ni(II) and Co(II)) of LDHs and the conductive substrate improve the separation of photogenerated charges and prevent the particle aggregation of LDHs. LDH films (NiAl‐LDHs, NiFe‐LDHs, and CoAl‐LDHs) with reductive sites (Ni(II) and Co(II)) exhibit higher visible light photocatalytic performance.