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Title: Hydrothermal synthesis of Ca{sub 3}Bi{sub 8}O{sub 15} rods and their visible light photocatalytic properties

Graphical abstract: The novel Ca{sub 3}Bi{sub 8}O{sub 15} rods can utilize the sunlight efficiently with the small band-gap. Using methyl orange (MO) as a model organic pollutant, the photocatalysts exhibited good photocatalytic activity, with the photodegradation conversion ratio of MO being up to 90% after 2 h of visible light (420 nm < λ < 800 nm) irradiation. - Highlights: • Ca{sub 3}Bi{sub 8}O{sub 15} rods were synthesized by a hydrothermal method. • They can utilize the sunlight efficiently with the small band-gap. • They showed good photocatalytic activities in the degradation of MO, RhB and 4-CP. • The conversion ratio of MO was up to 90% after 2 h of visible light irradiation. - Abstract: High efficient visible light Ca{sub 3}Bi{sub 8}O{sub 15} photocatalysts were synthesized by a hydrothermal method. Characterized by X-ray diffractometer, transmission electron microscopy, and the UV–vis diffuse reflectance spectroscopy, the results showed that the novel Ca{sub 3}Bi{sub 8}O{sub 15} rods can utilize the sunlight efficiently with the small band-gap. Using methyl orange (MO) as a model organic pollutant, the photocatalysts exhibited good photocatalytic activity, with the photodegradation conversion ratio of MO being up to 90% after 2 h of visible light (420 nm < λmore » < 800 nm) irradiation. Furthermore, they also showed good photocatalytic activities in the degradation of rhodamine B and p-chlorophenol. Through the investigation of the degraded mechanism, the main active species played important roles in the degradation process were holes, O{sub 2}·{sup −} and ·OH.« less
Authors:
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Publication Date:
OSTI Identifier:
22348584
Resource Type:
Journal Article
Resource Relation:
Journal Name: Materials Research Bulletin; Journal Volume: 51; Other Information: Copyright (c) 2013 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; 37 INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY; HYDROTHERMAL SYNTHESIS; INORGANIC COMPOUNDS; IRRADIATION; METHYL ORANGE; PHOTOCATALYSIS; POLLUTANTS; SPECTROSCOPY; TRANSMISSION ELECTRON MICROSCOPY; X-RAY DIFFRACTOMETERS