Selective hydrothermal synthesis of BiOBr microflowers and Bi{sub 2}O{sub 3} shuttles with concave surfaces

Journal Article · Wed Jun 15 00:00:00 EDT 2011 · Journal of Solid State Chemistry

DOI:https://doi.org/10.1016/j.jssc.2011.04.015· OSTI ID:21580118

Peipei, Xiao; Lingling, Zhu ^[1]

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1. Hefei National Laboratory for Physical Science at Microscale and Department of Chemistry, University of Science and Technology of China, Hefei, Anhui 230026 (China)

Through controlling the amount of NaOH added, BiOBr and Bi{sub 2}O{sub 3} with different shapes were hydrothermally synthesized in the reaction system of Bi(NO{sub 3}){sub 3}-hexadecyl trimethyl ammonium bromide (CTAB)-NaOH. As 8 mmol of NaOH was added, BiOBr microflowers constructed of nanoflakes were synthesized. The thickness of these single-crystal nanoflakes was about 20 nm. In the similar condition, when the amount of NaOH added was 28 mmol, Bi{sub 2}O{sub 3} shuttles with concave surfaces were obtained. The length of these shuttles was 100 {mu}m and the diameter at the middle of these shuttles was 50 {mu}m. The photocatalytic activity of as-prepared BiOBr microflowers was evaluated by the degradation of methyl orange (MO) under visible-light irradiation ({lambda}>420 nm), which was up to 96% within 90 min. - Graphical abstract: Through controlling the amount of NaOH added, BiOBr microflowers and Bi{sub 2}O{sub 3} shuttles with concave surfaces were hydrothermally synthesized in the reaction system of Bi(NO{sub 3}){sub 3}-hexadecyl trimethyl ammonium bromide (CTAB)-NaOH. Highlights: > BiOBr microflowers constructed of nanoflakes were synthesized hydrothermally. > Bi{sub 2}O{sub 3} shuttles with concave surfaces were also synthesized. > Their formation mechanisms were studied based on the experimental results. > The photocatalytic activity of BiOBr microflowers was evaluated under visible-light irradiation.

• OSTI ID: 21580118
• Journal Information: Journal of Solid State Chemistry, Vol. 184, Issue 6; Other Information: DOI: 10.1016/j.jssc.2011.04.015; PII: S0022-4596(11)00183-6; Copyright (c) 2011 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; ISSN 0022-4596
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
AMMONIUM COMPOUNDS
BISMUTH NITRATES
BISMUTH OXIDES
BROMIDES
HYDROTHERMAL SYNTHESIS
IRRADIATION
METHYL ORANGE
MONOCRYSTALS
PHOTOCATALYSIS
RABBIT TUBES
SODIUM HYDROXIDES
SURFACES
THICKNESS
VISIBLE RADIATION
ALKALI METAL COMPOUNDS
AMINES
AZO COMPOUNDS
AZO DYES
BISMUTH COMPOUNDS
BROMINE COMPOUNDS
CATALYSIS
CHALCOGENIDES
CRYSTALS
DIMENSIONS
DYES
ELECTROMAGNETIC RADIATION
HALIDES
HALOGEN COMPOUNDS
HYDROGEN COMPOUNDS
HYDROXIDES
INDICATORS
NITRATES
NITROGEN COMPOUNDS
ORGANIC ACIDS
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
ORGANIC SULFUR COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
RADIATIONS
REACTION PRODUCT TRANSPORT SYSTEMS
REACTOR COMPONENTS
REACTOR EXPERIMENTAL FACILITIES
SODIUM COMPOUNDS
SULFONIC ACIDS
SYNTHESIS