Synthesis of ω-Bi 2 O 3 micropyramids with excellent photocatalytic properties

Micro & nano letters

article

Zezhong Xu¹  Chengliang Han²  Jinsong Xie² 

[1] Analytical and Testing Center, Hefei University;School of Energy Materials and Chemical Engineering, Hefei University

关键词: bismuth compounds;    crystal growth from solution;    visible spectra;    ultraviolet spectra;    photocatalysis;    photocatalysts;    energy gap;    ω-bismuth oxide micropyramids;    excellent photocatalytic properties;    novel triclinic bismuth oxide;    facile hydrothermal method;    potassium sodium tartrate;    reaction time;    outstanding photocatalytic activity;    methyl orange degradation;    visible light irradiation;    band gap energy;    potassium sodium tartrate concentration;    Bi2O3;   

DOI  :  10.1049/mnl.2019.0330

学科分类：计算机科学（综合）

来源: Wiley

【 摘 要 】

Novel triclinic bismuth oxide (ω-Bi 2 O 3 ) microcrystals with a pyramid-like shape were successfully synthesised by a facile hydrothermal method. The effects of potassium sodium tartrate (KNaC 4 H 4 O 6 ·4H 2 O) concentration and the reaction time on the morphology were investigated, respectively. The experimental results showed that the tartrate (C 4 H 4 O 6 2– ) ions were responsible for the crystal growth of pyramid-like ω-Bi 2 O 3 at the same reaction time. The photocatalytic activity of ω-Bi 2 O 3 pyramids was evaluated by degrading methyl orange under the visible-light irradiation, revealing the ω-Bi 2 O 3 pyramids exhibited outstanding photocatalytic activity due to its suitable bandgap energy.

【 授权许可】

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