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A Facile Synthetic Method to Obtain Bismuth Oxyiodide Microspheres Highly Functional for the Photocatalytic Processes of Water Depuration
Published on: March 29, 2019
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Two bismuth iodate sulfates with enhanced optical anisotropy
Yilin Li1,2,3,4, Chunli Hu1, Jin Chen1,4
1State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou 350002, China. mjg@fjirsm.ac.cn.
Dalton Transactions (Cambridge, England : 2003)
|October 22, 2021
Summary
New bismuth iodate sulfates were synthesized, showing potential for optical applications. These compounds exhibit wide band gaps and significant birefringence, enhanced by iodate groups and bismuth cations.
Area of Science:
- Inorganic Chemistry
- Materials Science
- Crystallography
Background:
- Metal sulfates are important functional materials.
- Bismuth and cadmium compounds are known for unique properties.
- Iodate groups can influence material characteristics.
Purpose of the Study:
- Synthesize novel bismuth iodate sulfates.
- Investigate their crystal structures.
- Evaluate their optical properties, specifically band gap and birefringence.
Main Methods:
- Solvothermal synthesis.
- Single-crystal X-ray diffraction.
- Optical property measurements (band gap, birefringence).
Main Results:
- Successfully synthesized Bi(IO3)(SO4) and CdBi(IO3)(SO4)2.
- Determined their monoclinic crystal structures (space group P21/c).
- Observed wide band gaps (3.91 eV and 4.03 eV) and large birefringence (0.087 and 0.100).
Conclusions:
- The synthesized compounds represent new examples of metal iodate sulfates.
- The crystal structures feature distinct layered and chained architectures.
- Incorporating iodate groups and lone-pair cations like Bi3+ enhances birefringence.
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