Zirconium dioxide nanopowders with incorporated Si4+ ions as efficient photocatalyst for degradation of trichlorophenol using simulated solar light
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- 作者：M.V. Carevića ; N.D. Abazovića ; T.B. Novakovićb ; V.B. Pavlovićc ; M.I. Čomora ; mirjanac@vinca.rs" class="auth_mail" title="E-mail the corresponding author
- 关键词：Zirconia ; Triclorophenol-TCP ; Photocatalysis ; Surface modification ; Super oxide radicals
- 刊名：Applied Catalysis B: Environmental
- 出版年：2016
- 出版时间：15 October 2016
- 年：2016
- 卷：195
- 期：Complete
- 页码：112-120
- 全文大小：2365 K
文摘
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Pure ZrO2 and with incorporated Si4+ ions were synthesized by hydrothermal method with high active surfaces.
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Incorporation of Si4+ ions stabilized tetragonal phase while pure zirconia had monoclinic crystalline phase.
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Optical properties revealed presence of oxygen vacancies and other intraband states in all materials, with Ebg from 5 to 3.8 eV.
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All zirconia powders were successfully used for photodegradation of TCP using simulated solar light, ZrO2 with Si ions were better than Degussa.
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Superoxide radicals that can be formed at the zirconia surface are, most probably, responsible for their photoefficacy.