标题: Facile Synthesis of Anatase-Rutile Diphase N-doped TiO2 Nanoparticles with Excellent Visible Light Photocatalytic Activity
作者: Liu, J (Liu, Jun); Li, XL (Li, Xuli); Hou, HB (Hou, Haobo); Zhou, M (Zhou, Min)
来源出版物: CATALYSTS 卷: 10 期: 10 文献号: 1126 DOI: 10.3390/catal10101126 出版年: OCT 2020
摘要: To further boost the charge separation and photocatalytic activity of TiO2 under visible light, the anatase-rutile mixed-phase nitrogen-doped (N-doped) TiO2 nanoparticles were successfully synthesized through a facile one-step calcining procedure using TiN as raw materials. The crystal phases, morphologies, chemical compositions, textural structures, and optical properties of as-obtained N-doped TiO2 were characterized by the corresponding analytical techniques. The photocatalytic activities of as-fabricated samples were evaluated by degrading 4-chlorophenol (4-CP) and methylene blue (MB) aqueous solution under visible light irradiation. The results revealed that the ratio of rutile to anatase increased with the improvement of sintering temperature, and the sample prepared at 500 degrees C had the best photocatalytic activity. This might be because it possessed the most appropriate rutile/anatase proportion as well as the nitrogen doping. The transient photocurrent responses, photoluminescence spectra (PL) measurements, and active species trapping experiments were implemented to disclose the photocatalytic mechanism. This work will provide a further insight into the synthesis of highly efficient N-doped TiO2 photocatalysts for organic contaminant removal.
作者关键词: N-doped TiO2; charge separation; photocatalytic activity
地址: [Liu, Jun; Li, Xuli; Hou, Haobo; Zhou, Min] Wuhan Univ, Sch Resource & Environm Sci, Wuhan 430072, Peoples R China.
[Liu, Jun; Li, Xuli; Hou, Haobo; Zhou, Min] Hubei Environm Remediat Mat Engn Technol Res Ctr, Wuhan 430072, Peoples R China.
通讯作者地址: Hou, HB; Zhou, M (通讯作者)，Wuhan Univ, Sch Resource & Environm Sci, Wuhan 430072, Peoples R China.
Hou, HB; Zhou, M (通讯作者)，Hubei Environm Remediat Mat Engn Technol Res Ctr, Wuhan 430072, Peoples R China.
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