Polydopamine nanotubes-templated synthesis of TiO<sub>2</sub> and its photocatalytic performance under visible light

Zehuan Wang; Jia Li; Feng Tang; Jun Lin; Zhaoxia Jin

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Polydopamine nanotubes-templated synthesis of TiO₂ and its photocatalytic performance under visible light

机译：聚多巴胺纳米管为模板的TiO _{2 的合成及其在可见光下的光催化性能}

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Herein, we demonstrated that an efficient TiO₂ visible-light photocatalyst can be fabricated by templating mesoporous polydopamine (PDA) nanotubes. Because PDA is a nitrogen-doped carbon source, PDA nanotubes as templates elicited distinct advantages for obtained mesoporous TiO₂. First, they introduced a codopant of carbon and nitrogen into anatase TiO₂ that narrowed its band gap. Second, they could be graphitized in an optimized calcination process to form graphene-like carbon layers on TiO₂ surfaces with high conductivity, which assisted the separation of photogenerated electron–holes of TiO₂. These features endow TiO₂@C-PDA (400-2) excellent photocatalytic performance for the degradation of methyl orange under visible-light irradiation (>420 nm).

机译：在本文中，我们证明了可以通过模板化介孔聚多巴胺（PDA）纳米管来制备有效的TiO _{2 可见光光催化剂。由于PDA是一种氮掺杂碳源，因此以PDA纳米管为模板为获得介孔TiO _{2 带来了明显的优势。首先，他们将碳和氮的共掺杂物引入到锐钛矿型TiO _{2 中，从而缩小了其带隙。其次，可以在优化的煅烧过程中对它们进行石墨化处理，从而在具有高导电性的TiO _{2 表面上形成类石墨烯碳层，从而有助于分离光生电子空穴。 TiO _{2 。这些特征赋予了TiO _{2 @ C-PDA（400-2）优异的光催化性能，在可见光（> 420 nm）下降解甲基橙。}}}}}}

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《RSC Advances》 |2017年第38期|共8页
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Zehuan Wang; Jia Li; Feng Tang; Jun Lin; Zhaoxia Jin;
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7. Polydopamine nanotubes-templated synthesis of TiO2 and its photocatalytic performance under visible light [O] . Zehuan Wang, Jia Li, Feng Tang, 2017

机译：聚二胺纳米管 - 模板合成的TiO2及其在可见光下的光催化性能

Polydopamine nanotubes-templated synthesis of TiO2 and its photocatalytic performance under visible light

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Polydopamine nanotubes-templated synthesis of TiO₂ and its photocatalytic performance under visible light