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Ti3+自掺杂TiO2纳米管/g-C3N4复合材料的制备及可见光催化性能

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李凯, 魏停, 高政纲, 高善民. Ti3+自掺杂TiO2纳米管/g-C3N4复合材料的制备及可见光催化性能[J]. 环境化学, 2016, 35(5): 1020-1026. doi: 10.7524/j.issn.0254-6108.2016.05.2015112004
引用本文: 李凯, 魏停, 高政纲, 高善民. Ti3+自掺杂TiO2纳米管/g-C3N4复合材料的制备及可见光催化性能[J]. 环境化学, 2016, 35(5): 1020-1026. doi: 10.7524/j.issn.0254-6108.2016.05.2015112004
shu
LI Kai, WEI Ting, GAO Zhenggang, GAO Shanmin. Preparation and visible-light photocatalytic performance of Ti3+ self-doped TiO2 nanotubes/g-C3N4 composites[J]. Environmental Chemistry, 2016, 35(5): 1020-1026. doi: 10.7524/j.issn.0254-6108.2016.05.2015112004
Citation: LI Kai, WEI Ting, GAO Zhenggang, GAO Shanmin. Preparation and visible-light photocatalytic performance of Ti3+ self-doped TiO2 nanotubes/g-C3N4 composites[J]. Environmental Chemistry, 2016, 35(5): 1020-1026. doi: 10.7524/j.issn.0254-6108.2016.05.2015112004
shu

Ti3+自掺杂TiO2纳米管/g-C3N4复合材料的制备及可见光催化性能

  • 1.

    鲁东大学化学与材料科学学院, 烟台, 264025

  • 基金项目:

    山东省自然科学基金重点基金(ZR2013EM001),山东省科技发展计划(2014GSF117015)资助.

Preparation and visible-light photocatalytic performance of Ti3+ self-doped TiO2 nanotubes/g-C3N4 composites

  • 1.

    College of Chemistry and Materials Science, Ludong University, Yantai, 264025, China

  • Fund Project: Supported by the Key Project of Natural Science Foundation of Shandong Province(ZR2013EM001), Science and Technology Development Plan Project of Shandong Province (2014GSF117015).

  • 摘要: 以低温退火制得的TiO2纳米管和三聚氰胺为原料,经过一步煅烧制备Ti3+自掺杂TiO2纳米管/g-C3N4复合材料.采用热重分析(TGA)、X-射线衍射(XRD)、透射电子显微镜(TEM)、X-射线光电子能谱(XPS)和紫外-可见漫反射光谱(UV-Vis DRS)对Ti3+自掺杂TiO2纳米管/g-C3N4复合材料的热稳定性、组成、结晶性、形貌、化学价态和光学性能等进行了表征.结果表明,将H2Ti3O7预处理后再与三聚氰胺混合热处理,产物是Ti3+自掺杂TiO2纳米管/g-C3N4复合材料,而未经预处理的H2Ti3O7与三聚氰胺混合后热处理得到的是Ti3+自掺杂TiO2纳米颗粒/g-C3N4复合材料.罗丹明B((RhB)水溶液为模拟废水,以300 W氙灯(λ > 420 nm)为光源,研究了所得产物的可见光催化降解性能.结果表明,与纯的TiO2和g-C3N4相比,Ti3+自掺杂TiO2纳米管/g-C3N4复合材料具有最佳的光催化降解性能,光催化降解80 min时,对RhB的降解率达98.4%.这得益于Ti3+及TiO2-x纳米管与g-C3N4构筑的异质结提高了材料对可见光的响应性能,加快了光生电子的传输和分离,降低了电子和空穴的复合几率.
    Abstract: Ti3+ self-doped TiO2 nanotube/g-C3N4 heterojunctions were successfully synthesized by one-step calcination method using TiO2 nanotube obtained by low temperature annealing and melamine as the raw materials. Thermogravimetry (TGA), X-ray diffraction (XRD), transmission electron microscopy (TEM), X-ray photoelectron spectroscopy (XPS) and UV-Vis diffuse reflectance spectroscopy (UV-Vis DRS) were used to characterize the thermostability, crystallinity structure, morphology, chemical state and optical property of the as-prepared Ti3+ self-doped TiO2 nanotube/g-C3N4 heterojunctions. The results indicated that Ti3+ self-doped TiO2 nanotube/g-C3N4 heterojunctions were obtained when H2Ti3O7 was pretreated. Ti3+ self-doped TiO2 nanoparticles/g-C3N4 heterojunctions were obtained by directly mixed H2Ti3O7 and melamine and then heat treated the mixture. The photocatalytic activities of the heterojunctions were studied by degrading rhodamine B (RhB) under a 300 W xenon lamp (λ>420 nm). The results indicated that the Ti3+ self-doped TiO2 nanotube/g-C3N4 composites exhibited excellent photocatalytic activities than the pure g-C3N4 and TiO2 nanotubes. 98.4% degradation efficiency was achieved after 80 min photocatalytic degradation by using the Ti3+ self-doped TiO2 nanotube/g-C3N4 heterojunction as photocatalyst. The high efficiency might be due to the existence of Ti3+ and the heterojunction structures between TiO2-x nanotubes and g-C3N4 nanosheets, which were helpful for extending visible light reponse and preventing the recombination of photogenerated electrons and holes.
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  • 收稿日期:  2015-11-19
  • 刊出日期:  2016-05-15
李凯, 魏停, 高政纲, 高善民. Ti3+自掺杂TiO2纳米管/g-C3N4复合材料的制备及可见光催化性能[J]. 环境化学, 2016, 35(5): 1020-1026. doi: 10.7524/j.issn.0254-6108.2016.05.2015112004
引用本文: 李凯, 魏停, 高政纲, 高善民. Ti3+自掺杂TiO2纳米管/g-C3N4复合材料的制备及可见光催化性能[J]. 环境化学, 2016, 35(5): 1020-1026. doi: 10.7524/j.issn.0254-6108.2016.05.2015112004
shu
LI Kai, WEI Ting, GAO Zhenggang, GAO Shanmin. Preparation and visible-light photocatalytic performance of Ti3+ self-doped TiO2 nanotubes/g-C3N4 composites[J]. Environmental Chemistry, 2016, 35(5): 1020-1026. doi: 10.7524/j.issn.0254-6108.2016.05.2015112004
Citation: LI Kai, WEI Ting, GAO Zhenggang, GAO Shanmin. Preparation and visible-light photocatalytic performance of Ti3+ self-doped TiO2 nanotubes/g-C3N4 composites[J]. Environmental Chemistry, 2016, 35(5): 1020-1026. doi: 10.7524/j.issn.0254-6108.2016.05.2015112004
shu

Ti3+自掺杂TiO2纳米管/g-C3N4复合材料的制备及可见光催化性能

  • 1. 鲁东大学化学与材料科学学院, 烟台, 264025
  • 收稿日期:  2015-11-19
基金项目:

山东省自然科学基金重点基金(ZR2013EM001),山东省科技发展计划(2014GSF117015)资助.

摘要: 以低温退火制得的TiO2纳米管和三聚氰胺为原料,经过一步煅烧制备Ti3+自掺杂TiO2纳米管/g-C3N4复合材料.采用热重分析(TGA)、X-射线衍射(XRD)、透射电子显微镜(TEM)、X-射线光电子能谱(XPS)和紫外-可见漫反射光谱(UV-Vis DRS)对Ti3+自掺杂TiO2纳米管/g-C3N4复合材料的热稳定性、组成、结晶性、形貌、化学价态和光学性能等进行了表征.结果表明,将H2Ti3O7预处理后再与三聚氰胺混合热处理,产物是Ti3+自掺杂TiO2纳米管/g-C3N4复合材料,而未经预处理的H2Ti3O7与三聚氰胺混合后热处理得到的是Ti3+自掺杂TiO2纳米颗粒/g-C3N4复合材料.罗丹明B((RhB)水溶液为模拟废水,以300 W氙灯(λ > 420 nm)为光源,研究了所得产物的可见光催化降解性能.结果表明,与纯的TiO2和g-C3N4相比,Ti3+自掺杂TiO2纳米管/g-C3N4复合材料具有最佳的光催化降解性能,光催化降解80 min时,对RhB的降解率达98.4%.这得益于Ti3+及TiO2-x纳米管与g-C3N4构筑的异质结提高了材料对可见光的响应性能,加快了光生电子的传输和分离,降低了电子和空穴的复合几率.

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