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不同煅烧温度的N-TiO2制备、表征及可见光催化性能

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朱爽, 林智斌, 吴春山, 王菲凤. 不同煅烧温度的N-TiO2制备、表征及可见光催化性能[J]. 环境工程学报, 2016, 10(6): 2981-2986. doi: 10.12030/j.cjee.201506031
引用本文: 朱爽, 林智斌, 吴春山, 王菲凤. 不同煅烧温度的N-TiO2制备、表征及可见光催化性能[J]. 环境工程学报, 2016, 10(6): 2981-2986. doi: 10.12030/j.cjee.201506031
shu
Zhu Shuang, Lin Zhibin, Wu Chunshan, Wang Feifeng. Preparation and characterization of N-TiO2 nanomaterials calcinated at various temperatures and their visible light photocatalytic performance[J]. Chinese Journal of Environmental Engineering, 2016, 10(6): 2981-2986. doi: 10.12030/j.cjee.201506031
Citation: Zhu Shuang, Lin Zhibin, Wu Chunshan, Wang Feifeng. Preparation and characterization of N-TiO2 nanomaterials calcinated at various temperatures and their visible light photocatalytic performance[J]. Chinese Journal of Environmental Engineering, 2016, 10(6): 2981-2986. doi: 10.12030/j.cjee.201506031
shu

不同煅烧温度的N-TiO2制备、表征及可见光催化性能

  • 1.

    福建师范大学环境科学与工程学院, 福州 350007

  • 基金项目:

    福建省科技厅重点项目(2013Y0034)

  • 中图分类号: X703

Preparation and characterization of N-TiO2 nanomaterials calcinated at various temperatures and their visible light photocatalytic performance

  • 1.

    College of Environmental Science and Engineering, Fujian Normal University, Fuzhou 350007, China

  • Fund Project:

  • 摘要: 以钛酸丁酯为钛源,氯化铵为氮源,采用溶胶-凝胶法,不同煅烧温度条件制备N掺杂TiO2纳米材料,采用X射线粉末衍射(XRD)、傅里叶变换红外(FT-IR)、扫描电镜(SEM)、紫外-可见漫反射(UV-Vis DRS)手段对其进行表征,并通过降解腐殖酸(HA)实验,探讨N-TiO2可见光催化性能。结果表明,制备的光催化纳米材料为锐钛矿相,TiO2光响应范围可拓宽到可见光区;煅烧温度是影响可见光催化活性的重要因素,350℃煅烧的N-TiO2可见光催化活性最佳,光反应140 min后,对初始浓度为5 mg/L的HA溶液降解率达80.32%,光催化反应过程符合准一级动力学,煅烧温度过高或过低,动力学反应速率常数呈现不同程度的减小,降解反应速率明显下降。
    Abstract: N-TiO2 photocatalyst was synthesized using a sol-gel method in the presence of tetrabutyl titanate and ammonium chloride under different calcination temperatures. The prepared samples were characterized by X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FT-IR), scanning electron microscopy (SEM), and UV-Vis diffuse reflectance spectroscopy (DRS). The photocatalytic degradation of humic acid (HA) was also examined to study the visible photocatalytic activity. The crystallographic phase of the N-TiO2 photocatalyst was identified as the anatase phase and its response extended to the visible light region. Furthermore, calcination temperature had a significant effect on the photocatalytic activity of the prepared material, with the ideal annealing temperature for the as-prepared N-TiO2 materials exhibiting optimal visible photocatalytic activity being 350℃. In addition, a degradation rate of ≤80.32% was obtained after 140 min with an initial HA concentration of 5 mg/L. The photocatalytic degradation process followed pseudo-first-order kinetics, and excessively high or low calcination temperatures caused the degradation rate to decrease gradually.
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  • 收稿日期:  2015-07-31
  • 刊出日期:  2016-06-03
朱爽, 林智斌, 吴春山, 王菲凤. 不同煅烧温度的N-TiO2制备、表征及可见光催化性能[J]. 环境工程学报, 2016, 10(6): 2981-2986. doi: 10.12030/j.cjee.201506031
引用本文: 朱爽, 林智斌, 吴春山, 王菲凤. 不同煅烧温度的N-TiO2制备、表征及可见光催化性能[J]. 环境工程学报, 2016, 10(6): 2981-2986. doi: 10.12030/j.cjee.201506031
shu
Zhu Shuang, Lin Zhibin, Wu Chunshan, Wang Feifeng. Preparation and characterization of N-TiO2 nanomaterials calcinated at various temperatures and their visible light photocatalytic performance[J]. Chinese Journal of Environmental Engineering, 2016, 10(6): 2981-2986. doi: 10.12030/j.cjee.201506031
Citation: Zhu Shuang, Lin Zhibin, Wu Chunshan, Wang Feifeng. Preparation and characterization of N-TiO2 nanomaterials calcinated at various temperatures and their visible light photocatalytic performance[J]. Chinese Journal of Environmental Engineering, 2016, 10(6): 2981-2986. doi: 10.12030/j.cjee.201506031
shu

不同煅烧温度的N-TiO2制备、表征及可见光催化性能

  • 1. 福建师范大学环境科学与工程学院, 福州 350007
  • 收稿日期:  2015-07-31
基金项目:

福建省科技厅重点项目(2013Y0034)

摘要: 以钛酸丁酯为钛源,氯化铵为氮源,采用溶胶-凝胶法,不同煅烧温度条件制备N掺杂TiO2纳米材料,采用X射线粉末衍射(XRD)、傅里叶变换红外(FT-IR)、扫描电镜(SEM)、紫外-可见漫反射(UV-Vis DRS)手段对其进行表征,并通过降解腐殖酸(HA)实验,探讨N-TiO2可见光催化性能。结果表明,制备的光催化纳米材料为锐钛矿相,TiO2光响应范围可拓宽到可见光区;煅烧温度是影响可见光催化活性的重要因素,350℃煅烧的N-TiO2可见光催化活性最佳,光反应140 min后,对初始浓度为5 mg/L的HA溶液降解率达80.32%,光催化反应过程符合准一级动力学,煅烧温度过高或过低,动力学反应速率常数呈现不同程度的减小,降解反应速率明显下降。

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