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La3+/TiO2中空微球的制备及模型汽油光催化氧化脱硫性能

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刘布雷, 张改, 高敏, 马爱洁, 陈卫星. La3+/TiO2中空微球的制备及模型汽油光催化氧化脱硫性能[J]. 环境工程学报, 2018, 12(12): 3371-3378. doi: 10.12030/j.cjee.201806135
引用本文: 刘布雷, 张改, 高敏, 马爱洁, 陈卫星. La3+/TiO2中空微球的制备及模型汽油光催化氧化脱硫性能[J]. 环境工程学报, 2018, 12(12): 3371-3378. doi: 10.12030/j.cjee.201806135
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LIU Bulei, ZHANG Gai, GAO Min, MA Aijie, CHEN Weixing. Preparation of La3+/TiO2 hollow microsphere and its photocatalytic oxidation desulfurization performance of model gasoline[J]. Chinese Journal of Environmental Engineering, 2018, 12(12): 3371-3378. doi: 10.12030/j.cjee.201806135
Citation: LIU Bulei, ZHANG Gai, GAO Min, MA Aijie, CHEN Weixing. Preparation of La3+/TiO2 hollow microsphere and its photocatalytic oxidation desulfurization performance of model gasoline[J]. Chinese Journal of Environmental Engineering, 2018, 12(12): 3371-3378. doi: 10.12030/j.cjee.201806135
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La3+/TiO2中空微球的制备及模型汽油光催化氧化脱硫性能

  • 1.

    西安工业大学材料与化工学院，西安 710021

  • 基金项目:

    国家自然科学青年基金资助项目(21501139 )

    陕西省自然科学基础研究计划重大基础研究项目（2017ZDJC-22）

Preparation of La3+/TiO2 hollow microsphere and its photocatalytic oxidation desulfurization performance of model gasoline

  • 1.

    School of Materials and Chemical Engineering, Xi’an Technological University, Xi’an 710021, China

  • Fund Project:

  • 摘要: 以碳球为模板，Ti (SO4) 2和 La (NO3) 3为原料，采用分段水热法制备了La3+/TiO2中空微球前驱体，在O2 气氛下，450 ℃煅烧得到La3+/TiO2中空微球。利用XRD、SEM、XPS和UV-vis等测试手段对其相组成，形貌和光吸收特性进行了表征与分析。通过噻吩模拟含硫污染物研究了其光催化氧化脱硫性能和光催化氧化反应机制。结果表明：分段水热法合成的La3+/TiO2中空微球光催化性能优于P25，促进了光生电子和空穴的分离，并将光响应范围扩展到可见光区；可见光照射210 min，模型汽油中含硫污染物的脱除率可达91.45%，实现了深度脱硫。
    Abstract: In this study, hollow La3+/TiO2 microsphere precursor was synthesized by segmented hydrothermal method when carbonsphere was taken as templates and Ti (SO4) 2, La (NO3) 3 were taken as raw materials. Then the La3+/TiO2 hollow microspheres were produced by calcining above precursor at 450 ℃ in O2 atmosphere. The crystal structure, morphology and light absorption properties of these microsphere catalysts were identified by X-ray diffraction (XRD), scanning electron microscopy (SEM), X-ray photoelectron spectroscopy (XPS) and ultraviolet-visible (UV-vis) spectroscopy. Through taking thiophene as the simulated sulfur-containing pollutant, their photocatalytic oxidation desulfurization performance and photocatalytic oxidation reaction mechanism were studied. The results show that the La3+/TiO2 hollow microspheres synthesized by segmented hydrothermal method promote the separation between photoelectron and hole and extend the light response to the visible light area, which have a better photocatalytic activity than P25. After 210 min visible light irradiation, the removal rate of sulfur contained pollutants in model gasoline can reach 91.45%, and a deep desulfurization was obtained.
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  • 刊出日期:  2018-11-29

La3+/TiO2中空微球的制备及模型汽油光催化氧化脱硫性能

  • 1. 西安工业大学材料与化工学院，西安 710021
基金项目:

国家自然科学青年基金资助项目(21501139 )

陕西省自然科学基础研究计划重大基础研究项目（2017ZDJC-22）

摘要: 以碳球为模板，Ti (SO4) 2和 La (NO3) 3为原料，采用分段水热法制备了La3+/TiO2中空微球前驱体，在O2 气氛下，450 ℃煅烧得到La3+/TiO2中空微球。利用XRD、SEM、XPS和UV-vis等测试手段对其相组成，形貌和光吸收特性进行了表征与分析。通过噻吩模拟含硫污染物研究了其光催化氧化脱硫性能和光催化氧化反应机制。结果表明：分段水热法合成的La3+/TiO2中空微球光催化性能优于P25，促进了光生电子和空穴的分离，并将光响应范围扩展到可见光区；可见光照射210 min，模型汽油中含硫污染物的脱除率可达91.45%，实现了深度脱硫。

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