| Li2CO3-Y3+共掺杂TiO2纳米材料的制备及光催化性能的研究 |
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| 引用本文： | 王月,李雪,王春杰.Li2CO3-Y3+共掺杂TiO2纳米材料的制备及光催化性能的研究[J].人工晶体学报,2019,48(5):861-866. |
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| 作者姓名： | 王月 李雪 王春杰 |
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| 作者单位： | 渤海大学新能源学院,锦州,121013;渤海大学工学院,锦州,121013 |
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| 基金项目： | 国家自然科学基金(11404032,11404034);辽宁省自然科学基金(20170540014,20170540009);辽宁省教育厅一般项目(LY2016002) |
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| 摘 要： | 采用溶胶-凝胶法制备了Y^3+-TiO2纳米粒子,利用X-射线衍射仪(XRD)、扫描电镜(SEM)、紫外-可见光谱(UV-vis)等仪器对样品的物化性质进行了表征。以对亚甲基蓝为目标降解物,考查了Y^3+掺杂对纳米TiO2光催化活性的影响。实验结果表明,掺杂浓度摩尔比为0.03的Y^3+有利于提升TiO2光催化活性,能有效提高对亚甲基蓝的光催化降解效率。对TiO2纳米粒子进行了Y^3+和Li2CO3共掺杂,Li2CO3共掺Y^3+-TiO2相比于Y^3+-TiO2对亚甲基蓝的光催化降解效率有了进一步的提升,同时对相关机理进行了详细的论证,推测Li2CO3在本研究中起到空穴补偿剂而不是电荷补偿剂的作用。
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| 关 键 词： | 纳米TIO2 光催化 共掺 空穴补偿剂 |
Preparation and Photocatalytic Properties of Li2 CO3-Y3+ Co-doped TiO2 Nanomaterials |
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| WANG Yue,LI Xue,WANG Chun-jie.Preparation and Photocatalytic Properties of Li2 CO3-Y3+ Co-doped TiO2 Nanomaterials[J].Journal of Synthetic Crystals,2019,48(5):861-866. |
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| Authors: | WANG Yue LI Xue WANG Chun-jie |
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| Affiliation: | (College of New Energy,Bohai University,Jinzhou 121013,China;College of Engineering,Bohai University,Jinzhou 121013,China) |
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| Abstract: | Y^3+-TiO2 nanoparticles were prepared by sol-gel method. The physicochemical properties of the samples were characterized by X-ray diffractometer (XRD),scanning electron microscope (SEM) and ultraviolet visible spectroscopy (UV-vis). The effect of Y^3+ doping on photocatalytic activity of TiO2 nanomaterials was investigated with methylene blue as the target degradation product. Qualitative analyses indicate that Y^3+ doped TiO2 with the content of 0.03 molar can effectively improve the photocatalytic degradation efficiency of methylene blue. In addition,the photocatalytic degradation efficiency of methylene blue was further improved by Li2CO3-Y^3+ co-doping TiO2 nanomaterials. Furthermore,the related mechanism was discussed in detail. It was speculated that Li2CO3 played a role of hole compensator rather than charge compensator in this study. |
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| Keywords: | nano-TiO2 photocatalyst co-doping hole compensator |
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