| 纤锌矿型β-CuGa1-xZnxO2的Zn2+取代Ga3+不等价掺杂对其结构及光催化性质的影响 |
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| 引用本文： | 姚明彩,杨强,孟健,刘孝娟.纤锌矿型β-CuGa1-xZnxO2的Zn2+取代Ga3+不等价掺杂对其结构及光催化性质的影响[J].高等学校化学学报,2021,42(12):3561. |
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| 作者姓名： | 姚明彩 杨强 孟健 刘孝娟 |
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| 作者单位： | 1.稀土资源与利用国家重点实验室, 中国科学院长春应用化学研究所, 长春 130022;2.中国科学技术大学应用化学与工程学院, 合肥 230026 |
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| 基金项目： | 吉林省自然科学基金(20190201106JC);国家自然科学基金委员会-中国工程物理研究院NSAF联合基金(U2130114) |
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| 摘 要： | 采用离子交换法制备了Zn2+在Ga-位不等价掺杂的功能陶瓷材料（β-CuGa1-xZnxO2）. 通过X射线衍射（XRD）和透射电子显微镜（TEM）对材料的晶体结构进行表征, 通过原位高温X射线衍射（HT-XRD）和同步热分析仪（TG-DSC）对材料的热稳定性进行表征, 通过紫外-可见漫散射光谱（UV-Vis DRS）以及第一性原理计算对材料的光学性质进行研究, 并通过甲基橙（MO）的降解反应评价了Zn2+在Ga-位的引入对该功能陶瓷光催化性能的影响. 结果显示, Zn2+的引入引起带隙变宽, 吸光范围变窄, 自发极化变小, 进而导致单位时间内生成的高活性物质减少, 不利于降解反应. 通过光致发光光谱（PL）对降解机理进行了初步探究. 根据实验结果提出了改进β-CuGaO2性质的可能方法.
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| 关 键 词： | β-CuGa1-xZnxO2 不等价掺杂 光催化降解 |
| 收稿时间： | 2021-07-30 |
Effect of Zn2+ Substituting Ga3+ on Structure and Photocatalytic Properties of Wurtzite β-CuGa1-xZnxO2 with Unequal Doping |
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| YAO Mingcai,YANG Qiang,MENG Jian,LIU Xiaojuan.Effect of Zn2+ Substituting Ga3+ on Structure and Photocatalytic Properties of Wurtzite β-CuGa1-xZnxO2 with Unequal Doping[J].Chemical Research In Chinese Universities,2021,42(12):3561. |
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| Authors: | YAO Mingcai YANG Qiang MENG Jian LIU Xiaojuan |
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| Institution: | 1.State Key Laboratory of Rare Earth Resource Utilization，Changchun Institute of Applied Chemistry，Chinese Academy of Sciences，Changchun 130022，China;2.College of Applied Chemistry and Engineering，University of Science and Technology of China，Hefei 230026，China |
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| Abstract: | Functional ceramic material with unequal doping of Zn2+ at the Ga-site， β-CuGa1-xZnxO2， were synthesized via ion exchange method. Firstly， the crystal structure of the material was investigated by means of X-ray diffraction（XRD） and transmission electron microscopy（TEM）. Furthermore， the thermal stability of the material was studied by in?situ high temperature X-ray diffraction（HT-XRD） and synchronous thermal analyzer（TG-DSC）. Next， the optical properties of the material were assessed by UV-Vis diffuse scattering spectroscopy（UV-Vis DRS） and first principles calculations. Then， the effect of the introduction of Zn2+ at the Ga-site on the performance of the ceramic was evaluated by the degradation reaction of methyl orange（MO）. The results showed that the introduction of Zn2+ is unfavorable to the degradation reaction. Finally， the degradation mechanism was investigated by photoluminescence spectroscopy（PL）. In summary， based on the above experimental results， another possible method to improve the properties of β-CuGaO2 is proposed. |
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| Keywords: | β-CuGa1-xZnxO2 Non-equivalent doping Photo-catalytic degradation |
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