La掺杂纳米ZnO/硅藻土复合材料的制备及其对甲醛气体的降解性能

doi:10.11901/1005.3093.2018.114

材料研究学报

2018, Vol. 32

Issue (9): 685-690 DOI: 10.11901/1005.3093.2018.114

本期目录 | 过刊浏览

La掺杂纳米ZnO/硅藻土复合材料的制备及其对甲醛气体的降解性能

李勰¹(

), 朱晓东², 王婷婷¹, 王会³

1 宁波工程学院材料与化学工程学院宁波 315211
2 宁波市产品质量监督检验研究院宁波 315699
3 中国科学院上海高等研究院上海 201210

Degradation of Formaldehyde Gas by Composites of La-doped Nano ZnO/diatomite

Xie LI¹(

), Xiaodong ZHU², Tingting WANG¹, Hui WANG³

1 Department of Material and Chemical Engineering, Ningbo University of Technology, Ningbo 315211, China
2 Ningbo Academy of Product Quality Supervision Inspection, Ningbo 315699, China
3 Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai 201210, China

引用本文:

李勰, 朱晓东, 王婷婷, 王会. La掺杂纳米ZnO/硅藻土复合材料的制备及其对甲醛气体的降解性能[J]. 材料研究学报, 2018, 32(9): 685-690.
Xie LI, Xiaodong ZHU, Tingting WANG, Hui WANG. Degradation of Formaldehyde Gas by Composites of La-doped Nano ZnO/diatomite[J]. Chinese Journal of Materials Research, 2018, 32(9): 685-690.

全文: PDF(3672 KB) HTML

摘要:

用两相界面法合成一系列不同含量的稀土La掺杂的ZnO纳米粒子,然后用三氯乙酸对ZnO纳米粒子进行表面活化并与酸处理后的硅藻土混合,用溶胶凝胶技术制备了改性ZnO/硅藻土复合材料。使用傅里叶变换红外(FT-IR)光谱、粉末X射线衍射(XRD)、扫描电镜(SEM)、热重分析(TG)等手段对所制备的材料进行表征,研究了改性纳米ZnO/硅藻土复合材料对甲醛的降解性能。结果表明:与纯ZnO材料相比,La掺杂使ZnO复合纳米材料在可见光区域降解甲醛的性能大幅度提高。

关键词 ：复合材料, La:ZnO, 两相界面, 甲醛降解, 稀土掺杂, 光催化剂

Abstract：

A series of ZnO nanoparticles doped with different La-content were synthesized by two-phase interface method. Then the surface of ZnO nanoparticles was activated by trichloroacetic acid, and finally, the composite of modified ZnO/diatomite was prepared by using sol gel technology. The nanoparticles were characterized by Fourier transform infrared (FTIR) spectra, X-ray diffraction (XRD), scanning electron microscopy (SEM), thermogravimetric analysis (TG) and other techniques. Results show that in comparison to the composite with the blank nano-ZnO, the degradation of formaldehyde induced by the composite with the La doped nano-ZnO in the visible region has been greatly improved.

Key words： composite La:ZnO two phase interface degradation of formaldehyde rare earth doped photocatalyst

收稿日期: 2018-01-17

ZTFLH:

TQ133

基金资助:国家自然科学基金(21405085)

作者简介:

作者简介李勰,男,1985年生

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https://www.cjmr.org/CN/10.11901/1005.3093.2018.114 或 https://www.cjmr.org/CN/Y2018/V32/I9/685

图1 两相界面法反应示意图

图2 模拟仓环境示意图

表1 不同镧掺杂量的氧化锌的平均晶粒尺寸

图3 不同镧掺杂量的氧化锌样品粉末X射线衍射谱图

图4 不同镧掺杂量的氧化锌样品扫描电镜图

图5 稀土La掺杂量对甲醛降解效果的影响

图6 ZnO、1.0%La:ZnO和1.0% La:ZnO /硅藻土复合材料的红外图谱

图7 ZnO、1.0%La:ZnO和1.0% La:ZnO/硅藻土复合材料的热重分析

图8 硅藻土、1.0%La:ZnO和硅藻土基纳米ZnO对甲醛气体吸附降解效果的比较

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