Preparation method of Ce1-xZrxO2/tourmaline nanocomposite with high far-infrared emissivity and its mechanism
文献类型：期刊论文
| 作者 | Guo, Bin1,2 ; Yang, Liqing1; Li, Wenlong1,2; Wang, Haojing1; Zhang, Hong1
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| 刊名 | applied physics a-materials science & processing
 |
| 出版日期 | 2016-02-01 |
| 卷号 | 122期号:2页码:1-7 |
| ISSN号 | 0947-8396 |
| 产权排序 | 1 |
| 通讯作者 | guo, bin (guobin@opt.ac.cn) |
| 英文摘要 | far-infrared functional nanocomposites were prepared by the coprecipitation method using natural tourmaline (xy(3)z(6)si(6)o(18)(bo3)(3)v3w, where x is na+, ca2+, k+, or vacancy; y is mg2+, fe2+, mn2+, al3+, fe3+, mn3+, cr3+, li+, or ti4+; z is al3+, mg2+, cr3+, or v3+; v is o2-, oh-; and w is o2-, oh-, or f-) powders, ammonium cerium(iv) nitrate and zirconium(iv) nitrate pentahydrate as raw materials. the reference sample tourmaline modified with ammonium cerium(iv) nitrate alone was also prepared by a similar precipitation route. the results of fourier transform infrared spectroscopy show that ce-zr can further enhance the far-infrared emission properties of tourmaline than ce alone. through characterization by x-ray diffraction (xrd), transmission electron microscopy (tem) and x-ray photoelectron spectroscopy (xps), the mechanism by which ce(-zr) acts on the far-infrared emission property of tourmaline was systematically studied. the xps spectra show that the fe3+ ratio inside tourmaline powders after heat treatment can be raised by doping ce and further raised after adding zr. moreover, it is showed that ce3+ is dominant inside the samples, but its dominance is replaced by ce4+ outside. in addition, xrd results indicate the formation of ceo2 and ce(1-x)zrxo(2) crystallites during the heat treatment, and further, tem observations show they exist as nanoparticles on the surface of tourmaline powders. based on these results, we attribute the improved far-infrared emission properties of ce-zr-doped tourmaline to the enhanced unit cell shrinkage of the tourmaline arisen from much more oxidation of fe2+ (0.074 nm in radius) to fe3+ (0.064 nm in radius) inside the tourmaline caused by zr enhancing the redox shift between ce4+ and ce3+ via improving the oxygen mobility in the ce-zr crystal. |
| WOS标题词 | science & technology ; technology ; physical sciences |
| 类目[WOS] | materials science, multidisciplinary ; physics, applied |
| 研究领域[WOS] | materials science ; physics |
| 关键词[WOS] | ceo2-zro2 mixed oxides ; oxidation catalysts ; storage capacity ; solid-solutions ; heat-treatment ; rare-earth ; tourmaline ; oxygen ; behavior ; gas |
| 收录类别 | SCI ; EI |
| 语种 | 英语 |
| WOS记录号 | WOS:000369972400044 |
| 源URL | [http://ir.opt.ac.cn/handle/181661/27802]  |
| 专题 | 西安光学精密机械研究所_等离子体物理化学应用技术研究中心 |
| 作者单位 | 1.Chinese Acad Sci, Xian Inst Opt & Precis Mech, State Key Lab Transient Opt & Photon, Xian 710119, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Guo, Bin,Yang, Liqing,Li, Wenlong,et al. Preparation method of Ce1-xZrxO2/tourmaline nanocomposite with high far-infrared emissivity and its mechanism[J]. applied physics a-materials science & processing,2016,122(2):1-7. |
| APA | Guo, Bin,Yang, Liqing,Li, Wenlong,Wang, Haojing,&Zhang, Hong.(2016).Preparation method of Ce1-xZrxO2/tourmaline nanocomposite with high far-infrared emissivity and its mechanism.applied physics a-materials science & processing,122(2),1-7. |
| MLA | Guo, Bin,et al."Preparation method of Ce1-xZrxO2/tourmaline nanocomposite with high far-infrared emissivity and its mechanism".applied physics a-materials science & processing 122.2(2016):1-7. |
入库方式： OAI收割
来源：西安光学精密机械研究所
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