Effect of nano-sized cerium zirconium oxide solid solution on far-infrared emission properties of tourmaline powders
文献类型：期刊论文
| 作者 | Guo, Bin1,2 ; Yang, Liqing1; Hu, Weijie1,2; Li, Wenlong1,2; Wang, Haojing1
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| 刊名 | modern physics letters b
 |
| 出版日期 | 2015-11-10 |
| 卷号 | 29期号:30 |
| 关键词 | Tourmaline cerium-zirconium oxide solid solution nanoparticle far-infrared emission property far-infrared functional nanocomposites oxygen evolution |
| 英文摘要 | far-infrared functional nanocomposites were prepared by the co-precipitation 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 tourmaline modified with ce and zr has a better far-infrared emission property than tourmaline modified with ce alone. through characterization by transmission electron microscopy (tem), x-ray diffraction (xrd), and x-ray photoelectron spectroscopy (xps), the mechanism for oxygen evolution during the heat process in the two composite materials was systematically studied. the xps spectra show that fe3+ ratio inside tourmaline modified with ce alone can be raised by doping zr. moreover, it is showed that there is a higher ce3+ ratio inside the tourmaline modified with ce and zr than tourmaline modified with ce alone. in addition, xrd results indicate the formation of ceo2 and ce1-xzrxo2 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+ to fe3+ inside the tourmaline caused by the change in the catalyst redox properties of ceo2 brought about by doping with zr4+. in all samples, tourmaline modified with 7.14 wt.% ce and 1.86 wt.% zr calcined at 800 degrees c for 5 h has the best far-infrared emission property with the maximum emissivity value of 98%. |
| WOS标题词 | science & technology ; physical sciences |
| 学科主题 | physics, applied ; physics, condensed matter ; physics, mathematical |
| 类目[WOS] | physics, applied ; physics, condensed matter ; physics, mathematical |
| 研究领域[WOS] | physics |
| 关键词[WOS] | mineral composite-materials ; rare-earth ; oxidation catalysts ; heat-treatment ; rays |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000364504900002 |
| 公开日期 | 2015-12-22 |
| 源URL | [http://ir.opt.ac.cn/handle/181661/27494]  |
| 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,Hu, Weijie,et al. Effect of nano-sized cerium zirconium oxide solid solution on far-infrared emission properties of tourmaline powders[J]. modern physics letters b,2015,29(30). |
| APA | Guo, Bin,Yang, Liqing,Hu, Weijie,Li, Wenlong,&Wang, Haojing.(2015).Effect of nano-sized cerium zirconium oxide solid solution on far-infrared emission properties of tourmaline powders.modern physics letters b,29(30). |
| MLA | Guo, Bin,et al."Effect of nano-sized cerium zirconium oxide solid solution on far-infrared emission properties of tourmaline powders".modern physics letters b 29.30(2015). |
入库方式： OAI收割
来源：西安光学精密机械研究所
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