摘要
以分析纯的仲钼酸铵为钼源,分析纯的硝酸为沉淀剂,在酸性反应体系中通过水热法成功地合成了径向尺寸小于500 nm的MoO_3亚微米带。利用X射线衍射(XRD)、热场发射扫描电子显微镜(SEM)和紫外可见光的吸收光谱仪(UV-VIS)对试样进行表征,研究结果表明:在水热法体系中不同反应温度下合成试样的物相都是MoO_3,随着水热反应温度的升高,合成MoO_3的长径比增加。同时,UV-VIS分析可得,随着水热法合成MoO_3长径比的增大,获得的MoO_3的光吸收能力逐渐是增加的。因此,MoO_3长径比的增加是有利于它们光吸收能力的增强。特别是MoO_3亚微米带具有良好的光吸收能力。
Less than 500 nm molybdenum trioxide （MoO3 ） submicrobehs in the radial direction were successfully and effectively obtained with analytically pure ammonium heptamolybdate as the molybdenum source and analytically pure nitric acid as the precipitant via the simple hydrothermal method. The phases, the morphologies and the optical absorption ability of as-prepared samples under the hydrothermal conditions were characterized and analyzed with XRD, SEM and UV-VIS, respectively. XRD analysis showed that the phase of the samples made under the diffferremt conditions was MoO3. SEM confirmed that the length-to-diameter ratio of MoO3 added when the hydrothermal reaction temperature rose. The results of UV-VIS analysis showed that the optical absorption ability of MoO3 increased with the enhancement of its aspect ratio. Therefore, the increasement of the slenderness ratio of MoO3 was in favor of the enlargement of their optical absorption capacity. Especially, MoO3 submicrobehs had the outstanding optical absorption property.
出处
《硅酸盐通报》
CAS
CSCD
北大核心
2014年第6期1535-1538,共4页
Bulletin of the Chinese Ceramic Society
基金
Collegiate Natural Science Fund of Jiangsu(11KJB450001)
Open Fund Project of Key Laboratory for Optoelectronics of Jiangsu
Science and Technology Project of Suqian(Z201201)
关键词
仲钼酸铵
水热法
MOO3
亚微米带
光吸收特性
ammonium paramolybdate
hydrothermal method
MoO3 submicrobelts
optical absorption property
