摘要
通过水热法制备不同阳离子类型的水滑石型M^2+-M^3+-LDHs材料,研究不同M^2+(Ni^2+,Co^2+,Mn^2+)、M^3+(Cr^3+,Fe^3+)阳离子对M^2+-M^3+-LDHs物相结构和可见光-近红外反射光谱的影响。结果表明:样品的晶体结构与层板中阳离子类型有关,并影响LDHs样品的近红外光谱特性;改变有色阳离子的类型和相对含量可以调控水滑石型材料的光谱特性,掺杂Cr^3+的Mg-Al-LDHs样品具有与天然植物相似的光谱特征;采用二元掺杂改性可以实现对Mg-Al-Cr-LDHs样品光谱特性的进一步微调。
The hydrotalcite(LDHs)materials with different kinds of M^2+and M^3+were prepared by hydrothermal method,and the crystal structure and spectral characteristics of the samples were characterized by X-ray diffraction and UV-VIS-NIR spectrophotometer.The results show that the crystal structure of the samples is related to the type of cations,and affects the NIR spectra of LDHs samples.The introduction of colored cations helps to regulate the spectral curves of hydrotalcite materials.The samples of Mg-Al-LDHs doped with Cr^3+has the similar spectral characteristics with natural green plants.Furthermore,fine spectral tuning of Mg-Al-Cr-LDHs samples can be achieved by using binary co-doping.
作者
袁乐
卿小龙
张萍
梁杰翔
黄刚
YUAN Le;QING Xiaolong;ZHANG Ping;LIANG Jiexiang;HUANG Gang(School of Material Science and Engineering,Xihua University,Chengdu 610039 China;Sichuan Wisepride Industry Co.,Ltd.,Chengdu 611731 China)
出处
《西华大学学报（自然科学版）》
CAS
2020年第3期7-13,共7页
Journal of Xihua University:Natural Science Edition
基金
国家自然科学基金面上项目(51972276)
三亚市专项科研试制项目(2014KS12)。
