摘要
以γ－氨丙基修饰介孔分子筛ＭＣＭ－４１内孔壁，将引入的γ－氨丙基与金属配位离子［Ｆｅ（ｂｉｐｙ）２］３＋通过配位键首次合成了金属配位化合物修饰的ＭＣＭ－４１（ＭＣＭ－ａｐ－Ｆｅ（ｂｉｐｙ）２）．通过ＸＲＤ，７７Ｋ氮气吸附－脱附曲线，固体ＵＶ－ｖｉｓ漫反射光谱和循环伏安曲线表征了复合物ＭＣＭ－ａｐ－Ｆｅ（ｂｉｐｙ）２。由于［Ｆｅ（ｂｉｐｙ）２］３＋的引入，使 ＭＣＭ－ａｐ－Ｆｅ（ｂｉｐｙ）２的结晶度降低， ＢＥＴ比表面积、孔容和最可几孔径急剧下降．γ－氨丙基与Ｆｅ３＋的配位而使其ＵＶ－ｖｉｓ漫反射吸收光谱与ＭＣＭ－Ｆｅ（ｂｉｐｙ）２不同；循环伏安特性曲线表明ＭＣＭ－ａｐ－Ｆｅ（ｂｉｐｙ）２在电化学上比浸渍法制备的ＭＣＭ－Ｆｅ（ｂｉｐｙ）２稳定．
The modification of the inner surface walls of mesoporous MCM-41 molecular sieves with γ-aminopropyl yielded amine groups functional MCM-41. Iron(Ⅲ) 2'2-bipyridine complex grafted onto the functional MCM-41 via the coordination of iron ion with grafted amine group. The complex functionalized MCM-41 was characterized by XRD, N2 sorption at 77K, and solid state diffuse reflectance UV-vis spectroscopy as well as cyclic voltammetry (CV). It has low crystalline and the BET surface areas, pore volume and main pore diameters decreased shapely compared to MCM-41 because of the introduction of γ-aminopropyl and [Fe(bipy)2]3+. Furthermore, the spectra of UV-vis and CV studies suggested the nature and electroactivity of iron ion complex functionalized MCM-41 differed from iron ion complex impregnated MCM-41.
出处
《无机材料学报》
SCIE
EI
CAS
CSCD
北大核心
2000年第6期1015-1020,共6页
Journal of Inorganic Materials
关键词
介孔分子筛
MCM-41
铁配合物
修饰
合成
表征
MCM-41 molecular sieves
γ-aminopropyl modified MCM-41
metal ion complex functionalized MCM
