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Accelerated Syntheses of Porous Isostructural Lanthanide–Benzenetricarboxylates (Ln–BTC) Under Ultrasound at Room Temperature
Author(s) -
Khan Nazmul Abedin,
Haque Md. Masuqul,
Jhung Sung Hwa
Publication year - 2010
Publication title -
european journal of inorganic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.667
H-Index - 136
eISSN - 1099-0682
pISSN - 1434-1948
DOI - 10.1002/ejic.201000541
Subject(s) - isostructural , lanthanide , chemistry , luminescence , microporous material , tetragonal crystal system , nucleation , porosity , metal organic framework , crystallography , phase (matter) , scanning electron microscope , chemical engineering , crystal structure , ion , materials science , organic chemistry , adsorption , optoelectronics , engineering , composite material
Porous isostructural [Ln(BTC)(H 2 O) · 4.3H 2 O], or Ln–BTC (Ln: Ce, Tb, and Y; BTC stands for 1,3,5‐benzenetricarboxylate), with a tetragonal structure has been synthesized by ultrasonic irradiation at room temperature. Under ultrasound, the syntheses were quickly accelerated to obtain the fully crystallized phase in only minutes. The particle size can be considerably decreased by this method. On the basis of XRD, field‐emission scanning electron microscopy (FE‐SEM), and surface area analyses, it can be understood that the Ln–BTCs are homogeneous in phase, isostructural, and microporous. The synthesis rates are r Ce–BTC > r Tb–BTC > r Y–BTC for both in the nucleation and crystal‐growth stages, thereby illustrating the importance of the lability of the metal ions in the synthesis of the metal‐organic framework (MOF) materials. The Tb–BTC shows luminescence properties, a characteristic property of Tb 3+ (green‐light emission), in the range of 470–630 nm at room temperature. It is believed that these lanthanide MOFs with micropores and/or luminescent properties should be proven to be multifunctional materials on further investigations.