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Facile Preparation of Ammonium Molybdophosphate/Al‐MCM‐41 Composite Material from Natural Clay and Its Use in Cesium Ion Adsorption
Author(s) -
Sun Chunyan,
Zhang Feng,
Wang Xiao,
Cheng Fangqin
Publication year - 2015
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.201500114
Subject(s) - chemistry , adsorption , aluminosilicate , mesoporous material , fourier transform infrared spectroscopy , geopolymer , inorganic chemistry , calcination , nuclear chemistry , chemical engineering , organic chemistry , catalysis , engineering , fly ash
Abstract Ordered hexagonal mesoporous aluminosilicate matrix (Al‐MCM‐41) with incorporated ammonium molybdophosphate (AMP) was successfully synthesized by a one‐pot synthesis method with natural clay from low‐grade potash ores of Qinghai salt lake as the silica and aluminum source. We introduced a modified “liquid‐phase transport” step, which allowed the use of impure natural clay as a starting material to directly produce pure product without sedimentation pretreatment. The resultant product was characterized by X‐ray fluorescence (XRF) spectroscopy, FTIR spectroscopy, XRD, TEM, 27 Al and 31 P magic‐angle spinning (MAS) NMR spectroscopy, and N 2 adsorption/desorption, which indicated that the AMP was immobilized in the mesoporous structure of Al‐MCM‐41. The adsorption capacity of the final product for the removal of cesium ions in solution was also investigated. The results suggested that salt lake clay is a promising low‐cost precursor for the production of mesoporous aluminosilicate supports through one‐pot syntheses, and the final composite material is effective for the adsorption of cesium ions from solutions containing other alkali metal ions.