TY - JOUR
T1 - Synthesis of Mesoporous Transition-Metal Phosphates by Polymeric Micelle Assembly
AU - Bastakoti, Bishnu P
AU - Li, Yunqi
AU - Guragain, Sudhina
AU - Pramanik, Malay
AU - Alshehri, Saad M.
AU - Ahamad, Tansir
AU - Liu, Zongwen
AU - Yamauchi, Yusuke
PY - 2016/5/23
Y1 - 2016/5/23
N2 - Mesoporous iron phosphate (FePO4) was synthesized through assembly of polymeric micelles made of asymmetric triblock co-polymer (polystyrene-b-poly-2-vinylpyridine-b-ethylene oxide; PS-PVP-PEO). The phosphoric acid solution stimulates the formation of micelles with core-shell-corona architecture. The negatively charged PO43- ions dissolved in the solution strongly interact with the positively charged PVP+ units through an electrostatic attraction. Also, the presence of PO43- ions realizes a bridge between the micelle surface and the metal ions. The removal of polymeric template forms the robust framework of iron phosphate with 30 nm pore diameter and 15 nm wall thickness. Our method is applicable to other mesoporous metal phosphates by changing metal sources. The obtained materials were fully characterized by scanning electron microscope (SEM), transmission electron microscope (TEM), N2 adsorption-desorption, Raman spectroscope, and other techniques.
AB - Mesoporous iron phosphate (FePO4) was synthesized through assembly of polymeric micelles made of asymmetric triblock co-polymer (polystyrene-b-poly-2-vinylpyridine-b-ethylene oxide; PS-PVP-PEO). The phosphoric acid solution stimulates the formation of micelles with core-shell-corona architecture. The negatively charged PO43- ions dissolved in the solution strongly interact with the positively charged PVP+ units through an electrostatic attraction. Also, the presence of PO43- ions realizes a bridge between the micelle surface and the metal ions. The removal of polymeric template forms the robust framework of iron phosphate with 30 nm pore diameter and 15 nm wall thickness. Our method is applicable to other mesoporous metal phosphates by changing metal sources. The obtained materials were fully characterized by scanning electron microscope (SEM), transmission electron microscope (TEM), N2 adsorption-desorption, Raman spectroscope, and other techniques.
KW - iron
KW - mesoporous materials
KW - metal phosphates
KW - micelles
KW - triblock co-polymers
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U2 - 10.1002/chem.201600435
DO - 10.1002/chem.201600435
M3 - Article
SN - 0947-6539
VL - 22
SP - 7463
EP - 7467
JO - Chemistry - A European Journal
JF - Chemistry - A European Journal
IS - 22
ER -