title: Synthesis of Mesoporous Transition-Metal Phosphates by Polymeric Micelle Assembly.
abstract: 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 PO4 (3-) ions dissolved in the solution strongly interact with the positively charged PVP(+) units through an electrostatic attraction. Also, the presence of PO4 (3-) 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.
authors.affiliation: World Premier International (WPI), Research Center for Materials Nanoarchitectonics (MANA), National Institute for Materials Science (NIMS), 1-1 Namiki, Tsukuba, Ibaraki, 305-0044, Japan.|School of Chemical and Biomolecular Engineering, The University of Sydney, Sydney, NSW 2006, Australia.
authors.forename: Bishnu Prasad
authors.initials: BP
authors.lastname: Bastakoti
authors.affiliation: World Premier International (WPI), Research Center for Materials Nanoarchitectonics (MANA), National Institute for Materials Science (NIMS), 1-1 Namiki, Tsukuba, Ibaraki, 305-0044, Japan.|Faculty of Science and Engineering, Waseda University, 3-4-1 Okubo, Shinjuku, Tokyo, 169-8555, Japan.
authors.forename: Yunqi
authors.initials: Y
authors.lastname: Li
authors.affiliation: World Premier International (WPI), Research Center for Materials Nanoarchitectonics (MANA), National Institute for Materials Science (NIMS), 1-1 Namiki, Tsukuba, Ibaraki, 305-0044, Japan.
authors.forename: Sudhina
authors.initials: S
authors.lastname: Guragain
authors.affiliation: World Premier International (WPI), Research Center for Materials Nanoarchitectonics (MANA), National Institute for Materials Science (NIMS), 1-1 Namiki, Tsukuba, Ibaraki, 305-0044, Japan.
authors.forename: Malay
authors.initials: M
authors.lastname: Pramanik
authors.affiliation: Department of Chemistry, College of Science, King Saud University, Riyadh, 11451, Saudi Arabia. alshehri@ksu.edu.sa.
authors.forename: Saad M
authors.initials: SM
authors.lastname: Alshehri
authors.affiliation: Department of Chemistry, College of Science, King Saud University, Riyadh, 11451, Saudi Arabia.
authors.forename: Tansir
authors.initials: T
authors.lastname: Ahamad
authors.affiliation: School of Chemical and Biomolecular Engineering, The University of Sydney, Sydney, NSW 2006, Australia.
authors.forename: Zongwen
authors.initials: Z
authors.lastname: Liu
authors.affiliation: World Premier International (WPI), Research Center for Materials Nanoarchitectonics (MANA), National Institute for Materials Science (NIMS), 1-1 Namiki, Tsukuba, Ibaraki, 305-0044, Japan. yamauchi.yusuke@nims.go.jp.|Faculty of Science and Engineering, Waseda University, 3-4-1 Okubo, Shinjuku, Tokyo, 169-8555, Japan. yamauchi.yusuke@nims.go.jp.|Department of Chemistry, College of Science, King Saud University, Riyadh, 11451, Saudi Arabia. yamauchi.yusuke@nims.go.jp.
authors.forename: Yusuke
authors.initials: Y
authors.lastname: Yamauchi
keywords: iron; mesoporous materials; metal phosphates; micelles; triblock co-polymers