Hollow-structured hematite particles derived from layered iron (hydro)oxyhydroxide?surfactant compositesElectronic supplementary information (ESI) available: images of the hollow-structured hematite particles synthesized at 140 C for 2, 4, 8 and 24 h. See http://www.rsc.org/suppdata/jm/b3/b305165j/

Hollow-structured hematite particles (HSHPs) with porosity in the nanometer size range have been successfully prepared using a one-step solvothermal process. A detailed time course study revealed that these HSHPs formed through a coupled dissolution and surface recrystallization process, in which the preformed hematite nanoparticles firstly oriented-aggregated into spindle-like particles with amorphous cores, then recrystallization occurred on the surfaces of the particles and was supplied by dissolution of the amorphous cores, which led to the final HSHPs. The as-prepared HSHPs performed remarkable catalytic activity in the polymerization reaction of benzyl chloride. These HSHPs might not only lead to novel technological applications in areas ranging from medicine to materials science, but also would shed more light on the attachment growth process of inorganic nanostructures with hollow interiors.

[1]  Younan Xia,et al.  Metal Nanostructures with Hollow Interiors , 2003 .

[2]  C. Mou,et al.  Biomimetic Formation of Porous Single‐Crystalline CaCO3 via Nanocrystal Aggregation , 2003 .

[3]  K. Kandori,et al.  Preparation and characterization of disk-shaped hematite particles by a forced hydrolysis reaction in the presence of polyvinyl alcohol , 2002 .

[4]  L. Qi,et al.  Synthesis of Submicrometer‐Sized Hollow Silver Spheres in Mixed Polymer–Surfactant Solutions , 2002 .

[5]  A. Gedanken,et al.  Acoustic cavitation leading to the morphosynthesis of mesoporous silica vesicles , 2002 .

[6]  K. Kandori,et al.  Preparation of Nanoporous Micrometer-Scale Hematite Particles by a Forced Hydrolysis Reaction in the Presence of Polyethylene Glycol , 2002 .

[7]  L. Qi,et al.  Biomimetic Morphogenesis of Calcium Carbonate in Mixed Solutions of Surfactants and Double‐Hydrophilic Block Copolymers , 2002 .

[8]  D. Zhao,et al.  Synthesis of Siliceous Hollow Spheres with Ultra Large Mesopore Wall Structures by Reverse Emulsion Templating , 2002 .

[9]  C. Serna,et al.  Single‐Step Nanoengineering of Silica Coated Maghemite Hollow Spheres with Tunable Magnetic Properties , 2001 .

[10]  S. Mann,et al.  Interfacial synthesis of hollow microspheres of mesostructured silica. , 2001, Chemical communications.

[11]  O. Terasaki,et al.  Polystyrene bead-assisted self-assembly of microstructured silica hollow spheres in highly alkaline media. , 2001, Journal of the American Chemical Society.

[12]  F. Caruso,et al.  Hollow Titania Spheres from Layered Precursor Deposition on Sacrificial Colloidal Core Particles , 2001 .

[13]  Younan Xia,et al.  Synthesis and Characterization of Mesoscopic Hollow Spheres of Ceramic Materials with Functionalized Interior Surfaces , 2001 .

[14]  D. Pine,et al.  Photonic Crystals from Emulsion Templates , 2001 .

[15]  Frank Caruso,et al.  Multilayered Titania, Silica, and Laponite Nanoparticle Coatings on Polystyrene Colloidal Templates and Resulting Inorganic Hollow Spheres , 2001 .

[16]  T. Sugimoto.  Fine Particles : Synthesis, Characterization, and Mechanisms of Growth , 2000 .

[17]  F. Caruso,et al.  Hierarchical assembly of zeolite nanoparticles into ordered macroporous monoliths using core-shell building blocks. , 2000 .

[18]  J. Banfield,et al.  Aggregation-based crystal growth and microstructure development in natural iron oxyhydroxide biomineralization products. , 2000, Science.

[19]  F. Caruso,et al.  Production of Hollow Microspheres from Nanostructured Composite Particles , 1999 .

[20]  S. Mann,et al.  MORPHOSYNTHESIS OF CALCIUM CARBONATE (VATERITE) MICROSPONGES , 1999 .

[21]  T. Sasaki,et al.  Titanium Dioxide Hollow Microspheres with an Extremely Thin Shell , 1998 .

[22]  T. Pinnavaia,et al.  Ultrastable mesostructured silica vesicles , 1998, Science.

[23]  Caruso,et al.  Nanoengineering of inorganic and hybrid hollow spheres by colloidal templating , 1998, Science.

[24]  A. Imhof,et al.  Ordered macroporous materials by emulsion templating , 1997, Nature.

[25]  Sidney R. Cohen,et al.  Hollow nanoparticles of WS2 as potential solid-state lubricants , 1997, Nature.

[26]  Geoffrey A. Ozin,et al.  Morphogenesis of shapes and surface patterns in mesoporous silica , 1997, Nature.

[27]  Q. Huo,et al.  Oil-Water Interface Templating of Mesoporous Macroscale Structures , 1996, Science.

[28]  Stephen Mann,et al.  Synthesis of inorganic materials with complex form , 1996, Nature.

[29]  S. Mann,et al.  Fabrication of hollow porous shells of calcium carbonate from self-organizing media , 1995, Nature.

[30]  M. Khan,et al.  Formation mechanism of monodisperse peanut-type α-Fe2O3 particles from condensed ferric hydroxide gel , 1993 .

[31]  G. Messing,et al.  Synthesis of cellular inorganic materials by foaming sol-gels , 1990 .

[32]  C. Serna,et al.  Optical properties of α-Fe2O3 microcrystals in the infrared , 1987 .

[33]  T. Jin,et al.  Structure of acid sites on sulfur-promoted iron oxide , 1986 .

[34]  HinoMakoto,et al.  IRON OXIDE AS AN EFFECTIVE CATALYST FOR THE POLYCONDENSATION OF BENZYL CHLORIDE, THE FORMATION OF PARA-SUBSTITUTED POLYBENZYL , 1979 .

[35]  R. Nesper,et al.  An iron polyolate complex as a precursor for the controlled synthesis of monodispersed iron oxide colloids , 2002 .

[36]  F. Caruso,et al.  Magnetic Nanocomposite Particles and Hollow Spheres Constructed by a Sequential Layering Approach , 2001 .

[37]  J. Hargreaves,et al.  Sulfated metal oxide catalysts , 1999 .

[38]  P. Behrens,et al.  Novel synthetic pathways to layered iron(hydro)oxyhydroxide–surfactant composites , 1998 .

[39]  A. Gedanken,et al.  Preparation of amorphous Fe2O3 powder with different particle sizes , 1997 .

[40]  K. Arata,et al.  High catalytic activity of calcined iron sulphates for the polycondensation of benzyl chloride , 1978 .

[41]  K. Nakamoto.  Infrared and Raman Spectra of Inorganic and Coordination Compounds , 1978 .