Functional Materials Laboratory, Dept. of Molecular Science & Technology, Ajou University

김 지 만아주대학교응용화학전공기능성물질연구실

http://www.ajou.ac.kr/~fml

Mesoporous 물질의제조와활용Mesoporous 물질의제조와활용

열분해연구회 2003. 4. 4

Functional Materials Laboratory, Dept. of Molecular Science & Technology, Ajou University

Outline Outline Mesoporous Materials ?

Application Areas

Mesoporous Materials ?

Application Areas

Functional Materials Laboratory, Dept. of Molecular Science & Technology, Ajou University

Porous Materials in NanoworldPorous Materials in NanoworldMicroporous Mesoporous Macroporous

Pore size / A5 10 50 100 500 1000

Mesoporous Materials

Zeolites

Functional Materials Laboratory, Dept. of Molecular Science & Technology, Ajou University

8 nm PoreSilica framework

Controllable and large pore size in the range of 2 ~ 30 nm

High surface area ~ 1000 m2/g

MCM-, SBA-, MSU-, KIT-series

Controllable and large pore size in the range of 2 ~ 30 nm

High surface area ~ 1000 m2/g

MCM-, SBA-, MSU-, KIT-series

Mesoporous MaterialsMesoporous Materials

SensorSensorDeviceDevice

AdsorbentAdsorbentCatalystCatalyst

Functional Materials Laboratory, Dept. of Molecular Science & Technology, Ajou University

Templates for Porous MaterialsTemplates for Porous MaterialsSurfactantSurfactant

HydrophilicHydrophilichydrophobichydrophobic

Micelle

MesoporousMesoporous

Polymer Bead Polymer Bead

MacroporousMacroporous

MoleculesMolecules

Microporous

Functional Materials Laboratory, Dept. of Molecular Science & Technology, Ajou University

Surfactant in Water Surfactant in Water

H1

V1

L

Liquid phase + crystal

H1: hexagonal

V1: cubic Ia3d

L: lamellar

Tem

pera

ture

, oC

HydrophilicHydrophilic

hydrophobichydrophobic

MCM-41

MCM-48

MCM-50

Functional Materials Laboratory, Dept. of Molecular Science & Technology, Ajou University

surfactantmicelle micellar rod

hexagonal array

silicate

Remove Template

MesoporousMaterials

Nature, 1992, 359, 710

Mesoporous MaterialsMesoporous MaterialsVariation of synthesis parameters Reactant concentration Synthesis temperature pH of the mixture Nature of surfactant, etc.

Variation of synthesis parameters Reactant concentration Synthesis temperature pH of the mixture Nature of surfactant, etc.

Pore Structure, Morphology & Framework

Pore Structure, Morphology & Framework

Functional Materials Laboratory, Dept. of Molecular Science & Technology, Ajou University

General Synthesis SchemeGeneral Synthesis Scheme

Dissolution of templates

Addition of inorganic sources

Aging & hydrothermal

heating

PrecipitateFiltration & calcinationMesoporous

material

Functional Materials Laboratory, Dept. of Molecular Science & Technology, Ajou University

Application ExamplesApplication Examples

Functional Materials Laboratory, Dept. of Molecular Science & Technology, Ajou University

Stud. Surf. Sci. Catal., 1998, 117, 65

Possible Application AreasPossible Application Areas

SensorSensor

ApplicationsApplications

DeviceDevice

Memory MediaMemory Media

MembraneMembrane

Gas StorageGas Storage

AdsorbentAdsorbent

CatalystCatalyst

Functional Materials Laboratory, Dept. of Molecular Science & Technology, Ajou University

Grafting Metallocene Complexes onto Mesoporous Silica

Grafting Metallocene Complexes onto Mesoporous Silica

Nature, 1995, 378, 159

Direct grafting of an organometallic complex onto the inner walls of MCM-41 generates a heterogeneous catalyst with a large concentration of accessible, well spaced and structurally well defined active sites.Attachment of a titanocene-derived catalyst precursor to the pore walls of MCM-41 produce a catalyst for the epoxidation of cyclohexene and more bulky cyclic alkenes.

Direct grafting of an organometallic complex onto the inner walls of MCM-41 generates a heterogeneous catalyst with a large concentration of accessible, well spaced and structurally well defined active sites.Attachment of a titanocene-derived catalyst precursor to the pore walls of MCM-41 produce a catalyst for the epoxidation of cyclohexene and more bulky cyclic alkenes.

Functional Materials Laboratory, Dept. of Molecular Science & Technology, Ajou University

Nanoscale Polymerization Reactors for Polymer Fibers

Nanoscale Polymerization Reactors for Polymer Fibers

Science, 1999, 285, 2113

Functional Materials Laboratory, Dept. of Molecular Science & Technology, Ajou University

Metal Nanowire Fabrication Metal Nanowire Fabrication

R. Ryoo et al., J. Phys. Chem., 1996, 100, 17718J. M. Kim et al., Chem. Mater., 2000, 12, 2068

Ag Pt

Au

Functional Materials Laboratory, Dept. of Molecular Science & Technology, Ajou University

Conducting Polyaniline Filaments in Mesoporous Channel

Conducting Polyaniline Filaments in Mesoporous Channel

Science, 1994, 264, 1757

This demonstration of conjugated polymers with mobile charge carriers in nanometer channels represents a step toward the design of nanometer electronic device.

Functional Materials Laboratory, Dept. of Molecular Science & Technology, Ajou University

Science, 1997, 276, 923.

One end group of the functionalized monolayers is covalently bonded to the silica surface and the other end group can be used to bind heavy metals or other functional molecules. The materials are extremely efficient in removing mercury and other heavy metals from both aqueous and nonaqueous waste streams.

One end group of the functionalized monolayers is covalently bonded to the silica surface and the other end group can be used to bind heavy metals or other functional molecules. The materials are extremely efficient in removing mercury and other heavy metals from both aqueous and nonaqueous waste streams.

Functionalized Monolayer for Environmental and Industrial Applications

Functionalized Monolayer for Environmental and Industrial Applications

Functional Materials Laboratory, Dept. of Molecular Science & Technology, Ajou University

SBA-15 with different channel sizescan be used for protein separationwhere both size exclusion and ion-exchange chromatography techniquesare employed simultaneously.

SBA-15 with different channel sizescan be used for protein separationwhere both size exclusion and ion-exchange chromatography techniquesare employed simultaneously.

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SBA-15

Si Si Si

O O O

Si

NH2

Protein SeparationProtein Separation

J. Am. Chem. Soc., 1999, 121, 9897standardsolution

14 kD14 kD44 kD

14 kD44 kD77 kD

conalbimin

160Å

59Å

Functional Materials Laboratory, Dept. of Molecular Science & Technology, Ajou University

Low-loss waveguides Homogenous dye distribution

Mesostructured Waveguides Patterned by Soft LithographyMesostructured Waveguides Patterned by Soft Lithography

These highly processible, self-assembling mesostructured

host media and claddings may have potential for the fabrication of integrated optical circuits.

Science, 2000, 287, 465