Transcript J. Flake, Materials Projects - LSU Department of Chemical

John Flake, Semiconductors / Electronic Materials
• Surface Functionalization of Silicon
Nanowires, BOR-RCS $103k/3yrs
• Significance: Silicon nanowires are
functionalized for biological interfaces,
sensors, or for Li-ion battery applications.
• 3D Interconnects, ATMI Inc. $450k/3yr.
• Significance: Develop novel
electrochemical approaches to forming
deep through silicon vias.
• Other Areas of Research:
• TiO2 photocatalysts,
photoelectrochemical reduction of
CO3, Dept. of Energy EFERC
• Li-ion battery materials, DoD
Silicon nanowires, SEM
9 Die Stack with Through Silicon Vias
Francisco R. Hung, Molecular Modeling in Materials Design
Ion permeable separator
Ionic Liquids in Nanoporous Carbons: when confined,
how are the ionic liquids affected by the properties (pore
size, pore morphology, surface chemistry) of the carbons?
Current
collector
Significance: optimize design of (1) electrodes for electrochemical +
double layer capacitors (EDLCs) for hybrid vehicles; and (2)
nanoporous semiconductors (e.g., TiO2) for dye-sensitized solar
cells (DSSCs) for using solar energy (with John Flake)
Organization of Carbon Nanotubes Using Liquid Crystals:
investigate the use of liquid crystals (LCs) to manipulate and
control the orientation of carbon nanotubes (CNTs)
–
Porous
carbon
electrode
Electrolyte
ions
Electric double-layer
Simplified electric
circuit
C
C
capacitor
dl,+
dl,–
Electrolyte
Significance: high-quality dispersions of oriented CNTs in LCs
have applications in displays, nanoscale electronics, optical
sensors, and in the development of composites with unique
mechanical, thermal and/or electronic properties.
Mediator
Conducting Porous TiO2
glass
+ dye
(b)
Wall patterned arrays that might be used to align CNTs dispersed in a LC
Cathode
Dye-sensitized solar
cell
Greg Griffin, Materials Processing
Aerosol synthesis methods
Significance: (1) Aluminum nitride powder - thermal heat sink,
ceramic armor; (2) Sol-gel / colloidal chemistry – mesoporous
TiO2 - photocatalytic air, water purification.
Chemical vapor deposition / Atomic layer deposition
Significance: copper thin films – microelectronic circuitry (CVD)
palladium nanoparticles - heterogeneous catalysis (ALD)
Future plans
Nanostructured catalyst preparation
Significance: CO2 conversion; desulfurization;
photocatalytic decontamination
Microelectronic devices
Metallization circuitry; solar photovoltaic cells
Environmental nanotechnology
- education proposal
-
Kerry Dooley, Catalytic Materials
Monolithic Materials for Oscillating Reactors (C. Knopf)
Significance: Enhanced observed rates in catalysis of edible oil
hydrogenation, oxidative desulfurization.
Figure – Synthetic
Evolution of Four
Generations of HighTemperature (600ºC)
Oxide Desulfurization
Sorbents
Mixed Rare Earth Oxides for Nanocombustion and
Desulfurization (S. Acharya)
Significance: Enhanced thrust for fighter aircraft; desulfurization
and tar removal from coal and biogasifier effluents.
Adsorbed
Hydrodeoxygenation/
Decarboxylation of Fatty Acids
and Rosin Acids
Significance: Biorefining the acids
fraction of pyrolysis liquids and tar
extracts to higher value fuels,
chemicals
Desorbed, inert gas
Ce/La/Mn/Al
Ce/La/Tb/Al
Ce/La/Gd/Al
Ce/La/Zr
Ce/La
Mn/Al
Al/Zeo
0
20
40
60
80
100
umol S/g
120
140
160