Keith Johnston Research Group (5.414)Nanotechnology/Colloid Science/Interfaces

kpj@che.utexas.eduNanotechnology for Energy: Fundamentals and Applications

– Nanotechnology for CO2 Sequestration and EOR(Bryant, Huh, Hirosaki, Milner, Nguyen, Prodanovic)

• Nanoparticle adsorption and transport in porous med.• Electromagnetic imaging• Emulsions/foams for mobility control

– Nanomaterials for electrocatalysis(Stevenson)

• Catalysis- fuel cells, batteries• CO2 reduction to fuels

Pharmaceutical Imaging and Therapeutics– Magnetic/optical/therapeutic nanoparticles -cancer and atherosclerosis(Sokolov, Milner, Feldman (UTHSCSA), Emelianov, Zhang)– Protein drug delivery (subcutaneous delivery)(Jennifer Maynard, Tom Truskett)

Potent and Biodegradable Nanoclusters for Imaging/Therapy(Inorganic: Sokolov, Emelianov, Milner Proteins: Maynard, Truskett)

UT Southwestern, UTHSCSA, M.D. Anderson

Sub-5 nm gold particles

Clustering of gold nanoparticles

mediated by weakly adsorbing polymer

PLA-b-PEG-b-PLA

Gold nanoparticle bound together by

polymerSub-5 nm gold particles

Clustering of gold nanoparticles

mediated by weakly adsorbing polymer

PLA-b-PEG-b-PLA

Gold nanoparticle bound together by

polymer

Capsid dsRNA virus, PNAS, 106 (09)

Bryant, Huh, Nguyen (Petroleum, Geosyst.)Milner (BME), Bielawski (polymer org. chemist)

Polymer coatings: interfacial properties

CO2 sequestration and EORImage reservoirsElectrocatalysis: interactions with support

Nanoparticles at interfaces in porous media: nanomaterials synthesis, colloid/interface science with polymer science

q qwater

CO2

CO2

water

CO2

water

DOE Frontiers of Subsurface Energy Security (UT-Sandia)

v dWv dWS te ric

S te ric

Stable protein dispersions for protein drug delivery

4

0.00 100.00 200.00 300.00 400.000.00

20.00

40.00

60.00

80.00

100.00

120.00 mAb 220 mg/mLmAb 200 mg/mLmAb 150 mg/mL

0 0.1 0.2 0.3 0.4 0.5 0.60

0.05

0.1

0.15

0.2

0.25

0.3

0.35 20.4280683564.6581768120.0765141183.2172019239.1922003312.2682155380.0618024444.2031469

φC

φP

GEL PHASE

Colloid science

Protein processing/characteriz.

Fundamental protein interactions/stability

Nanomaterials for electrocatalysis (Fuel cells/rechargeable batteries, CO2 reduction) (Stevenson)

Amorphous alloy shell over corrugated crystalline alloy coreLow coordination sites and strain from wetting for high activity

(100)

(111)

0 400 800 1200 16000.0

0.2

0.4

0.6

0.8

1.0

1.2

Pot

entia

l [V

]

Current Density [mA/cm2]

0.0

0.1

0.2

0.3

0.4

0.5 Pt Pd

3Pt

2

Pow

er Density [W

/cm2]

O2 + 4H+ +4e- = 2H2O

Destination of PhD Students• Dixon S. Dakota

S. Mines • Gupta Auburn• Balbuena Texas A + M• Meredith Ga. Tech.• Yates U. Rochester• Da Rocha Wayne State U.• Lee U. S. California• Ziegler U. Florida• Lu Nat. Univ.

Singapore

• Young Dow • Psathas Schering-Plough• Rogers Dow • Sirard Lam Research• Shah Pfizer• Pham Sematech• Chen Abbott• DicksonExxon-Mobil• Smith Exxon-Mobil• Overhoff Schering-Plough• Engstrom Bristol-Meyers-

Squibb• Matteucci Dow• Gupta Exxon-Mobil• Tam Bristol-Meyers-

Squibb• Patel Lam Research• Ma Dupont• Miller Medimmune