Papers – Page 5 – TechConnect Briefs

Nanoparticles Formed by Complexation of Poly-gamma-glutamic Acid with Lead Ions

Bodnar M., Kjoniksen A-L, Hartmann J.F., Daróczi L., Nystrom B., Borbely J., University of Debrecen, HU

Recently, reduction of water consumption by industry has been an important challenge. Enhanced ultrafiltration with polymers is a feasible method to remove metal ions from diluted wastewater streams. Biomacromolecules, biodegradable polymers as biomaterials have an [...]

Synthesis of visible light active nanocrystalline bismuth oxide based photocatalysts

Akurati K.K., Vital A., Reifler F., Ritter A., Graule T., Swiss federal laboratories for materials science & technology, EMPA, CH

Photocatalysis phenomenon has attracted considerable interest in recent years because of its usage in water purification, environmental cleaning, solar energy conversion and generation of alternative energy resources. To date, TiO2 has undoubtedly proven to be [...]

Microbial fuel cell

Willert-Porada M., Lorenz K., Freitag R., Jerome V., Peiffer S., University of Bayreuth, DE

Polymer electrolyte fuel cells, PE-FC, use hydrogen or methanol as fuel. Water soluble organic compounds, like starch, glucose, acetates, can not serve as fuel because of limited catalytic activity of common metal catalysts. Opposite to [...]

Block Copolymer Directed Nanocomposites for Fuel Cell Applications

Dermis T., Mayavan S., Dutta N.K., Choudhury N.R., Holdcroft S., University of South Australia, AU

Block copolymers [1,2] and ionomers comprising fluoro/non-fluoro segments have significant potential applications in the field of fuel cell. However, they are very difficult to synthesize; because fluoro monomers are not amenable to living ionic polymerization [...]

Hydroxyapatite-imidazole-polymer composite films as a proton conductor under no humidified condition

Tsutsumi H., Hisha Y., Yamaguchi University, JP

We prepared the proton conduction system, hydroxyapatite (HAp)-imidazole (Im)-polymer composite films and investigated their structure, conduction behavior and mechanical properties. HAp particles used in our investigation were prepared with two different ways, a-HAp and n-HAp. [...]

Determination of Pore Size Distribution of Nafion/Sulfated beta-Cyclodextrin

Jeon J-D, Lee B.H., Kwak S-Y, Seoul National Univesity, KR

Direct methanol fuel cells are promising candidates for portable power sources and transport applications. One of the critical problems hindering the commercialization of DMFCs is high methanol permeation rate across proton-exchange membranes. In this study, [...]

Heat is the Enemy of Energy Efficiency

Forder D., Fox P., TAG Technology, US

The flow of heat has been a major challenge to engineers for centuries. A new nanotech material, developed by TAG technologies, can block the flow of heat from one direction only. This presentation will present [...]

Dynamics of Water in Nafion Fuel Cell Membranes: the Effects of

Moilanen D.E., Piletic I.R., Fayer M.D., Stanford University, US

The complex environment experienced by water molecules in the hydrophilic channels of Nafion membranes is studied by ultrafast infrared pump-probe spectroscopy. A wavelength dependent study of the vibrational lifetime of the O-D stretch of dilute [...]

Building Green with Nanotechnology

Elvin G., Green Technology Forum, US

Nanotechnology, the manipulation of matter at the molecular scale, is opening new possibilities in green building through products like solar energy collecting paints, nanogel high-insulating translucent panels, and heat-absorbing windows. Even more dramatic breakthroughs are [...]

Molecular Building Blocks for Efficient Solid State Lighting

Burrows P.E., Sapochak L.S., Pacific Northwest National laboratory, US

General illumination consumes 22% of the electricity generated in the U.S. This huge proportion is partly due to the ubiquity of artificial lighting but also the inefficiency of converting electrical energy to light. Incandescent lightbulbs [...]