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Displaying 1 - 20 of 41 stories.
May 1, 2013
Bioengineers make an ‘ideal’ hydrogel for antimicrobial applications
Although several antimicrobial hydrogels have been developed in recent years, they all have one or more drawbacks, such as possible toxicity, insufficient stability and biodegradability, and high costs. These and other drawbacks have been overcome with a synthetic hydrogel being developed by researchers from the Institute of Bioengineering and Nanotechnology (Singapore; www.ibn.a-star.edu.sg) and IBM...
http://www.che.com/chementator/new_materials/Bioengineers-make-an-ideal-hydrogel-for-antimicrobial-applications_10450.html
April 1, 2013
Simplified CO2-to-methanol process uses copper-oxide nanowires
A process developed by researchers at the University of Texas at Arlington (www.uta.edu) uses copper-based semiconductor nanoscale-rod arrays and solar radiation to carry out a photoelectroreduction of carbon dioxide to methanol. The process offers a pathway to utilize the greenhouse gas CO2 as a feedstock to synthesize a widely manufactured chemical...
http://www.che.com/chementator/new_materials/Simplified-CO2-to-methanol-process-uses-copper-oxide-nanowires_10364.html
April 1, 2013
Quantum clusters serve as ultra-sensitive detectors
Detection of extremely small quantities of dangerous or hazardous substances is important in many areas, including national security, safety of public utilities and radiation prevention. Several analytical methods have been developed using structural, functional and electronic properties of nanomaterials. In particular, noble-metal quantum clusters (QCs), a family of nanomolecules exhibiting intense...
http://www.che.com/chementator/new_materials/Quantum-clusters-serve-as-ultra-sensitive-detectors_10369.html
April 1, 2013
A method to produce an iron-titanium alloy for H2-storage
A new and inexpensive way to produce TiFe — an alloy with potential as a material for reversibly storing hydrogen — has been developed by the research groups of professors Zenji Horita and Etsuo Akiba at Kyushu University (Fukuoka, Japan; www.kyushu-u.ac.jp). The TiFe is made by a technique known...
http://www.che.com/chementator/new_materials/A-method-to-produce-an-iron-titanium-alloy-for-H2-storage_10371.html
April 1, 2013
MOFs that reversibly capture CO2
An Australian team has developed a structure made of a metal organic framework (MOF) that captures and then releases CO2 using natural sunlight. The team includes researchers from: CSIRO Division of Materials Science and Engineering, (Clayton South, Victoria; www.csiro.au) the Dept. of Chemical Engineering, Monash University (www.monash.edu.au) and the School of Chemistry, University of Sydney...
http://www.che.com/chementator/new_materials/MOFs-that-reversibly-capture-CO2_10376.html
April 1, 2013
Production facility for stabilized sodium slated for startup
A new plant for manufacturing sodium silicide (Na4Si4;diagram), a non-flammable, air-stable powder that reacts with water to generate pure hydrogen, is under development near Niagara Falls, N.Y. by SiGNa Chemistry Inc. (New York; signachem.com). Scheduled for startup in the third quarter of 2013, the facility will produce 1,000 ton/yr of sodium silicide using a proprietary thermal process that was...
http://www.che.com/chementator/new_materials/Production-facility-for-stabilized-sodium-slated-for-startup_10378.html
March 1, 2013
Making graphene oxide in ‘a microwave’
Microwave irradiation of graphite has been shown to produce graphene oxide with 90% yield by the research group of professor Yuta Nishina, Research Core for...
http://www.che.com/chementator/new_materials/Making-graphene-oxide-in-a-microwave_10242.html
March 1, 2013
Making cork-like monoliths from graphene
A team from Monash University (Melbourne, Australia; www.monash.edu.au) has prepared graphene monoliths with a cork-like hierarchical structure, exhibiting ultra-low density, superelasticity, good electrical conductivity and high efficiency of energy absorption. The ability to maintain structural integrity upon large deformation is important for many emerging applications, such as flexible electronic...
http://www.che.com/chementator/new_materials/Making-cork-like-monoliths-from-graphene_10248.html
March 1, 2013
A continuous process to make graphene
An inexpensive and scalable process that uses supercritical (SC) liquids to make large quantities of graphene is being developed by the group of professor Itaru Honma at the Institute of Multidisciplinary Research for Advanced Materials, Tohoku University (Sendai; db.tagen.tohoku.ac.jp), in collaboration with Showa...
http://www.che.com/chementator/new_materials/A-continuous-process-to-make-graphene_10264.html
February 1, 2013
This molecular sieve has a trapdoor to selectively pass CO2
An Australian team has developed a new molecular sieve that allows carbon dioxide molecules to be trapped and stored. Contrary to the way molecular sieves usually work, allowing smaller molecules through, the new sieve acts like a trapdoor, and allows larger molecules through, blocking smaller ones. The team, led by professor Paul A. Webley of the University of Melbourne (Australia; www.unimelb.edu.au)...
http://www.che.com/chementator/new_materials/This-molecular-sieve-has-a-trapdoor-to-selectively-pass-CO2_10147.html
February 1, 2013
Spun carbon-nanotube fibers with unmatched properties of any other material
For the first time, it has become possible to spin carbon nanotubes (CNTs) into a fiber that looks and acts like textile threads, yet has the electrical conductivity and strength of a metal. The breakthrough, which came after more than ten years of research, was published in the January 11 issue of Science by scientists from Rice University (Houston; www.rice.edu), Teijin Aramid B.V. (Arnhem, The...
http://www.che.com/chementator/new_materials/Spun-carbon-nanotube-fibers-with-unmatched-properties-of-any-other-material_10171.html
January 1, 2013
Nanoscale particles help produce steam
A research group at Rice University (Houston; www.rice.edu) has developed a method for vaporizing water into steam using sunlight-illuminated nanoparticles, with only a small fraction of the energy heating the fluid. Sub-wavelength metal or carbon particles are intense absorbers of optical...
http://www.che.com/chementator/new_materials/Nanoscale-particles-help-produce-steam_10077.html
October 1, 2012
Progress for making smart membranes
Last month marked the completion of the three-year, €3.6-million E.U.-funded research project, Self-assembled Polymer Membranes (SelfMem). Coordinated by the Institute of Polymer Research at the Helmholtz-Zentrum Geesthacht (HZG; Germany; www.hzg.de), with twelve partners from industry and academia in Israel, Canada and Europe, the SelfMem network studied self-organizing isoporous block copolymer...
http://www.che.com/chementator/new_materials/Progress-for-making-smart-membranes_9764.html
October 1, 2012
A nano cage made from a stack of benzenes
Professor Kenichoro Itami and his group at Nagoya University (synth.chem. nagoya-u.ac.jp) have synthesized a cage-type carbon nano-molecule, Carbon Nano-cage, composed of 20 condensed benzene rings — C120H78. The group used a procedure it developed four years ago to synthesize carbon nano-rings with the ability to eliminate the distortion of ring-type benzene structures during synthesis steps. First...
http://www.che.com/chementator/new_materials/A-nano-cage-made-from-a-stack-of-benzenes_9771.html
September 1, 2012
A step toward the production of fuel for nuclear fusion
Masaru Nakamichi, leader of the Blanket Technology Group, Naka Fusion Institute, Japan Atomic Energy Agency (JAEA, Ibaraki, Japan; www.naka.jaea.go.jp) has developed a new fabrication technology that enables the mass-production of beryllium intermetallic compounds (beryllides), which are advanced, efficient neutron multipliers that could be used for nuclear fusion reactors. JEAE is said to be the first to...
http://www.che.com/chementator/new_materials/A-step-toward-the-production-of-fuel-for-nuclear-fusion_9630.html
August 1, 2012
A self-healing dynamic membrane
French researchers from the Institut Européen des Membranes (CNRS/ENSCM, Université Montpiellier; www.iemm.univ-mont2.fr) and the Institut de Chimie Radicalaire (CNRS, Aix-Marseille Université) have developed what is claimed to be the first dynamic membrane...
http://www.che.com/chementator/new_materials/A-self-healing-dynamic-membrane_9518.html
August 1, 2012
The mass production of organic-modified metal oxide nanoparticles
A system that continuously produces 10 ton/yr of nanoparticles has been developed by Tadafumi Adschiri, principal investigator at the Advanced Institute for Materials Research (AIMR) and professor at the Institute of Multidisciplinary Research for Advanced Materials and New Industry Hatchery Center, Tohoku University (Sendai; Japan; www.wpi-aimr.tohoku.ac.jp/en). The process, which uses a supercritical...
http://www.che.com/chementator/new_materials/The-mass-production-of-organic-modified-metal-oxide-nanoparticles_9526.html
July 1, 2012
A compact thermal storage system
Theres a growing trend toward generating electricity from biogas (see pp. 15–17), but roughly half of the total energy content of the fuel is released as heat, which is dissipated into the...
http://www.che.com/chementator/new_materials/A-compact-thermal-storage-system_9447.html
July 1, 2012
Making artificial water channels
A group of scientists from Fudan University (Shanghai, China; www.fudan.ac.cn) China, has reported what it claims to be the first example of artificial single-molecular water channels that can transport water across lipid membranes. Transmembrane water transport — through water channel proteins called aquaporins — is of crucial importance in living organisms because it regulates the osmotic...
http://www.che.com/chementator/new_materials/Making-artificial-water-channels_9449.html
June 1, 2012
Manufacturing bee silk with bacteria
A partnership between Australian research agency CSIRO (Melbourne, Australia; www.csiro.au) and Lonza Group Ltd. (Basel, Switzerland; www.lonza.com), aims to market new insect silk products globally. Potential applications of insect silk include composite fibers for the aviation and marine industries, and medical applications such as wound repair, drug delivery, repairing and replacing human tissues such...
http://www.che.com/chementator/new_materials/Manufacturing-bee-silk-with-bacteria_9367.html
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