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Displaying 1 - 20 of 55 stories.
August 1, 2014
The effective removal of Cs+ ions from contaminated groundwater, seawater, and radioactive nuclear waste is crucial for public health and for the operation of nuclear power plants. Although several methods for the removal of Cs+ ions have been developed, there is still a need for better methods. Now a team of Korean researchers led by professor Kyung Byung Yoon from the Dept. of Chemistry, Sogang...
http://www.che.com/chementator/new_materials/Microporous-vanadosilicate-efficiently-removes-cesium-from-wastewater_11994.html
August 1, 2014
A Korean team has developed a carbon material that is as effective as graphene in applications, such as solar cells and semiconductor chips, using a process that requires only two steps instead of the usual eight. High-quality graphene is usually manufactured using chemical vapor deposition (CVD). In this method the graphene is manufactured on the board of a metal film that serves as a catalyst. The...
http://www.che.com/chementator/new_materials/A-two-step-process-for-making-graphene_12005.html
April 1, 2014
Separation of micron-sized oil droplets from water is difficult by conventional methods. A Chinese team has developed an oleophilic array of conical needle structures that can continuously collect micron-sized oil droplets from an oil-water mixture with high efficiency and high throughput. The team includes staff from the Institute of Chemistry of the Chinese Academy of Sciences, Dept. of Chemistry at...
http://www.che.com/chementator/new_materials/Imitating-nature-leads-to-a-separator-for-oil-droplets_11601.html
April 1, 2014
A new kind of highly flexible and non-flammable inorganic paper that can be used for the permanent and safe storage of information has been developed by a team led by professor Ying-Jie Zhu, from the Shanghai Institute of Ceramics, Chinese Academy of Sciences (www.sic.cas.cn). The work has been described in a recent issue of Chemistry — A European Journal. The team developed the paper, which is made...
http://www.che.com/chementator/new_materials/An-inorganic-paper-for-preserving-information-and-other-applications_11603.html
March 1, 2014
Researchers from Curtin University’s Fuels and Energy Technology Institute (Perth, Western Australia; www.curtin.edu.au), led by professors Gordon Parkinson and Chun-Zhu Li, have won the Mitsubishi Corp. Western Australia Innovator of the Year award for creating a new membrane that speeds up the transfer of oxygen. Currently, industrial oxygen production relies on a cryogenic process, which requires...
http://www.che.com/chementator/new_materials/New-ceramic-membranes-for-oxygen-separation_11508.html
November 1, 2013
An international team of researchers claims to have developed carbon nanotube (CNT) membranes with an ultrahigh specific-adsorption capacity for salt that is two orders of magnitude higher than that found in current activated-carbon-based water-treatment systems. The team includes researchers from Singapore University of Technology and Design (www.sutd.edu.sg), CSIRO’s Materials Science and...
http://www.che.com/chementator/new_materials/Plasma-modified-CNTs-show-promise-for-water-purification_11137.html
November 1, 2013
Researchers from the Australian National University (ANU; Canberra; www.anu.edu.au), and the University of New South Wales (Sydney, Australia; www.unsw.edu.au) claim to have obtained a temperature- and frequency-independent colossal permittivity (CP) material with a low dielectric loss, making it strikingly superior to typical existing CP materials. “We believe this work breaks through the logjam...
http://www.che.com/chementator/new_materials/A-new-material-for-large-scale-energy-storage-devices_11140.html
October 1, 2013
Iron ore is traditionally pelletized using the binding agent bentonite to facilitate transport and handling. A new additive for pelletizing iron ore significantly reduces the volume of binding agent required, while improving pellet strength and production output. Developed by Clariant AG (Muttenz, Switzerland; www.clariant.com), the pelletizing additive is a patented polymer-based binding agent that can...
http://www.che.com/chementator/new_materials/Pelletizing-technology-for-iron-ore-improves-strength-and-output_11024.html
September 1, 2013
Cement manufacturing is a major source of greenhouse gas emissions due to two factors: carbon dioxide is released when calcium carbonate calcines to lime (CaO) in the cement manufacturing process; and cement kilns are operated at temperatures of 1,500°C, which requires significant fuel consumption. Cement is the agent that binds sand and crushed rock together to form concrete. Solidia Technologies...
http://www.che.com/chementator/new_materials/Cement-technology-increases-strength-and-lowers-emissions-footprint_10905.html
July 1, 2013
A process that uses magnetic nanoparticles, coated with a reactive material, to clean up contaminated water for human use is being developed at Stanford University (Stanford, Calif.; www.stanford.edu). The nanoscavengers, as they are called, are distributed in the water to kill pollutants, then are recovered magnetically for re-use. Stanford’s particles are...
http://www.che.com/chementator/new_materials/These-scavengers-of-water-pollutants-have-a-magnetic-attraction_10645.html
July 1, 2013
Freestanding nanowires exhibit ultrahigh elastic-strain limits (of up to 7%) and yield strengths. However, it has been difficult to exploit their properties in bulk composites, due to the mismatch between the elasticity of the nanowires and the elasticity of the metals that form the matrix. The nanowires will experience an elastic deformation of several percent, but normally the metals that form the matrix...
http://www.che.com/chementator/new_materials/Nanowires-improve-the-properties-of-metal-composites_10651.html
June 1, 2013
Seiko PMC Corp. (Tokyo; www.seikopmc.co.jp) has installed a pilot plant for the production of cellulose nanofibers (CNFs) at its Ryugasaki Factory, and will begin shipping samples next spring with the aim of commercial activities in 2015. In...
http://www.che.com/chementator/new_materials/A-pilot-plant-for-making-CNFs_10554.html
June 1, 2013
Nippon Paper Industries Co. (Nippon Paper; Tokyo; www.nipponpapergroup.com) is constructing a verification plant for the production of cellulose nanofibers (CNFs) at the Chemical Div. of its Iwakuni...
http://www.che.com/chementator/new_materials/A-production-plant-for-CNFs_10561.html
June 1, 2013
Oji Holdings Corp. (OJI; www.ojiholdings.co.jp) and Mitsubishi Chemical Corp. (MCC; both Tokyo, Japan; www.m-kagaku.co.jp) have developed a continuous process for producing transparent sheets made from ultra-thin, wood-based cellulose nanofibers (CNF). Both OJI’s papermaking technology and MCC’s chemical treatment technology...
http://www.che.com/chementator/new_materials/Continuous-production-of-transparent-sheets-of-cellulose-nanofibers_10567.html
May 1, 2013
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
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
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 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
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
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
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