Sentences with phrase «oxide material under»

Not exact matches

Zou's group started with an oxide of indium - tantalum, a material that had been shown to have some photocatalytic activity but was inefficient under visible light because its band gap isn't sufficient.

Jonathan Petrie led the epitaxial synthesis of strained oxide materials and catalytic testing, and Tricia Meyer assisted thin film deposition using a technique that employs a high - power excimer laser to vaporize material and deposit it as high - quality thin films under precisely controlled conditions.

Researchers do have a well - established theoretical understanding of how perfectly structured versions of these insulating metal oxides function under a variety of conditions, such as in strong electric fields, but there was no such theory to describe the materials when they contain common types of defects, according to Yildiz.

Employing a strategic combination of detailed electronic structure calculations, combinatorial materials synthesis, and both traditional and high - throughout photoelectrochemistry measurements, the JCAP team identified earth - abundant copper and manganese vanadate complex oxides that meet highly demanding requirements for photoanodes: low band gap energy, stability under highly oxidizing conditions, and valence band alignment with respect to OER.

When the researchers looked under the microscope at catalyst material formed with alpha - aluminum oxide, platinum atoms formed balls that tottered around on the surface instead of tidy rafts.

The team prepared gamma - aluminum oxide under typical catalyst synthesis conditions and examined the supporting material before and after adding platinum.

Similarly, South Africa has launched a programme for the creation of centres of excellence that is designed to promote new knowledge and develop collaborative research projects on such critical issues as biomedical treatment for tuberculosis; research and development of strong materials (for example, alloys, metal oxides, ceramics and diamonds that retain their distinctive properties under extreme conditions); the impact of invasive species on biodiversity, ecosystems and tourism; and examinations of chemical catalysis, primarily for the conversion of gas to liquid fuels.