Colloidal metals: past, present and future
نویسنده
چکیده
A critical assessment of the various X-ray and electron-based methods of determining the structure of ultrafine metallic particles of colloidal dimension is given. In particular, examples of the use and potential of high-resolution electron microscopy of high-angle Rutherford scattering and of scanning tunneling microscopic procedures are illustrated. Several growth points of current and possible future uses of colloidal metals are identified; and the role of a variety of colloidal metals in (gas-solid) catalysis, in photocatalysis and in the photogeneration of organic materials are discussed. The prospects of finetuning colloidal catalysts are also briefly touched upon.
منابع مشابه
Climate Change Modeling and Drought Detection of Lake Neor by Approaching to Past, Present, and Future
این مقاله فاقد چکیده میباشد.
متن کاملMizaj past, present and future
Temperament (Mizaj), as an individual factor, has great importance in traditional medicine and its use in diagnosis and treatment of diseases, as well as the individual lifestyle is very common. Since medicine moves toward Personalized Medicine, the root of individual differences will find its position in different aspects of medicine in early future. In traditional medicine, temperament is ...
متن کاملTeachers’ Professional Competencies: Past, Present, and Future
Teachers’ Professional Competencies: Past, Present, and Future M. Rezaai, Ph.D.* The purpose of this paper is to review the expected professional competencies throughout the history of teacher training in Iran. As such it covers both the past, covering the period from teacher training inception in 1918 to the Islamic revolution in 1979; and the present, since the revolution. Of course t...
متن کاملEnteric redmouth disease: Past, present and future: A review
Enteric red mouth disease (also known as Yersiniosis) is one of the most significant bacterial infections in coldwater fish farms that cause significant mortalities and economical losses in the salmonids fish farms, especially in rainbow trout (Oncorhynchus mykiss). ERM is caused by the gram negative pathogen bacteria Yersinia ruckeri that has five O-serotypes (O1, O2, O5, O6 and O7), five oute...
متن کاملBioavailability of colloid-bound Cd, Cr, and Zn to marine plankton
The uptake of colloid-bound Cd, Cr, and Zn by marine plankton (including the diatom Thalassiosira pseudonana, the dinoflagellate Prorocentrum minimum, and the copepod Paracalanus aculeatus) was studied using the radiotracer technique. Natural organic colloids (operationally defined as particles between 1 kDa and 0.2 μm) were isolated from Hong Kong coastal seawater using cross-flow ultrafiltrat...
متن کامل