A Review on Gold Nanoparticles Aggregation and Its Applications
- سال انتشار: 1399
- محل انتشار: فصلنامه مروری شیمی، دوره: 2، شماره: 4
- کد COI اختصاصی: JR_JCHM-2-4_002
- زبان مقاله: انگلیسی
- تعداد مشاهده: 284
نویسندگان
Department of Analytical chemistry, Faculty of Chemistry, Bu-Ali Sina University, ۶۵۱۷۸۶۳۸۶۹۵, Hamadan, Iran
Department of Analytical Chemistry, Faculty of Chemistry, Urmia University, Urmia, Iran
چکیده
In recent years, nanoparticles have been classified in three categories namely nanocrystals, films, and quantum dots. Due to the various properties of composites in comparison to individual particles, the studies that are related to the understanding and characterization of these materials have gained much importance. Solvated metal atom dispersion (SMAD) is a technique which includes the vaporization of the metal in a high vacuum reactor and the co-deposition of metallic vapor on the freeze reactor walls at liquid nitrogen temperature. An organic solvent is used to stabilize the metal atoms in the reaction, to form a solvation sphere, before they reach the frozen reactor walls. After the reaction, nanoparticles are warming at room temperature to form metal colloids. In this stage, depending on the metal concentration, metal type, organic solvent and delay time to stabilize the colloidal nanoparticles, the nanoparticles aggregation produce in different shapes (spherical, clusters, and fractals). The SMAD technique due to reducing and stabilizing the metal nanoparticles in a polymer matrix at the time of synthesis, avoiding metal agglomeration and oxidizing of metal nanoparticles does not produce salt. There is great concentration on these compounds as they can be used in medicine as antibacterial coatings, due to the biocidal action of Au nanoparticles (AuNps). Undeniably, numerous selective homogeneous catalysts from nanoparticles have been reported; however, the only feature is the ability of the polymer chain to protect and stabilize the metal particles from oxidation, therefore, the penetration of the reagents for the desired catalytic reactions is possible.کلیدواژه ها
Aggregation of Gold Nanoparticles, nano-biosensor, Dissociation of Gold Nanoparticles, Laser Irradiation, Visual detectionاطلاعات بیشتر در مورد COI
COI مخفف عبارت CIVILICA Object Identifier به معنی شناسه سیویلیکا برای اسناد است. COI کدی است که مطابق محل انتشار، به مقالات کنفرانسها و ژورنالهای داخل کشور به هنگام نمایه سازی بر روی پایگاه استنادی سیویلیکا اختصاص می یابد.
کد COI به مفهوم کد ملی اسناد نمایه شده در سیویلیکا است و کدی یکتا و ثابت است و به همین دلیل همواره قابلیت استناد و پیگیری دارد.