نتایج جستجو برای: bottom up synthesis

تعداد نتایج: 1344617  

Journal: :Materials research foundations 2023

There are numerous potential uses as nanoparticles produced from green methods in the medicinal and environmental sciences with a reduction of harmful chemicals solvents. To synthesize use safe organic resources like plants, microorganisms producing for applications such catalysis, sensing, electronics, photonics medicine. Aiming to minimize or prevent waste generated reactions while maintainin...

2016
Li Wang Yujing Sun Zhuang Li Aiguo Wu Gang Wei

The combination of nanotechnology, biology, and bioengineering greatly improved the developments of nanomaterials with unique functions and properties. Biomolecules as the nanoscale building blocks play very important roles for the final formation of functional nanostructures. Many kinds of novel nanostructures have been created by using the bioinspired self-assembly and subsequent binding with...

Journal: :Journal of the American Chemical Society 2011
Mark R Langille Michelle L Personick Jian Zhang Chad A Mirkin

Gold octahedra with hollow features have been synthesized in high yield via the controlled overgrowth of preformed concave cube seeds. This Ag(+)-assisted, seed-mediated synthesis allows for the average edge length of the octahedra and the size of the hollow features to be independently controlled. We propose that a high concentration of Ag(+) stabilizes the {111} facets of the octahedra throug...

Journal: :Chemical communications 2014
Timothy H Vo Mikhail Shekhirev Donna A Kunkel François Orange Maxime J-F Guinel Axel Enders Alexander Sinitskii

Large quantities of narrow graphene nanoribbons with edge-incorporated nitrogen atoms can be synthesized via Yamamoto coupling of molecular precursors containing nitrogen atoms followed by cyclodehydrogenation using Scholl reaction.

2012
Moira Ambrosi Emiliano Fratini Patrizia Canton Stephan Dankesreiter Piero Baglioni

It is well known that the structure of ZrO2 powder synthesized by low temperature calcination of hydrous zirconia is strongly affected by the nature and properties of precursors. In the present paper, we combined a precipitation/restructuring approach (bottom-up/top-down methodology) to produce zirconium hydroxide nanoparticles that transform into stable nanophasic tetragonal zirconia by low te...

Journal: :international journal of environmental research 2014
m. kolahi k. moriya t. sakai e. khosrojerdi v. etemad

participatory conservation, as bottom-up management, is currently the most acceptable modelfor management of protected areas across the world. social context is a central issue in the sustainablemanagement of conservation areas. it is also crucial to introducing participatory conservation. the newapproach therefore recognizes rural communities as key partners in biodiversity management and seek...

Journal: :international journal of aquatic biology 0
seyed ali johari aquaculture department, faculty of natural resources, university of kurdistan, zip code: 66177-15175, p.o. box 416, sanandaj, kurdistan, iran. iman sourinejad fisheries department, faculty of oceanic and atmospheric sciences and technologies, university of hormozgan, bandar abbas, iran. niko bärsch ceo, particular gmbh, langenhagen, germany. somayye saed-moocheshi gorgan university of agricultural sciences and natural resources, gorgan, iran. andishe kaseb marine sciences faculty, tarbiat modares university, noor, iran. nina nazdar natural resources faculty, urmia university, urmia, iran.

use of nano-materials has increased in various aspects of human life. however, possible outbreak of nano-materials toxicity in humans and other organisms is one of the future challenges. different chemical precursors which are used in chemical approaches for production of nano-materials may have secondary and sometimes toxic effects in living organisms. these secondary effects may be reduced in...

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