Nanočástice PS 2012 1
Syntéza Nps
Brno, PS 2012
Přednášející: doc. Jiří Sopoušek E-mail:
sopousek@mail.muni.cz, tel.: 549497138
Ofice: UKB A12/M231
Ústav chemie: http://ustavchemie.sci.muni.cz/
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Au-nano
Roz,sjhKSdělení
Nanočástice PS 2012 2
Reakce Liquid  solid
Ultrafine particles are produced by precipitation from a solution,
the process being dependent on the presence of the desired nuclei.
For example, TiO2 powders have been produced with particle sizes
in the range 70-300 nm from titanium tetraisopropoxide. The ZnS
powders were produced by reaction of aqueous zinc salt solutions
with thioacetamide (TAA). Precursor zinc salts were chloride,
nitric acid solutions, or zinc salts with noncommon associated
ligands (i.e., acetylacetonate, trifluorocarbonsulfonate, and
dithiocarbamate). The 0.05 M cation solutions were heated in a
thermal bath maintained at 70° or 80 °C in batches of 100 or 250
ml. Acid was added dropwise to bring it to a pH of 2. The reaction
was started by adding the TAA to the zinc salt solution, with the
molar ratio of TAA and zinc ions being set to an initial value of
either 4 or 8. In intervals, aliquots were collected from the
reacting solution.
Synatéza nukleace NPs:
http://www.zeepedia.com/read.php?synthesis_of_materials_b
ased_on_solubility_principle_synthetic_strategies_in_chemist
ry&b=132&c=4
Nanočástice PS 2012 3
Wet Chemical Synthesis of
nanomaterials (Sol-gel process)
Použítí:
Příprava
oxidů
Nanočástice PS 2012 4
http://web.chem.ucsb.edu/~hangroup/resear
ch_lipids.html
Nanočástice PS 2012 5
http://www.opticsinfobase.org/om
e/fulltext.cfm?uri=ome-1-2-
164&id=213567
Nanočástice PS 2012 6
Diskuse
DN? ?
http://www.nature.com/nmat/journal/v8/n2/fig_tab/nmat2363_F1.html
a, Size-controlled Ni nanorods coated with SiO2. b, Pt
nanoparticles embedded in hexagonally shaped Fe
nanoparticles. c, Self-assembled cubic FePt nanoparticles
with their (100) planes parallel to the substrate.
Syntéza MeO NPs: http://cnx.org/content/m23038/latest/