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Physical and Chemical Methods for Synthesis of Nanomaterials


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CO oxidation of catalysts

I, Au/α-Fe2O3 (Au/Fe = l/19, coprecipitation, 400°C);
(2) 0.5 wt% Pd-γ-Al2O3J (impregnation, 300°C);
3. Au fine powder;
4, Co3O4 (carbonate, 400°C);
5, NiO (hydrate, 200°C);
6, Cu-Fe2O3 (hydrate. 400°C);
7. 5 wt% Au/a-Fe2O3 (impregnation, 200°C); 8). 5 wt% Au -γ-Al2O3J
(impregnation. 200°C).


H2 Oxidation

I, Au/α-Fe2O3 (Au/Fe = l/19, coprecipitation, 400°C);
(2) 0.5 wt% Pd-γ-Al2O3J (impregnation, 300°C);
3. Au fine powder;
4, Co3O4 (carbonate, 400°C);
5, NiO (hydrate, 200°C);
6, Cu-Fe2O3 (hydrate. 400°C);
7. 5 wt% Au/a-Fe2O3 (impregnation, 200°C); 8). 5 wt% Au -γ-Al2O3J
(impregnation. 200°C).


Colour change with particle size


Quantum dots are
semiconductors particles
that has all three
dimensions confined to the
1-100 nm length scale


Crucial factors for nanoparticles production

applied working voltage
selected electric current
pulse duration (on/off-time)
electrode gap
temperature of the demonized water.