Relationship between absorbance spectra and particle size distributions for quantum-sized nanocrystals

Article Abstract:

The shape of the absorbance edge for a suspension of semiconductor quantum particles is influenced both by the electronic transition and the distribution of band gaps in the systems. The analysis of polydispersity of zinc oxide quantum particles creating broadening of the absorbance spectrum, is applicable to the wide range of semiconductor systems.

Observations, Electric properties, Absorption spectra

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The growth kinetics of TiO2 nanoparticles from titanium(IV) alkoxide at high water/titanium ratio

Article Abstract:

The growth kinetics of TiO2 nanoparticles synthesized from aqueous solution is reported using titanium(IV) isopropoxide as precursor. It was found that the number of primary particles per secondary particle increases with time, and the percentage of primary particles present in the colloid decreases with increasing temperature.

Titanium compounds, Aqueous solution reactions

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The influence of anion on the coarsening kinetics of ZnO nanoparticles

Article Abstract:

The synthesis of ZnO nanoparticles from Zn(CH3CO2)(sub 2), ZnBr2, and Zn(ClO4)(sub 2) in 2-propanol is reported. The rate constant for coarsening at constant temperature increases in the order of Br(super -) < CH3CO2(super -) < ClO4(super -) indicating that the rate is dependent on anion adsorption.

Influence, Adsorption, Anions

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