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3篇 您的检索式:作者名="Petr Praus"
    题名 作者 年代 出处 被引量
1Zn_(x)Cd_(1-x)S量子点组成与其光催化活性的关系显示文摘Aqueous colloidal dispersions containing Znx Cd1‐x S quantum dots (QDs) of different x compositions were prepared by precipitating zinc and cadmium acetates with sodium sulphide,in the presence of a cetyltrimethylammonium bromide stabilizer.Ultraviolet‐visible absorption spectroscopy was used to determine the transition energies of the QDs,which in turn were used to calculate their sizes,which depended on their composition.The QD size decreased with increasing Zn content.The photocatalytic activity of the Znx Cd1‐x S QDs was studied by the decomposition of methylene blue under ultraviolet irradiation,at a maximum intensity at 365 nm (3.4 e V).Three different photo‐catalytic activity regions were observed,which depended on the Zn content.The quantum levels of the QDs could be excited by incident irradiation,and influenced the resulting photocatalytic activity.Maximum photocatalytic activity was achieved at x = 0.6,where the QD transition energy was equal to the irradiation photon energy.The photocatalytic efficiency of the QDs depended on their surface area and arrangement of quantum levels,because of the quantum size effect.Alice Hospodková Ladislav Svoboda Petr Praus 2015催化学报2015,36,3:2
2Nanocomposite of montmorillonite and silver nanoparticles: Characterization and application in catalytic reduction of 4-nitrophenol显示文摘Petr Praus Martina Turicová Martina Karlíková Libor Kvítek Richard Dvorsky 2013Materials Chemistry and Physics (-)2013,,2:1
3Study of Cetyhrimethylammonium and Cetylpyrid- inium Adsorption on Montmoritlonite 显示文摘Praus Petr Martina Turicova Sona Studentova 2006Journal of Colloid and Interface Science2006,304,:1
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