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Lazar, M., Ducu, C., Almasan, V., Aldea, N., Barz, B., Marginean, P., Sutan, C. and Malinovschi, V. (2006) Nanostructured Gold Supported Catalysts: Relation between Structure and Hydrogen Catalytic Activity. Romanian Journal of Physics, 51, 299.

has been cited by the following article:

• TITLE: Synthesis, Characterization and Photocatalytic Application of Different Sizes of Gold Nanoparticles on 4-Nitrophenol

  AUTHORS: R. Seoudi, F. A. Al-Marhaby

  KEYWORDS: Gold Nanoparticles, Surface Plasmon Band, Photocatalyst, Rate Constant

  JOURNAL NAME: World Journal of Nano Science and Engineering, Vol.6 No.3, September 23, 2016

  ABSTRACT: In this work, different sizes of gold nanoparticles were synthesized at room temperature by using trisodium citrate as a surfactant stabilizing agent and sodium borohydride as a reducing agent. Transmission Electron Microscopy (TEM) confirmed that the samples were synthesized in spherical shapes with three different particle sizes: 4 nm, 7 nm and 11 nm. Ultraviolet-visible spectra measurements were used to analyze the way that surface plasmon bands were affected by the different particles sizes. The effect of sphere size on photocatalytic reduction of 4-Nitrophenol was then studied and the rate constant of the reduction was calculated to be 0.014 s-1, 0.0091 s-1 and 0.003 s-1 for particles sizes of 4 nm, 7 nm and 11 nm, respectively. The results obtained indicated that small particles were more active in catalytic reduction due to their high surface energy.