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Gold colloids

Weitz D A and Huang J S 1984 Self-similar structures and the kinetics of aggregation of gold colloids Kinetics of Aggregation and Geiationed F Family and D P Landau (Amsterdam North-Holland) pp 19-28... [Pg.2693]

Wilcoxon J P, Williamson R L and Baughman R 1993 Optical properties of gold colloids formed in inverse micelles J. Chem. Phys. 98 9933... [Pg.2915]

Grabar K C ef a/1997 Nanoscale characterization of gold colloid monolayers—a comparison of four techniques Anal. Chem. 69 471... [Pg.2920]

The use of tetraoctylammonium salt as phase transfer reagent has been introduced by Brust [199] for the preparation of gold colloids in the size domain of 1-3 nm. This one-step method consists of a two-phase reduction coupled with ion extraction and self-assembly using mono-layers of alkane thiols. The two-phase redox reaction controls the growth of the metallic nuclei via the simultaneous attachment of self-assembled thiol monolayers on the growing clusters. The overall reaction is summarized in Equation (5). [Pg.28]

In order to deposit gold on the supports with high dispersion as nanoparticles (NPs) and clusters, there are at least nine techniques which can be classified into five categories well mixed precursors, specific surface interaction, mixing gold colloids [18], physical deposition [19,20], and direct reduction [21]. The former two categories are schematically presented in Figure 3. [Pg.183]

Mixing of Gold Colloids with the Support Materials [32]... [Pg.185]

This method is especially valid for the preparation of gold NPs mixed with activated carbon, which are active and stable for the selective oxidation of hydrocarbons and alcohols in water. Over activated carbon gold could not be directly deposited as NPs by using the techniques described above, such as DP and even by GG. Gold colloids with mean diameters from 2.5 to lOnm stabilized by poly vinyl alcohol or poly vinyl p5rrolidone are used. [Pg.185]

Gold Colloidal Nanoparticles Sized to be Suitable Precursors for Heterogeneous Catalysts... [Pg.355]

The sensitivity limitations of TLC-FT-Raman spectroscopy may be overcome by applying the SERS effect [782]. Unlike infrared, a major gain in Raman signal can be achieved by utilising surface activation and/or resonance effects. Surface-enhanced Raman (SER) spectra can be observed for compounds adsorbed on (rough) metahic surfaces, usually silver or gold colloids [783,784], while resonance Raman (RR) spectra... [Pg.536]

Holt KB, Sabin G, Compton RG et al (2002) Reduction of tetrachloroaureate(III) at boron-doped diamond electrodes gold deposition versus gold colloid formation. Electroanalysis 14 797-803... [Pg.127]

Olson LG, Lo YS, Beebe TP Jr, Harris JM (2001) Characterization of silane-modified immobilized gold colloids as a substrate for surface-enhanced Raman spectroscopy. Anal Chem 73 4268-4276... [Pg.165]

Figure 5.9 Synthesis of gold nanoparticles within Zr02. A gold colloid is first prepared then coated with silica using a modified Stober process [75]. The silica is removed using NaOH. Reproduced with permission from [74],... Figure 5.9 Synthesis of gold nanoparticles within Zr02. A gold colloid is first prepared then coated with silica using a modified Stober process [75]. The silica is removed using NaOH. Reproduced with permission from [74],...
Dou X., Yamaguchi Y., Yamamoto H., Doi S., Ozaki Y., NIR SERS detection of immune reaction on gold colloid particles without bound/free antigen separation, J. Raman Spectrosc. 1998 29 739-742. [Pg.258]

See other pages where Gold colloids is mentioned: [Pg.551]    [Pg.1710]    [Pg.2910]    [Pg.2911]    [Pg.59]    [Pg.67]    [Pg.1032]    [Pg.59]    [Pg.59]    [Pg.72]    [Pg.74]    [Pg.403]    [Pg.156]    [Pg.736]    [Pg.322]    [Pg.347]    [Pg.23]    [Pg.28]    [Pg.191]    [Pg.243]    [Pg.356]    [Pg.401]    [Pg.401]    [Pg.402]    [Pg.430]    [Pg.200]    [Pg.256]    [Pg.250]    [Pg.184]    [Pg.244]    [Pg.248]    [Pg.249]    [Pg.442]   
See also in sourсe #XX -- [ Pg.87 ]

See also in sourсe #XX -- [ Pg.52 , Pg.118 , Pg.120 , Pg.623 ]

See also in sourсe #XX -- [ Pg.87 ]

See also in sourсe #XX -- [ Pg.456 , Pg.461 , Pg.486 ]



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Colloidal gold

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