Anchoring highly active gold nanoparticles on SiO2 by CoOx additive

Qian, Kun; Huang, Weixin; Jiang, Zhiquan; Sun, Huaxing

doi:10.1016/j.jcat.2007.02.010

Cited by 90 publications

(43 citation statements)

References 28 publications

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“…At the same time, many other ways have also been developed including seeking for proper gold precursors [123,124], designing organic-inorganic structures [125,126], depositing decorated gold-RMO structures synthesized by colloid method on to the surface of silica [127], modifying the surfaces of silica with RMOs (e.g., CoOx [128][129][130], TiO 2 [131,132], etc.) and using ammonia solution to tune the charge on the surface of silica [133].…”

Section: Synthesis Of Au/iro Catalystsmentioning

confidence: 99%

Catalysis by gold: New insights into the support effect

et al. 2013

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Section: Synthesis Of Au/iro Catalystsmentioning

confidence: 99%

Catalysis by gold: New insights into the support effect

et al. 2013

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“…Based on the chemical properties of the second metal, we can classify gold-based bimetallic catalysts into two types. The first type is Au-BM catalysts, where BM refers to base metals such as Cu [21][22][23][24][25][26], Ag [27][28][29][30][31][32][33][34][35], Co [36][37][38], and Ni [39][40][41], and the second type is Au-PGM catalysts, where PGM refers to platinum group metals such as Pt [42,43], Pd [44][45][46][47], Rh [48], and Ir [49]. This classification may not cover all the gold bimetallic catalysts, but it will facilitate understanding the synergistic effect between gold and the second metal in catalysis.…”

Section: Introductionmentioning

confidence: 99%

Understanding the synergistic effects of gold bimetallic catalysts

Wang

Liu

Mou

et al. 2013

Journal of Catalysis

184

107

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“…The other method involves calcination of a mixed precursor of noble metal and support materials at relatively high temperature [26,27]. However, aggregation of nanoparticles is hard to avoid in the first case, while the size of the noble metal particles is difficult to control in the second case [25,28].…”

mentioning

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Large scale photochemical synthesis of M@TiO2 nanocomposites (M = Ag, Pd, Au, Pt) and their optical properties, CO oxidation performance, and antibacterial effect

et al. 2010

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Well-dispersed M@TiO 2 (M = Ag, Pd, Au, Pt) nanocomposite particles with a diameter of 200-400 nm can be synthesized on a large scale by a clean photochemical route which does not require any additives using spherical rutile nanoparticles as a support. The sizes of Pt, Au, and Pd nanoparticles formed on the surface of TiO 2 particles are about 1 nm, 5 nm, and 5 nm, respectively, and the diameter of Ag nanoparticles is in the range 2-20 nm. Moreover, the noble metal nanoparticles have good dispersity on the particles of the TiO 2 support, resulting in excellent catalytic activities. Complete conversion in catalytic CO oxidation is reached at temperatures as low as 333 and 363 K, respectively, for Pt@TiO 2 and Pd@TiO 2 catalysts. In addition, the antibacterial effects of the as-synthesized TiO 2 nanoparticles, silver nanoparticles, and Au@TiO 2 and Ag@TiO 2 nanocomposites have been tested against Gram-negative Escherichia coli (E. coli) bacteria. The results demonstrate that the presence of the TiO 2 matrix enhances the antibacterial effect of silver nanoparticles, and the growth of E. coli can be completely inhibited even if the concentration of Ag in Ag@TiO 2 nanocomposite is very low (10 μg/mL).

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Anchoring highly active gold nanoparticles on SiO2 by CoOx additive

Cited by 90 publications

References 28 publications

Catalysis by gold: New insights into the support effect

Catalysis by gold: New insights into the support effect

Understanding the synergistic effects of gold bimetallic catalysts

Large scale photochemical synthesis of M@TiO2 nanocomposites (M = Ag, Pd, Au, Pt) and their optical properties, CO oxidation performance, and antibacterial effect

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