Improvement of catalytic performance of preferential oxidation of CO in H2-rich gases on three-dimensionally ordered macro- and meso-porous Pt–Au/CeO2 catalysts

Green synthesis of Pt–Au dendrimer-like nanoparticles supported on polydopamine-functionalized graphene and their high performance toward 4- nitrophenol reduction

“…However, the incorporation of multiple metals, as compared to a single metal, into a single system is more advantageous for most applications, caused by a synergistic effect [6][7][8][9][10][11][12]. For example, platinum-gold nanoparticles have been used as catalysts for reactions such as NO reduction [6], CO oxidation [7], glycerol oxidation [8], and nitrophenol reduction [9][10][11][12][13][14].…”

Synthesis of hierarchically porous metal oxides and Au/TiO2 nanohybrids for photodegradation of organic dye and catalytic reduction of 4-nitrophenol

“…Interest in this kind of materials is growing rapidly in recent years due to their intriguing characteristics in various applications including catalysis [1,2], sensors [3], adsorption [4], and energy conversion and storage [5,6]. In particular, the performance of hierarchically porous metal oxides in catalysis/photocatalysis is expected to be greatly improved over that of their counterparts with only one type of porosity [7,8]. The incorporation of macropores into mesoporous architectures can minimize diffusion barriers and enhance the distribution of the active sites during catalyst reactions [9].…”

Promoting effect of vanadium on catalytic activity of Pt/Ce–Zr–O diesel oxidation catalysts

“…Beck and Sommers (1995) investigated the effect of sulfur on a Pt-based three-way catalyst, and the result revealed that Pt-Rh showed excellent C 3 H 6 low-temperature activity and that the effect of SO 2 on the activity could be completely reversible. Liu et al (2013) prepared a three-dimensional Pt-Au/CeO 2 catalyst and discovered that the formation of a Pt-Au alloy and its interaction with CeO 2 are mainly responsible for the improvement in catalytic performance for CO oxidation. In addition, Pt-based catalysts modified by two different metals were also investigated in many studies, such as Pt-Pd-Ru/C catalysts (Arikan et al, 2013) and Pt-Ag-Au nanoparticles (Zhang et al, 2011).…”