Catalytic activity of Au/TiO2 and Pt/TiO2 nanocatalysts prepared with arc plasma deposition under CO oxidation

Enhanced photocatalytic generation of hydrogen by Pt-deposited nitrogen-doped TiO2 hierarchical nanostructures

“…Interstitial N doping also plays and active role for extending absorption to the visible range. APD Pt deposited using the same conditions as in the cases of Pt and Au-TiO 2 [31] suggests that Pt exists predominantly in the metallic state, with small portions in the oxidized states of +2 and +4 [35,36]. The metallic state of Pt can act as a good co-catalyst for electron transfer.…”

“…Pt was deposited on the NHPT catalyst using APD [31]. The arc pulses were generated with a period of 0.2 ms, frequency of 2 Hz, arc discharge condenser capacity of 1800 µF, and arc discharge voltage of 100 V. The number of pulses was 2500/g for each sample.…”

Visible light photoactivity of TiO2 loaded with monometallic (Au or Pt) and bimetallic (Au/Pt) nanoparticles

“…Therefore Au and Pt NPs exist in the Au-core and Pt-shell structure [25]. According to literature data, monometallic photocatalysts, such as Au-TiO 2 and Pt-TiO 2 , were extensively described in the field of catalysis [26][27][28][29][30][31][32], and photocatalysis [33][34][35][36][37][38][39]. In the case of Au-Pt bimetallic combination, literature mainly relies on the widely use of traditional heterogeneous catalysts and show an evidence of electronic transfers from Au to Pt as well as surface ensemble effects, which constitute the good performances observed, for instance, in hydrogenation reactions [21,[40][41][42][43].…”

Layered sphere-shaped TiO 2 capped with gold nanoparticles on structural defects and their catalysis of formaldehyde oxidation

“…Crystalline titanium dioxide (TiO 2 ) is a good dispersant and catalytic promoter when used as a support in Au/TiO 2 catalysts (Erjavec et al, 2013;Kim et al, 2013;Li et al, 2013;Wang et al, 2014;Liu et al, 2010;Zhang et al, 2010). TiO 2 crystallizes in three different phases: rutile, anatase, and brookite.…”