Determining the Behavior of RuO_x Nanoparticles in Mixed‐Metal Oxides: Structural and Catalytic Properties of RuO₂/TiO₂(110) Surfaces

Abstract

Ein guter Draht: Mit Rastertunnelmikroskopie, Röntgenphotoelektronenspektroskopie und Dichtefunktionalrechnungen wurde die Wechselwirkung von RuO2‐Nanostrukturen mit TiO2(110) untersucht. Rutheniumoxid bildet einzigartige, drahtähnliche Ru3O6‐Strukturen auf TiO2, die sich bei Temperaturen von 400–600 K leicht reduzieren und reoxidieren lassen, und zeigt eine sehr hohe katalytische Aktivität für die CO‐Oxidation bei niedriger Temperatur.

The interaction of size-selected Ru3 clusters with RF-deposited TiO2: probing Ru–CO binding sites with CO-temperature programmed desorption

“…Ru clusters in particular have been shown to be among the most active catalysts for industrial and environmentally relevant reactions such as CO and CO 2 hydrogenation. [8][9][10][11][12][13][14][15][16][17] Two of the main ways to deposit Ru clusters onto substrates is through the preparation of bare clusters in vacuum using an ultra-high vacuum (UHV) cluster source, or through depositing ligand-stabilized clusters such as Ru 3 (CO) 12 using chemical vapour deposition (CVD) [18][19][20][21][22] or a solution-based deposition. 23 This process of depositing metal carbonyl compounds using CVD is well explored in the literature and has been used to deposit clusters onto a number of substrates such as; metals (e.g.…”

On Water Cu@g‐C3N4 Catalyzed Synthesis of NH‐1,2,3‐Triazoles via [2+3] Cycloadditions of Nitroolefins/Alkynes and Sodium Azide

“…

Here, we have reported fabrication of graphitic polymeric C 3 N 4 supported CuCl 2 (Cu@g-C 3 N 4 ) and characterized by powder Xray diffraction, field emission scanning electron microscopy, high resolution transmission electron microscopy, X-ray photoelectron spectroscopy studies. An efficient and regioselective protocol for the on water synthesis of 4-aryl-NH-1,2,3-triazole derivatives via 1,3-diipolar cycloaddition reactions of nitroolefins/phenylacetylenes to sodium azide were demonstrated by using Cu@g-C 3 N 4 as robust and reusable catalyst.Development of sustainable protocols for the synthesis of 1,2,3triazole scaffolds have emerged one of the thrust area of research for organic chemist due to their exclusive pharmaceutical, [1][2][3][4][5][6] agrochemical, [7] medicinal [8][9][10][11][12][13] and many other applications. [14][15][16][17][18][19][20][21] Several strategies have been reported for the synthesis of 1,2,3-triazoles [22][23][24][25][26][27][28][29][30][31][32] and Huisgen's dipolar cycloaddition of organic azides and alkynes is the most straightforward route.

…”

“…Development of sustainable protocols for the synthesis of 1,2,3triazole scaffolds have emerged one of the thrust area of research for organic chemist due to their exclusive pharmaceutical, [1][2][3][4][5][6] agrochemical, [7] medicinal [8][9][10][11][12][13] and many other applications. [14][15][16][17][18][19][20][21] Several strategies have been reported for the synthesis of 1,2,3-triazoles [22][23][24][25][26][27][28][29][30][31][32] and Huisgen's dipolar cycloaddition of organic azides and alkynes is the most straightforward route.…”

Encapsulation of Size-Selected Ru3 Clusters into RF-Deposited TiO2

“…Two commonly utilised approaches for depositing Ru clusters onto substrates are firstly depositing gasphase size-selected, bare clusters using a cluster source (CS), and secondly depositing ligand-stabilised clusters such as Ru3(CO) 12. The latter can be deposited onto surfaces in two different ways: solution deposition (here shortened to SD, also called solution submersion) [18] and chemical vapor deposition (CVD) [19][20][21][22][23][24][25][26][27][28][29]. The deposition method can affect the resultant cluster properties, however very few studies have directly compared the cluster properties of identically sized clusters resulting from different deposition methods [21,30].…”