Effects of synthesis conditions on structure and surface properties of SmMn2O5 mullite-type oxide

Mg Doped CuCrO2 as Efficient Hole Transport Layers for Organic and Perovskite Solar Cells

“…XPS studies were carried out in order to confirm the oxidation states of Cu, Cr, and Mg in the Mg:CCO powders. XPS data was analyzed using PHI Multipak software and peak fitting was done using a Gaussian–Lorentzian profile after a Shirley type background subtraction [53]. The binding energy was shifted using the valence band edge.…”

Effect of R-site element on crystalline phase and thermal stability of Fe substituted Mn mullite-type oxides: R2(Mn1−xFex)4O10−δ (R = Y, Sm or Bi; x = 0, 0.5, 1)

“…Peak tting was performed using Multipak soware as reported in our previous work. 21 The estimated error in binding energy measurements is AE 0.01 eV.…”

“…The insight gained through such combined experimental and theoretical studies will advance the design of mullite-type oxides with desired properties. 21 The precipitate obtained was then ltered and dried at 378 K overnight. The dried samples were ground and calcined at 773 K for 8 h in air to eliminate organic materials, followed by a second calcination step at high temperatures.…”

Earth‐Abundant Transition Metal‐Based Mullite‐Type Oxide Catalysts for Heterogeneous Oxidation Reactions

“…In the first report of mullite oxide as NO oxidation catalysts, Wang and coworkers used a conventional method, coprecipitation (CP) followed by calcination, [ 38 ] that was later widely exploited to prepare mullite oxides with varied compositions. [ 40,59,60 ] This method involves mixing two metal salts in a solution and forcing them to precipitate by quickly increasing the pH. For example, the synthesis of SmMn 2 O 5 consists of mixing the salt precursors of samarium nitrate and manganese acetate tetrahydrate in an atomic ratio of Sm:Mn of 1:2 in deionized (DI) water at room temperature.…”

“…Finally, a two‐step calcination temperature (500–1000 °C) is used to transform the amorphous solid into the crystalline SmMn 2 O 5 mullite crystal structure. [ 38,59 ] In this method, the pH of the solution and the calcination temperature critically affect the materials’ crystallinity and catalytic properties. Thampy et al reported a trade‐off between specific surface area and surface atomic composition in SmMn 2 O 5 at high‐solution pH.…”