IR spectroscopy in catalysis

Generalized molybdenum oxide surface chemical state XPS determination via informed amorphous sample model.

Electronic structure of anode interface with molybdenum oxide buffer layer

Electrochemical oxidation of carbonate esters at the LixNi0.5Mn1.5O4−δ/electrolyte interface results in Ni/Mn dissolution and surface film formation, which negatively affect the electrochemical performance of Li-ion batteries. Ex situ X-ray absorption (XRF/XANES), Raman, and fluorescence spectroscopy, along with imaging of LixNi0.5Mn1.5O4−δ positive and graphite negative electrodes from tested Li-ion batteries, reveal the formation of a variety of MnII/III and NiII complexes with β-diketonate ligands. These metal complexes, which are generated upon anodic oxidation of ethyl and diethyl carbonates at LixNi0.5Mn1.5O4−δ, form a surface film that partially dissolves in the electrolyte. The dissolved MnIII complexes are reduced to their MnII analogues, which are incorporated into the solid electrolyte interphase surface layer at the graphite negative electrode. This work elucidates possible reaction pathways and evaluates their implications for Li+ transport kinetics in Li-ion batteries.

The Formation Mechanism of Fluorescent Metal Complexes at the LixNi0.5Mn1.5O4−δ/Carbonate Ester Electrolyte Interface

α-Alumina-Supported Nickel Catalysts Prepared from Nickel Acetylacetonate: A TPR Study

XPS studies of MoO3/Al2O3 and MoO3/SiO2 systems

Role of the support nature in chemisorption of Ni(acac)2 on the surface of silica and alumina

Synthesis and characterization of molybdenum(VI) oxo-species on the surface of fumed alumina and silica

The work contains the results of UV-VIS and XPS study of WO3 phase deposited at the surface of aerosil by hydrolysis of WCl6. Results show that the overlayer is heterogeneous and consists of a very thin phase which contains interacting tungsten and silicon polyhedra as well as a phase of bulk WO3.

A structure and chemical state of WO3-overlayer deposited on aerosil

Study of chemisorption of chromium oxychloride on surface of pyrogenic silica by IR spectroscopy

Yu. V. Plyuto

Papers

XPS studies of MoO3/Al2O3 and MoO3/SiO2 systems

Role of the support nature in chemisorption of Ni(acac)2 on the surface of silica and alumina

Synthesis and characterization of molybdenum(VI) oxo-species on the surface of fumed alumina and silica

A structure and chemical state of WO3-overlayer deposited on aerosil

Study of chemisorption of chromium oxychloride on surface of pyrogenic silica by IR spectroscopy