Synthesis and characterization of a new monometallic layered double hydroxide using manganese. Issue 31 (21st July 2022)

• Record Type: Journal Article
• Authors: Cornu, Damien; Coustel, Romain; Renaudin, Guillaume; Rogez, Guillaume; Renard, Aurélien; Durand, Pierrick; Carteret, Cédric; Ruby, Christian
• Is Part Of: Dalton transactions. Volume 51:Issue 31(2022)
• Page Start: 11787
• Page End: 11796
• Publication Date: 2022-07-21
• Subjects: Chemistry, Inorganic -- Periodicals; Chemistry, Physical and theoretical -- Periodicals; Chemistry, Inorganic -- Periodicals; 546.05
• DOI: 10.1039/d2dt01835g
• Languages: English
• ISSNs: 1477-9226

Abstract

Abstract : This article reports for the first time the synthesis of an LDH using only manganese as the divalent and trivalent metallic ion. Abstract : This article reports for the first time the synthesis of an LDH using only manganese as the divalent and trivalent metallic ion. Analysis of the pH, redox potential, and chemical composition during the oxidation of a manganese basic salt using persulfate indicates the oxidation of 1/3 of the initial Mn II ions, in agreement with the paramagnetic structure and XPS analysis. Infrared, Raman spectra and thermogravimetric analysis results were similar to the ones obtained with Fe-LDH also known as green rust. X-Ray diffractograms and Rietveld refinement were used to determine the structure of this solid. Thermodynamic considerations predict that this solid could reduce nitrate into gaseous nitrogen without further reduction to ammonium or ammonia unlike what is observed for Fe-LDH.