Synthesis and Crystal Structure of Rutile‐type ScTa2O5N. Issue 14 (5th September 2014)

• Record Type: Journal Article
• Authors: Cosgun, Sevilay; Rohloff, Martin; Göbel, Caren; Gernert, Ulrich; Fischer, Anna; Lerch, Martin
• Is Part Of: Zeitschrift für anorganische und allgemeine Chemie. Volume 640:Issue 14(2014)
• Page Start: 2771
• Page End: 2775
• Publication Date: 2014-09-05
• Subjects: Chemistry, Inorganic -- Periodicals; Chemistry -- Periodicals; 540
• DOI: 10.1002/zaac.201400325
• Languages: English
• ISSNs: 0044-2313

Abstract

<abstract abstract-type="main" xml:lang="en"> <title>Abstract</title> <p>A new phase in the system Sc‐Ta‐O‐N was synthesized by reaction of an amorphous oxide precursor with a gaseous NH₃/O₂ mixture at 800 °C. Crystal structure determination was performed using X‐ray powder data. ScTa₂O₅N crystallizes in the tetragonal space group <italic>P</italic>4₂/<italic>mnm</italic> (rutile‐type structure) and exhibits a brilliant yellow color (optical bandgap: 2.67 eV), making it a promising material for photocatalytical water splitting. Further investigation methods (SEM, TEM, and N₂‐physisorption) were applied for more detailed characterization of the new phase. Unfortunately, the new compound could not be prepared as pure phase. So far a phase purity of ca. 90 % was the best result.</p> </abstract>