Rational Synthesis of Amorphous Iron‐Nickel Phosphonates for Highly Efficient Photocatalytic Water Oxidation with Almost 100 % Yield. (2nd December 2019)

• Record Type: Journal Article
• Authors: Xing, Weinan; Yin, Shengming; Tu, Wenguang; Liu, Guanyu; Wu, Shuyang; Wang, Haojing; Kraft, Markus; Wu, Guangyu; Xu, Rong
• Is Part Of: Angewandte Chemie. Volume 132:Number 3(2020)
• Page Start: 1187
• Page End: 1191
• Publication Date: 2019-12-02
• Subjects: Eisen -- Nickel -- Phosphonate -- Photokatalyse -- Wasseroxidation; Chemistry -- Periodicals; 540
• DOI: 10.1002/ange.201912552
• Languages: English
• ISSNs: 0044-8249

Abstract

Abstract: A simple solvent ligation effect was successfully used to disrupt the growth of a model compound, Fe[(OH)(O3 P(CH2 )2 CO2 H)]⋅H2 O (MIL‐37), into an extended 2D structure by replacing water with dimethylformamide (DMF) as the solvent during the synthesis. Owing to the lack of −OH group, which provides the corner‐sharing (binding) oxygen atoms for the octahedra, an amorphous and porous structure is formed. When Fe 3+ is partially replaced by Ni 2+, the amorphous structure remains and the resultant binary metal catalyst displays excellent photocatalytic oxygen evolution activity with almost 100 % yield achieved under visible light irradiation using [Ru(bpy)3 ] 2+ as the photosensitizer. This study opens up new possibilities of using the simple solvent effect to synthesize high surface area metal phosphonates for catalytic and other applications. Abstract : DMF statt Wasser : Ein einfacher und rationaler Ansatz ergibt amorphe Eisennickelphosphonate. Diese ermöglichen eine hocheffiziente photokatalytische Wasseroxidation in fast 100 % Ausbeute, indem OH‐Gruppen unter Nutzung des Lösungsmitteleffekts begrenzt werden.