Free‐Standing CoO‐POM Janus‐like Ultrathin Nanosheets. (21st October 2019)

• Record Type: Journal Article
• Authors: Akram, Bilal; Shi, Wenxiong; Zhang, Hao; Ullah, Shaheed; Khurram, Muhammad; Wang, Xun
• Is Part Of: Angewandte Chemie. Volume 132:Number 22(2020)
• Page Start: 8575
• Page End: 8579
• Publication Date: 2019-10-21
• Subjects: 2D-Nanoblättchen -- Emulsionen -- Janusstrukturen -- Polyoxomolybdate -- Styrolepoxidierung; Chemistry -- Periodicals; 540
• DOI: 10.1002/ange.201910741
• Languages: English
• ISSNs: 0044-8249

Abstract

Abstract: A single‐step solution‐based strategy is used to obtain 2D Janus‐like free‐standing ultrathin nanosheets build from two structurally unrelated species, that is, polyoxomolybdate (POM) and CoO. A controlled 2D‐to‐1D morphological transition was achieved by judiciously adjusting the solvent choice. These POM‐CoO heterostructures can behave as an ideal catalyst for the epoxidation of styrene. Benefiting from their amphiphilic nature, these 2D POM‐CoO nanosheets have also been used as surfactant to emulsify immiscible solvents. It is anticipated that structurally diverse polyoxometalates will offer promise as design elements for variety of structurally and compositionally tunable van der Waals integrated heteromaterials having a broad range applications. Abstract : Lösungsorientierter Ansatz : Eine Van‐der‐Waals‐Integration ultradünner janusartiger 2D‐Heterostrukturen lässt sich in einer Stufe durch eine lösungsbasierte Methode erreichen. Die Strukturkonfiguration kann leicht durch passende Wahl der Lösungsmittel geändert werden. Ein derartiges Heteromaterial hat abstimmbare Eigenschaften und ist als fortgeschrittener Oxidationskatalysator nutzbar.