Free‐Standing CoO‐POM Janus‐like Ultrathin Nanosheets. Issue 22 (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 international edition. Volume 59:Issue 22(2020)
• Page Start: 8497
• Page End: 8501
• Publication Date: 2019-10-21
• Subjects: 2D nanosheets -- emulsions -- Janus structures -- polyoxomolybdates -- styrene epoxidation; Chemistry -- Periodicals; 540
• DOI: 10.1002/anie.201910741
• Languages: English
• ISSNs: 1433-7851

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 : Van der Waals integration of ultrathin Janus‐like 2D heterostructures can also be achieved in a single step through a solution‐based approach. The structural configuration can be simply changed by proper selection of solvents. Such a heteromaterial has tunable properties and can be used as an advanced oxidation catalyst.