Nanoscale Control of Homoepitaxial Growth on a Two‐Dimensional Zeolite. Issue 2 (9th December 2016)

• Record Type: Journal Article
• Authors: Shete, Meera; Kumar, Manjesh; Kim, Donghun; Rangnekar, Neel; Xu, Dandan; Topuz, Berna; Agrawal, Kumar Varoon; Karapetrova, Evguenia; Stottrup, Benjamin; Al‐Thabaiti, Shaeel; Basahel, Sulaiman; Narasimharao, Katabathini; Rimer, Jeffrey D.; Tsapatsis, Michael
• Is Part Of: Angewandte Chemie international edition. Volume 56:Issue 2(2017)
• Page Start: 535
• Page End: 539
• Publication Date: 2016-12-09
• Subjects: two-dimensional materials -- crystal engineering -- crystal growth -- nanotechnology -- zeolites; Chemistry -- Periodicals; 540
• DOI: 10.1002/anie.201607063
• Languages: English
• ISSNs: 1433-7851

Abstract

Abstract: Nanoscale crystal growth control is crucial for tailoring two‐dimensional (2D) zeolites (crystallites with thickness less than two unit cells) and thicker zeolite nanosheets for applications in separation membranes and as hierarchical catalysts. However, methods to control zeolite crystal growth with nanometer precision are still in their infancy. Herein, we report solution‐based growth conditions leading to anisotropic epitaxial growth of 2D zeolites with rates as low as few nanometers per day. Contributions from misoriented surface nucleation and rotational intergrowths are eliminated. Growth monitoring at the single‐unit‐cell level reveals novel nanoscale crystal‐growth phenomena associated with the lateral size and surface curvature of 2D zeolites. Abstract : Growing up : Anisotropic epitaxial growth of two‐dimensional zeolites with nanometer precision is possible, and allows the nanoscale crystal‐growth phenomena associated with the lateral size and surface curvature of 2D zeolites to be revealed. It enables the microstructure of thin films and hierarchical catalysts to be manipulated at a scale that approaches single‐unit‐cell dimensions.