Issue 15, 2018

Zeolite Y microspheres with perpendicular mesochannels and metal@Y heterostructures for catalytic and SERS applications

Abstract

The control over particle shape and internal architecture offers promise to better realize catalytic activity and selectivity through structural optimization but remains a challenge for crystalline zeolite frameworks. This work describes a facile one-pot strategy to synthesize uniform zeolite Y microspheres through epitaxial hydrogen bonding and entropic hydrophobic interactions using simple mono-alcohols as zeolite growth modifiers with judicious adjustment of synthesis parameters. The internal architecture can be fine-tuned by the co-presence of L-carnitine which creates hidden defects. Unprecedented wheel-like mesoporous channels are created within the microspheres by acid attack of the induced weak points. Moreover, the combination of zeolite Y microspheres with other materials is expected to impart additional properties due to the hybrid nature of the resulting nanocomposites and the perpendicular mesochannels for alleviated diffusion. As demonstrated, Pd2+-exchanged microspheres exhibit remarkably enhanced catalytic activity and recyclability for C–C coupling reactions, and metal doped Ag@Y microspheres allow for fast sensing by surface-enhanced Raman scattering (SERS), achieving orders of magnitude lower detection limit for water soluble molecules.

Graphical abstract: Zeolite Y microspheres with perpendicular mesochannels and metal@Y heterostructures for catalytic and SERS applications

Supplementary files

Article information

Article type
Paper
Submitted
28 Nov 2017
Accepted
22 Feb 2018
First published
23 Feb 2018

J. Mater. Chem. A, 2018,6, 6273-6281

Zeolite Y microspheres with perpendicular mesochannels and metal@Y heterostructures for catalytic and SERS applications

Z. Chen, C. Chen, J. Zhang, G. Zheng, Y. Wang, L. Dong, W. Qian, S. Bai and M. Hong, J. Mater. Chem. A, 2018, 6, 6273 DOI: 10.1039/C7TA10444H

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