A template-free synthesis of mesoporous SrTiO3 single crystals

Ji Ping Zhu; Xue Feng Wu; Xiao Hua Yang; Peng Fei Liu; Sheng Dai; Hua Gui Yang

doi:10.1039/D1CE00484K

A template-free synthesis of mesoporous SrTiO₃ single crystals†

Ji Ping Zhu,‡^a Xue Feng Wu,‡^a Xiao Hua Yang,^a Peng Fei Liu,

^a Sheng Dai

*^b and Hua Gui Yang

*^a

Author affiliations

* Corresponding authors

^a Key Laboratory for Ultrafine Materials of Ministry of Education, Shanghai Engineering Research Center of Hierarchical Nanomaterials, School of Materials Science and Engineering, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, China
E-mail: hgyang@ecust.edu.cn

^b Key Laboratory for Advanced Materials and Feringa Nobel Prize Scientist Joint Research Center, Institute of Fine Chemicals, School of Chemistry and Molecular Engineering, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, China
E-mail: shengdai@ecust.edu.cn

Abstract

Mesoporous single crystals have attracted considerable attention owing to their wide applications in (photo)catalysis, photovoltaics, and numerous other electrical energy conversion and storage technologies. Here, by using low-valent Ti³⁺ precursors, we have successfully synthesized well-defined mesoporous single-crystal strontium titanate (MSC SrTiO₃) without a template via a facile hydrothermal method. The BET surface area and average pore diameter of MSC SrTiO₃ are 18.6 m² g⁻¹ and 22 nm, respectively. Moreover, the as-synthesized MSC SrTiO₃ features abundant oxygen vacancies. By using time-dependent structural and morphological characterizations, a hypothetical crystal growth mechanism was proposed.

This article is part of the themed collection: Crystal Growth

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Article information

DOI: https://doi.org/10.1039/D1CE00484K
Article type: Paper
Submitted: 13 Apr 2021
Accepted: 13 Jul 2021
First published: 30 Jul 2021

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CrystEngComm, 2021,23, 5595-5600

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A template-free synthesis of mesoporous SrTiO₃ single crystals

J. P. Zhu, X. F. Wu, X. H. Yang, P. F. Liu, S. Dai and H. G. Yang, CrystEngComm, 2021, 23, 5595 DOI: 10.1039/D1CE00484K

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