Issue 8, 2021

Two-step hydrothermal synthesis of (NH4)xWO3 hollow spherical and hierarchical structures

Abstract

Hollow spherical and hierarchical structures of ammonium tungsten bronze ((NH4)xWO3) were prepared via a two-step hydrothermal method. It was found that the (NH4)xWO3 hollow spherical structure without adding citric acid, while the (NH4)xWO3 hierarchical structure formed when adding citric acid at the second hydrothermal step. Both structures consist of nanorods and nanoparticles with connected frames. The possible formation mechanism of these two (NH4)xWO3 structures was proposed and discussed. The current approach is simple, and can also be applied for the synthesis of other tungsten bronze materials with novel structures.

Graphical abstract: Two-step hydrothermal synthesis of (NH4)xWO3 hollow spherical and hierarchical structures

Article information

Article type
Communication
Submitted
21 Dec. 2020
Accepted
25 Janv. 2021
First published
26 Janv. 2021

CrystEngComm, 2021,23, 1700-1703

Two-step hydrothermal synthesis of (NH4)xWO3 hollow spherical and hierarchical structures

P. Ou, X. Su, Y. Zeng, F. Zhang, J. Liu, C. Wang, S. Yang, H. Wang, Y. Wen and H. Zhao, CrystEngComm, 2021, 23, 1700 DOI: 10.1039/D0CE01838D

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