Issue 6, 2016

Structure, phase transition and negative thermal expansion in ammoniated ZrW2O8

Abstract

In the present work, we have developed an effective way to control the thermal expansion of ZrW2O8 by the insertion of NH3 into the void of the framework structure. Neutron powder diffraction (NPD) and XPS studies reveal that N is bonding to W in the ammoniated ZrW2O8 and retains the original structure with the space group P213. This kind of ammoniation improves the thermal stability, raised the phase transition temperature about 50 K, and weakens the negative thermal expansion (NTE) from −7.8 × 10−6 K−1 to −2.1 × 10−6 K−1. These behaviors account for bonding of NH3 to the neighboring atoms of ZrW2O8, and hinder the rocking motion of the corner shared polyhedral structure.

Graphical abstract: Structure, phase transition and negative thermal expansion in ammoniated ZrW2O8

Supplementary files

Article information

Article type
Research Article
Submitted
28 Jan 2016
Accepted
21 Mar 2016
First published
22 Mar 2016

Inorg. Chem. Front., 2016,3, 856-860

Structure, phase transition and negative thermal expansion in ammoniated ZrW2O8

W. Cao, Q. Huang, Y. Rong, Y. Wang, J. Deng, J. Chen and X. Xing, Inorg. Chem. Front., 2016, 3, 856 DOI: 10.1039/C5QI00292C

To request permission to reproduce material from this article, please go to the Copyright Clearance Center request page.

If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.

If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.

Read more about how to correctly acknowledge RSC content.

Social activity

Spotlight

Advertisements