Issue 35, 2019

A series of silver doped butterfly-like Ti8Ag2 clusters with two Ag ions panelled on a Ti8 surface

Abstract

Silver doped TiO2 (Ag–TiO2) materials show high activity and good stability in photocatalysis, but the mechanism could not be illustrated clearly due to their imprecise and inhomogeneous characteristics. Ag-doped titanium-oxo clusters (Ag-TOCs) with an exact crystal structure, which are rarely reported, are beneficial for further understanding structure–property relationships. Herein, six new Ag-TOCs with a butterfly-like Ti8Ag2 core have been synthesized through facile solvothermal reactions, in which two Ag ions are successfully linked to the surface of the Ti8 core. Of interest, the Ti6 unit of the Ti8Ag2 core is similar to that found in the anatase structure and may be a promising model for Ag–TiO2 materials. The band gaps of these Ag-TOCs show different values mainly affected by different ligands. DFT calculations revealed that the lowest energy bands of Ag-TOCs are attributed to the Ag-to-TiO core charge transfer bands. Additionally, all Ag-TOCs exhibit good photoelectric response and high photodegradation activity towards organic dyes.

Graphical abstract: A series of silver doped butterfly-like Ti8Ag2 clusters with two Ag ions panelled on a Ti8 surface

Supplementary files

Article information

Article type
Paper
Submitted
14 Jun 2019
Accepted
02 Aug 2019
First published
07 Aug 2019

Dalton Trans., 2019,48, 13423-13429

A series of silver doped butterfly-like Ti8Ag2 clusters with two Ag ions panelled on a Ti8 surface

Y. Yu, Y. Guo, Y. Zhang, M. Liu, Y. Feng, C. Geng and X. Zhang, Dalton Trans., 2019, 48, 13423 DOI: 10.1039/C9DT02508A

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