Crystal Chemistry and Photocatalytic Properties of RE₄S₄Te₃(RE = Gd, Ho, Er, Tm): Experimental and Theoretical Investigations

Yang Chi, Liang-Zhen Rong, Nian-Tzu Suen, Huai-Guo Xue, and Sheng-Ping Guo*

School of Chemistry and Chemical Engineering, Yangzhou University

Abstract:Reported are the synthesis and structural characterization of a new series of ternary rare-earth mix-chalcogenides RE₄S₄Te₃(RE = Gd, Ho, Er, Tm) that have been obtained from high-temperature solid state reactions. These compounds crystallize in Ho₄S₄Te_2.68structure types with monoclinicC2/mand/or orthorhombicImmmspace groups. The space group variation within this series is due to the position disorder along the Te plane (Te to TeA and TeB). The structural relationship and change between these two space groups are analyzed. It is realized that these compounds are all photocatalytic active under simulated sunlight. The trend of their photocatalytic activities and photocurrent responses is well-explained by using theoretical calculation as well as dipole moment analysis.

Inorganic Chemistry, 2018, 57, 5343-5351.IF = 4.857,自然指数期刊

链接：https://pubs.acs.org/doi/abs/10.1021/acs.inorgchem.8b00344