Photoinduced Defect and Surface Chemistry of Niobium Tellurium Oxides ANbTeO6 (A = K, Rb, Cs) with Defect-Pyrochlore Structure.,Inorganic Chemistry

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Photoinduced Defect and Surface Chemistry of Niobium Tellurium Oxides ANbTeO6 (A = K, Rb, Cs) with Defect-Pyrochlore Structure.
Inorganic Chemistry ( IF 4.3 ) Pub Date : 2020-05-28 , DOI: 10.1021/acs.inorgchem.0c00811
Morten Weiss ₁ , Benedikt Wirth ₁ , Roland Marschall ₁

Affiliation

The niobium tellurium oxides ANbTeO₆ with varying A cations (A = K, Rb, Cs) and defect-pyrochlore crystal structure were used to investigate the effect of A on crystal-structure deformation and defect-chemistry. We show that the light absorption of these compounds in visible light is due to defects and not the effect of a low band gap. Using the materials in photocatalytic hydrogen generation, the prevailing defects and the surface composition change significantly during photocatalytic hydrogen evolution.

中文翻译：

具有缺陷-烧绿石结构的碲化铌氧化物ANbTeO6（A = K，Rb，Cs）的光致缺陷和表面化学。

用具有不同A阳离子（A = K，Rb，Cs）和缺陷烧绿石晶体结构的铌碲氧化物ANbTeO ₆来研究A对晶体结构变形和缺陷化学的影响。我们表明这些化合物在可见光中的光吸收是由于缺陷而不是低带隙的影响。在光催化氢生成中使用这些材料，在光催化氢生成过程中，主要缺陷和表面组成会发生显着变化。

更新日期：2020-05-28

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