Abstract
Increasing the structural stability towards aqueous conditions is a great challenge for titanium-oxo clusters (TOCs). In this study, two lanthanide-containing titanium-oxo clusters formulated as [Er2Ti8(μ3-O)8(μ2-O)2(μ2-OH)2(BA)16] and [Yb2Ti8(μ3-O)8(μ2-O)2(μ2-OH)2(BA)16] (BA = benzoate) were synthesized, which possess ultrahigh stability in aqueous solutions with a wide pH range for at least 1 week. The structures of the clusters were characterized by single-crystal X-ray diffraction analysis. It reveals that the high structural stability of the clusters can be attributed to the cage-like cluster core that is fully coordinated by benzoate ligands. The photoelectrochemical and photocatalytic properties of the clusters were investigated. The clusters exhibit favorable performance for the photocatalytic dye degradation and photocatalytic oxidative desulfurization.
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