Heterometallic Lanthanide–Titanium Oxo Clusters: A New Family of Water Oxidation Catalysts

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• 作者：Dong-Fei Lu ; Xiang-Jian KongTong-Bu Lu ; La-Sheng Long ; Lan-Sun Zheng
• 刊名：Inorganic Chemistry
• 出版年：2017
• 出版时间：February 6, 2017
• 年：2017
• 卷：56
• 期：3
• 页码：1057-1060
• 全文大小：350K
• ISSN：1520-510X

文摘

We report the synthesis and photoelectrochemical activity of three lanthanide–titanium oxo clusters (LTOCs), formulated as [Ln₈Ti₁₀(μ₃-O)₁₄(tbba)₃₄(Ac)₂(H₂O)₄(THF)₂]·2Htbba [Ln = Eu (1), Sm (2), and Gd (3); Htbba = 4-tert-butylbenzoic acid; Ac^– = acetate]. These stable compounds are efficient catalysts of photoelectrochemical water oxidation with high turnover numbers (7581.0 for 1, 5172.4 for 2, and 5413.0 for 3) and high turnover frequencies (2527.0 for 1, 1724.1 for 2, and 1804.0 for 3). The differences in the photoelectrochemical activity among these three compounds may be related to the differences in their band gaps. This work shows that the heterometallic LTOCs provide a tunable platform for the design of highly effective water oxidation catalysts.