Synthesis and Photocatalytic Properties of a New Heteropolyoxoniobate Compound: K10[Nb2O2(H2O)2][SiNb12O40]·12H2O
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https://figshare.com/articles/dataset/Synthesis_and_Photocatalytic_Properties_of_a_New_Heteropolyoxoniobate_Compound_K_sub_10_sub_Nb_sub_2_sub_O_sub_2_sub_H_sub_2_sub_O_sub_2_sub_SiNb_sub_12_sub_O_sub_40_sub_12H_sub_2_sub_O/2654110
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The synthesis and photocatalytic properties of a heteropolyoxoniobate, K10[Nb2O2(H2O)2][SiNb12O40]·12H2O (1), are reported, revealing an important role of Zr4+ additives in the crystallization. Compound 1 exhibits overall photocatalytic water splitting activity, and its photocatalytic activity is significantly higher than that of Na10[Nb2O2][SiNb12O40]·xH2O (2). Fluorescence lifetime measurements suggest that the enhanced photocatalytic activity of 1 likely results from a larger yield of longer-lived charge trapping states in 1 due to the coordination of one water molecule to the bridging Nb5+, leading to highly unsymmetrical seven-coordinated Nb5+ sites.
创建时间：
2016-02-23
