Two Types of 2D Layered Iodoargentates Based on Trimeric [Ag3I7] Secondary Building Units and Hexameric [Ag6I12] Ternary Building Units: Syntheses, Crystal Structures, and Efficient Visible Light Resp

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• 作者：Xiao-Wu Lei ; Cheng-Yang Yue ; Jian-Qiang Zhao ; Yong-Fang Han ; Jiang-Tao Yang ; Rong-Rong Meng ; Chuan-Sheng Gao ; Hao Ding ; Chun-Yan Wang ; Wan-Dong Chen ; Mao-Chun Hong
• 刊名：Inorganic Chemistry
• 出版年：2015
• 出版时间：November 16, 2015
• 年：2015
• 卷：54
• 期：22
• 页码：10593-10603
• 全文大小：666K
• ISSN：1520-510X

文摘

With mixed transition-metal-complex, alkali-metal, or organic cations as structure-directing agents, a series of novel two-dimensional (2D) layered inorganic鈥搊rganic hybrid iodoargentates, namely, K_x[TM(2,2-bipy)₃]₂Ag₆I₁₁ (TM = Mn (1), Fe (2), Co (3), Ni (4), Zn (5); x = 0.89鈥?) and [(Ni(2,2-bipy)₃][H-2,2-bipy]Ag₃I₆ (6), have been solvothermally synthesized and structurally characterized. All the title compounds feature 2D microporous layers composed by [Ag₃I₇] secondary building units based on AgI₄ tetrahedra. Differently, the [Ag₃I₇] trimers are directly interconnected via corner-sharing to form the 2D [Ag₆I₁₁]^{5鈥?/sup> layer in compounds 1鈥?b>5, whereas two neighboring [Ag₃I₇] trimers are initially condensed into a hexameric [Ag₆I₁₂] ternary building unit as a new node, which further self-assembles, leading to the 2D [Ag₆I₁₀]4鈥?/sup> layer in compound 6. The UV鈥搗is diffuse-reflectance measurements reveal that all the compounds possess proper semiconductor behaviors with tunable band gaps of 1.66鈥?.75 eV, which lead to highly efficient photocatalytic degradation activities over organic pollutants under visible light irradiation compared to that of N-dotted P25. Interestingly, all the samples feature distinct photodegradative speeds at the same reaction conditions, and compound 1 features the highest photocatalytic activity among the title phases. The luminescence properties, band structures, and thermal stabilities were also studied.}