Tripyridine‐Derivative‐Derived Semiconducting Iodo‐Argentate/Cuprate Hybrids with Excellent Visible‐Light‐Induced Photocatalytic Performance,Chemistry - An Asian Journal

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Tripyridine‐Derivative‐Derived Semiconducting Iodo‐Argentate/Cuprate Hybrids with Excellent Visible‐Light‐Induced Photocatalytic Performance
Chemistry - An Asian Journal ( IF 3.5 ) Pub Date : 2018-12-21 , DOI: 10.1002/asia.201801555
Qi Wei ₁ , Bang-Di Ge ₁ , Jing Zhang ₂ , Ai-Huan Sun ₁ , Jin-Hua Li ₁ , Song-De Han ₁ , Guo-Ming Wang ₁

Affiliation

Through regulating the pH values, a series of iodo‐argentate/cuprate hybrids, [Me₃(4‐TPT)]₄[Ag₆I₁₈] (1, Me₃(4‐TPT)=N,N′,N′′‐trimethyl‐2,4,6‐tris(4‐pyridyl)‐1,3,5‐triazine), [Me₃(4‐TPT)][M₅I₈] (M=Ag/2, Cu/2 a), [Me₃(3‐TPT)][M₅I₈] (Me₃(3‐TPT)=N,N′,N′′‐trimethyl‐2,4,6‐tris(3‐pyridyl)‐1,3,5‐triazine, M=Ag/3, Cu/4), which exhibit adjustable structural variations with different dimensional structures, have been obtained under solvothermal conditions. They are directed by two types of in situ N‐alkylation TPT‐derivatives (Me₃(4‐TPT) for 1/2/2 a and Me₃(3‐TPT) for 3/4) and represent the isolated units (1), 1D polymeric chain (4), 2D layered structures (2/2 a, 3) based on diverse metal iodide clusters. These compounds possess reducing band gaps as compared with the bulk β‐AgI and CuI and belong to potential semiconductor materials. Iodocuprates feature highly efficient photocatalytic activity in the sunlight‐induced degradation of organic dyes. The detailed study on the possible photocatalytic mechanism, including radical trapping tests and theoretical calculations, reveals that the N‐alkylation TPT moieties contribute to the narrow semiconducting behavior and effectively inhibit the recombination of photogenerated electron‐hole pairs, which result in an excellent visible‐light‐induced photocatalytic performance.

中文翻译：

具有出色的可见光诱导光催化性能的三吡啶-衍生物衍生的半导体-碘-精氨酸/铜酸盐杂化物

通过调节pH值，可得到一系列碘代-银/铜酸盐杂化物[Me ₃（4-TPT）] ₄ [Ag ₆ I ₁₈ ]（1，Me ₃（4-TPT）= N，N '，N ' '-三甲基-2,4,6-三（4-吡啶基）-1,3,5-三嗪），[Me ₃（4-TPT）] [M ₅ I ₈ ]（M = Ag / 2，Cu / 2 a），[Me ₃（3-TPT）] [M ₅ I ₈ ]（Me ₃（3-TPT）= N，N '，N ''-三甲基-2,4,6-tris（3-吡啶基））-1,3,5-三嗪，M = Ag / 3，Cu / 4在溶剂热条件下获得了具有不同尺寸结构的可调节结构变化的）。它们由两种类型的原位N-烷基化TPT-衍生物的定向（ME ₃（4- TPT）为1 / 2 / 2和Me ₃（3-TPT）为3 / 4），并且代表该分离的单元（1），一维聚合物链（4），二维层状结构（2 / 2a，3）基于各种金属碘化物簇。与大量的β-AgI和CuI相比，这些化合物的带隙减小，属于潜在的半导体材料。碘铜酸盐在日光诱导的有机染料降解中具有高效的光催化活性。对可能的光催化机理的详细研究（包括自由基捕获测试和理论计算）表明，N-烷基化TPT部分有助于狭窄的半导体行为并有效抑制光生电子-空穴对的重组，从而产生出色的可见光光诱导的光催化性能。

更新日期：2018-12-21

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