Oxidized g‐C3N4 Nanospheres as Catalytically Photoactive Linkers in MOF/g‐C3N4 Composite of Hierarchical Pore Structure,Small

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Oxidized g‐C3N4 Nanospheres as Catalytically Photoactive Linkers in MOF/g‐C3N4 Composite of Hierarchical Pore Structure
Small ( IF 13.0 ) Pub Date : 2016-10-06 , DOI: 10.1002/smll.201601758
Dimitrios A. Giannakoudakis _{1,

2} , Nikolina A. Travlou _{1,

2} , Jeff Secor ₃ , Teresa J. Bandosz _{1,

2}

Affiliation

A unique composite of the copper‐based metal–organic framework (Cu‐benzene tricarboxylic acid (BTC)) with oxidized graphitic carbon nitride nanospheres is synthesized. For comparison, a hybrid material consisting of g‐C₃N₄ and Cu‐BTC is also obtained. Their surface features are analyzed using Fourier transform infrared spectroscopy, X‐ray diffraction, sorption of nitrogen, thermal analysis, scanning electron microscopy, photoluminescence, and diffuse reflectance UV–Vis spectroscopy. The results suggest that the formed nanospheres of oxidized g‐C₃N₄ act as linkers between the copper sites, playing a crucial role in the composite building process. Their incorporation to the Cu‐BTC framework causes the development of new mesoporosity. Remarkable alterations in the optical properties, as a result of the coordination of oxygen containing functional groups of the oxidized graphitic carbon nitride to the copper atoms of the framework, suggest an increase in photoreactivity. On the other hand, for the hybrid material consisting of Cu‐BTC and g‐C₃N₄, the unaltered pore volume and optical properties support the formation of a physical mixture rather than of a composite. The tests on reactive adsorption and detoxification of G‐series organophosphate nerve agent surrogate show the enhanced performance of the composite as catalysts and photocatalyst in visible light.

中文翻译：

氧化g-C3N4纳米球作为MOF / g-C3N4分层孔结构复合物中的催化光敏连接剂

合成了一种独特的铜基金属有机骨架（铜苯三羧酸（BTC））与氧化石墨氮化碳纳米球的复合物。为了进行比较，还获得了由g-C ₃ N ₄和Cu-BTC组成的混合材料。使用傅立叶变换红外光谱，X射线衍射，氮的吸附，热分析，扫描电子显微镜，光致发光和漫反射紫外可见光谱对它们的表面特征进行分析。结果表明形成的氧化g‐C ₃ N ₄纳米球充当铜站点之间的链接者，在复合建筑过程中起着至关重要的作用。它们结合到Cu-BTC框架中导致了新的介孔性的发展。由于氧化的石墨氮化碳的含氧官能团与骨架的铜原子的配位，光学性质发生了显着变化，表明光反应性增加。另一方面，对于由Cu‐BTC和g‐C ₃ N ₄组成的混合材料，未改变的孔体积和光学性质支持物理混合物的形成，而不是复合材料的形成。对G系列有机磷酸神经酰胺替代品的反应性吸附和解毒测试表明，该复合材料在可见光下作为催化剂和光催化剂的性能得到了增强。

更新日期：2016-10-06

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