Heterogeneous Growth of UiO-66-NH 2 on Oxidized Single-Walled Carbon Nanotubes to Form “Beads-on-a-String” Composites
Heterogeneous Growth of UiO-66-NH 2 on Oxidized Single-Walled Carbon Nanotubes to Form “Beads-on-a-String” Composites
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UiO-66-NH 2 在氧化单壁碳纳米管上的异质生长形成“串珠”复合材料
DOI：
10.1021/acsami.0c21509
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发表时间：
2021
影响因子：
9.5
通讯作者：
Star, Alexander
中科院分区：
文献类型：
--
作者：
Zeng, Zidao;Sorescu, Dan C.;White, David L.;Hwang, Sean I.;Shao, Wenting;He, Xiaoyun;Schulte, Zachary M.;Rosi, Nathaniel L.;Star, Alexander
在这项工作中，我们展示了一个简单的合成UiO-66-NH 2金属有机框架（MOF）/氧化单壁碳纳米管（ox-SWCNTs）复合材料在室温下。乙酸（HAc）被用作调制器来操纵这些复合材料中的MOF的形态。利用氧化锆簇（Zr）与2-氨基对苯二甲酸酯（ATA）的1：1.42的比例和乙酸调节剂，我们在CNT的侧壁上实现了主要的异质MOF生长。通过DFT计算研究ox-SWCNTs和MOF前体之间的相互作用，有助于理解这些复合材料的生长机制。合成的复合材料结合了联合收割机的MOF和SWCNT的导电性的微孔。气体传感测试表明，与单独的氧化单壁碳纳米管（ox-SWCNT）相比，U10 -66-NH 2/ox-SWCNT混合物对用甲基膦酸二甲酯（DMMP）蒸气饱和的干燥空气的响应更高。
In this work, we demonstrate a facile synthesis of UiO-66-NH2metal–organic framework (MOF)/oxidized single-walled carbon nanotubes (ox-SWCNTs) composite at room temperature. Acetic acid (HAc) was used as a modulator to manipulate the morphology of the MOF in these composites. With a zirconium oxide cluster (Zr) to 2-aminoteraphthalate linker (ATA) 1:1.42 ratio and acetic acid modulator, we achieved predominately heterogeneous MOF growth on the sidewalls of CNTs. Understanding the growth mechanism of these composites was facilitated by conducting DFT calculations to investigate the interactions between ox-SWCNTs and the MOF precursors. The synthesized composites combine both microporosity of the MOF and electrical conductivity of the SWCNTs. Gas sensing tests demonstrated higher response for UiO-66-NH2/ox-SWCNT hybrid toward dry air saturated with dimethyl methylphosphonate (DMMP) vapor compared to oxidized single-walled carbon nanotubes (ox-SWCNTs) alone.