一个双功能三维Zn (II) 金属有机框架,具有强烈的发光和吸附性Cr (VI) 特性
Yufeng Chen1,2, Shixiong Li1,2, Yubing Liu1
1School of Mechanical and Resource Engineering, Wuzhou University, Guangxi, Wuzhou 543003, PR China.
ACS omega
|April 29, 2024
概括
一种新的金属有机框架 (3D-Zn-MOF) 被合成并转化为纳米材料 (3D-N-Zn-MOF). 这种材料表现出强烈的发光和高效的Cr6吸附,表明其具有双功能潜力.
科学领域:
- 材料科学 材料科学 材料科学
- 协调化学 协调化学
- 纳米技术纳米技术
背景情况:
- 金属有机框架 (MOF) 为各种应用提供可调节的特性.
- 开发具有增强发光和吸附能力的MOF具有显著的兴趣.
- 使用混合带的双核 (II) MOFs的合成提供了独特的结构可能性.
研究的目的:
- 为了合成和描述一个新的三维双核Zn(II) 金属有机框架 (3D-Zn-MOF).
- 从合成的MOF中制备纳米材料 (3D-N-Zn-MOF),并评估它们的特性.
- 为了研究3D-N-Zn-MOF的发光和Cr (VI) 吸附性能.
主要方法:
- 使用3-amino-1,2,4-triazole (Hatz) 和铁酸 (H2pta) 的混合联体Zn(II) MOF的热水合成.
- 通过晶体MOF的细胞分裂来制备纳米材料 (3D-N-Zn-MOF).
- 光特性 (光寿命,量子产量) 和Cr (VI) 吸附能力的表征.
- 对Cr (VI) 吸附过程的热力学分析.
主要成果:
- 一种新的3D双核Zn(II) MOF,{[Zn2(atz) 2(pta) ]·3H2O}n (3D-Zn-MOF),已成功合成了两种孔隙类型.
- 获得了大约100nm大小的纳米材料 (3D-N-Zn-MOF).
- 3D-N-Zn-MOF表现出强烈的发光,具有显著的红移和3.02%的光量子产量.
- 在最佳条件下,Cr (VI) 的最大实验吸附能力达到125.52 mg/g.
- 发现Cr(VI) 吸附是一种自发的和外热的过程.
结论:
- 合成的3D-N-Zn-MOF表现出极好的发光和Cr (VI) 吸附能力.
- 该材料的特性归因于连接体结构,连接体到金属的电荷转移,以及其纳米结构.
- 3D-N-Zn-MOF是一种有前途的双功能材料,可用于发光和环境修复的应用.
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