Synthesis, characterization and catalytic degradation of dye wastewater of Cd-based MOFs materials

WEN Guilin; WANG Jingrui; LIU Daofu; TONG Yue; WANG Yaoyu

doi:10.16152/j.cnki.xdxbzr.2024-02-009

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Synthesis, characterization and catalytic degradation of dye wastewater of Cd-based MOFs materials

更新时间：2024-04-19

- Synthesis, characterization and catalytic degradation of dye wastewater of Cd-based MOFs materials
- Journal of Northwest University (Natural Science Edition) Vol. 54, Issue 2, Pages: 230-239(2024)
- 作者机构：
  
  1.淮南师范学院　化学与材料工程学院，安徽　淮南　232038
  2.西北大学　化学与材料科学学院，陕西　西安　710127
- 作者简介：
- 基金信息：
- DOI：10.16152/j.cnki.xdxbzr.2024-02-009
  CLC： TB34; X131.2
- Published：25 April 2024，
  
  Received：19 September 2023，
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WEN Guilin, WANG Jingrui, LIU Daofu, et al. Synthesis, characterization and catalytic degradation of dye wastewater of Cd-based MOFs materials. [J]. Journal of Northwest University (Natural Science Edition) 54(2):230-239(2024)
DOI：

WEN Guilin, WANG Jingrui, LIU Daofu, et al. Synthesis, characterization and catalytic degradation of dye wastewater of Cd-based MOFs materials. [J]. Journal of Northwest University (Natural Science Edition) 54(2):230-239(2024) DOI： 10.16152/j.cnki.xdxbzr.2024-02-009.

摘要

工业废水处理对于维护生态平衡、实现可持续发展具有重要意义，研究开发新的污水处理剂，实现污染物催化降解是从根本上解决废水问题的有效方案。基于此，从晶体工程原理出发，以选材广泛、结构可调的MOFs材料为研究对象，通过选用亚甲基双羟萘酸(H

pam)和2，5-双(4-吡啶基)-1，3，4-噻二唑(bpt)作为构件，成功制备了一例MOFs材料，即[Cd(bpt)(H

]

·n(pam)·2nH

O (MOF-1)。结构分析和性能表征说明，MOF-1具有一维共价链状和复杂的超分子构型，其合成方法简单、品质好，且形貌较为单一，尺寸为0.5~2 μm；主体框架在310 ℃以下稳定存在并具有较好的化学稳定性，在强酸和中性水溶液中可保持完整形貌不少于60 d和163 d；呈现明亮的绿色荧光，可在较宽温度范围内作为分子发光温度计。催化降解工业染料废水的模拟研究显示，MOF-1材料的禁带宽度

＝2.85 eV，带隙值小，对罗丹明B的脱色率达到了85.94%，可显著降解。因此，MOF-1材料是一种具有较大比较优势的染料污水处理剂。

Abstract

Industrial wastewater treatment is of great significance for maintaining ecological balance and achieving sustainable development. Developing new removal agents with the feature of catalytic degradation of pollutants is an effective solution to the wastewater treatment. To address this

metal-organic frameworks (MOFs) with inherent characteristics of wide material sources and adjustable structures were proposed and demonstrated according to the principle of crystal engineering. Therefore

a MOF of [Cd(bpt)(H

]

·n(pam)·2nH

O (MOF-1) was prepared by using pamoic acid(H

pm) and 2

5-bis (4-pyridyl)-1

4-thiadiazole (bpt) as components.The structural analysis and physico-chemical characterization showed that MOF-1possessed complex supramolecular network with one-dimensional covalent chain

the simple synthesis method

good product quality

and the uniform morphology with the size of about 0.5~ 2 μm. The main framework of MOF-1 was thermostable till 310 ℃. The crystal products owned excellent chemical stability of not less than 60 days and 163 days in strong acid and neutral aqueous solution

respectively. Moreover

MOF-1 displayed bright green fluorescence and could be used as a molecular luminescence thermometer over a wide temperature range.The catalytic degradation of organic dyes performed by MOF-1 in simulated industrial wastewater revealed that the materials had a narrow bandgap width

g=2.85 eV and a large decolorization rate of Rhodamine B with 85.94%. Hence

MOF-1 is a brilliant wastewater treatment agent with greater comparative advantages with lots of known materials.

关键词

MOFs材料晶体结构理化性能染料降解

Keywords

metal-organic frameworkscrystal structurephysico-chemical propertiesdye degradation

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