Synthesis of acid-promoted UiO-66 and its degradation rate for treatment of cephalosporin in wastewater

MA Yun

doi:10.13471/j.cnki.acta.snus.2021C015

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Synthesis of acid-promoted UiO-66 and its degradation rate for treatment of cephalosporin in wastewater

Research articles | 更新时间：2023-11-01

- Synthesis of acid-promoted UiO-66 and its degradation rate for treatment of cephalosporin in wastewater
- Acta Scientiarum Naturalium Universitatis Sunyatseni Vol. 61, Issue 4, Pages: 79-84(2022)
- 作者机构：
  
  安庆医药高等专科学校药学院，安徽安庆 246052
- 作者简介：
- 基金信息：
- DOI：10.13471/j.cnki.acta.snus.2021C015
  CLC： O643
- Published：25 July 2022，
  
  Published Online：12 November 2021，
  
  Received：07 July 2021，
  
  Accepted：09 September 2021
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马允.酸促UiO-66的合成及其对废水中头孢抗生素的处理效率[J].中山大学学报(自然科学版),2022,61(04):79-84.

MA Yun.Synthesis of acid-promoted UiO-66 and its degradation rate for treatment of cephalosporin in wastewater[J].Acta Scientiarum Naturalium Universitatis Sunyatseni,2022,61(04):79-84.
马允.酸促UiO-66的合成及其对废水中头孢抗生素的处理效率[J].中山大学学报(自然科学版),2022,61(04):79-84. DOI： 10.13471/j.cnki.acta.snus.2021C015.

MA Yun.Synthesis of acid-promoted UiO-66 and its degradation rate for treatment of cephalosporin in wastewater[J].Acta Scientiarum Naturalium Universitatis Sunyatseni,2022,61(04):79-84. DOI： 10.13471/j.cnki.acta.snus.2021C015.

摘要

UiO-66的合成中通常加入酸性物质作为酸度调节剂。以ZrCl

为前驱体、对苯二甲酸为有机配体、

，

-二甲基甲酰胺为溶剂，采用水热法制备了UiO-66，通过向前驱体溶液中加入不同体积的HAc考察酸度调节剂对UiO-66结构和性能的影响。使用热重、红外光谱、X射线衍射、扫描电镜、透射电镜、氮吸附脱附对样品进行表征分析，并以头孢曲松钠为降解污染物，考察了UiO-66可见光催化降解头孢抗生素的效率。结果显示，添加HAc的UiO-66结构更规整，在可见光区域具有更强的吸收能力。未添加HAc时，UiO-66呈小颗粒圆形，比表面积为695.435 8 m²/g，可见光照射120 min对头孢曲松钠的降解率为29.46%。随着HAc添加量的增大，UiO-66的粒径逐渐增加，当

（ZrCl

）∶

（H

BDC）∶

（HAc） = 1∶1∶200时，UiO-66具有更规则的八面体结构，其比表面积高达1 270.821 1 m²/g，可见光照射120 min对头孢曲松钠的降解率为50.77%。

Abstract

Acidic substances are usually added to the synthesis of UiO-66 as acidity regulators. UiO-66 was prepared by hydrothermal method using zirconium chloride as its precursor， terephthalic acid as organic ligand and

，

- dimethylformamide as a solvent. The effect of acidity regulator on the structure and properties of UiO-66 was investigated by adding different volumes of acetic acid into the precursor solution. The samples were characterized and analyzed by thermogravimetric analysis， infrared spectroscopy， X-ray diffraction， scanning electron microscopy， transmission electron microscopy， and nitrogen adsorption and desorption. The visible light catalytic degradation efficiency of UiO-66 was investigated using ceftriaxone sodium as the degradation pollutant. The results showed that the structure of UiO-66 added with acetic acid was more orderly and had stronger absorptive capacity in visible light region. When no acetic acid was added， UiO-66 was a small circular particle with a specific surface area of 695.435 8 m²/g. The degradation rate of ceftriaxone sodium by visible light irradiation for 120 min was 29.46%. With the increase of acetic acid content， the particle size of UiO-66 gradually increased. When

（ZrCl

）∶

（H

BDC）∶

（HAc） = 1∶1∶200， UiO-66 had a more regular octahedral structure， and its specific surface area was as high as 1 270.821 1 m²/g， and the degradation rate of ceftriaxone sodium under visible light irradiation for 120 min was 50.77%.

关键词

UiO-66HAc调节剂合成头孢抗生素

Keywords

UiO-66acetic acidregulatorsynthesiscephalosporin

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