ZnO纳米颗粒的合成及盐酸四环素降解活性研究

doi:10.3969/j.issn.2097-2806.2023.07.007

摘要/Abstract

摘要：

采用溶胶-凝胶法、共沉淀法和水热法合成了C-O官能团嫁接的氧化锌（ZnO）纳米材料。通过X射线粉末衍射仪（XRD）、傅里叶变换红外光谱仪（FTIR）和紫外-可见分光光度计（UV-vis）对其相纯度、有机官能团和紫外吸收能力进行表征。以盐酸四环素为目标降解物，对三种方法合成的ZnO纳米颗粒的光催化活性进行对比研究。三种制备方法均可获得C-O官能团嫁接的ZnO纳米颗粒；红外光谱结果表明样品中除C-O官能团外不含其它有机官能团；紫外-可见漫反射光谱表明目标产物对紫外光具有较强的吸收能力和弱的可见光吸收能力，且均可降解盐酸四环素。光催化实验表明，降解盐酸四环素的较佳条件为：pH值13，催化剂用量1 g/L，盐酸四环素质量浓度20 mg/L。在整个光催化反应降解盐酸四环素的过程中，C-O官能团形成的杂质能级扮演了重要的角色。

关键词: 氧化锌, 溶胶-凝胶法, 共沉淀法, 水热法, 光催化

Abstract:

The zinc oxide （ZnO） nanomaterials grafted with C-O functional groups were synthesized by sol-gel, co-precipitation and hydrothermal methods, respectively. The phase purity, organic functional groups and UV absorption capacity were characterized by X-ray powder diffraction （XRD）, Fourier transform infrared spectroscopy （FTIR） and ultraviolet-visible spectrophotometry （UV-vis）. The photocatalytic activities of ZnO nanoparticles synthesized by the three methods were compared using tetracycline hydrochloride as the target of degradation. All the three preparation methods were successful to obtain the ZnO nanomaterials grafted with C-O functional groups. The results of FTIR showed that the samples had no organic functional groups except for C-O functional group. UV-vis diffuse reflectance spectra showed that the products had strong absorption ability to ultraviolet light and weak absorption ability to visible light and could degrade tetracycline hydrochloride. Photocatalytic experiments showed that the best pH value for degradation of tetracycline hydrochloride was 13, the best catalyst dosage was 1 g/L, and the best concentration of tetracycline hydrochloride was 20 mg/L. The impurity level of C-O functional group played an important role in the photocatalytic degradation of tetracycline hydrochloride.

Key words: ZnO, sol-gel method, co-precipitation method, hydrothermal method, photocatalysis

中图分类号:

TQ658

章贞阳, 何云阳. ZnO纳米颗粒的合成及盐酸四环素降解活性研究[J]. 日用化学工业（中英文）, 2023, 53(7): 781-788.

Zhang Zhenyang, He Yunyang. Syntheses of ZnO nanoparticles and their degradation activities on tetracycline hydrochloride[J]. China Surfactant Detergent & Cosmetics, 2023, 53(7): 781-788.

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