Photo-catalytıc degradatıon of paracetamol using a novel photocatalyst Zr–WO3 doped charcoal

IF 1.7 4区化学 Q4 CHEMISTRY, PHYSICAL

Reaction Kinetics, Mechanisms and Catalysis Pub Date : 2024-09-12 DOI:10.1007/s11144-024-02715-w

Djalila Guettaıa, Hafida Gaffour

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Abstract

The aim of this study is the degradation of paracetamol (PAM) which is widely used as an analgesic and an anti-inflammatory drug in the pharmaceutical sector by advanced oxidation processes as photocatalysis, photolysis and Like photo-Fenton processes. The ZrWC (Zr–WO₃@ charcoal) material was elaborated to be characterized by X-ray diffraction (XRD), Brunauer–Emmett–Teller (BET) theory, Fourier Transform Infrared Spectroscopy (FTIR) and UV–vis diffuse reflectance spectra before its application as photocatalyst in the Paracetamol (PAM) removal. The photodegradation efficiency of PAM was studied by varying the ZrWC amount, the pH value and the PAM concentration. The evolution of PAM concentration was measured by UV–visible spectrophotometer and hight performance liquid chromatography, while the mineralization percentage was monitored by the determination of chemical oxygen demand. The characterization results show that the material has meso-porous structure with the specific surface area of 18.3877 m²/g, and an indirect band gap of 3.9 eV. The efficiency Paracetamol removal increased to 73% whereas 60% of COD is removed after 120 min of irradiation. The optimum conditions determined at room temperature were [PAM] = 20 mg/L, [photocatalyst] = 1 g/L and pH 6.

Graphical Abstract

Abstract Image

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利用掺杂木炭的新型光催化剂 Zr-WO3 光催化降解扑热息痛

本研究的目的是通过光催化、光解和类似光-芬顿过程等高级氧化过程降解扑热息痛（PAM），扑热息痛在制药行业被广泛用作镇痛药和消炎药。在将 ZrWC（Zr-WO3@ 木炭）材料应用于去除扑热息痛（PAM）的光催化剂之前，对其进行了 X 射线衍射（XRD）、Brunauer-Emmett-Teller（BET）理论、傅立叶变换红外光谱（FTIR）和紫外-可见漫反射光谱表征。通过改变 ZrWC 的用量、pH 值和 PAM 浓度，研究了 PAM 的光降解效率。紫外可见分光光度计和高效液相色谱法测量了 PAM 浓度的变化，化学需氧量测定则监测了矿化率。表征结果表明，该材料具有中孔结构，比表面积为 18.3877 m2/g，间接带隙为 3.9 eV。辐照 120 分钟后，扑热息痛的去除率提高到 73%，而 COD 的去除率为 60%。室温下确定的最佳条件为：[PAM] = 20 mg/L，[光催化剂] = 1 g/L，pH 值为 6。

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来源期刊

Reaction Kinetics, Mechanisms and Catalysis CHEMISTRY, PHYSICAL-

CiteScore

3.30

自引率

5.60%

发文量

201

审稿时长

2.8 months

期刊介绍： Reaction Kinetics, Mechanisms and Catalysis is a medium for original contributions in the following fields: -kinetics of homogeneous reactions in gas, liquid and solid phase; -Homogeneous catalysis; -Heterogeneous catalysis; -Adsorption in heterogeneous catalysis; -Transport processes related to reaction kinetics and catalysis; -Preparation and study of catalysts; -Reactors and apparatus. Reaction Kinetics, Mechanisms and Catalysis was formerly published under the title Reaction Kinetics and Catalysis Letters.