Construction of CeO2/YMnO3 and CeO2/MgAl2O4/YMnO3 photocatalysts and adsorption of dyes and photocatalytic oxidation of antibiotics: Performance prediction, degradation pathway and mechanism insight
Construction of CeO2/YMnO3 and CeO2/MgAl2O4/YMnO3 photocatalysts and adsorption of dyes and photocatalytic oxidation of antibiotics: Performance prediction, degradation pathway and mechanism insight
复制标题
DOI：
10.1016/j.apsusc.2022.154977
复制
发表时间：
2023-01
影响因子：
6.7
通讯作者：
Shifa Wang;Maoyuan Li;Huajing Gao;Zijuan Yin;Chaoli Chen;Han Yang;Leiming Fang;V. Jagadeesha Angadi-V.-Ja
中科院分区：
文献类型：
--
作者：
Shifa Wang;Maoyuan Li;Huajing Gao;Zijuan Yin;Chaoli Chen;Han Yang;Leiming Fang;V. Jagadeesha Angadi-V.-Ja
采用简单的两步法制备了YMnO 3/CeO 2/MgAl 2 O 4（YCM）三元异质结复合光催化剂，该复合光催化剂对刚果红具有良好的吸附性能，并在可见光照射下对盐酸四环素（TC-HCl）具有良好的光催化降解活性。系统的研究表明，YCM复合光催化剂具有较高的光吸收系数、载流子转移和分离效率、吸附氧浓度和界面缺陷、较高的吸附容量和光催化活性。采用BP神经网络模型、鲸鱼优化算法（WOA）和遗传算法（GA）对YC复合光催化剂的吸附性能进行预测，其中GA模型的预测能力最好。这种高吸附率是静电作用、离子交换和氢键作用的协同作用的结果。捕获实验表明，光生空穴、羟基和超氧阴离子自由基是YCM复合光催化剂光催化过程中的主要活性物种。通过高效液相色谱-串联质谱（HPLC-MS）对中间体的鉴定，提出了可见光照射下YCM复合光催化剂降解TC-HCl的可能途径。这一工作表明YCM复合光催化剂作为一种环境友好的光催化剂在染料吸附和药物降解方面具有巨大的潜力。
A simple two step method was developed for fabrication of ternary heterojunctions of YMnO3/CeO2/MgAl2O4(YCM) composite photocatalysts, which shows well adsorption capacity for the adsorption of Congo red and photocatalytic activity for the degradation of tetracycline hydrochloride (TC-HCl) under visible light irradiation. Systematic studies suggested that the YCM composite photocatalysts exhibit high optical absorption coefficient, charge carrier transfer and separation efficiency, adsorbed oxygen concentration and interface defect, high adsorption capacity and photocatalytic activity. The back propagation (BP) neural network model, whale optimization algorithm (WOA) and genetic algorithm (GA) were used to predict the adsorption capacity of YC composite photocatalysts, and GA model demonstrated the best predictive ability. The high adsorption can be assigned to the synergistic effect of electrostatic interaction, ion exchange and hydrogen bonding. Capture experiments revealed that photogenerated holes, hydroxyl and superoxide radicals are the main active species during the photocatalytic process for the YCM composite photocatalysts. Possible degradation pathways of TC-HCl over YCM composite photocatalysts under visible light irradiation were proposed through the identification of intermediates using high-performance liquid chromatography-tandem mass spectrometry (HPLC–MS). This work demonstrated a huge potential of YCM composite photocatalysts as an eco-friendly photocatalyst for adsorption of dye and degradation of drug.