Visible Light-Triggered Chitosan Supported Ternary Ferrite for Efficient Removal of Organic Dye Pollutants from Wastewater

IF 2.8 3区化学 Q2 CHEMISTRY, APPLIED

Topics in Catalysis Pub Date : 2024-07-17 DOI:10.1007/s11244-024-01992-y

Nisar Ali, Fawad Khan, Arif Nawaz, Adnan Khan, Faiza Amin, Nauman Ali

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引用次数: 0

Abstract

The unregulated industrializations has poses serious threat to entire ecosystem by releasing untreated effluents containing hazardous dyes to fresh water. In the forefront polycationic ferrite (ternary ferrite)-chitosan microspheres were used to address the issue of synthetic dyes, contaminating water bodies. In the current study, visible light assisted ternary ferrite Fe₂Ni_0.5Cu_0.5O₄ (CNF-NPs) photocatalyst along with their binary ferrite photocatalysts Fe₂CuO₄ (CF-NPs) and Fe₂NiO₄ (NF-NPs) were prepared by a facile approach to compare the efficiency of ternary and binary ferrites photocatalysts for degradation of dye. Additionally, chitosan was used to support ferrites, and different chitosan-supported ternary ferrite microspheres (CNF-CM) and binary ferrite microspheres (CF-CM and NF-CM), were tailored respectively. FTIR analysis of CNF-CM composites shows presence of all the characteristics peaks of chitosan and CNF NPs confirming its synthesis. The calculated average crystallite size (18 nm) were obtained from Scherrer's equation applied to XRD data. The composition of CNF-NPs was confirmed by EDX analysis. The CNF-CM has 860 μm microsphere size with a smooth surface as shown in SEM images. The calculated optical band gap of the synthesized photocattalyst lies in visible region (2.01) obtained from Tauc’s plot. The photocatalyst CNF-CM showed 93% degradation efficiency for hazardous methylene blue (MB) and 90% efficiency for rhodamine b (RB) dyes within 140 min of sunlight irradiation at optimum conditions. Inorder to validate the photocatalytic efficiency of the CNF-CM, the experimental conditions were also optimized by statistical optimization methods (RSM, ANN). The ANOVA adequate precision (AP) value of 17.83 (> 4) for MB and 16.91 for RB suggests that the projected output variable range is relatively larger compared to the average standard error, further affirming the competence of the quadratic model.

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可见光触发壳聚糖支撑的三元铁氧体用于高效去除废水中的有机染料污染物

无节制的工业化向淡水排放含有有害染料的未经处理的废水，对整个生态系统构成了严重威胁。前沿的多阳离子铁氧体（三元铁氧体）-壳聚糖微球被用来解决合成染料污染水体的问题。本研究采用简便的方法制备了可见光辅助三元铁氧体 Fe2Ni0.5Cu0.5O4（CNF-NPs）光催化剂及其二元铁氧体光催化剂 Fe2CuO4（CF-NPs）和 Fe2NiO4（NF-NPs），以比较三元和二元铁氧体光催化剂降解染料的效率。此外，利用壳聚糖支撑铁氧体，分别定制了不同的壳聚糖支撑三元铁氧体微球（CNF-CM）和二元铁氧体微球（CF-CM 和 NF-CM）。CNF-CM 复合材料的傅立叶变换红外分析表明，壳聚糖和 CNF NPs 的所有特征峰的存在都证实了其合成。根据 XRD 数据应用 Scherrer 方程计算出平均结晶尺寸（18 nm）。EDX 分析证实了 CNF-NPs 的成分。扫描电镜图像显示，CNF-CM 的微球尺寸为 860 μm，表面光滑。根据陶氏图计算得出，合成光触媒的光带隙位于可见光区（2.01）。在最佳条件下，光催化剂 CNF-CM 在阳光照射 140 分钟内对有害亚甲基蓝（MB）的降解效率为 93%，对罗丹明 b（RB）染料的降解效率为 90%。为了验证 CNF-CM 的光催化效率，还采用统计优化方法（RSM、ANN）对实验条件进行了优化。方差分析的充分精度（AP）值为：MB 17.83 (> 4)，RB 16.91，这表明与平均标准误差相比，预测的输出变量范围相对较大，进一步肯定了二次模型的能力。

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来源期刊

Topics in Catalysis 化学-物理化学

CiteScore

5.70

自引率

5.60%

发文量

197

审稿时长

2 months

期刊介绍： Topics in Catalysis publishes topical collections in all fields of catalysis which are composed only of invited articles from leading authors. The journal documents today’s emerging and critical trends in all branches of catalysis. Each themed issue is organized by renowned Guest Editors in collaboration with the Editors-in-Chief. Proposals for new topics are welcome and should be submitted directly to the Editors-in-Chief. The publication of individual uninvited original research articles can be sent to our sister journal Catalysis Letters. This journal aims for rapid publication of high-impact original research articles in all fields of both applied and theoretical catalysis, including heterogeneous, homogeneous and biocatalysis.