Synthesis of Polyhedral Zirconia Nanoparticles for The Photocatalytic Degradation of Anionic Congo Red Dye Under Visible Light Irradiation

IF 2.8 3区化学 Q2 CHEMISTRY, APPLIED

Topics in Catalysis Pub Date : 2024-01-06 DOI:10.1007/s11244-023-01897-2

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引用次数: 0

Abstract

In this study, mixed phase (tetragonal and monoclinic) Zirconia nanoparticles (ZrO₂ NPs) namely, ZS3, ZS7 and ZS10 were synthesized via hydrothermal method at different pH values of (3, 7, 10) respectively. A combination of Powder X-ray diffraction (PXRD), High Resolution Transmission Electron Microscopy (HRTEM), and Selected Area Electron Diffraction (SAED) characterization techniques confirmed the formation of mixed phase ZrO₂ nanoparticles. The photocatalytic behavior of synthesized ZrO₂ NPs was examined for the degradation of anionic Congo Red (CR) Dye under visible light irradiation. A systematic study of the efficiency of the prepared ZS3, ZS7 and ZS10 nanoparticles was compared and it was found that ZS7 outperformed the ZS3 and ZS10 materials, having removal efficiency of up to 98.9% with 0.1 g of the prepared ZS7 nanoparticles for 75 ppm of Congo Red (CR) dye. Furthermore, the surface area analysis revealed that among the prepared materials, ZS7 exhibited the highest surface area, thereby corroborating the finding of its superior catalytic efficiency. Under the optimized experimental conditions, the degradation of dye followed first-order kinetics. ZS7 showed the highest removal efficiency in just 60 min of contact time for all the CR dye concentrations ranging from 50 to 100 ppm, making it a superior catalyst for the efficient removal of the targeted Congo Red dye.

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在可见光照射下合成用于光催化降解阴离子刚果红染料的多面体氧化锆纳米粒子

摘要本研究在不同的 pH 值（3、7、10）下，通过水热法合成了混合相（四方和单斜）氧化锆纳米粒子（ZrO2 NPs），即 ZS3、ZS7 和 ZS10。结合粉末 X 射线衍射 (PXRD)、高分辨率透射电子显微镜 (HRTEM) 和选区电子衍射 (SAED) 表征技术，证实了混合相 ZrO2 纳米粒子的形成。研究了合成的 ZrO2 NPs 在可见光照射下降解阴离子刚果红（CR）染料的光催化行为。对所制备的 ZS3、ZS7 和 ZS10 纳米粒子的效率进行了系统研究和比较，发现 ZS7 的性能优于 ZS3 和 ZS10 材料，对于 75 ppm 的刚果红（CR）染料，0.1 g 所制备的 ZS7 纳米粒子的去除率高达 98.9%。此外，比表面积分析表明，在所制备的材料中，ZS7 的比表面积最大，从而证实了其卓越的催化效率。在优化的实验条件下，染料降解遵循一阶动力学。在所有浓度为 50 至 100 ppm 的刚果红染料中，ZS7 在短短 60 分钟的接触时间内就显示出最高的去除效率，使其成为高效去除目标刚果红染料的优质催化剂。

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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.