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使用聚苯胺-铜铁氧体纳米复合材料对亚甲基蓝染料进行光催化降解。

Photocatalytic Degradation of Methylene Blue Dye using PANI-CuFeO Nano Composite.

作者信息

Saha Tisa Rani, Habib Md Ahsan, Ali S M Imran, Naime Jannatul, Mahiuddin Md, Sarkar Shaheen M, Khan Md Abu Rayhan, Karim Kaykobad Md Rezaul

机构信息

Chemistry Discipline Khulna University Khulna 9208 Bangladesh.

Department of Applied Science Technological University of the Shannon Midlands Midwest, Moylish Limerick V94 EC5T Ireland.

出版信息

Glob Chall. 2024 Nov 15;8(12):2400179. doi: 10.1002/gch2.202400179. eCollection 2024 Dec.

DOI:10.1002/gch2.202400179
PMID:39679294
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC11637778/
Abstract

The present perspective accentuates the synthesis of PANI-CuFeO (PCF) nanocomposite, and photocatalytic degradation of methylene blue (MB) dye using a synthesized composite. The stable PCF is confirmed and characterized by analytical techniques, namely, fourier transform infrared (FTIR) and X-ray photoelectron (XPS) spectroscopy, X-ray diffraction (XRD), energy-dispersive X-ray (EDX), scanning electron microscopy (SEM), and vibrating sample magnetometry (VSM) analysis. The synthesized PCF nanocomposites are significantly crystalline in nature, having magnetic saturation of 10.47 emu g, and monoclinic crystalline structure as well as the size of nanocomposite is 39.54 nm verified by XRD pattern. SEM analysis revealed a regular porous and rough surface of nanocomposite. In addition, the nanocomposite divulged the remarkable efficient elimination of MB dye with maximum removal of 96% with good fitting of Langmuir isotherm, indication of monolayer formation on the catalyst surface through the interaction between nanocomposite and dye molecule. The adsorption kinetics bolstered the pseudo-second-order kinetic model, suggesting the adsorption process proceeded by chemisorption. The most notable feature of the nanocomposite is the reusability and good stability after several cycles, maintaining 90% after five cycles.

摘要

本文着重阐述了聚苯胺 - 铜铁氧体（PCF）纳米复合材料的合成，以及使用合成的复合材料对亚甲基蓝（MB）染料进行光催化降解。通过傅里叶变换红外光谱（FTIR）、X射线光电子能谱（XPS）、X射线衍射（XRD）、能量色散X射线光谱（EDX）、扫描电子显微镜（SEM）和振动样品磁强计（VSM）分析等分析技术对稳定的PCF进行了确认和表征。合成的PCF纳米复合材料本质上具有显著的结晶性，磁饱和度为10.47 emu g，具有单斜晶体结构，通过XRD图谱验证纳米复合材料的尺寸为39.54 nm。SEM分析显示纳米复合材料表面具有规则的多孔性和粗糙度。此外，该纳米复合材料对MB染料具有显著的高效去除效果，最大去除率为96%，与朗缪尔等温线拟合良好，表明通过纳米复合材料与染料分子之间的相互作用在催化剂表面形成了单分子层。吸附动力学支持伪二级动力学模型，表明吸附过程是通过化学吸附进行的。该纳米复合材料最显著的特点是经过几个循环后具有可重复使用性和良好的稳定性，五个循环后仍保持90%。

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