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比较铜（II）、铁（II）、铁（III）氧化物及其复合纳米颗粒在非均相光芬顿体系中的降解潜力。

Comparing the Degradation Potential of Copper(II), Iron(II), Iron(III) Oxides, and Their Composite Nanoparticles in a Heterogeneous Photo-Fenton System.

作者信息

Khan Asfandyar, Valicsek Zsolt, Horváth Ottó

机构信息

Department of General and Inorganic Chemistry, Faculty of Engineering, University of Pannonia, 8200 Veszprém, Hungary.

Department of Textile Processing, National Textile University, Faisalabad, Punjab 37610, Pakistan.

出版信息

Nanomaterials (Basel). 2021 Jan 16;11(1):225. doi: 10.3390/nano11010225.

DOI:10.3390/nano11010225
PMID:33467125
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC7829782/
Abstract

Heterogeneous photo-Fenton systems offer efficient solutions for the treatment of wastewaters in the textile industry. This study investigated the fabrication and structural characterization of novel peculiar-shaped CuO, Fe O, and FeO nanoparticles (NPs) compared to the properties of the iron(II)-doped copper ferrite Cu Fe Fe O. The photocatalytic efficiencies of these NPs and the composite of the simple oxides (CuO/FeO/Fe O) regarding the degradation of methylene blue (MB) and rhodamine B (RhB) as model dyes were also determined. The catalysts were synthesized via simple co-precipitation and calcination technique. X-ray diffractometry (XRD), scanning electron microscopy (SEM), and diffuse reflectance spectroscopy (DRS) were utilized for structural characterization. The structure of CuO was bead-like connected into threads, Fe O was rod-like, while FeO pallet-like, with average crystallite sizes of 18.9, 36.9, and 37.1 nm, respectively. The highest degradation efficiency was achieved by CuO for RhB and by Cu Fe Fe O for MB. The CuO/FeO/Fe O composite proved to be the second-best catalyst in both cases, with excellent reusability. Hence, these NPs can be successfully applied as heterogeneous photo-Fenton catalysts for the removal of hazardous pollutants. Moreover, the simple metal oxides and the iron(II)-doped copper ferrite displayed a sufficient antibacterial activity against Gram-negative .

摘要

非均相光芬顿体系为纺织工业废水处理提供了有效的解决方案。本研究调查了新型异形氧化铜、氧化铁和氧化亚铁纳米颗粒（NPs）的制备及结构表征，并与铁（II）掺杂的铜铁氧体CuFeFeO的性能进行了比较。还测定了这些纳米颗粒以及简单氧化物复合材料（CuO/FeO/FeO）对作为模型染料的亚甲基蓝（MB）和罗丹明B（RhB）的光催化降解效率。通过简单的共沉淀和煅烧技术合成了催化剂。利用X射线衍射（XRD）、扫描电子显微镜（SEM）和漫反射光谱（DRS）进行结构表征。CuO的结构呈珠状并连接成线，FeO呈棒状，而FeO呈托盘状，平均晶粒尺寸分别为18.9、36.9和37.1nm。CuO对RhB的降解效率最高，CuFeFeO对MB的降解效率最高。在两种情况下，CuO/FeO/FeO复合材料均被证明是第二好的催化剂，具有出色的可重复使用性。因此，这些纳米颗粒可成功用作非均相光芬顿催化剂来去除有害污染物。此外，简单金属氧化物和铁（II）掺杂的铜铁氧体对革兰氏阴性菌显示出足够的抗菌活性。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/220c/7829782/c5a7552838a0/nanomaterials-11-00225-g016.jpg
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