Construction of ternary NiCo2O4/MnOOH/GO composite for peroxymonosulfate activation with enhanced catalytic activity toward ciprofloxacin degradation

IF 13.2 1区工程技术 Q1 ENGINEERING, CHEMICAL

Chemical Engineering Journal Pub Date : 2022-10-15 DOI:10.1016/j.cej.2022.137326

Thanh-Binh Nguyen , Van-Re Le , C.P. Huang , Chiu-Wen Chen , Linjer Chen , Cheng-Di Dong

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引用次数: 27

Abstract

A catalyst, NiCo₂O₄/MnOOH/GO, was successfully synthesized by immobilizing NiCo₂O₄ and graphene oxide (GO) on MnOOH for the activation of peroxymonosulfate (PMS) with enhanced catalytic activity in ciprofloxacin (CIP) degradation. Results demonstrated 99% removal of CIP (0.02 mM) in the NiCo/Mn/GO system after 30 min at 0.2 mM of PMS and 0.15 g/L of NiCo/Mn/GO. The effects of solution pH, catalyst dose, PMS concentration, major inorganic ions, and natural organic matter (NOM) on CIP degradation were studied. The NiCo/Mn/GO exhibited good sustainability in catalytic removal efficiency for multiple uses. Furthermore, scavenger tests and electron paramagnetic resonance (EPR) results showed that singlet oxygen (¹O₂), superoxide radicals (O₂^•-), sulfate radicals (SO₄^•−), and hydroxyl radicals (•OH) were generated in the NiCo/Mn/GO + PMS system and participated in CIP degradation. The NiCo/Mn/GO is a promising catalyst for PMS activation in the degradation of CIP and other emerging contaminants.

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三元NiCo2O4/MnOOH/GO复合材料的构建及其对环丙沙星降解的催化活性增强

将NiCo2O4和氧化石墨烯(GO)固定在MnOOH上，成功合成了NiCo2O4/MnOOH/GO催化剂，用于活化过氧单硫酸盐(PMS)，并增强了其降解环丙沙星(CIP)的催化活性。结果表明，在0.2 mM的PMS和0.15 g/L的NiCo/Mn/GO体系中，30分钟后，CIP (0.02 mM)的去除率达到99%。考察了溶液pH、催化剂用量、PMS浓度、主要无机离子和天然有机质(NOM)对CIP降解的影响。NiCo/Mn/GO在多种用途下的催化去除率具有良好的可持续性。此外，清除剂测试和电子顺磁共振(EPR)结果表明，NiCo/Mn/GO + PMS体系中产生了单线态氧(1O2)、超氧自由基(O2•-)、硫酸盐自由基(SO4•−)和羟基自由基(•OH)，并参与了CIP的降解。NiCo/Mn/GO是一种很有前途的催化剂，用于PMS活化降解CIP和其他新兴污染物。

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来源期刊

Chemical Engineering Journal 工程技术-工程：化工

CiteScore

21.70

自引率

9.30%

发文量

6781

审稿时长

2.4 months

期刊介绍： The Chemical Engineering Journal is an international research journal that invites contributions of original and novel fundamental research. It aims to provide an international platform for presenting original fundamental research, interpretative reviews, and discussions on new developments in chemical engineering. The journal welcomes papers that describe novel theory and its practical application, as well as those that demonstrate the transfer of techniques from other disciplines. It also welcomes reports on carefully conducted experimental work that is soundly interpreted. The main focus of the journal is on original and rigorous research results that have broad significance. The Catalysis section within the Chemical Engineering Journal focuses specifically on Experimental and Theoretical studies in the fields of heterogeneous catalysis, molecular catalysis, and biocatalysis. These studies have industrial impact on various sectors such as chemicals, energy, materials, foods, healthcare, and environmental protection.