Nanoporous bimetallic metal-organic framework (FeCo-BDC) as a novel catalyst for efficient removal of organic contaminants. (December 2019)

• Record Type: Journal Article
• Authors: Li, Huanxuan; Zhang, Jian; Yao, Yuze; Miao, Xiangrui; Chen, Jiale; Tang, Junhong
• Is Part Of: Environmental pollution. Volume 255(2019)Part 2
• Publication Date: 2019-12
• Subjects: FeCo-BDC -- Synthesis -- Characterization -- Peroxymonosulfate (PMS) -- Catalytic performance; Pollution -- Periodicals; Pollution -- Environmental aspects -- Periodicals; Environmental Pollution -- Periodicals; Pollution -- Périodiques; Pollution -- Aspect de l'environnement -- Périodiques; Pollution -- Effets physiologiques -- Périodiques; Pollution; Pollution -- Environmental aspects; Periodicals; Electronic journals; 363.73
• DOI: 10.1016/j.envpol.2019.113337
• Languages: English
• ISSNs: 0269-7491

Abstract

Abstract: In this work, we report on the synthesis and characterization of nanoporous bimetallic metal-organic frameworks (FeCo-BDC). Effects of synthesis time and temperature on the structures, morphology, and catalytic performance of FeCo-BDC were investigated. Scanning Electron Microscopy (SEM), Transmission electron microscopy (TEM) and Brunauer-Emmett-Teller (BET) were used to reveal the morphological and textural characteristics. The crystal structure and chemical composition of FeCo-BDC were determined by means of X-ray powder diffraction (XRD), Fourier Transform Infrared Spectroscopy (FT-IR), X-ray Photoelectron Spectroscopy (XPS), and Inductively Coupled Plasma Mass Spectrometry (ICP-MS) measurements. Interestingly, FeCo-BDC grew into the same crystal structure with different morphology in the temperature of 110–150 °C with 12–48 h. The heterogeneous catalytic activity of FeCo-BDC was tested to activate peroxydisulfate (PDS) and peroxymonosulfate (PMS) for removal of methylene blue (MB). The results found that FeCo-BDC synthesized at 150 °C with 24 h exhibited the best catalytic performance for PMS and obtained 100% of MB removal within 15 min. The abundant unsaturated metal active sites of Fe(II) and Co(II) in the skeleton of FeCo-BDC made a great contribution to the generation of sulfate ( ) and hydroxyl radicals (OH), which resulted in the excellent performance for MB degradation. Graphical abstract: Image 1 Highlights: FeCo-BDC with mesoporous and microporous structure was facile synthesized. The same crystal structure of FeCo-BDC had diverse morphology. The nodes of bimetallic MOFs presented with unsaturated sites of Fe(II) and Co(II). FeCo-BDC showed excellent performance for removal of contaminants. and OH were identified as the primary reactive species