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Zhen H, Zhou X, Yang J, Liu Y, Jin H, Yang S, He G, Ma L. Characteristics and catalytic behavior of Ru-Sn bimetallic catalysts for TMCB hydrogenation to CBDO. RSC Adv 2024; 14:2850-2861. [PMID: 38234868 PMCID: PMC10792728 DOI: 10.1039/d3ra07306h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2023] [Accepted: 12/19/2023] [Indexed: 01/19/2024] Open
Abstract
A series of Ru-Sn/γ-Al2O3 catalysts were prepared by the immersion method for tetramethylcyclobutane-1,3-dione (TMCB) hydrogenation to prepare 2,2,4,4-tetramethyl-1,3-cyclobutanediol (CBDO). The effect of the preparation method and reaction technology on TMCB hydrogenation activity was discussed. The catalysts were analyzed by means of XRD, BET, H2-TPR, XPS, scanning electron microscopy (SEM), and transmission electron microscopy (TEM), and it was found that the synthesized Ru was distributed on the surface of the carrier in the form of nanoparticles, showing a good catalytic effect. The results showed that when Ru loading was fixed at 5%, Sn was used as an auxiliary agent, and Ru/Sn = 1 : 1 as the catalyst, the reaction conditions were 120 °C, 4 MPa, and 1 h, and the catalytic hydrogenation effect of TMCB on CBDO was the best. The selectivity was as high as 73.5%, and the cis-trans ratio was 1.11. It may be the strong interaction between Ru and Sn under this ratio condition, which leads to the largest number of nano-active centers of elemental Ru. Finally, the reaction mechanism of TMCB hydrogenation to CBDO is discussed.
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Affiliation(s)
- Hao Zhen
- College of New Material and Chemical Engineering, Beijing Institute of Petrochemical Technology Beijing 102617 China
| | - Xin Zhou
- College of New Material and Chemical Engineering, Beijing Institute of Petrochemical Technology Beijing 102617 China
| | - Jinsheng Yang
- Zhenghe Group Co., Ltd Dongying 257342 Shandong China
| | - Yanqing Liu
- Zhenghe Group Co., Ltd Dongying 257342 Shandong China
| | - Haibo Jin
- College of New Material and Chemical Engineering, Beijing Institute of Petrochemical Technology Beijing 102617 China
- Beijing Key Laboratory of Fuels Cleaning and Advanced Catalytic Emission Reduction Technology Beijing 102627 China
| | - Suohe Yang
- College of New Material and Chemical Engineering, Beijing Institute of Petrochemical Technology Beijing 102617 China
- Beijing Key Laboratory of Fuels Cleaning and Advanced Catalytic Emission Reduction Technology Beijing 102627 China
| | - Guangxiang He
- College of New Material and Chemical Engineering, Beijing Institute of Petrochemical Technology Beijing 102617 China
- Beijing Key Laboratory of Fuels Cleaning and Advanced Catalytic Emission Reduction Technology Beijing 102627 China
| | - Lei Ma
- College of New Material and Chemical Engineering, Beijing Institute of Petrochemical Technology Beijing 102617 China
- Beijing Key Laboratory of Fuels Cleaning and Advanced Catalytic Emission Reduction Technology Beijing 102627 China
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Jafari F, Rahsepar FR. V 2O 5-Fe 3O 4/rGO Ternary Nanocomposite with Dual Applications as a Dye Degradation Photocatalyst and OER Electrocatalyst. ACS OMEGA 2023; 8:35427-35439. [PMID: 37779947 PMCID: PMC10536842 DOI: 10.1021/acsomega.3c06094] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/17/2023] [Accepted: 09/01/2023] [Indexed: 10/03/2023]
Abstract
The design and synthesis of structured nanomaterials with dual properties have always been highly attractive in various fields, especially in the reduction of environmental pollution as well as the generation of renewable energy. In this study, the synthesized ternary V2O5-Fe3O4/rGO nanocomposite was investigated to evaluate both the photocatalytic and electrocatalytic activities for the removal of methylene blue (MB) dye under UV/visible light radiation and oxygen evolution reaction (OER), respectively. The magnetized V2O5-Fe3O4/rGO nanocomposite is characterized by TEM, FE-SEM (with coupling by elemental mapping), EDS, XRD, FTIR, Raman, PL, DRS, and UV-vis analyses. The obtained results show that the graphene oxide substrate is decorated very well using Fe3O4 and V2O5 nanoparticles and converted to reduced graphene oxide (rGO). Furthermore, the V2O5-Fe3O4/rGO nanocomposite is considered as an active catalyst material to modify the commercial glassy carbon electrode for OER using linear sweep voltammetry (LSV). The photocatalytic activity of this novel nanocomposite revealed 89.2% (kobs = 1.7 × 10-2 min-1) and 76% (kobs = 8.3 × 10-3 min-1) degradation efficiencies of MB dye under UV and visible light irradiation at room temperature, respectively, and the surface area of the V2O5-Fe3O4/rGO nanocomposite was examined to be 705.8 cm2/g by N2 adsorption-desorption isotherms. In addition, electrochemical measurements determined the best OER performance of the ternary nanocomposite with the lowest overpotential (458 mV) and Tafel slope (132 mV dec-1) compared to the rGO substrate, Fe3O4, V2O5 nanoparticles, and binary nanocomposites. This work shows much enhancements in both photocatalytic and electrocatalytic activities due to the synergistic effect of the decorated GO support with V2O5 and Fe3O4 nanoparticles.
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Affiliation(s)
- Fatemeh Jafari
- School of Chemistry, College
of Science, University of Tehran, Tehran 1417614411, Iran
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Mehralipour J, Bagheri S, Gholami M. Synthesis and characterization of rGO/Fe 0/Fe 3O 4/TiO 2 nanocomposite and application of photocatalytic process in the decomposition of penicillin G from aqueous. Heliyon 2023; 9:e18172. [PMID: 37519670 PMCID: PMC10372246 DOI: 10.1016/j.heliyon.2023.e18172] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2022] [Revised: 07/09/2023] [Accepted: 07/10/2023] [Indexed: 08/01/2023] Open
Abstract
In this study, we synthesized rGO/Fe0/Fe3O4/TiO2 nanocomposite according to Hummer's, and straightforward sol-gel method. The FESEM, EDX, TEM, FT-IR, XRD, BET, UV spectra, and VSM analysis were applied to determine the catalyst properties. Optimization of influence parameters on photocatalytic process performance to penicillin G degradation in aqueous media. pH (4-8), nanocomposite dose (10-20 mg/L), reaction time (30-60 min), and penicillin G concentration (50-100 mg/L) were optimized via central composite design. In the optimum condition of PCP, supplementary studies were done. As a result of the analysis, the nanocomposite was well synthesized and displayed superior photocatalytic properties for degrading organic pollutants. In addition to being magnetically separable, the synthesized rGO/Fe0/Fe3O4/TiO2 nanocomposite exhibits high recyclability up to 5 times. The quadratic model of optimization is based on the adjusted R2(0.99), and predicated R2(0.97) suggested. According to the analysis of variance test, the model was significant (F-Value = 162.95, P-Value = 0.0001). Photocatalytic process is most efficiently decomposed at pH = 6.5, catalyst dose = 18.5 mg/L, reaction time = 59.1 min, and penicillin G concentration = 52 mg/L (efficiency = 96%). The chemical oxygen demand and total organic carbon decrease were 78, and 65%. The photolysis and adsorption mechanism as a single mechanism had lower performance in penicillin G degradation. Benzocaine had the greatest effect on reducing the efficiency of the process as a radical scavenger. The °OH, h+, and O2●- were the main reactive oxidant species in penicillin G removal. Phenoxyacetaldehyde, Acetanilide, Diacetamate, Phenylalanylglycine, N-Acetyl-l-phenylalanine, Diformyldapsone, and Succisulfone were the main intermediates in penicillin G degradation. The results indicated the photocatalytic process with rGO/Fe0/Fe3O4/TiO2 nanocomposite on a laboratory scale has good efficiency in removing penicillin G antibiotic. The application of real media requires further studies.
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Affiliation(s)
- Jamal Mehralipour
- Research Center for Environmental Health Technology, Iran University of Medical Sciences, Tehran, Iran
- Department of Environmental Health Engineering, School of Public Health, Iran University of Medical Sciences, Tehran, Iran
- Student Research Committee, Iran University of Medical Sciences, Tehran, Iran
| | - Susan Bagheri
- Research Center for Environmental Health Technology, Iran University of Medical Sciences, Tehran, Iran
- Department of Environmental Health Engineering, School of Public Health, Iran University of Medical Sciences, Tehran, Iran
| | - Mitra Gholami
- Research Center for Environmental Health Technology, Iran University of Medical Sciences, Tehran, Iran
- Department of Environmental Health Engineering, School of Public Health, Iran University of Medical Sciences, Tehran, Iran
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Zhang H, Mei Y, Zhu F, Yu F, Komarneni S, Ma J. Efficient activation of persulfate by C@Fe 3O 4 in visible-light for tetracycline degradation. CHEMOSPHERE 2022; 306:135635. [PMID: 35810856 DOI: 10.1016/j.chemosphere.2022.135635] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/23/2022] [Revised: 06/20/2022] [Accepted: 07/03/2022] [Indexed: 06/15/2023]
Abstract
A C@Fe3O4 material, Fe3O4 coated with carbon, was prepared by a simple one-pot hydrothermal method. The C@Fe3O4 material was investigated with persulfate (PS) and light to degrade tetracycline (TC) as a function of pH, aeration conditions and quenching. Experimental results suggest that TC was effectively degraded in the C@Fe3O4/PS/Vis system. In addition, due to the availability of different main active species in this catalytic system, TC degradation was possible under both strong acid and strong alkali pH conditions. The presence of dissolved oxygen can also generate oxygen-active species, such as superoxide radicals (O2•-) and singlet oxygen (1O2), to decompose TC organic matter in solution. Simply put, C@Fe3O4/PS/Vis catalytic system removed pollutants by the formation of O2•-, 1O2, hydroxyl radicals (•OH) and sulfate radicals (SO4•-) species for degrading TC. In addition, the stability of the C@Fe3O4 material was found to be outstanding.
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Affiliation(s)
- He Zhang
- School of Environmental and Safety Engineering, Changzhou University, Jiangsu, 213164, China
| | - Yu Mei
- College of Biological and Environmental Engineering, Zhejiang Shuren University, Zhejiang, 312028, China
| | - Fang Zhu
- School of Environmental and Safety Engineering, Changzhou University, Jiangsu, 213164, China
| | - Fenting Yu
- School of Environmental and Safety Engineering, Changzhou University, Jiangsu, 213164, China
| | - Sridhar Komarneni
- Department of Ecosystem Science and Management and Materials Research Institute, 204 Materials Research Laboratory, The Pennsylvania State University, University Park, PA, 16802, USA.
| | - Jianfeng Ma
- School of Environmental and Safety Engineering, Changzhou University, Jiangsu, 213164, China.
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Wang Z, Cui H, Xu H, Sheng Y. Decorated reduced graphene oxide transfer sulfides into sulfur and sulfone in wastewater. RSC Adv 2022; 12:28586-28598. [PMID: 36320494 PMCID: PMC9539723 DOI: 10.1039/d2ra04323h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2022] [Accepted: 09/21/2022] [Indexed: 11/12/2022] Open
Abstract
Sulfides cannot be completely removed using oxidation due to the production of sulfate. In this work, a reduced graphene oxide (RGO)/Fe3O4 hybrid material was synthesized via a simple in situ chemical method for sulfide removal. The adsorption capacity of RGO/Fe3O4 was evaluated by sulfide removal from aqueous solution, and different experimental parameters including contact time, solution pH, adsorbent dosage, ion strength and temperature were investigated. The equilibrium data were in accordance with the Langmuir linear isotherm with a maximum uptake capacity of 173 mg g-1. The adsorption of sulfide by the RGO/Fe3O4 hybrid material can be attributed to the synergistic effect of both chemical and physical adsorption according to kinetic, adsorption isotherm and thermodynamic studies. The RGO/Fe3O4 material with oxygenated functional groups could convert sulfides to stable elemental sulfur and sulfone organics. The external magnetic field could easily separate the magnetic RGO/Fe3O4 adsorbent from the liquid. This research provides a novel strategy for the green and low-cost treatment of sulfide-containing wastewater by the RGO/Fe3O4 hybrid material.
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Affiliation(s)
- Zheng Wang
- School of Chemistry and Chemical Engineering, Yantai University Yantai 264005 China
- Key Laboratory of Coastal Zone Environmental Processes, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences Yantai 264003 China +86-0535-2109265
| | - Hongtao Cui
- School of Chemistry and Chemical Engineering, Yantai University Yantai 264005 China
| | - Hengduo Xu
- Key Laboratory of Coastal Zone Environmental Processes, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences Yantai 264003 China +86-0535-2109265
| | - Yanqing Sheng
- Key Laboratory of Coastal Zone Environmental Processes, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences Yantai 264003 China +86-0535-2109265
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Khalili D, Roosta M, Khalafi-Nezhad A, Ebrahimi E. From methylarenes to Esters: Efficient oxidative Csp3-H activation promoted by CuO decorated magnetic reduced graphene oxide. NEW J CHEM 2022. [DOI: 10.1039/d2nj00728b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Magnetic reduced graphene oxide supported CuO (rGO/Fe3O4-CuO) as the heterogeneous catalyst in cross dehydrogenative coupling (CDC) reactions has been demonstrated for the synthesis of esters using methyl aromatics, aldehydes/benzyl alcohols...
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Catalytic activity of ratio-dependent SBA-15 supported cerium/Pt catalysts for highly selective oxidation reaction of benzyl alcohol to benzaldehyde. ADV POWDER TECHNOL 2021. [DOI: 10.1016/j.apt.2021.09.033] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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Niakan M, Masteri-Farahani M, Karimi S, Shekaari H. Hydrophilic role of deep eutectic solvents for clean synthesis of biphenyls over a magnetically separable Pd-catalyzed Suzuki-Miyaura coupling reaction. J Mol Liq 2021. [DOI: 10.1016/j.molliq.2020.115078] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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