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Chen D, Wang J, Li N, Luo X, Yu H, Fu H, Chen Z, Yu B, Jin Y, Kopchuk DS. Application of Bimetallic Hydroxide/Graphene Composites in Wastewater Treatment. Molecules 2024; 29:3157. [PMID: 38999111 PMCID: PMC11243626 DOI: 10.3390/molecules29133157] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2024] [Revised: 06/21/2024] [Accepted: 06/29/2024] [Indexed: 07/14/2024] Open
Abstract
The increasing discharge of antibiotic wastewater leads to increasing water pollution. Most of these antibiotic wastewaters are persistent, strongly carcinogenic, easy to bioaccumulate, and have other similar characteristics, seriously jeopardizing human health and the ecological environment. As a commonly used wastewater treatment technology, non-homogeneous electro-Fenton technology avoids the hazards of H2O2 storage and transportation as well as the loss of desorption and reabsorption. It also facilitates electron transfer on the electrodes and the reduction of Fe3+ on the catalysts, thereby reducing sludge production. However, the low selectivity and poor activity of electro-synthesized H2O2, along with the low concentration of its products, combined with the insufficient activity of electrically activated H2O2, results in a low ∙OH yield. To address the above problems, composites of layered bimetallic hydroxides and carbon materials were designed and prepared in this paper to enhance the performance of electro-synthesized H2O2 and non-homogeneous electro-Fenton by changing the composite mode of the materials. Three composites, NiFe layered double hydroxides (LDHs)/reduced graphene oxide (rGO), NiMn LDHs/rGO, and NiMnFe LDHs/rGO, were constructed by the electrostatic self-assembly of exfoliated LDHs with few-layer graphene. The LDHs/rGO was loaded on carbon mats to construct the electro-Fenton cathode materials, and the non-homogeneous electro-Fenton oxidative degradation of organic pollutants was realized by the in situ electrocatalytic reduction of O2 to ∙OH. Meanwhile, the effects of solution pH, applied voltage, and initial concentration on the performance of non-homogeneous electro-Fenton were investigated with ceftazidime as the target pollutant, which proved that the cathode materials have an excellent electro-Fenton degradation effect.
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Affiliation(s)
- Dan Chen
- School of Pharmaceutical and Chemical Engineering, Taizhou University, Taizhou 318000, China
- Taizhou Biomedical and Chemistry Industry Institute, Taizhou 318000, China
| | - Jiao Wang
- School of Pharmaceutical and Chemical Engineering, Taizhou University, Taizhou 318000, China
| | - Nana Li
- School of Pharmaceutical and Chemical Engineering, Taizhou University, Taizhou 318000, China
| | - Xiaoqin Luo
- School of Pharmaceutical and Chemical Engineering, Taizhou University, Taizhou 318000, China
| | - Hua Yu
- School of Pharmaceutical and Chemical Engineering, Taizhou University, Taizhou 318000, China
- Taizhou Biomedical and Chemistry Industry Institute, Taizhou 318000, China
| | - Haichang Fu
- School of Pharmaceutical and Chemical Engineering, Taizhou University, Taizhou 318000, China
- Taizhou Biomedical and Chemistry Industry Institute, Taizhou 318000, China
| | - Zhangxin Chen
- School of Pharmaceutical and Chemical Engineering, Taizhou University, Taizhou 318000, China
- Taizhou Biomedical and Chemistry Industry Institute, Taizhou 318000, China
| | - Binbin Yu
- School of Pharmaceutical and Chemical Engineering, Taizhou University, Taizhou 318000, China
- Taizhou Biomedical and Chemistry Industry Institute, Taizhou 318000, China
| | - Yanxian Jin
- School of Pharmaceutical and Chemical Engineering, Taizhou University, Taizhou 318000, China
| | - Dmitry S Kopchuk
- Chemical Engineering Institute, Ural Federal University, 19 Mira Str., 620002 Ekaterinburg, Russia
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Pavel OD, Stamate AE, Zăvoianu R, Cruceanu A, Tirsoaga A, Bîrjega R, Brezeștean IA, Ciorîță A, Culiță DC, Dias APS. Mo-LDH-GO Hybrid Catalysts for Indigo Carmine Advanced Oxidation. MATERIALS (BASEL, SWITZERLAND) 2023; 16:3025. [PMID: 37109860 PMCID: PMC10142217 DOI: 10.3390/ma16083025] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/16/2023] [Revised: 03/29/2023] [Accepted: 04/08/2023] [Indexed: 06/19/2023]
Abstract
This paper is focused on the utilization of hybrid catalysts obtained from layered double hydroxides containing molybdate as the compensation anion (Mo-LDH) and graphene oxide (GO) in advanced oxidation using environmentally friendly H2O2 as the oxidation agent for the removal of indigo carmine dye (IC) from wastewaters at 25 °C using 1 wt.% catalyst in the reaction mixture. Five samples of Mo-LDH-GO composites containing 5, 10, 15, 20, and 25 wt% GO labeled as HTMo-xGO (where HT is the abbreviation used for Mg/Al in the brucite type layer of the LDH and x stands for the concentration of GO) have been synthesized by coprecipitation at pH 10 and characterized by XRD, SEM, Raman, and ATR-FTIR spectroscopy, determination of the acid and base sites, and textural analysis by nitrogen adsorption/desorption. The XRD analysis confirmed the layered structure of the HTMo-xGO composites and GO incorporation in all samples has been proved by Raman spectroscopy. The most efficient catalyst was found to be the catalyst that contained 20%wt. GO, which allowed the removal of IC to reach 96.6%. The results of the catalytic tests indicated a strong correlation between catalytic activity and textural properties as well as the basicity of the catalysts.
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Affiliation(s)
- Octavian Dumitru Pavel
- Department of Inorganic Chemistry, Organic Chemistry, Biochemistry and Catalysis, Faculty of Chemistry, University of Bucharest, 4-12 Regina Elisabeta Bd., 030018 Bucharest, Romania
- Research Center for Catalysts & Catalytic Processes, Faculty of Chemistry, University of Bucharest, 4-12 Regina Elisabeta Bd., 030018 Bucharest, Romania
| | - Alexandra-Elisabeta Stamate
- Department of Inorganic Chemistry, Organic Chemistry, Biochemistry and Catalysis, Faculty of Chemistry, University of Bucharest, 4-12 Regina Elisabeta Bd., 030018 Bucharest, Romania
- Research Center for Catalysts & Catalytic Processes, Faculty of Chemistry, University of Bucharest, 4-12 Regina Elisabeta Bd., 030018 Bucharest, Romania
| | - Rodica Zăvoianu
- Department of Inorganic Chemistry, Organic Chemistry, Biochemistry and Catalysis, Faculty of Chemistry, University of Bucharest, 4-12 Regina Elisabeta Bd., 030018 Bucharest, Romania
- Research Center for Catalysts & Catalytic Processes, Faculty of Chemistry, University of Bucharest, 4-12 Regina Elisabeta Bd., 030018 Bucharest, Romania
| | - Anca Cruceanu
- Department of Inorganic Chemistry, Organic Chemistry, Biochemistry and Catalysis, Faculty of Chemistry, University of Bucharest, 4-12 Regina Elisabeta Bd., 030018 Bucharest, Romania
- Research Center for Catalysts & Catalytic Processes, Faculty of Chemistry, University of Bucharest, 4-12 Regina Elisabeta Bd., 030018 Bucharest, Romania
| | - Alina Tirsoaga
- Research Center for Catalysts & Catalytic Processes, Faculty of Chemistry, University of Bucharest, 4-12 Regina Elisabeta Bd., 030018 Bucharest, Romania
| | - Ruxandra Bîrjega
- National Institute for Lasers, Plasma and Radiation Physics, 409 Atomistilor Street, 077125 Măgurele, Romania
| | - Ioana Andreea Brezeștean
- National Institute for Research and Development of Isotopic and Molecular Technologies, 67-103 Donat Street, 400293 Cluj-Napoca, Romania
| | - Alexandra Ciorîță
- National Institute for Research and Development of Isotopic and Molecular Technologies, 67-103 Donat Street, 400293 Cluj-Napoca, Romania
- Electron Microscopy Centre, Faculty of Biology and Geology, Babes-Bolyai University, 44 Republicii Street, 400015 Cluj-Napoca, Romania
| | - Daniela Cristina Culiță
- Ilie Murgulescu Institute of Physical Chemistry, 202 Splaiul Independentei, 060021 Bucharest, Romania
| | - Ana Paula Soares Dias
- CERENA, Instituto Superior Técnico, Universidade de Lisboa, 1 Rovisco Pais Av., 1049-001 Lisboa, Portugal
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Layered Double Hydroxide/Nanocarbon Composites as Heterogeneous Catalysts: A Review. CHEMENGINEERING 2022. [DOI: 10.3390/chemengineering6040045] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
The synthesis and applications of composites based on layered double hydroxides (LDHs) and nanocarbons have recently seen great development. On the one hand, LDHs are versatile 2D compounds that present a plethora of applications, from medicine to energy conversion, environmental remediation, and heterogeneous catalysis. On the other, nanocarbons present unique physical and chemical properties owing to their low-dimensional structure and sp2 hybridization of carbon atoms, which endows them with excellent charge carrier mobility, outstanding mechanical strength, and high thermal conductivity. Many reviews described the applications of LDH/nanocarbon composites in the areas of energy and photo- and electro-catalysis, but there is still scarce literature on their latest applications as heterogeneous catalysts in chemical synthesis and conversion, which is the object of this review. First, the properties of the LDHs and of the different types of carbon materials involved as building blocks of the composites are summarized. Then, the synthesis methods of the composites are described, emphasizing the parameters allowing their properties to be controlled. This highlights their great adaptability and easier implementation. Afterwards, the application of LDH/carbon composites as catalysts for C–C bond formation, higher alcohol synthesis (HAS), oxidation, and hydrogenation reactions is reported and discussed in depth.
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Ce-Containing MgAl-Layered Double Hydroxide-Graphene Oxide Hybrid Materials as Multifunctional Catalysts for Organic Transformations. MATERIALS 2021; 14:ma14237457. [PMID: 34885609 PMCID: PMC8659285 DOI: 10.3390/ma14237457] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/25/2021] [Revised: 11/24/2021] [Accepted: 12/01/2021] [Indexed: 02/04/2023]
Abstract
The combination of layered double hydroxides (LDH) with graphene oxide (GO) enables the formation of nanohybrids with improved properties. This work focuses on the structural and catalytic properties of Ce-containing MgAl LDH-GO composites bearing different concentrations of GO in the range of 5-25 wt.%. The synthesis of the composites was performed by co-precipitating the LDH phase in the presence of GO, while their characterization was performed using XRF, XRD, DRIFT, Raman, SEM, nitrogen adsorption-desorption, and acidity-basicity measurements. The LDH-GO composites, showing redox, basic, and acid catalytic functions, were tested in two different types of organic transformations: (i) Knoevenagel condensation and (ii) one-pot cascade oxidation-Knoevenagel condensation. (i) The cinnamic acid was synthesized by the Knoevenagel condensation of benzaldehyde with diethylmalonate. The composites showed catalytic performances in strong contrast to neat LDH or GO, suggesting a synergistic interaction between the two components. During Knoevenagel condensation, the catalytic activity increased with the GO content in the hybrids up to 15 wt.% and decreased afterwards. (ii) 2-Benzoyl-3-phenylacrylonitrile was synthesized by the aerobic oxidation of benzyl alcohol followed by the Knoevenagel condensation with benzoyl acetonitrile using three different non-polar solvents, i.e., toluene, benzene, and mesitylene. The conversion of benzyl alcohol was higher for the hybrid materials compared to the individual components but decreased with the increase of the graphene oxide concentration.
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Stamate AE, Zăvoianu R, Pavel OD, Birjega R, Matei A, Dumitru M, Brezeștean I, Osiac M, Marcu IC. The Influence of the Preparation Method on the Physico-Chemical Properties and Catalytic Activities of Ce-Modified LDH Structures Used as Catalysts in Condensation Reactions. Molecules 2021; 26:6191. [PMID: 34684773 PMCID: PMC8537870 DOI: 10.3390/molecules26206191] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2021] [Revised: 10/10/2021] [Accepted: 10/12/2021] [Indexed: 11/22/2022] Open
Abstract
Mechanical activation and mechanochemical reactions are the subjects of mechanochemistry, a special branch of chemistry studied intensively since the 19th century. Herein, we comparably describe two synthesis methods used to obtain the following layered double hydroxide doped with cerium, Mg3Al0.75Ce0.25(OH)8(CO3)0.5·2H2O: the mechanochemical route and the co-precipitation method, respectively. The influence of the preparation method on the physico-chemical properties as determined by multiple techniques such as XRD, SEM, EDS, XPS, DRIFT, RAMAN, DR-UV-VIS, basicity, acidity, real/bulk densities, and BET measurements was also analyzed. The obtained samples, abbreviated HTCe-PP (prepared by co-precipitation) and HTCe-MC (prepared by mechanochemical method), and their corresponding mixed oxides, Ce-PP (resulting from HTCe-PP) and Ce-MC (resulting from HTCe-MC), were used as base catalysts in the self-condensation reaction of cyclohexanone and two Claisen-Schmidt condensations, which involve the reaction between an aromatic aldehyde and a ketone, at different molar ratios to synthesize compounds with significant biologic activity from the flavonoid family, namely chalcone (1,3-diphenyl-2-propen-1-one) and flavone (2-phenyl-4H-1benzoxiran-4-one). The mechanochemical route was shown to have indisputable advantages over the co-precipitation method for both the catalytic activity of the solids and the costs.
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Affiliation(s)
- Alexandra-Elisabeta Stamate
- Department of Organic Chemistry, Biochemistry and Catalysis, Faculty of Chemistry, University of Bucharest, 030018 Bucharest, Romania; (A.-E.S.); (O.D.P.)
- Research Center for Catalysts and Catalytic Processes, Faculty of Chemistry, University of Bucharest, 030018 Bucharest, Romania
| | - Rodica Zăvoianu
- Department of Organic Chemistry, Biochemistry and Catalysis, Faculty of Chemistry, University of Bucharest, 030018 Bucharest, Romania; (A.-E.S.); (O.D.P.)
- Research Center for Catalysts and Catalytic Processes, Faculty of Chemistry, University of Bucharest, 030018 Bucharest, Romania
| | - Octavian Dumitru Pavel
- Department of Organic Chemistry, Biochemistry and Catalysis, Faculty of Chemistry, University of Bucharest, 030018 Bucharest, Romania; (A.-E.S.); (O.D.P.)
- Research Center for Catalysts and Catalytic Processes, Faculty of Chemistry, University of Bucharest, 030018 Bucharest, Romania
| | - Ruxandra Birjega
- National Institute for Lasers, Plasma and Radiation Physics, 077125 Magurele, Romania; (R.B.); (A.M.); (M.D.)
| | - Andreea Matei
- National Institute for Lasers, Plasma and Radiation Physics, 077125 Magurele, Romania; (R.B.); (A.M.); (M.D.)
| | - Marius Dumitru
- National Institute for Lasers, Plasma and Radiation Physics, 077125 Magurele, Romania; (R.B.); (A.M.); (M.D.)
| | - Ioana Brezeștean
- National Institute for R&D of Isotopic and Molecular Technologies, 400293 Cluj-Napoca, Romania;
- Biomolecular Physics Department, Faculty of Physics, Babes-Bolyai University, 400084 Cluj-Napoca, Romania
| | - Mariana Osiac
- Department of Physics, INCESA, University of Craiova, 200585 Craiova, Romania;
| | - Ioan-Cezar Marcu
- Department of Organic Chemistry, Biochemistry and Catalysis, Faculty of Chemistry, University of Bucharest, 030018 Bucharest, Romania; (A.-E.S.); (O.D.P.)
- Research Center for Catalysts and Catalytic Processes, Faculty of Chemistry, University of Bucharest, 030018 Bucharest, Romania
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Jain S, Kumar S, Lamba BY, Patra J, Mahindroo N. Nanocatalysts: Applications in synthesis of chalcones – a review. SYNTHETIC COMMUN 2020. [DOI: 10.1080/00397911.2020.1817941] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Affiliation(s)
- Sapna Jain
- Department of Applied Sciences and Humanities, School of Engineering, University of Petroleum and Energy Studies, Dehradun, Uttarakhand, India
| | - Sanjeev Kumar
- Department of Applied Sciences and Humanities, School of Engineering, University of Petroleum and Energy Studies, Dehradun, Uttarakhand, India
| | - Bhawna Yadav Lamba
- Department of Applied Sciences and Humanities, School of Engineering, University of Petroleum and Energy Studies, Dehradun, Uttarakhand, India
| | - Jeevan Patra
- School of Health Sciences, University of Petroleum and Energy Studies, Dehradun, Uttarakhand, India
| | - Neeraj Mahindroo
- School of Health Sciences, University of Petroleum and Energy Studies, Dehradun, Uttarakhand, India
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