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Martins AJ, de Cássia F Bezerra R, Saraiva GD, Lima Junior JA, Silva RS, Oliveira AC, Campos AF, Morales MA, Jiménez-Jiménez J, Rodríguez-Castellón E. Effects on structure by spectroscopic investigations, valence state and morphology properties of FeCo-containing SnO 2 catalysts for glycerol valorization to cyclic acetals. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2024; 317:124416. [PMID: 38733915 DOI: 10.1016/j.saa.2024.124416] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/27/2023] [Revised: 03/11/2024] [Accepted: 05/05/2024] [Indexed: 05/13/2024]
Abstract
The effects on the structure, valence state and morphological properties of FeCo-containing SnO2 nanostructured solids were investigated. The physicochemical features were tuned by distinct synthesis routes e.g., sol-gel, coprecipitation and nanocasting, to apply them as catalysts in the glycerol valorization to cyclic acetals. Based on Mössbauer and XPS spectroscopy results, all nanosized FeCoSn solids have Fe-based phases, which contain Co and Sn included in the structure, and well-dispersed Fe3+ and Fe2+ surface active sites. Raman, FTIR and EPR spectroscopies measurements of the spent solids demonstrated structural stability for the sol-gel based solid, which is indeed responsible for the highest catalytic performance, among the nanocasted and coprecipitated counterparts. Morphological and elemental analyses illustrated distinct morphologies and composition on solid surface, depending on the synthesis route. The Fe/Co and Fe/Sn surface ratios are closely related to the catalytic performance. The improved glycerol conversion and selectivities of the solid obtained by sol-gel method was ascribed to the leaching resistance and the Sn action as a structural promoter.
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Affiliation(s)
- Antonio J Martins
- Universidade Federal do Ceará, Campus do Pici-Bloco 940, Departamento de Química Analitica e Físico-Química, Fortaleza, Ceará, Brazil
| | - Rita de Cássia F Bezerra
- Universidade Federal do Ceará, Campus do Pici-Bloco 940, Departamento de Química Analitica e Físico-Química, Fortaleza, Ceará, Brazil
| | - Gilberto D Saraiva
- Faculdade de Educação, Ciências e Letras do Sertão Central, Universidade Estadual do Ceará, Quixadá 63902-098, Ceará, Brazil
| | - José A Lima Junior
- Universidade Federal do Ceará, Departamento de Física, Fortaleza, Ceará, Brazil
| | - Rômulo S Silva
- Universidade Federal do Ceará, Departamento de Física, Fortaleza, Ceará, Brazil
| | - Alcineia C Oliveira
- Universidade Federal do Ceará, Campus do Pici-Bloco 940, Departamento de Química Analitica e Físico-Química, Fortaleza, Ceará, Brazil.
| | - Adriana F Campos
- CETENE, Av. Prof. Luiz Freire, 01, Cidade Universitária, Recife 50740-545, Pernambuco, Brazil
| | - Marco A Morales
- Universidade Federal do Rio Grande do Norte, Departamento de Física Teórica e Experimental, Natal 59078-970, Rio Grande do Norte, Brazil
| | - José Jiménez-Jiménez
- Universidad de Málaga, Departamento de Química Inorgánica, Facultad de Ciencias, 29071, Málaga, Spain
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Kambhu A, Satapanajaru T, Somsamak P, Pengthamkeerati P, Chokejaroenrat C, Muangkaew K, Nonthamit K. Green cleanup of styrene-contaminated soil by carbon-based nanoscale zero-valent iron and phytoremediation: Sunn hemp ( Crotalaria juncea), zinnia ( Zinnia violacea Cav.), and marigold ( Tagetes erecta L. ). Heliyon 2024; 10:e27499. [PMID: 38496887 PMCID: PMC10944241 DOI: 10.1016/j.heliyon.2024.e27499] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2023] [Revised: 02/29/2024] [Accepted: 02/29/2024] [Indexed: 03/19/2024] Open
Abstract
Accidental chemical spills can result in styrene-contaminated soil. Styrene negatively affects human health and the environment. The objective of this study was to remediate styrene-contaminated soil using a combination of activated carbon-based nanoscale zero-valent iron (nZVI-AC) and phytoremediation by sunn hemp (Crotalaria juncea), zinnia (Zinnia violacea Cav.) and marigolds (Tagetes erecta L.). The results showed that all three plant types could potentially increase the removal efficiency of styrene-contaminated soil. At 28 days, all three plants showed complete removal of styrene from the soil with 1 g/kg of nZVI-AC, activated carbon-based nZVI synthesized by tea leaves (Camellia sinensis) (T-nZVI-AC), or activated carbon-based nZVI synthesized by red Thai holy basil (Ocimum tenuiflorum L.) (B-nZVI-AC). However, styrene removal efficiencies of sunn hemp, zinnia, and marigold without carbon-based nZVI were 30%, 67%, and 56%, respectively. Statistical analysis (ANOVA) revealed that the removal efficiencies differed significantly from those of phytoremediation alone. With the same removal efficiency (100%), the biomass of sunn hemp in nano-phytoremediation treatments differed by approximately 55%, whereas the biomass of zinnia differed by >67%, compared with that of the control experiment. For marigold, the difference in biomass was only 30%. Styrene was adsorbed on surface of soil and AC and then further oxidized under air-water-nZVI environment, while phytovolatilization played an important role in transporting the remaining styrene from the contaminated soil to the air. Marigold was used as an alternative plant for the nano-phytoremediation of styrene-contaminated soil because of its sturdy nature, high biomass, tolerance to toxic effects, and ease of cultivation. Remediation of one cubic meter of styrene-contaminated soil by a combination of carbon-based nanoscale zero-valent iron and phytoremediation by marigolds emitted 0.0027 kgCO2/m3.
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Affiliation(s)
- Ann Kambhu
- Department of Environmental Technology and Management, Faculty of Environment, Kasetsart University, Bangkok, 10900 Thailand
| | - Tunlawit Satapanajaru
- Department of Environmental Technology and Management, Faculty of Environment, Kasetsart University, Bangkok, 10900 Thailand
| | - Piyapawn Somsamak
- Department of Environmental Technology and Management, Faculty of Environment, Kasetsart University, Bangkok, 10900 Thailand
| | - Patthra Pengthamkeerati
- Department of Environmental Technology and Management, Faculty of Environment, Kasetsart University, Bangkok, 10900 Thailand
| | - Chanat Chokejaroenrat
- Department of Environmental Technology and Management, Faculty of Environment, Kasetsart University, Bangkok, 10900 Thailand
| | - Kanitchanok Muangkaew
- Department of Environmental Technology and Management, Faculty of Environment, Kasetsart University, Bangkok, 10900 Thailand
| | - Kanthika Nonthamit
- Department of Environmental Technology and Management, Faculty of Environment, Kasetsart University, Bangkok, 10900 Thailand
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Cr-Containing Rare-Earth Substituted Yttrium Iron Garnet Ferrites: Catalytic Properties in the Ethylbenzene Oxidation. Catalysts 2022. [DOI: 10.3390/catal12091033] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
A series of the Cr-containing erbium substituted yttrium iron garnet ferrites (ECYIG) was synthesized with distinct Cr amounts, herein referred to as Y3(Er0.02Fe5Cr1−x)O12, where x refers to Cr amounts from 0 to 0.05. The catalytic performance of the solids was investigated in ethylbenzene oxidation in the presence of hydrogen peroxide to assess the role of Cr and Er present in the YIG garnet lattice for fine chemistry compound production. Raman spectroscopy, HRTEM, EPR and FTIR revealed that the insertion of Er (at a fixed amount of 2%) in dodecahedral sites had a great impact on the catalytic activity of the garnets. Both Er3+ and Y3+ in the lattice simultaneously provided structural stability to the garnet structure in any harsh environment. XPS and EPR indicated that the Cr3+ ions replaced those of Fe3+ located in both octahedral and tetrahedral sites of the YIG garnets. The Cr3+ ions acted as electronic promoter to increase the oxidation rate of the Fe3+ active species responsible for activating the EB molecule. SEM-EDS demonstrated that the solids having Cr amounts lower than 4% experienced the most severe deactivation due to the Cr leaching and strong carbon species adsorption on the surface of the catalysts, which decreased their efficiency in the reaction.
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Li B, Wang M, Wu L, Wang X. Efficient Epoxidation of Styrene Using tert-Butyl Hydroperoxide Promoted by M0.5Cu0.5Co2Ox (M = Ca, Ni, and Cr) Ternary Catalysts. Ind Eng Chem Res 2020. [DOI: 10.1021/acs.iecr.9b06567] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Baitao Li
- Key Laboratory of Fell Cell Technology of Guangdong Province, School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510640, China
| | - Meiling Wang
- Key Laboratory of Fell Cell Technology of Guangdong Province, School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510640, China
| | - Lingmin Wu
- Key Laboratory of Fell Cell Technology of Guangdong Province, School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510640, China
| | - Xiujun Wang
- Key Laboratory of Fell Cell Technology of Guangdong Province, School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510640, China
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Oton LF, Oliveira AC, de Araujo JC, Araujo RS, de Sousa FF, Saraiva GD, Lang R, Otubo L, Carlos da Silva Duarte G, Campos A. Selective catalytic reduction of NOx by CO (CO-SCR) over metal-supported nanoparticles dispersed on porous alumina. ADV POWDER TECHNOL 2020. [DOI: 10.1016/j.apt.2019.11.003] [Citation(s) in RCA: 31] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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Baldovino-Medrano VG, Kartheuser B, Gaigneaux EM. Production and testing of technical catalysts based on MnO2 for the abatement of aromatic volatile compounds at the laboratory and pilot plant scales. Catal Today 2019. [DOI: 10.1016/j.cattod.2019.03.029] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Abstract
Oxides with good catalytic performances and more selectivity to valuable chemicals attract numerous research interests for the oxidation of hydrocarbon fuels. Taking advantage of the nanocasting route, CeFe-based nanocomposites were prepared and characterized to achieve superior stability in the oxidation of cyclic compounds. Adding a third metal (Me = Ni2+, Mn2+/Mn3+ or Co2+/Co3+) to the CeFe-based oxide helped the formation of Ce3+/Ce4+, Fe2+/Fe3+ and active couples in the ternary nanocomposites. The solids having a spherical morphology and good textural properties enabled the formation of promising ternary oxide catalysts for the oxidation of ethylbenzene compared with those of binary and single monoxide nanocomposites. The close contact among the Ce3+/Ce4+ and Fe2+/Fe3+ pairs with Ni2+ species provided the formation of a highly stable CeFeNi catalyst with enhanced performance in the oxidation of cyclic compounds such as ethylbenzene, styrene and benzyl alcohol substrates.
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