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Kalita A, Talukdar AK. Streamlined synthesis of iron and cobalt loaded MCM-48: High-performance heterogeneous catalysts for selective liquid-phase oxidation of toluene to benzaldehyde. Heliyon 2024; 10:e27296. [PMID: 38510017 PMCID: PMC10950511 DOI: 10.1016/j.heliyon.2024.e27296] [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: 08/18/2023] [Revised: 02/23/2024] [Accepted: 02/27/2024] [Indexed: 03/22/2024] Open
Abstract
Hydrothermal synthesis of MCM-48 molecular sieves featuring the incorporation of both iron and cobalt with Si/M ratios of 20, 40 and 80 (where M represents either iron or cobalt) was performed using tetraethyl orthosilicate as the silica source and cetyltrimethylammonium bromide as a template. To gain a comprehensive understanding of the synthesized materials, these were thoroughly characterized using various techniques, including XRD, XPS, UV-Vis (DRS), FT-IR, N2 adsorption-desorption analysis, SEM with EDX, TEM, TGA and NH3-TPD analysis. XRD analysis revealed the presence of well-ordered MCM-48 structure in the metal-incorporated materials, while XPS and UV-Vis DRS confirmed the successful partial incorporation of metal ions precisely in their desired tetrahedral coordination within the framework. To assess their catalytic performance, we studied the activity and selectivity of these catalysts in liquid phase oxidation of toluene using tert-butyl hydroperoxide as the oxidant. Under optimized conditions, employing a 6% (w/w) Fe-MCM-48 (40) catalyst and maintaining a toluene to oxidant molar ratio of 1:3 at 353 K in a solvent-free environment for 8 h, the oxidation reaction resulted in the formation of benzaldehyde (88.1%) as the major product and benzyl alcohol (11.9%) as the minor product.
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Affiliation(s)
- Arnab Kalita
- Department of Chemistry, Gauhati University, Gopinath Bordoloi Nagar, Jalukbari, Guwahati, Assam, 781014, India
| | - Anup Kumar Talukdar
- Department of Chemistry, Gauhati University, Gopinath Bordoloi Nagar, Jalukbari, Guwahati, Assam, 781014, India
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Hamza M, Altaf AA, Kausar S, Murtaza S, Shahpal A, Hamayun M, Tayyab M, Rizwan K, Shoukat H, Maqsood A. Mesoporous Cu-Doped Manganese Oxide Nano Straws for Photocatalytic Degradation of Hazardous Alizarin Red Dye. ACS OMEGA 2023; 8:35956-35963. [PMID: 37810636 PMCID: PMC10552497 DOI: 10.1021/acsomega.3c03736] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/30/2023] [Accepted: 08/31/2023] [Indexed: 10/10/2023]
Abstract
The present work reports the photocatalytic degradation of alizarin red (AR) using Cu-doped manganese oxide (MH16-MH20) nanomaterials as catalysts under UV light irradiation. Cu-doped manganese oxides were synthesized by a very facile hydrothermal approach and characterized by energy dispersive X-ray spectroscopy, powder X-ray diffraction, scanning electron microscopy, Brunauer-Emmett-Teller analysis, UV-vis spectroscopy, and photoluminescence techniques. The structural, morphological, and optical characterization revealed that the synthesized compounds are nanoparticles (38.20-54.10 nm), grown in high mesoporous density (constant C > 100), possessing a tetragonal phase, and exhibiting 2.98-3.02 eV band gap energies. Synthesized materials were utilized for photocatalytic AR dye degradation under UV light which was monitored by UV-visible spectroscopy and % AR degradation was calculated at various time intervals from absorption spectra. More than 60% AR degradation at various time intervals was obtained for MH16-MH20 indicating their good catalytic efficiencies for AR removal. However, MH20 was found to be the most efficient catalyst showing more than 84% degradation, hence MH20 was used to investigate the effect of various catalytic doses, AR concentrations, and pH of the medium on degradation. More than 50% AR degradation was obtained for all studied parameters with MH20 whereas the pseudo-first-order kinetic model was found to be the best-fitted kinetic model for AR degradation with k = 0.0015 and R2 = 0.99 indicating a significant correlation between experimental data.
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Affiliation(s)
- Muhammad Hamza
- Department
of Chemistry, University of Gujrat, Hafiz Hayat Campus, Gujrat 50700, Pakistan
| | - Ataf Ali Altaf
- Department
of Chemistry, University of Okara, Okara 56300, Pakistan
- Department
of Food Science, College of Agriculture and Life Sciences, Cornell University, Ithaca, New York 14853, United States
| | - Samia Kausar
- Department
of Chemistry, University of Gujrat, Hafiz Hayat Campus, Gujrat 50700, Pakistan
| | - Shahzad Murtaza
- Institute
of Chemistry, Khwaja Fareed UEIT, Rahim Yar Khan 64200, Pakistan
| | - Amen Shahpal
- Department
of Chemistry and Catalysis Research Center, Technical University of Munich, Lichtenbergstrasse 4, Garching 85747, Germany
| | - Muhammad Hamayun
- Department
of Chemistry, University of Gujrat, Hafiz Hayat Campus, Gujrat 50700, Pakistan
| | - Muhammad Tayyab
- Key Laboratory
for Advanced Materials and Institute of Fine Chemicals, School of
Chemistry and Molecular Engineering, East
China University of Science and Technology, Shanghai 200237, China
| | - Komal Rizwan
- Department
of Chemistry, University of Sahiwal, Sahiwal 57000, Pakistan
| | - Hamza Shoukat
- Department
of Chemistry, University of Gujrat, Hafiz Hayat Campus, Gujrat 50700, Pakistan
| | - Anum Maqsood
- Department
of Physics, The University of Lahore, Lahore 53700, Pakistan
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Chang Y, Suo K, Wang Y, Ren X, Cao J. In 2S 3@TiO 2/In 2S 3 Z-Scheme Heterojunction with Synergistic Effect for Enhanced Photocathodic Protection of Steel. Molecules 2023; 28:6554. [PMID: 37764330 PMCID: PMC10536402 DOI: 10.3390/molecules28186554] [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: 08/09/2023] [Revised: 09/05/2023] [Accepted: 09/07/2023] [Indexed: 09/29/2023] Open
Abstract
In this work, a TiO2/In2S3 heterojunction film was successfully synthesized using a one-step hydrothermal method and applied in the photocathodic protection (PCP) of 304SS. The octahedral In2S3 and In2S3@TiO2 nanoparticles combined and coexisted with each other, with In2S3 quantum dots growing on the surface of TiO2 to form In2S3@TiO2 with a wrapping structure. The composite photoelectrode, which includes TiO2 with a mixed crystalline phase and In2S3, exhibited significantly enhanced PCP performance for 304SS compared with pure In2S3 and TiO2. The In2S3@TiO2/In2S3 composites with 0.3 g of P25 titanium dioxide (P25) showed the best protection performance, resulting in a cathodic shift of its OCP coupled with 304SS to -0.664 VAgCl. The electron transfer tracking results demonstrate that In2S3@TiO2/In2S3 forms a Z-scheme heterojunction structure. The enhanced PCP performance could be attributed to the synergistic effect of the mixed crystalline phase and the Z-scheme heterojunction system. The mixed crystalline phase of TiO2 provides more electrons, and these electrons are gathered at higher energy potentials in the Z-scheme system. Additionally, the built-in electric field further promotes the more effective electrons transfer from photoelectrode to the protected metals, thus, leading to enhanced photoelectrochemical cathodic protection of 304SS.
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Affiliation(s)
- Yue Chang
- Institute for Advanced Materials and Technology, University of Science and Technology Beijing, Beijing 100083, China
- National Materials Corrosion and Protection Data Center, University of Science and Technology Beijing, Beijing 100083, China
- BRI Southeast Asia Network for Corrosion and Protection (MOE), Shunde Innovation School, University of Science and Technology Beijing, Foshan 528399, China
| | - Kaili Suo
- Institute for Advanced Materials and Technology, University of Science and Technology Beijing, Beijing 100083, China
| | - Yuhang Wang
- Institute for Advanced Materials and Technology, University of Science and Technology Beijing, Beijing 100083, China
| | - Xiaona Ren
- Institute of Powder Metallurgy and Advanced Ceramics, School of Materials and Engineering, University of Science and Technology Beijing, Beijing 100083, China
| | - Jiangli Cao
- Institute for Advanced Materials and Technology, University of Science and Technology Beijing, Beijing 100083, China
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Salimi-Kenari H, Barari M, Nabavi SR, Mousavi Anjeh A, Hosseini SR. Step by Step Modification of Electrospinning Process to Fabricate Ultra-Fine Dextran Nanofibers. POLYM-PLAST TECH MAT 2023. [DOI: 10.1080/25740881.2022.2113895] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Affiliation(s)
- Hamed Salimi-Kenari
- Department of Chemical Engineering, Faculty of Engineering and Technology, University of Mazandaran, Babolsar Iran
| | - Mehdi Barari
- Department of Chemical Engineering, Faculty of Engineering and Technology, University of Mazandaran, Babolsar Iran
| | - Seyed Reza Nabavi
- Department of Applied Chemistry, Faculty of Chemistry, University of Mazandaran, Babolsar Iran
| | - Atefeh Mousavi Anjeh
- Department of Applied Chemistry, Faculty of Chemistry, University of Mazandaran, Babolsar Iran
| | - Sayed Reza Hosseini
- Department of Applied Chemistry, Faculty of Chemistry, University of Mazandaran, Babolsar Iran
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Chen X, Qin S, Denisov N, Kure-Chu SZ, Schmuki P. Pt-single atom decor ated TiO2: Tuning anodic TiO2 nanotube structure and geometry toward a high-performance photocatalytic H2 production. Electrochim Acta 2023. [DOI: 10.1016/j.electacta.2023.142081] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/25/2023]
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Yousefipour K, Janitabar Darzi S, Iravani E. Schiff base-functionalized mesoporous titania: an efficient sorbent for the removal of radioactive thorium ions from aqueous solution. J Radioanal Nucl Chem 2022. [DOI: 10.1007/s10967-021-08131-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Shoukat H, Altaf AA, Hamayun M, Ullah S, Kausar S, Hamza M, Muhammad S, Badshah A, Rasool N, Imran M. Catalytic Oxidation of Toluene into Benzaldehyde and Benzyl Alcohol Using Molybdenum-Incorporated Manganese Oxide Nanomaterials. ACS OMEGA 2021; 6:19606-19615. [PMID: 34368547 PMCID: PMC8340403 DOI: 10.1021/acsomega.1c02163] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/23/2021] [Accepted: 07/06/2021] [Indexed: 06/13/2023]
Abstract
Oxidation of toluene (an organic pollutant), into useful chemical products, is of great interest nowadays. However, efficient conversion of toluene under mild and sustainable conditions is a thought-provoking task. Here, we report MnMoO4 nanomaterials (CH1-CH2), synthesized through a very facile solvothermal approach. Catalytic efficiencies of MnMoO4 nanomaterials were evaluated by direct oxidation of toluene via C-H activation. Toluene was converted into benzaldehyde and benzyl alcohol in the presence of H2O2 as an oxidant at 80 °C. The reaction parameters, that is, catalyst dose, time, and toluene concentration, were varied to obtain the optimal conditions for the oxidation process. The 40.62% maximum toluene conversion rate was obtained after 18 h of oxidation activity with 0.06 g of catalyst CH1. A maximum of 78% benzaldehyde selectivity was obtained with 0.06 g of catalyst CH1 after 18 h of toluene oxidation activity. Also, 62.33% benzyl alcohol selectivity was achieved using 0.1 g of catalyst CH1 after 1 h of activity. Several catalytic cycles were run with CH1 to evaluate catalyst reusability. Potential % toluene conversion was obtained for up to six cycles and their turnover frequencies were found to be 1.94-1.01 s-1. FTIR spectra of catalyst CH1 before and after recovery indicate no significant change. The good conversion rate of toluene and efficient selectivity toward benzaldehyde and benzyl alcohol indicates the robustness and high potential of these catalysts to oxidize toluene under a milder, greener, and hazardous chlorine-free environment.
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Affiliation(s)
- Hamza Shoukat
- Department of Chemistry, University of Gujrat, Hafiz Hayat Campus, Gujrat 50700, Pakistan
| | - Ataf Ali Altaf
- Department of Chemistry, University of Okara, Okara 56300, Pakistan
- Catalysis and Energy Research Center, University of Okara, Okara 56300, Pakistan
| | - Muhammad Hamayun
- Department of Chemistry, University of Gujrat, Hafiz Hayat Campus, Gujrat 50700, Pakistan
| | - Shaheed Ullah
- Department of Chemistry, University of Okara, Okara 56300, Pakistan
| | - Samia Kausar
- Department of Chemistry, University of Gujrat, Hafiz Hayat Campus, Gujrat 50700, Pakistan
| | - Muhammad Hamza
- Department of Chemistry, University of Gujrat, Hafiz Hayat Campus, Gujrat 50700, Pakistan
| | - Shabbir Muhammad
- Department of Physics, College of Science, King Khalid University, Abha 61413, P.O. Box 9004, Saudi Arabia
| | - Amin Badshah
- Department of Chemistry, Quaid-i-Azam University, Islamabad 45320, Pakistan
| | - Nasir Rasool
- Department of Chemistry, Government College University, Faisalabad 38000, Pakistan
| | - Muhammad Imran
- Department of Chemistry, Faculty of Science, King Khalid University, P.O. Box 9004, Abha 61413, Saudi Arabia
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Kausar S, ul Ain N, Altaf AA, Danish M, Basit A, Lal B, Muhammad S, Badshah A, Muhammad Kashif Javaid H. Electrochemical and thermal catalytic studies of Co based molybdenum oxide nanomaterials for C H bond activation. Inorganica Chim Acta 2021. [DOI: 10.1016/j.ica.2020.120219] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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Catalytic Removal of Alizarin Red Using Chromium Manganese Oxide Nanorods: Degradation and Kinetic Studies. Catalysts 2020. [DOI: 10.3390/catal10101150] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Dye removal through photocatalytic degradation employing nanomaterials as catalysts is a growing research area. In current studies, photocatalytic alizarin red (AR) dye degradation has been investigated by designing a series of Cr based manganese oxide nanomaterials (MH1–MH5). Synthesized nanomaterials were characterized by powder X-ray diffraction, scanning electron microscopy/energy dispersive x-ray, Brunauer–Emmett–Teller, and photoluminescence techniques and were utilized for photocatalytic AR dye degradation under UV light. AR dye degradation was monitored by UV–visible spectroscopy and percent degradation was studied for the effect of time, catalyst dose, different dye concentrations, and different pH values of dye solution. All the catalysts have shown more than 80% dye degradation exhibiting good catalytic efficiencies for dye removal. The catalytic pathway was analyzed by applying the kinetic model. A pseudo second-order model was found the best fitted kinetic model indicating a chemically-rate controlled mechanism. Values of constant R2 for all the factors studied were close to unity depicting a good correlation between experimental data.
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