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Shen Z, Xing X, She Y, Meng H, Niu W, Ren S. Unveiling the Promoting Mechanism of H 2 Activation on CuFeO x Catalyst for Low-Temperature CO Oxidation. Molecules 2024; 29:3347. [PMID: 39064925 PMCID: PMC11279789 DOI: 10.3390/molecules29143347] [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: 05/30/2024] [Revised: 07/11/2024] [Accepted: 07/14/2024] [Indexed: 07/28/2024] Open
Abstract
The effect of H2 activation on the performance of CuFeOx catalyst for low-temperature CO oxidation was investigated. The characterizations of XRD, XPS, H2-TPR, O2-TPD, and in situ DRIFTS were employed to establish the relationship between physicochemical property and catalytic activity. The results showed that the CuFeOx catalyst activated with H2 at 100 °C displayed higher performance, which achieved 99.6% CO conversion at 175 °C. In addition, the H2 activation promoted the generation of Fe2+ species, and more oxygen vacancy could be formation with higher concentration of Oα species, which improved the migration rate of oxygen species in the reaction process. Furthermore, the reducibility of the catalyst was enhanced significantly, which increased the low-temperature activity. Moreover, the in situ DRIFTS experiments revealed that the reaction pathway of CO oxidation followed MvK mechanism at low temperature (<175 °C), and both MvK and L-H mechanism was involved at high temperature. The Cu+-CO and carbonate species were the main reactive intermediates, and the H2 activation increased the concentration of Cu+ species and accelerated the decomposition carbonate species, thus improving the catalytic performance effectively.
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Affiliation(s)
- Zhenghua Shen
- School of Metallurgical Engineering, Xi’an University of Architecture and Technology, Xi’an 710064, China; (Z.S.); (X.X.); (H.M.); (W.N.)
- Metallurgical Engineering Technology Research Center of Shaanxi Province, Xi’an 710055, China
| | - Xiangdong Xing
- School of Metallurgical Engineering, Xi’an University of Architecture and Technology, Xi’an 710064, China; (Z.S.); (X.X.); (H.M.); (W.N.)
- Metallurgical Engineering Technology Research Center of Shaanxi Province, Xi’an 710055, China
| | - Yuan She
- School of Metallurgical Engineering, Xi’an University of Architecture and Technology, Xi’an 710064, China; (Z.S.); (X.X.); (H.M.); (W.N.)
- Metallurgical Engineering Technology Research Center of Shaanxi Province, Xi’an 710055, China
| | - Hao Meng
- School of Metallurgical Engineering, Xi’an University of Architecture and Technology, Xi’an 710064, China; (Z.S.); (X.X.); (H.M.); (W.N.)
- Metallurgical Engineering Technology Research Center of Shaanxi Province, Xi’an 710055, China
| | - Wenkang Niu
- School of Metallurgical Engineering, Xi’an University of Architecture and Technology, Xi’an 710064, China; (Z.S.); (X.X.); (H.M.); (W.N.)
- Metallurgical Engineering Technology Research Center of Shaanxi Province, Xi’an 710055, China
| | - Shan Ren
- College of Materials Science and Engineering, Chongqing University, Chongqing 400044, China
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Blinov A, Gvozdenko A, Golik A, Siddiqui SA, Göğüş F, Blinova A, Maglakelidze D, Shevchenko I, Rebezov M, Nagdalian A. Effect of Mn xO y Nanoparticles Stabilized with Methionine on Germination of Barley Seeds ( Hordeum vulgare L.). NANOMATERIALS (BASEL, SWITZERLAND) 2023; 13:nano13091577. [PMID: 37177122 PMCID: PMC10180524 DOI: 10.3390/nano13091577] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/14/2023] [Revised: 04/28/2023] [Accepted: 05/05/2023] [Indexed: 05/15/2023]
Abstract
The aim of this research was to study the effect of MnxOy nanoparticles stabilized with L-methionine on the morphofunctional characteristics of the barley (Hordeum vulgare L.) crop. MnxOy nanoparticles stabilized with L-methionine were synthesized using potassium permanganate and L-methionine. We established that MnxOy nanoparticles have a diameter of 15 to 30 nm. According to quantum chemical modeling and IR spectroscopy, it is shown that the interaction of MnxOy nanoparticles with L-methionine occurs through the amino group. It is found that MnxOy nanoparticles stabilized with L-methionine have positive effects on the roots and seedling length, as well as the seed germination energy. The effect of MnxOy nanoparticles on Hordeum vulgare L. seeds is nonlinear. At a concentration of 0.05 mg/mL, there was a statistically significant increase in the length of seedlings by 68% compared to the control group. We found that the root lengths of samples treated with MnxOy nanoparticle sols with a concentration of 0.05 mg/mL were 62.8%, 32.7%, and 158.9% higher compared to samples treated with L-methionine, KMnO4, and the control sample, respectively. We have shown that at a concentration of 0.05 mg/mL, the germination energy of seeds increases by 50.0% compared to the control sample, by 10.0% compared to the samples treated with L-methionine, and by 13.8% compared to the samples treated with KMnO4.
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Affiliation(s)
- Andrey Blinov
- Department of Physics and Technology of Nanostructures and Materials, Physical and Technical Faculty, North Caucasus Federal University, 355017 Stavropol, Russia
| | - Alexey Gvozdenko
- Department of Physics and Technology of Nanostructures and Materials, Physical and Technical Faculty, North Caucasus Federal University, 355017 Stavropol, Russia
| | - Alexey Golik
- Department of Physics and Technology of Nanostructures and Materials, Physical and Technical Faculty, North Caucasus Federal University, 355017 Stavropol, Russia
| | - Shahida A Siddiqui
- Department of Biotechnology and Sustainability, Technical University of Munich (TUM), 94315 Straubing, Germany
- German Institute of Food Technologies (DIL e.V.), 49610 D-Quakenbrück, Germany
| | - Fahrettin Göğüş
- Department of Food Engineering, Engineering Faculty, University of Gaziantep, 27310 Gaziantep, Turkey
| | - Anastasiya Blinova
- Department of Physics and Technology of Nanostructures and Materials, Physical and Technical Faculty, North Caucasus Federal University, 355017 Stavropol, Russia
| | - David Maglakelidze
- Department of Physics and Technology of Nanostructures and Materials, Physical and Technical Faculty, North Caucasus Federal University, 355017 Stavropol, Russia
| | - Irina Shevchenko
- Department of Physics and Technology of Nanostructures and Materials, Physical and Technical Faculty, North Caucasus Federal University, 355017 Stavropol, Russia
| | - Maksim Rebezov
- Biophotonics Center, Prokhorov General Physics Institute of the Russian Academy of Science, 119991 Moscow, Russia
- Department of Scientific Research, V. M. Gorbatov Federal Research Center for Food Systems, 109240 Moscow, Russia
| | - Andrey Nagdalian
- Laboratory of Food and Industrial Biotechnology, Faculty of Food Engineering and Biotechnology, North Caucasus Federal University, 355017 Stavropol, Russia
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Investigation of H2 production via an integrated pathway of consecutive CO oxidation and dry methane reforming in the presence of Co3O4@HNTs catalyst. APPLIED NANOSCIENCE 2022. [DOI: 10.1007/s13204-022-02510-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
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