Core-Sheath Pt-CeO2/Mesoporous SiO2 Electrospun Nanofibers as Catalysts for the Reverse Water Gas Shift Reaction
Abstract
:1. Introduction
2. Materials and Methods
2.1. Materials
2.2. Fabrication of CeO2 NFs
2.2.1. Preparation of Spinnable Solution
2.2.2. Axial Electrospinning of CeO2
2.3. Synthesis of CeO2NF@SiO2 Core-Sheath Structure
2.3.1. Preparation of Electrospun CeO2 NFs for Sol-Gel Synthesis
2.3.2. Sol-Gel Synthesis of CeO2 NF@SiO2 (CeSi)
2.4. Fabrication of Pt-CeO2 NF@SiO2
2.4.1. Wet Impregnation of Pt on Electrospun CeO2 NF
2.4.2. Preparation of Pre-Synthesized Pt NPs
2.4.3. Loading of Pre-Synthesized Pt on CeO2 NF by Solvothermal Method
2.4.4. Sol-Gel Synthesis of Pt-CeO2@SiO2
2.5. Characterization
2.6. Catalytic Activity Test
3. Results and Discussion
4. Conclusions
Supplementary Materials
Author Contributions
Funding
Data Availability Statement
Acknowledgments
Conflicts of Interest
References
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Sample | Material/Precursor | Preparation Method(s) | Heat Treatment/ Calcination Temperature (°C) | Desired Structure |
---|---|---|---|---|
Com-CeO2 | Commercial CeO2 | - | - | CeO2 powder |
Ce(NO3)3·6H2O/PVP NF | Ce(NO3)3·6H2O/PVP | ES | No | Composite polymer/metal nitrate fibers |
CeO2 NF | CeO2 | Calcination/ Ultrasonication | 600 | CeO2 fibers |
IM-PtCe | [Pt(NH3)4](NO3)2-CeO2 | Wet-impregnation | 150 | Pt-CeO2 fibers |
ST-PtCe | K2PtCl4-CeO2 | Solvothermal deposition | 150 | Pt-CeO2 fibers |
IM-PtCeSi a | IM-PtCeO2-SiO2 | Sol-gel method | 360 | Core-sheath fibers (IM-Pt-CeO2 NF@SiO2) |
ST-PtCeSi a | ST-PtCeO2-SiO2 | Sol-gel method | 360 | Core-sheath fibers (ST-Pt-CeO2 NF@SiO2) |
Catalyst | Structure | Pt Loading | Temperature | GHSV | Ref. | ||
---|---|---|---|---|---|---|---|
%wt | °C | mL gcat−1 h−1 | % | % | |||
Pt-CeO2 NF@SiO2 | Core-sheath NFs | 0.5 | 350 | 66,000 | 9 | ≈99 | This work |
Pt-Al2O3 | Nanoparticles | 0.0125–0.25 | 300 | 80,000 | 9 | >99 | [23] |
Pt-TiO2 | Nanoparticles | 0.025 and 2 | 250 | 80,000 | <2 | 100 | [85] |
Pt-CeO2 | Nanorods | 0.3 | 350 | 72,000 | 8.5 | >98 | [37] |
Pt-TiO2 | Nanoparticles | 0.5 | 400 | 6000 | 15 | ≈98 | [24] |
Pt-CeO2 | Nanoparticles | 1 | 300 | 30,000 | 6.7 | NA | [36] |
Pt/20%CeO2-TiO2 | Nanoparticles | 1 | 300 | 12,000 | 6.5 | NA | [86] |
TiO2-supported Pt | Nanoparticles | 1 | 300 | 12,000 | 20 | NA | [87] |
Pt-CeO2 | NA | 2 | 290 | 600,000 | 20 | NA | [88] |
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Nejadsalim, A.; Bashiri, N.; Godini, H.R.; Oliveira, R.L.; Tufail Shah, A.; Bekheet, M.F.; Thomas, A.; Schomäcker, R.; Gurlo, A.; Görke, O. Core-Sheath Pt-CeO2/Mesoporous SiO2 Electrospun Nanofibers as Catalysts for the Reverse Water Gas Shift Reaction. Nanomaterials 2023, 13, 485. https://doi.org/10.3390/nano13030485
Nejadsalim A, Bashiri N, Godini HR, Oliveira RL, Tufail Shah A, Bekheet MF, Thomas A, Schomäcker R, Gurlo A, Görke O. Core-Sheath Pt-CeO2/Mesoporous SiO2 Electrospun Nanofibers as Catalysts for the Reverse Water Gas Shift Reaction. Nanomaterials. 2023; 13(3):485. https://doi.org/10.3390/nano13030485
Chicago/Turabian StyleNejadsalim, Aidin, Najmeh Bashiri, Hamid Reza Godini, Rafael L. Oliveira, Asma Tufail Shah, Maged F. Bekheet, Arne Thomas, Reinhard Schomäcker, Aleksander Gurlo, and Oliver Görke. 2023. "Core-Sheath Pt-CeO2/Mesoporous SiO2 Electrospun Nanofibers as Catalysts for the Reverse Water Gas Shift Reaction" Nanomaterials 13, no. 3: 485. https://doi.org/10.3390/nano13030485