Laser-Induced Methanol Decomposition for Ultrafast Hydrogen Production
Methanol (CH3OH) is a liquid hydrogen (H2) source that effectively releases H2 and is convenient for transportation. Traditional thermocatalytic CH3OH reforming reaction is used to produce H2, but this process needs to undergo high reaction temperature (e.g., 200 °C) along with a catalyst and a larg...
| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
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American Association for the Advancement of Science (AAAS)
2023-01-01
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| Series: | Research |
| Online Access: | https://spj.science.org/doi/10.34133/research.0132 |
| _version_ | 1797279657204121600 |
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| author | Weiwei Cao Yinwu Li Bo Yan Zhiping Zeng Pu Liu Zhuofeng Ke Guowei Yang |
| author_facet | Weiwei Cao Yinwu Li Bo Yan Zhiping Zeng Pu Liu Zhuofeng Ke Guowei Yang |
| author_sort | Weiwei Cao |
| collection | DOAJ |
| description | Methanol (CH3OH) is a liquid hydrogen (H2) source that effectively releases H2 and is convenient for transportation. Traditional thermocatalytic CH3OH reforming reaction is used to produce H2, but this process needs to undergo high reaction temperature (e.g., 200 °C) along with a catalyst and a large amount of carbon dioxide (CO2) emission. Although photocatalysis and photothermal catalysis under mild conditions are proposed to replace the traditional thermal catalysis to produce H2 from CH3OH, they still inevitably produce CO2 emissions that are detrimental to carbon neutrality. Here, we, for the first time, report an ultrafast and highly selective production of H2 without any catalysts and no CO2 emission from CH3OH by laser bubbling in liquid (LBL) at room temperature and atmospheric pressure. We demonstrate that a super high H2 yield rate of 33.41 mmol·h−1 with 94.26% selectivity is achieved upon the laser-driven process. This yield is 3 orders of magnitude higher than the best value reported for photocatalytic and photothermal catalytic H2 production from CH3OH to date. The energy conversion efficiency of laser light to H2 and CO can be up to 8.5%. We also establish that the far from thermodynamic equilibrium state with high temperature inside the laser-induced bubble and the kinetic process of rapid quenching of bubbles play crucial roles in H2 production upon LBL. Thermodynamically, the high temperature induced using laser in bubbles ensures fast and efficient release of H2 from CH3OH decomposition. Kinetically, rapidly quenching of laser-induced bubbles can inhibit reverse reaction and can keep the products in the initial stage, which guarantees high selectivity. This study presents a laser-driven ultrafast and highly selective production of H2 from CH3OH under normal conditions beyond catalytic chemistry. |
| first_indexed | 2024-03-07T16:30:10Z |
| format | Article |
| id | doaj.art-1094554f49b14a929bf9989abbccb799 |
| institution | Directory Open Access Journal |
| issn | 2639-5274 |
| language | English |
| last_indexed | 2024-03-07T16:30:10Z |
| publishDate | 2023-01-01 |
| publisher | American Association for the Advancement of Science (AAAS) |
| record_format | Article |
| series | Research |
| spelling | doaj.art-1094554f49b14a929bf9989abbccb7992024-03-03T11:19:49ZengAmerican Association for the Advancement of Science (AAAS)Research2639-52742023-01-01610.34133/research.0132Laser-Induced Methanol Decomposition for Ultrafast Hydrogen ProductionWeiwei Cao0Yinwu Li1Bo Yan2Zhiping Zeng3Pu Liu4Zhuofeng Ke5Guowei Yang6State Key Laboratory of Optoelectronic Materials and Technologies, Nanotechnology Research Center, Sun Yat-sen University, Guangzhou 510275, P. R. China.School of Materials Science and Engineering, Sun Yat-sen University, Guangzhou 510275, P. R. China.State Key Laboratory of Optoelectronic Materials and Technologies, Nanotechnology Research Center, Sun Yat-sen University, Guangzhou 510275, P. R. China.State Key Laboratory of Optoelectronic Materials and Technologies, Nanotechnology Research Center, Sun Yat-sen University, Guangzhou 510275, P. R. China.State Key Laboratory of Optoelectronic Materials and Technologies, Nanotechnology Research Center, Sun Yat-sen University, Guangzhou 510275, P. R. China.School of Materials Science and Engineering, Sun Yat-sen University, Guangzhou 510275, P. R. China.State Key Laboratory of Optoelectronic Materials and Technologies, Nanotechnology Research Center, Sun Yat-sen University, Guangzhou 510275, P. R. China.Methanol (CH3OH) is a liquid hydrogen (H2) source that effectively releases H2 and is convenient for transportation. Traditional thermocatalytic CH3OH reforming reaction is used to produce H2, but this process needs to undergo high reaction temperature (e.g., 200 °C) along with a catalyst and a large amount of carbon dioxide (CO2) emission. Although photocatalysis and photothermal catalysis under mild conditions are proposed to replace the traditional thermal catalysis to produce H2 from CH3OH, they still inevitably produce CO2 emissions that are detrimental to carbon neutrality. Here, we, for the first time, report an ultrafast and highly selective production of H2 without any catalysts and no CO2 emission from CH3OH by laser bubbling in liquid (LBL) at room temperature and atmospheric pressure. We demonstrate that a super high H2 yield rate of 33.41 mmol·h−1 with 94.26% selectivity is achieved upon the laser-driven process. This yield is 3 orders of magnitude higher than the best value reported for photocatalytic and photothermal catalytic H2 production from CH3OH to date. The energy conversion efficiency of laser light to H2 and CO can be up to 8.5%. We also establish that the far from thermodynamic equilibrium state with high temperature inside the laser-induced bubble and the kinetic process of rapid quenching of bubbles play crucial roles in H2 production upon LBL. Thermodynamically, the high temperature induced using laser in bubbles ensures fast and efficient release of H2 from CH3OH decomposition. Kinetically, rapidly quenching of laser-induced bubbles can inhibit reverse reaction and can keep the products in the initial stage, which guarantees high selectivity. This study presents a laser-driven ultrafast and highly selective production of H2 from CH3OH under normal conditions beyond catalytic chemistry.https://spj.science.org/doi/10.34133/research.0132 |
| spellingShingle | Weiwei Cao Yinwu Li Bo Yan Zhiping Zeng Pu Liu Zhuofeng Ke Guowei Yang Laser-Induced Methanol Decomposition for Ultrafast Hydrogen Production Research |
| title | Laser-Induced Methanol Decomposition for Ultrafast Hydrogen Production |
| title_full | Laser-Induced Methanol Decomposition for Ultrafast Hydrogen Production |
| title_fullStr | Laser-Induced Methanol Decomposition for Ultrafast Hydrogen Production |
| title_full_unstemmed | Laser-Induced Methanol Decomposition for Ultrafast Hydrogen Production |
| title_short | Laser-Induced Methanol Decomposition for Ultrafast Hydrogen Production |
| title_sort | laser induced methanol decomposition for ultrafast hydrogen production |
| url | https://spj.science.org/doi/10.34133/research.0132 |
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