Hybrid bioinorganic approach to solar-to-chemical conversion
Natural photosynthesis harnesses solar energy to convert CO₂ and water to value-added chemical products for sustaining life. We present a hybrid bioinorganic approach to solar-to-chemical conversion in which sustainable electrical and/or solar input drives production of hydrogen from water splitting...
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| Veröffentlicht in: | Proceedings of the National Academy of Sciences - PNAS 2015-09, Vol.112 (37), p.11461-11466 |
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| container_title | Proceedings of the National Academy of Sciences - PNAS |
| container_volume | 112 |
| creator | Nichols, Eva M. Gallagher, Joseph J. Liu, Chong Su, Yude Resasco, Joaquin Yu, Yi Sun, Yujie Yang, Peidong Chang, Michelle C. Y. Chang, Christopher J. |
| description | Natural photosynthesis harnesses solar energy to convert CO₂ and water to value-added chemical products for sustaining life. We present a hybrid bioinorganic approach to solar-to-chemical conversion in which sustainable electrical and/or solar input drives production of hydrogen from water splitting using biocompatible inorganic catalysts. The hydrogen is then used by living cells as a source of reducing equivalents for conversion of CO₂ to the value-added chemical product methane. Using platinum or an earth-abundant substitute, α-NiS, as biocompatible hydrogen evolution reaction (HER) electrocatalysts andMethanosarcina barkerias a biocatalyst for CO₂ fixation, we demonstrate robust and efficient electrochemical CO₂ to CH₄ conversion at up to 86% overall Faradaic efficiency for ≥7 d. Introduction of indium phosphide photocathodes and titanium dioxide photoanodes affords a fully solar-driven system for methane generation from water and CO₂, establishing that compatible inorganic and biological components can synergistically couple light-harvesting and catalytic functions for solar-to-chemical conversion. |
| doi_str_mv | 10.1073/pnas.1508075112 |
| format | Article |
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Using platinum or an earth-abundant substitute, α-NiS, as biocompatible hydrogen evolution reaction (HER) electrocatalysts andMethanosarcina barkerias a biocatalyst for CO₂ fixation, we demonstrate robust and efficient electrochemical CO₂ to CH₄ conversion at up to 86% overall Faradaic efficiency for ≥7 d. 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Y.</creatorcontrib><creatorcontrib>Chang, Christopher J.</creatorcontrib><title>Hybrid bioinorganic approach to solar-to-chemical conversion</title><title>Proceedings of the National Academy of Sciences - PNAS</title><addtitle>Proc Natl Acad Sci U S A</addtitle><description>Natural photosynthesis harnesses solar energy to convert CO₂ and water to value-added chemical products for sustaining life. We present a hybrid bioinorganic approach to solar-to-chemical conversion in which sustainable electrical and/or solar input drives production of hydrogen from water splitting using biocompatible inorganic catalysts. The hydrogen is then used by living cells as a source of reducing equivalents for conversion of CO₂ to the value-added chemical product methane. Using platinum or an earth-abundant substitute, α-NiS, as biocompatible hydrogen evolution reaction (HER) electrocatalysts andMethanosarcina barkerias a biocatalyst for CO₂ fixation, we demonstrate robust and efficient electrochemical CO₂ to CH₄ conversion at up to 86% overall Faradaic efficiency for ≥7 d. Introduction of indium phosphide photocathodes and titanium dioxide photoanodes affords a fully solar-driven system for methane generation from water and CO₂, establishing that compatible inorganic and biological components can synergistically couple light-harvesting and catalytic functions for solar-to-chemical conversion.</description><subject>Carbon Dioxide - chemistry</subject><subject>Catalysis</subject><subject>Electrolysis</subject><subject>Hydrogen - chemistry</subject><subject>Light</subject><subject>Materials Testing</subject><subject>Methane - chemistry</subject><subject>Methanosarcina barkeri - metabolism</subject><subject>Photosynthesis</subject><subject>Physical Sciences</subject><subject>Silicon - chemistry</subject><subject>Solar Energy</subject><subject>Sunlight</subject><subject>Temperature</subject><subject>Water - chemistry</subject><issn>0027-8424</issn><issn>1091-6490</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2015</creationdate><recordtype>article</recordtype><sourceid>EIF</sourceid><recordid>eNpVkU1P3DAQhq0KBAvtuSdQ1BOXwPhzEgkhVagtlZC4cLccx2GNsnawvUj8-2a1y0JPc5hnnpnRS8h3CpcUkF9NweRLKqEBlJSyL2RBoaW1Ei0ckAUAw7oRTByTk5yfAaCVDRyRY6Y4yFbgglzfvXXJ91Xnow8xPZngbWWmKUVjl1WJVY6jSXWJtV26lbdmrGwMry5lH8NXcjiYMbtvu3pKHn__ery9q-8f_vy9_XlfW6F4qRUYK4yyAoH1xjFEJbFXZhga1zjoYEDXdFyhaISgBq1lqu8cM1zwVip-Sm622mndrVxvXSjJjHpKfmXSm47G6_87wS_1U3zVQiJSxFnwYyuIuXidrS_OLuc3grNFU8Yl5e0MXey2pPiydrnolc_WjaMJLq6zpki5ZMgln9GrLWpTzDm5YX8LBb3JRW9y0R-5zBPnn1_Y8-9BzEC1AzaTex1lmuNchKIzcrZFnnOJ6ZNCKAkC-D_p9Z3D</recordid><startdate>20150915</startdate><enddate>20150915</enddate><creator>Nichols, Eva M.</creator><creator>Gallagher, Joseph J.</creator><creator>Liu, Chong</creator><creator>Su, Yude</creator><creator>Resasco, Joaquin</creator><creator>Yu, Yi</creator><creator>Sun, Yujie</creator><creator>Yang, Peidong</creator><creator>Chang, Michelle C. 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| subjects | Carbon Dioxide - chemistry Catalysis Electrolysis Hydrogen - chemistry Light Materials Testing Methane - chemistry Methanosarcina barkeri - metabolism Photosynthesis Physical Sciences Silicon - chemistry Solar Energy Sunlight Temperature Water - chemistry |
| title | Hybrid bioinorganic approach to solar-to-chemical conversion |
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