Membrane-Inspired Acidically Stable Dye-Sensitized Photocathode for Solar Fuel Production.
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| Title: | Membrane-Inspired Acidically Stable Dye-Sensitized Photocathode for Solar Fuel Production. |
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| Authors: | Click, Kevin A.1, Beauchamp, Damian R.1, Zhongjie Huang1, Yiying Wu1, Weilin Chen2 |
| Source: | Journal of the American Chemical Society. 2/3/2016, Vol. 138 Issue 4, p1174-1179. 6p. |
| Subjects: | Photoelectrochemical cells, Water electrolysis, Photocathodes, Hydrogen-ion concentration, Photosensitizers |
| Abstract: | Tandem dye-sensitized photoelectrochemical cells (DSPECs) for water splitting are a promising method for sustainable energy conversion but so far have been limited by their lack of aqueous stability and photocurrent mismatch between the cathode and anode. In nature, membrane-enabled subcellular compartmentation is a general approach to control local chemical environments in the cell. The hydrophobic tails of the lipid make the bilayer impermeable to ions and hydrophilic molecules. Herein we report the use of an organic donor-acceptor dye that prevents both dye desorption and semiconductor degradation by mimicking the hydrophobic/hydrophilic properties of lipid bilayer membranes. The dual-functional photosensitizer (denoted as BH4) allows for efficient light harvesting while also protecting the semiconductor surface from protons and water via its hydrophobic π linker. The protection afforded by this membrane-mimicking dye gives this system excellent stability in extremely acidic (pH 0) conditions. The acidic stability also allows for the use of cubane molybdenum-sulfide cluster as the hydrogen evolution reaction (HER) catalyst. This system produces a proton-reducing current of 183 ± 36 μA/cm² (0 V vs NHE with 300 W Xe lamp) for an unprecedented 16 h with no degradation. These results introduce a method for developing high-current, low-pH DSPECs and are a significant move toward practical dye-sensitized solar fuel production. [ABSTRACT FROM AUTHOR] |
| Copyright of Journal of the American Chemical Society is the property of American Chemical Society and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) | |
| Database: | Engineering Source |
| FullText | Text: Availability: 0 |
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| Header | DbId: egs DbLabel: Engineering Source An: 113223801 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
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| Items | – Name: Title Label: Title Group: Ti Data: Membrane-Inspired Acidically Stable Dye-Sensitized Photocathode for Solar Fuel Production. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Click%2C+Kevin+A%2E%22">Click, Kevin A.</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Beauchamp%2C+Damian+R%2E%22">Beauchamp, Damian R.</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Zhongjie+Huang%22">Zhongjie Huang</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Yiying+Wu%22">Yiying Wu</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Weilin+Chen%22">Weilin Chen</searchLink><relatesTo>2</relatesTo> – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22Journal+of+the+American+Chemical+Society%22">Journal of the American Chemical Society</searchLink>. 2/3/2016, Vol. 138 Issue 4, p1174-1179. 6p. – Name: Subject Label: Subjects Group: Su Data: <searchLink fieldCode="DE" term="%22Photoelectrochemical+cells%22">Photoelectrochemical cells</searchLink><br /><searchLink fieldCode="DE" term="%22Water+electrolysis%22">Water electrolysis</searchLink><br /><searchLink fieldCode="DE" term="%22Photocathodes%22">Photocathodes</searchLink><br /><searchLink fieldCode="DE" term="%22Hydrogen-ion+concentration%22">Hydrogen-ion concentration</searchLink><br /><searchLink fieldCode="DE" term="%22Photosensitizers%22">Photosensitizers</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: Tandem dye-sensitized photoelectrochemical cells (DSPECs) for water splitting are a promising method for sustainable energy conversion but so far have been limited by their lack of aqueous stability and photocurrent mismatch between the cathode and anode. In nature, membrane-enabled subcellular compartmentation is a general approach to control local chemical environments in the cell. The hydrophobic tails of the lipid make the bilayer impermeable to ions and hydrophilic molecules. Herein we report the use of an organic donor-acceptor dye that prevents both dye desorption and semiconductor degradation by mimicking the hydrophobic/hydrophilic properties of lipid bilayer membranes. The dual-functional photosensitizer (denoted as BH4) allows for efficient light harvesting while also protecting the semiconductor surface from protons and water via its hydrophobic π linker. The protection afforded by this membrane-mimicking dye gives this system excellent stability in extremely acidic (pH 0) conditions. The acidic stability also allows for the use of cubane molybdenum-sulfide cluster as the hydrogen evolution reaction (HER) catalyst. This system produces a proton-reducing current of 183 ± 36 μA/cm² (0 V vs NHE with 300 W Xe lamp) for an unprecedented 16 h with no degradation. These results introduce a method for developing high-current, low-pH DSPECs and are a significant move toward practical dye-sensitized solar fuel production. [ABSTRACT FROM AUTHOR] – Name: AbstractSuppliedCopyright Label: Group: Ab Data: <i>Copyright of Journal of the American Chemical Society is the property of American Chemical Society and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.) |
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| RecordInfo | BibRecord: BibEntity: Identifiers: – Type: doi Value: 10.1021/jacs.5b07723 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 6 StartPage: 1174 Subjects: – SubjectFull: Photoelectrochemical cells Type: general – SubjectFull: Water electrolysis Type: general – SubjectFull: Photocathodes Type: general – SubjectFull: Hydrogen-ion concentration Type: general – SubjectFull: Photosensitizers Type: general Titles: – TitleFull: Membrane-Inspired Acidically Stable Dye-Sensitized Photocathode for Solar Fuel Production. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Click, Kevin A. – PersonEntity: Name: NameFull: Beauchamp, Damian R. – PersonEntity: Name: NameFull: Zhongjie Huang – PersonEntity: Name: NameFull: Yiying Wu – PersonEntity: Name: NameFull: Weilin Chen IsPartOfRelationships: – BibEntity: Dates: – D: 03 M: 02 Text: 2/3/2016 Type: published Y: 2016 Identifiers: – Type: issn-print Value: 00027863 Numbering: – Type: volume Value: 138 – Type: issue Value: 4 Titles: – TitleFull: Journal of the American Chemical Society Type: main |
| ResultId | 1 |
