Phase transition-induced band edge engineering of BiVO
Through phase transition-induced band edge engineering by dual doping with In and Mo, a new greenish BiVO[subscript 4] (Bi[subscript 1-X]In[subscript X]V[subscript 1-X]Mo[subscript X]O[subscript 4]) is developed that has a larger band gap energy than the usual yellow scheelite monoclinic BiVO[subscr...
| Autori principali: | , , , , , , , , |
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| Natura: | Articolo |
| Lingua: | en_US |
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National Academy of Sciences (U.S.)
2017
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| Accesso online: | http://hdl.handle.net/1721.1/108674 https://orcid.org/0000-0001-8345-4937 |
| _version_ | 1826211332433641472 |
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| author | Kang, Hyun Joon Kong, Ki-Jeong Park, Hunmin Lee, Younghye Gleason, Karen K. Lee, Jae Sung Jo, Won Jun Lee, Yun Seog Buonassisi, Anthony |
| author2 | Massachusetts Institute of Technology. Department of Chemical Engineering |
| author_facet | Massachusetts Institute of Technology. Department of Chemical Engineering Kang, Hyun Joon Kong, Ki-Jeong Park, Hunmin Lee, Younghye Gleason, Karen K. Lee, Jae Sung Jo, Won Jun Lee, Yun Seog Buonassisi, Anthony |
| author_sort | Kang, Hyun Joon |
| collection | MIT |
| description | Through phase transition-induced band edge engineering by dual doping with In and Mo, a new greenish BiVO[subscript 4] (Bi[subscript 1-X]In[subscript X]V[subscript 1-X]Mo[subscript X]O[subscript 4]) is developed that has a larger band gap energy than the usual yellow scheelite monoclinic BiVO[subscript 4] as well as a higher (more negative) conduction band than H[superscript +]/H[subscript 2] potential [0 VRHE (reversible hydrogen electrode) at pH 7]. Hence, it can extract H[subscript 2] from pure water by visible light-driven overall water splitting without using any sacrificial reagents. The density functional theory calculation indicates that In[superscript 3+]/Mo[superscript 6+] dual doping triggers partial phase transformation from pure monoclinic BiVO[subscript 4] to a mixture of monoclinic BiVO[subscript 4] and tetragonal BiVO[subscript 4], which sequentially leads to unit cell volume growth, compressive lattice strain increase, conduction band edge uplift, and band gap widening. |
| first_indexed | 2024-09-23T15:04:14Z |
| format | Article |
| id | mit-1721.1/108674 |
| institution | Massachusetts Institute of Technology |
| language | en_US |
| last_indexed | 2024-09-23T15:04:14Z |
| publishDate | 2017 |
| publisher | National Academy of Sciences (U.S.) |
| record_format | dspace |
| spelling | mit-1721.1/1086742022-09-29T12:28:35Z Phase transition-induced band edge engineering of BiVO Kang, Hyun Joon Kong, Ki-Jeong Park, Hunmin Lee, Younghye Gleason, Karen K. Lee, Jae Sung Jo, Won Jun Lee, Yun Seog Buonassisi, Anthony Massachusetts Institute of Technology. Department of Chemical Engineering Massachusetts Institute of Technology. Department of Mechanical Engineering Jo, Won Jun Lee, Yun Seog Buonassisi, Anthony Through phase transition-induced band edge engineering by dual doping with In and Mo, a new greenish BiVO[subscript 4] (Bi[subscript 1-X]In[subscript X]V[subscript 1-X]Mo[subscript X]O[subscript 4]) is developed that has a larger band gap energy than the usual yellow scheelite monoclinic BiVO[subscript 4] as well as a higher (more negative) conduction band than H[superscript +]/H[subscript 2] potential [0 VRHE (reversible hydrogen electrode) at pH 7]. Hence, it can extract H[subscript 2] from pure water by visible light-driven overall water splitting without using any sacrificial reagents. The density functional theory calculation indicates that In[superscript 3+]/Mo[superscript 6+] dual doping triggers partial phase transformation from pure monoclinic BiVO[subscript 4] to a mixture of monoclinic BiVO[subscript 4] and tetragonal BiVO[subscript 4], which sequentially leads to unit cell volume growth, compressive lattice strain increase, conduction band edge uplift, and band gap widening. U.S. Army Research Laboratory (Soldier Nanotechnologies Contract W911NF-13-D-0001) United States. Army Research Office (Soldier Nanotechnologies Contract W911NF-13-D-0001) 2017-05-04T18:40:24Z 2017-05-04T18:40:24Z 2015-10 2015-05 Article http://purl.org/eprint/type/JournalArticle 0027-8424 1091-6490 http://hdl.handle.net/1721.1/108674 Jo, Won Jun et al. “Phase Transition-Induced Band Edge Engineering of BiVO 4 to Split Pure Water under Visible Light.” Proceedings of the National Academy of Sciences 112.45 (2015): 13774–13778. © 2015 National Academy of Sciences https://orcid.org/0000-0001-8345-4937 en_US http://dx.doi.org/10.1073/pnas.1509674112 Proceedings of the National Academy of Sciences of the United States of America Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use. application/pdf National Academy of Sciences (U.S.) National Academy of Sciences (U.S.) |
| spellingShingle | Kang, Hyun Joon Kong, Ki-Jeong Park, Hunmin Lee, Younghye Gleason, Karen K. Lee, Jae Sung Jo, Won Jun Lee, Yun Seog Buonassisi, Anthony Phase transition-induced band edge engineering of BiVO |
| title | Phase transition-induced band edge engineering of BiVO |
| title_full | Phase transition-induced band edge engineering of BiVO |
| title_fullStr | Phase transition-induced band edge engineering of BiVO |
| title_full_unstemmed | Phase transition-induced band edge engineering of BiVO |
| title_short | Phase transition-induced band edge engineering of BiVO |
| title_sort | phase transition induced band edge engineering of bivo |
| url | http://hdl.handle.net/1721.1/108674 https://orcid.org/0000-0001-8345-4937 |
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