Full metadata record
DC Field | Value | Language |
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dc.contributor.author | Biswas, Shubham | - |
dc.contributor.author | Lee, Ha-Young | - |
dc.contributor.author | Prasad, Manohar | - |
dc.contributor.author | Sharma, Abhishek | - |
dc.contributor.author | Yu, Jong-Sung | - |
dc.contributor.author | Sengupta, Siddhartha | - |
dc.contributor.author | Pathak, Devendra Deo | - |
dc.contributor.author | Sinhamahapatra, Apurba | - |
dc.date.accessioned | 2021-10-05T08:00:03Z | - |
dc.date.available | 2021-10-05T08:00:03Z | - |
dc.date.created | 2021-06-14 | - |
dc.date.issued | 2021-05 | - |
dc.identifier.issn | 2574-0970 | - |
dc.identifier.uri | http://hdl.handle.net/20.500.11750/15395 | - |
dc.description.abstract | A cocatalyst plays an essential role in photoassisted hydrogen generation, and it is an almost inevitable component of a photocatalyst. Costly noble metal (e.g., Pt) cocatalysts exhibit almost irreplaceable efficiencies, and finding a suitable replacement is a challenging proposition. Controlled synthesis of a nanoparticle cocatalyst on semiconductors at the nanoscale level is one of the most promising approaches to accomplish the Pt equivalent activity. Herein, a photodeposited metallic Ni-based cocatalyst containing a small amount of Pt (<2 atom % with respect to Ni) on reduced/black TiO2-x is introduced. The developed cocatalyst (2.21 wt % Ni and 0.094 wt % Pt with respect to TiO2-x) exhibits better charge separation efficiency and photoassisted hydrogen generation rate than an only-Pt (0.91 wt %) cocatalyst from methanol-water. The rates are 69 and 3.1 mmol g-1 h-1 for a Ni-based cocatalyst, while 65 and 2.5 mmol g-1 h-1 for a Pt cocatalyst, respectively, under ultraviolet-visible and visible light. A small amount of Pt ensures the photodeposition of Ni nanoparticles adjacent to Pt nanoparticles, enhancing the charge migration from the reduced TiO2-x surface for hydrogen evolution. It is found that in the absence of Pt, the photodeposited Ni(OH)2 is obtained instead of metallic Ni nanoparticles, which exhibits a comparatively low hydrogen generation rate. The present study opens an alternative way to cocatalyst design and fabrication by the controlled synthesis of nanoparticles for a wide range of photocatalytic conversions facilitated by enhanced charge separation. © 2021 American Chemical Society. | - |
dc.language | English | - |
dc.publisher | American Chemical Society | - |
dc.title | Black TiO2- xNanoparticles Decorated with Ni Nanoparticles and Trace Amounts of Pt Nanoparticles for Photocatalytic Hydrogen Generation | - |
dc.type | Article | - |
dc.identifier.doi | 10.1021/acsanm.0c03484 | - |
dc.identifier.wosid | 000657373800018 | - |
dc.identifier.scopusid | 2-s2.0-85106503257 | - |
dc.identifier.bibliographicCitation | ACS Applied Nano Materials, v.4, no.5, pp.4441 - 4451 | - |
dc.description.isOpenAccess | FALSE | - |
dc.subject.keywordAuthor | black TiO2- x | - |
dc.subject.keywordAuthor | hydrogen | - |
dc.subject.keywordAuthor | nanoparticle cocatalyst | - |
dc.subject.keywordAuthor | nickel | - |
dc.subject.keywordAuthor | photodeposition | - |
dc.subject.keywordAuthor | platinum | - |
dc.subject.keywordPlus | Oxide minerals | - |
dc.subject.keywordPlus | Platinum | - |
dc.subject.keywordPlus | Synthesis (chemical) | - |
dc.subject.keywordPlus | TiO2 nanoparticles | - |
dc.subject.keywordPlus | Titanium dioxide | - |
dc.subject.keywordPlus | Charge separations | - |
dc.subject.keywordPlus | Controlled synthesis | - |
dc.subject.keywordPlus | Hydrogen evolution | - |
dc.subject.keywordPlus | Hydrogen generations | - |
dc.subject.keywordPlus | Nanoscale levels | - |
dc.subject.keywordPlus | Ni Nanoparticles | - |
dc.subject.keywordPlus | Photocatalytic hydrogen | - |
dc.subject.keywordPlus | Pt nanoparticles | - |
dc.subject.keywordPlus | Hydrogen production | - |
dc.subject.keywordPlus | Efficiency | - |
dc.subject.keywordPlus | Metal nanoparticles | - |
dc.subject.keywordPlus | Nickel | - |
dc.citation.endPage | 4451 | - |
dc.citation.number | 5 | - |
dc.citation.startPage | 4441 | - |
dc.citation.title | ACS Applied Nano Materials | - |
dc.citation.volume | 4 | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.relation.journalResearchArea | Science & Technology - Other Topics; Materials Science | - |
dc.relation.journalWebOfScienceCategory | Nanoscience & Nanotechnology; Materials Science, Multidisciplinary | - |
dc.type.docType | Article | - |
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