Stepwise Reduction and In Situ Loading of Core‐Shelled Pt@Cu Nanocrystals on TiO2–NTs for Highly Active Hydrogen Evolution
Abstract A flexible and mild fabricating protocol, i.e., stepwise reduction and in situ loading route, is proposed to modulate ordered growing and dispersive depositing of Pt@Cu bimetal layered nanostructure on titanium dioxide nanotubes (TiO2‐NTs) via reasonably regulating addition sequence and dos...
| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
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Wiley-VCH
2023-02-01
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| Series: | Advanced Materials Interfaces |
| Subjects: | |
| Online Access: | https://doi.org/10.1002/admi.202201891 |
| _version_ | 1827855412601290752 |
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| author | Binglong Mao Yiming Zhu Dihua Huang Jun Zhang Quanxing Liu Xiang Li Kexing Song |
| author_facet | Binglong Mao Yiming Zhu Dihua Huang Jun Zhang Quanxing Liu Xiang Li Kexing Song |
| author_sort | Binglong Mao |
| collection | DOAJ |
| description | Abstract A flexible and mild fabricating protocol, i.e., stepwise reduction and in situ loading route, is proposed to modulate ordered growing and dispersive depositing of Pt@Cu bimetal layered nanostructure on titanium dioxide nanotubes (TiO2‐NTs) via reasonably regulating addition sequence and dosage for the reactants and additives. Comprehensive characterizations demonstrate that most of the Cu core‐Pt shell nanocrystals with a mean size of 10 nm evenly disperse on the surface of TiO2‐NTs, and a small number of nanocrystals permeate into the nanotubes. In comparison to TiO2‐NTs, the specific surface area declines after loading bimetals, with the pore size distribution shifting from micropores to mesopores. The catalytic activity of the Pt@Cu(x)/TiO2 for hydrolytic hydrogen evolution presents an increasing tendency as the bimetal loadings rise, each surpassing that of the bare bimetal nanocrystals. The H2 generating rate gradually rises with temperature increment. The AB hydrolysis catalyzed by Pt@Cu(9%)/TiO2 at the given temperatures (293–313 K) is affirmed as a first‐order reaction, with apparent activation energy of 28.43 kJ mol−1 and TOF value of 107.27 min−1. The catalyst Pt@Cu(9%)/TiO2 unfolds exceptionally high stability, remaining 91% initial catalytic activity after five cycling use. |
| first_indexed | 2024-03-12T11:50:44Z |
| format | Article |
| id | doaj.art-965b196d47f0449292eda92e09bff24a |
| institution | Directory Open Access Journal |
| issn | 2196-7350 |
| language | English |
| last_indexed | 2024-03-12T11:50:44Z |
| publishDate | 2023-02-01 |
| publisher | Wiley-VCH |
| record_format | Article |
| series | Advanced Materials Interfaces |
| spelling | doaj.art-965b196d47f0449292eda92e09bff24a2023-08-31T09:02:04ZengWiley-VCHAdvanced Materials Interfaces2196-73502023-02-01106n/an/a10.1002/admi.202201891Stepwise Reduction and In Situ Loading of Core‐Shelled Pt@Cu Nanocrystals on TiO2–NTs for Highly Active Hydrogen EvolutionBinglong Mao0Yiming Zhu1Dihua Huang2Jun Zhang3Quanxing Liu4Xiang Li5Kexing Song6Chemical Engineering and Pharmaceutics School Henan University of Science and Technology Luoyang 471003 P. R. ChinaChemical Engineering and Pharmaceutics School Henan University of Science and Technology Luoyang 471003 P. R. ChinaChemical Engineering and Pharmaceutics School Henan University of Science and Technology Luoyang 471003 P. R. ChinaChemical Engineering and Pharmaceutics School Henan University of Science and Technology Luoyang 471003 P. R. ChinaChemical Engineering and Pharmaceutics School Henan University of Science and Technology Luoyang 471003 P. R. ChinaChemical Engineering and Pharmaceutics School Henan University of Science and Technology Luoyang 471003 P. R. ChinaMaterials Science and Engineering School Henan University of Science and Technology Luoyang 471003 P. R. ChinaAbstract A flexible and mild fabricating protocol, i.e., stepwise reduction and in situ loading route, is proposed to modulate ordered growing and dispersive depositing of Pt@Cu bimetal layered nanostructure on titanium dioxide nanotubes (TiO2‐NTs) via reasonably regulating addition sequence and dosage for the reactants and additives. Comprehensive characterizations demonstrate that most of the Cu core‐Pt shell nanocrystals with a mean size of 10 nm evenly disperse on the surface of TiO2‐NTs, and a small number of nanocrystals permeate into the nanotubes. In comparison to TiO2‐NTs, the specific surface area declines after loading bimetals, with the pore size distribution shifting from micropores to mesopores. The catalytic activity of the Pt@Cu(x)/TiO2 for hydrolytic hydrogen evolution presents an increasing tendency as the bimetal loadings rise, each surpassing that of the bare bimetal nanocrystals. The H2 generating rate gradually rises with temperature increment. The AB hydrolysis catalyzed by Pt@Cu(9%)/TiO2 at the given temperatures (293–313 K) is affirmed as a first‐order reaction, with apparent activation energy of 28.43 kJ mol−1 and TOF value of 107.27 min−1. The catalyst Pt@Cu(9%)/TiO2 unfolds exceptionally high stability, remaining 91% initial catalytic activity after five cycling use.https://doi.org/10.1002/admi.202201891ammonia boranecatalytic hydrogen evolutionPt@Cu nanocrystalstepwise reductionTiO 2 nanotube |
| spellingShingle | Binglong Mao Yiming Zhu Dihua Huang Jun Zhang Quanxing Liu Xiang Li Kexing Song Stepwise Reduction and In Situ Loading of Core‐Shelled Pt@Cu Nanocrystals on TiO2–NTs for Highly Active Hydrogen Evolution Advanced Materials Interfaces ammonia borane catalytic hydrogen evolution Pt@Cu nanocrystal stepwise reduction TiO 2 nanotube |
| title | Stepwise Reduction and In Situ Loading of Core‐Shelled Pt@Cu Nanocrystals on TiO2–NTs for Highly Active Hydrogen Evolution |
| title_full | Stepwise Reduction and In Situ Loading of Core‐Shelled Pt@Cu Nanocrystals on TiO2–NTs for Highly Active Hydrogen Evolution |
| title_fullStr | Stepwise Reduction and In Situ Loading of Core‐Shelled Pt@Cu Nanocrystals on TiO2–NTs for Highly Active Hydrogen Evolution |
| title_full_unstemmed | Stepwise Reduction and In Situ Loading of Core‐Shelled Pt@Cu Nanocrystals on TiO2–NTs for Highly Active Hydrogen Evolution |
| title_short | Stepwise Reduction and In Situ Loading of Core‐Shelled Pt@Cu Nanocrystals on TiO2–NTs for Highly Active Hydrogen Evolution |
| title_sort | stepwise reduction and in situ loading of core shelled pt cu nanocrystals on tio2 nts for highly active hydrogen evolution |
| topic | ammonia borane catalytic hydrogen evolution Pt@Cu nanocrystal stepwise reduction TiO 2 nanotube |
| url | https://doi.org/10.1002/admi.202201891 |
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