View in EDS

3D/2D coral-like C3N5/Ti3C2 MXene Schottky heterojunction for enhanced photocatalytic H2 evolution.

Saved in:
Bibliographic Details
Title: 3D/2D coral-like C3N5/Ti3C2 MXene Schottky heterojunction for enhanced photocatalytic H2 evolution.
Authors: Yu, Pingping1 (AUTHOR), Chen, Shengwang1 (AUTHOR), Wang, Yanyun1 (AUTHOR), Li, Jinghan1 (AUTHOR), Zhang, Zewu1,2 (AUTHOR), Zhao, Shuo1,3 (AUTHOR), Zhang, Yiwei1 (AUTHOR) zhangchem@seu.edu.cn, Zhou, Yuming1 (AUTHOR) ymzhou@seu.edu.cn
Source: International Journal of Hydrogen Energy. Mar2024, Vol. 58, p1266-1276. 11p.
Subjects: Heterojunctions, Silver, Schottky barrier, Band gaps, Hydrogen evolution reactions, Space charge, Analytical chemistry, Charge carriers
Abstract: The C 3 N 5 is broadly applied in photocatalytic conversion owing to its narrow band gap and excellent visible light absorption. Nevertheless, realizing efficient separation of photogenerated charge carriers on C 3 N 5 is still challenging. Herein, a 3D/2D C 3 N 5 /Ti 3 C 2 Schottky heterojunction (PCN/TC) was constructed by combining 3D coral-like C 3 N 5 with Ti 3 C 2 MXene nanosheets through direct electrostatic self-assembly technique. Benefiting from the peculiar structure of C 3 N 5 and the establishment of C 3 N 5 /Ti 3 C 2 Schottky heterojunction, the H 2 evolution yield of the optimized PCN/TC (2581.23 μmol‧g−1‧h−1) is 8.3 and 2.6 times higher than that of bulk C 3 N 5 and coral-like C 3 N 5 , respectively. The mechanism for improving photocatalytic performance is proposed by physical and chemical characterization analysis. Specifically, structural modification of C 3 N 5 resulted in an increase in specific surface area along with a reduction in the diffusion distance of photoexcited electrons. Besides, Ti 3 C 2 possesses enriched active metal sites, further augmenting photocatalytic H 2 production performance. The tight interfacial contact of PCN/TC effectively promotes the photoexcited electrons migration from C 3 N 5 to Ti 3 C 2. Moreover, the formed Schottky barrier constitutes a unidirectional pathway for electron transfer, realizing efficient spatial separation of photogenerated carriers. The research offers a novel approach to producing C 3 N 5 -based efficient photocatalysts for photoconversion applications. [Display omitted] • Coral-like C 3 N 5 /Ti 3 C 2 Schottky heterojunction is constructed. • Coral-like C 3 N 5 improves the specific surface area and reduces the charge transport distance. • C 3 N 5 /Ti 3 C 2 interfacial Schottky heterojunction accelerates space charge separation. • Ti 3 C 2 nanosheets with functional groups possess plentiful active sites. • The mechanism for improving photocatalytic performance is elucidated. [ABSTRACT FROM AUTHOR]
Copyright of International Journal of Hydrogen Energy is the property of Pergamon Press - An Imprint of Elsevier Science 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
Header DbId: egs
DbLabel: Engineering Source
An: 175642281
AccessLevel: 6
PubType: Academic Journal
PubTypeId: academicJournal
PreciseRelevancyScore: 0
IllustrationInfo
Items – Name: Title
  Label: Title
  Group: Ti
  Data: 3D/2D coral-like C3N5/Ti3C2 MXene Schottky heterojunction for enhanced photocatalytic H2 evolution.
– Name: Author
  Label: Authors
  Group: Au
  Data: <searchLink fieldCode="AR" term="%22Yu%2C+Pingping%22">Yu, Pingping</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Chen%2C+Shengwang%22">Chen, Shengwang</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Wang%2C+Yanyun%22">Wang, Yanyun</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Li%2C+Jinghan%22">Li, Jinghan</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Zhang%2C+Zewu%22">Zhang, Zewu</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Zhao%2C+Shuo%22">Zhao, Shuo</searchLink><relatesTo>1,3</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Zhang%2C+Yiwei%22">Zhang, Yiwei</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> zhangchem@seu.edu.cn</i><br /><searchLink fieldCode="AR" term="%22Zhou%2C+Yuming%22">Zhou, Yuming</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> ymzhou@seu.edu.cn</i>
– Name: TitleSource
  Label: Source
  Group: Src
  Data: <searchLink fieldCode="JN" term="%22International+Journal+of+Hydrogen+Energy%22">International Journal of Hydrogen Energy</searchLink>. Mar2024, Vol. 58, p1266-1276. 11p.
– Name: Subject
  Label: Subjects
  Group: Su
  Data: <searchLink fieldCode="DE" term="%22Heterojunctions%22">Heterojunctions</searchLink><br /><searchLink fieldCode="DE" term="%22Silver%22">Silver</searchLink><br /><searchLink fieldCode="DE" term="%22Schottky+barrier%22">Schottky barrier</searchLink><br /><searchLink fieldCode="DE" term="%22Band+gaps%22">Band gaps</searchLink><br /><searchLink fieldCode="DE" term="%22Hydrogen+evolution+reactions%22">Hydrogen evolution reactions</searchLink><br /><searchLink fieldCode="DE" term="%22Space+charge%22">Space charge</searchLink><br /><searchLink fieldCode="DE" term="%22Analytical+chemistry%22">Analytical chemistry</searchLink><br /><searchLink fieldCode="DE" term="%22Charge+carriers%22">Charge carriers</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: The C 3 N 5 is broadly applied in photocatalytic conversion owing to its narrow band gap and excellent visible light absorption. Nevertheless, realizing efficient separation of photogenerated charge carriers on C 3 N 5 is still challenging. Herein, a 3D/2D C 3 N 5 /Ti 3 C 2 Schottky heterojunction (PCN/TC) was constructed by combining 3D coral-like C 3 N 5 with Ti 3 C 2 MXene nanosheets through direct electrostatic self-assembly technique. Benefiting from the peculiar structure of C 3 N 5 and the establishment of C 3 N 5 /Ti 3 C 2 Schottky heterojunction, the H 2 evolution yield of the optimized PCN/TC (2581.23 μmol‧g−1‧h−1) is 8.3 and 2.6 times higher than that of bulk C 3 N 5 and coral-like C 3 N 5 , respectively. The mechanism for improving photocatalytic performance is proposed by physical and chemical characterization analysis. Specifically, structural modification of C 3 N 5 resulted in an increase in specific surface area along with a reduction in the diffusion distance of photoexcited electrons. Besides, Ti 3 C 2 possesses enriched active metal sites, further augmenting photocatalytic H 2 production performance. The tight interfacial contact of PCN/TC effectively promotes the photoexcited electrons migration from C 3 N 5 to Ti 3 C 2. Moreover, the formed Schottky barrier constitutes a unidirectional pathway for electron transfer, realizing efficient spatial separation of photogenerated carriers. The research offers a novel approach to producing C 3 N 5 -based efficient photocatalysts for photoconversion applications. [Display omitted] • Coral-like C 3 N 5 /Ti 3 C 2 Schottky heterojunction is constructed. • Coral-like C 3 N 5 improves the specific surface area and reduces the charge transport distance. • C 3 N 5 /Ti 3 C 2 interfacial Schottky heterojunction accelerates space charge separation. • Ti 3 C 2 nanosheets with functional groups possess plentiful active sites. • The mechanism for improving photocatalytic performance is elucidated. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of International Journal of Hydrogen Energy is the property of Pergamon Press - An Imprint of Elsevier Science 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.)
PLink https://search.ebscohost.com/login.aspx?direct=true&site=eds-live&db=egs&AN=175642281
RecordInfo BibRecord:
  BibEntity:
    Identifiers:
      – Type: doi
        Value: 10.1016/j.ijhydene.2024.01.272
    Languages:
      – Code: eng
        Text: English
    PhysicalDescription:
      Pagination:
        PageCount: 11
        StartPage: 1266
    Subjects:
      – SubjectFull: Heterojunctions
        Type: general
      – SubjectFull: Silver
        Type: general
      – SubjectFull: Schottky barrier
        Type: general
      – SubjectFull: Band gaps
        Type: general
      – SubjectFull: Hydrogen evolution reactions
        Type: general
      – SubjectFull: Space charge
        Type: general
      – SubjectFull: Analytical chemistry
        Type: general
      – SubjectFull: Charge carriers
        Type: general
    Titles:
      – TitleFull: 3D/2D coral-like C3N5/Ti3C2 MXene Schottky heterojunction for enhanced photocatalytic H2 evolution.
        Type: main
  BibRelationships:
    HasContributorRelationships:
      – PersonEntity:
          Name:
            NameFull: Yu, Pingping
      – PersonEntity:
          Name:
            NameFull: Chen, Shengwang
      – PersonEntity:
          Name:
            NameFull: Wang, Yanyun
      – PersonEntity:
          Name:
            NameFull: Li, Jinghan
      – PersonEntity:
          Name:
            NameFull: Zhang, Zewu
      – PersonEntity:
          Name:
            NameFull: Zhao, Shuo
      – PersonEntity:
          Name:
            NameFull: Zhang, Yiwei
      – PersonEntity:
          Name:
            NameFull: Zhou, Yuming
    IsPartOfRelationships:
      – BibEntity:
          Dates:
            – D: 08
              M: 03
              Text: Mar2024
              Type: published
              Y: 2024
          Identifiers:
            – Type: issn-print
              Value: 03603199
          Numbering:
            – Type: volume
              Value: 58
          Titles:
            – TitleFull: International Journal of Hydrogen Energy
              Type: main
ResultId 1