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author:

He, Zuoli (He, Zuoli.) [1] | Kim, Chuhyung (Kim, Chuhyung.) [2] | Lin, Lihua (Lin, Lihua.) [3] | Jeon, Tae Hwa (Jeon, Tae Hwa.) [4] | Lin, Sen (Lin, Sen.) [5] (Scholars:林森) | Wang, Xinchen (Wang, Xinchen.) [6] (Scholars:王心晨) | Choi, Wonyong (Choi, Wonyong.) [7]

Indexed by:

EI Scopus SCIE

Abstract:

Many recent advances in creating heterostructures based on 2D materials have opened new possibilities in catalysis. This study prepared a new 2D hybrid photocatalyst (CBN-x) consisting of CN and h-BN using low-cost precursors (urea and boric acid). The effects of CN loading on the structure, surface chemistry and photocatalytic activities were systematically investigated. The photocatalytic activities of CBN-x samples were tested for the production of H-2 and H2O2, which demonstrated markedly enhanced activities without the need of noble metal co-catalysts. However, CBN-x activities for the photocatalytic oxidation of organic compound were not better than that of h-BN. Loading CN on h-BN sheets, C 2p and N 2p orbitals from CN introduce new valence and conduction band edges, which gradually narrowed the bandgap and enhanced light absorption efficiency of the hybrid photocatalysts. In such metal-free systems, electrons generated in CN transfer to h-BN, while photo-generated holes on h-BN transfer to CN, which enhances the charge separation through the heterojunction interface (CN/BN). Therefore, increasing the CN loading enhances the overall efficiency of photocatalysis until excessive loading of CN covers the active sites on h-BN.

Keyword:

Boron nitride Carbon nitride H-2 production Photocatalysts Semiconductor hybrids

Community:

  • [ 1 ] [He, Zuoli]Pohang Univ Sci & Technol POSTECH, Div Environm Sci & Engn, Pohang 37673, South Korea
  • [ 2 ] [Kim, Chuhyung]Pohang Univ Sci & Technol POSTECH, Div Environm Sci & Engn, Pohang 37673, South Korea
  • [ 3 ] [Jeon, Tae Hwa]Pohang Univ Sci & Technol POSTECH, Div Environm Sci & Engn, Pohang 37673, South Korea
  • [ 4 ] [Choi, Wonyong]Pohang Univ Sci & Technol POSTECH, Div Environm Sci & Engn, Pohang 37673, South Korea
  • [ 5 ] [He, Zuoli]Pohang Univ Sci & Technol POSTECH, Dept Chem Engn, Pohang 37673, South Korea
  • [ 6 ] [Kim, Chuhyung]Pohang Univ Sci & Technol POSTECH, Dept Chem Engn, Pohang 37673, South Korea
  • [ 7 ] [Jeon, Tae Hwa]Pohang Univ Sci & Technol POSTECH, Dept Chem Engn, Pohang 37673, South Korea
  • [ 8 ] [Choi, Wonyong]Pohang Univ Sci & Technol POSTECH, Dept Chem Engn, Pohang 37673, South Korea
  • [ 9 ] [Lin, Lihua]Fuzhou Univ, Coll Chem, State Key Lab Photocatalysis Energy & Environm, Fuzhou 350002, Fujian, Peoples R China
  • [ 10 ] [Lin, Sen]Fuzhou Univ, Coll Chem, State Key Lab Photocatalysis Energy & Environm, Fuzhou 350002, Fujian, Peoples R China
  • [ 11 ] [Wang, Xinchen]Fuzhou Univ, Coll Chem, State Key Lab Photocatalysis Energy & Environm, Fuzhou 350002, Fujian, Peoples R China

Reprint 's Address:

  • 王心晨

    [Choi, Wonyong]Pohang Univ Sci & Technol POSTECH, Div Environm Sci & Engn, Pohang 37673, South Korea;;[Choi, Wonyong]Pohang Univ Sci & Technol POSTECH, Dept Chem Engn, Pohang 37673, South Korea;;[Wang, Xinchen]Fuzhou Univ, Coll Chem, State Key Lab Photocatalysis Energy & Environm, Fuzhou 350002, Fujian, Peoples R China

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Source :

NANO ENERGY

ISSN: 2211-2855

Year: 2017

Volume: 42

Page: 58-68

1 3 . 1 2

JCR@2017

1 6 . 8 0 0

JCR@2023

ESI Discipline: MATERIALS SCIENCE;

ESI HC Threshold:306

JCR Journal Grade:1

CAS Journal Grade:1

Cited Count:

WoS CC Cited Count: 159

SCOPUS Cited Count: 170

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count:

Chinese Cited Count:

30 Days PV: 1

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