skip to main content
Language:
Resource type Show Results with: Show Results with: Index

An energy band compactable B-rGO/PbTiO3 p–n junction: a highly dynamic and durable photocatalyst for enhanced photocatalytic H2 evolution

Paramanik, Lekha ; Reddy, K Hemalata ; Parida, K M

Nanoscale, 2019-01, Vol.11 (46), p.22328-22342 [Peer Reviewed Journal]

Cambridge: Royal Society of Chemistry

Full text available

Citations Cited by
  • Title:
    An energy band compactable B-rGO/PbTiO3 p–n junction: a highly dynamic and durable photocatalyst for enhanced photocatalytic H2 evolution
  • Author: Paramanik, Lekha ; Reddy, K Hemalata ; Parida, K M
  • Subjects: Atomic properties ; Boron ; Charge transfer ; Current carriers ; Energy gap ; Graphene ; Heterojunctions ; Hydrogen evolution ; Lead titanates ; Light irradiation ; P-n junctions ; P-type semiconductors ; Photocatalysis ; Photocatalysts ; Photoluminescence ; Raman spectroscopy ; Space charge ; X ray photoelectron spectroscopy
  • Is Part Of: Nanoscale, 2019-01, Vol.11 (46), p.22328-22342
  • Notes: ObjectType-Article-1
    SourceType-Scholarly Journals-1
    ObjectType-Feature-2
    content type line 23
  • Description: Reduced graphene oxide (rGO) intentionally doped with boron atoms is a promising tactic to extract bandgap energy and p-type semiconducting behavior from graphene-based materials. Moreover, the integration of p-type boron-doped rGO with an n-type material through a heterojunction interface exhibits complementary properties to restrict the fast recombination of charge carriers and enhance the photoreaction towards energy applications. Herein, we have prepared boron-doped rGO/PbTiO3 p–n heterojunctions via a hydrothermal method. The successful formation of an excellent p–n heterojunction was demonstrated by TEM, XPS and Raman analysis. The constructed boron-doped rGO/PbTiO3 p–n heterojunctions exhibit dramatic increases in photoelectrochemical and photocatalytic performance due to the presence of a space charge region at the interface of the two materials. The scenario also revealed the double-edge sword functions of B-rGO: the material itself (i) acts as a visible light active photocatalyst with a band gap energy of 2.7 eV and (ii) participates in enhanced charge transfer via the band edge alignment between B-rGO and PbTiO3, as elucidated from photoluminescence and electrochemical impedance studies. Furthermore, the optimal 2B-rGO/PT p–n heterojunction possesses outstanding repeatability and exhibited the highest rate of hydrogen evolution, i.e. 293.79 μmol h−1 under visible light irradiation. The results for these materials may provide advanced insight into the design of next-generation high-efficiency black graphene-based heterojunctions.
  • Publisher: Cambridge: Royal Society of Chemistry
  • Language: English
Back to results list
Go to Previous pagePrevious Result  8 NextGo to Next page

  • Implemented by: ABCD-USP USP   Social Network Logos: Freepik

Searching Remote Databases, Please Wait

  • Searching for
  • inscope:(USP_VIDEOS),scope:("PRIMO"),scope:(USP_FISICO),scope:(USP_EREVISTAS),scope:(USP),scope:(USP_EBOOKS),scope:(USP_PRODUCAO),primo_central_multiple_fe
  • Show me what you have so far