Journal of Materials Science

, Volume 55, Issue 10, pp 4238–4250 | Cite as

2D/2D WO3·H2O/g-C3N4 heterostructured assemblies for enhanced photocatalytic water decontamination via strong interfacial contact

  • Longfei Li
  • Daixun Jiang
  • Xilu Wu
  • Xun Sun
  • Xiaofei Qu
  • Liang ShiEmail author
  • Fanglin DuEmail author
Chemical routes to materials


A strong interfacial contact of heterostructured photocatalysts plays a key role in charges migration, thus promoting photocatalytic performance. Benefiting from the unique two-dimensional (2D) morphology and abundant terminals, 2D/2D “face-to-face” WO3·H2O/g-C3N4 heterostructured self-assemblies were fabricated employing tungsten oxide hydrate (WO3·H2O) nanoplates and graphitic carbon nitride (g-C3N4) sheets as precursors. Compared to pristine WO3·H2O and g-C3N4, the binary WO3·H2O/g-C3N4 heterostructures exhibit excellent photocatalytic performance towards water decontamination, using organic dye rhodamine B/methyl orange as probes. It is found that WO3·H2O/g-C3N4 with 20 wt% mass ratio (WHC-20) possesses the best photocatalytic activities, with about 3.05 times higher than that of pristine g-C3N4. The remarkable increase performance is attributed to the enhanced evolution of superoxide radicals (·O2) via photoreduction in adsorbed oxygen molecules (O2), which are promoted by efficient Z-scheme charges separation and rapid electrons transfer at 2D/2D interface. Given the low-cost, facile synthetic procedure and recycling stability, the heterostructured WO3·H2O/g-C3N4 could be served as a promising photocatalyst to deal with water contamination.



This work was financially supported by Key Research and Development Plan of Shandong Province (No. 2018GGX102036), a Project of Shandong Province Higher Educational Science and Technology Program (No. J18KA011) and Doctoral Found of QUST (No. 010022803).

Compliance with ethical standards

Conflict of interest

The authors declare that there are no conflicts of interest regarding the publication of this article.


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Authors and Affiliations

  1. 1.College of Materials Science and EngineeringQingdao University of Science and TechnologyQingdaoChina

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