Carbon-Doped Porous Polymeric Carbon Nitride with Enhanced Visible Light Photocatalytic and Photoelectrochemical Performance

Neeta Karjule, Liel Abisdris, Adi Azoulay, Michael Volokh, Menny Shalom

Research output: Contribution to journalArticlepeer-review

10 Scopus citations


The photocatalytic activity of polymeric carbon nitride (CN) is strongly tied to its surface area, morphology, optical, and electronic properties. Herein, a straightforward approach to adjusting the electronic properties and morphology of CN materials by fine tuning their carbon content while preserving their high surface area is proposed. To do so, supramolecular assemblies based on CN monomers together with an additional carbon-rich monomer that does not participate in the preorganization are calcinated. The use of a supramolecular assembly as the precursor endows the CN material with a high specific surface area and an ordered morphology, whereas the addition of a carbon-rich monomer provides light carbon doping. As a result, the new CN exhibits excellent activity as a photoanode material in photoelectrochemical cells and as a photocatalyst for the hydrogen evolution reaction. Detailed studies reveal that the modified CN samples show enhanced charge carrier transfer and separation efficiency, improved light absorption response, a tunable energy band structure, a higher electrochemical surface area, and better electronic conductivity compared with a reference CN.

Original languageEnglish
Article number2200035
JournalAdvanced Energy and Sustainability Research
Issue number8
StatePublished - 1 Aug 2022


  • carbon nitride
  • photocatalytic hydrogen generation
  • photoelectrochemical cells
  • pollutant degradation
  • supramolecular assemblies

ASJC Scopus subject areas

  • Energy Engineering and Power Technology
  • Ecology
  • Waste Management and Disposal
  • Environmental Science (miscellaneous)


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