Sulfone-containing Conjugated Polyimide 2D Nanosheets for Efficient Water Oxidation

Mohd Yusuf Khan, Ibrahim Khan, Mostafa Zeama, Abuzar Khan

Research output: Journal PublicationArticlepeer-review

6 Citations (Scopus)


Water oxidation is a bottleneck in artificial photosynthesis that impedes its practicality for solar energy conversion and utilization. It is highly desired to significantly improve the efficacy of the existing catalysts or to rationally design new catalysts with improved performance. We report a novel conjugated and sulfone containing polyimide as a metal-free photocatalyst synthesized via a two-step method: (i) synthesis of precursor poly(amic acid) (PAA) (ii) solvothermal synthesis of polyimide through thermal imidization. The synthesis of the polyimide photocatalyst was demonstrated by the amide linkage in the FTIR spectrum. The obtained photocatalyst was semicrystalline in nature and possessed sheet-like morphology as illustrated by the diffraction pattern and the electron micrographic images, respectively. The thermogravimetric analysis of the polyimide nanosheets validated a thermally stable structure. The DFT calculations were performed which showed a suitable HOMO band position, favorable for water oxidation. The photoelectrocatalytic (PEC) performance of the polyimide nanosheets evaluated by studying water oxidation reaction without any sacrificial agent under 1-SUN showed enhanced PEC performance and good stability towards water oxidation at 0 V versus SCE.

Original languageEnglish
Pages (from-to)1979-1987
Number of pages9
JournalChemistry - An Asian Journal
Issue number14
Publication statusPublished - 19 Jul 2021
Externally publishedYes


  • Metal-free photocatalyst
  • Nanosheets
  • Polyimide
  • Sulfone containing
  • Water oxidation

ASJC Scopus subject areas

  • Biochemistry
  • General Chemistry
  • Organic Chemistry


Dive into the research topics of 'Sulfone-containing Conjugated Polyimide 2D Nanosheets for Efficient Water Oxidation'. Together they form a unique fingerprint.

Cite this