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- Title
Sulfone‐containing Conjugated Polyimide 2D Nanosheets for Efficient Water Oxidation.
- Authors
Khan, Mohd Yusuf; Khan, Ibrahim; Zeama, Mostafa; Khan, Abuzar
- Abstract
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.
- Subjects
OXIDATION of water; POLYIMIDES; NANOSTRUCTURED materials; CATALYSTS; SOLAR energy conversion; ARTIFICIAL photosynthesis; AMIC acids
- Publication
Chemistry - An Asian Journal, 2021, Vol 16, Issue 14, p1979
- ISSN
1861-4728
- Publication type
Article
- DOI
10.1002/asia.202100392