Ionic Metal Poly(heptazine Imides) and Single-Atoms Interplay: Engineered Stability and Performance for Photocatalysis, PhotoElectroCatalysis and Organic Synthesis

Diab GAA, Fonseca Reis I, Wang C, Barreto D, Savateev O, Teixeira IF, Jiménez Calvo P (2025)

Publication Status: Submitted

Publication Type: Unpublished / Preprint

Future Publication Type: Journal article

Publication year: 2025

Publisher: ChemRxiv

DOI: 10.26434/chemrxiv-2025-02r3v

Abstract

Poly(heptazine imides) (PHIs), a crystalline subclass of carbon nitrides, have emerged as transformative materials for energy conversion, chemical synthesis, and electrochemical applications. Distinguished by a nitrogen-rich ionic framework, structural stability, and a pseudohexagonal lattice, PHIs serve as ideal platform for single-atom catalysts (SACs), delivering exceptional atomic efficiency, catalytic activity, and selectivity. Their unique structural and electronical properties, including negatively charged sites, promote homogeneous SAC dispersion, enhanced light absorption, and efficient charge transport. Advances in ionothermal synthesis, structural engineering, and heterojunction formation have further elevated their functionality. This review highlights PHIs' versatile applications in photocatalysis, photoelectrocatalysis, and organic photoredox catalysis, specifically water splitting, hydrogen production, oxygen evolution, carbon dioxide reduction, methane oxidation, and ammonia synthesis. By systematically exploring their synthesis, structural properties, and catalytic synergy with SACs, this study underscores PHIs' potential to tackle critical challenges in green technologies, achieving efficiencies comparable to their metal oxide counterparts

Authors with CRIS profile

Izadora Fonseca Reis Lehrstuhl für Chemistry of thin film materials Pablo Jiménez Calvo Lehrstuhl für Chemistry of thin film materials

Involved external institutions

Universidade Federal de São Carlos (UFSCar) / Federal University of São Carlos BR Brazil (BR) The Chinese University of Hong Kong (CUHK) CN China (CN)

How to cite

APA:

Diab, G.A.A., Fonseca Reis, I., Wang, C., Barreto, D., Savateev, O., Teixeira, I.F., & Jiménez Calvo, P. (2025). Ionic Metal Poly(heptazine Imides) and Single-Atoms Interplay: Engineered Stability and Performance for Photocatalysis, PhotoElectroCatalysis and Organic Synthesis. (Unpublished, Submitted).

MLA:

Diab, Gabriel A. A., et al. Ionic Metal Poly(heptazine Imides) and Single-Atoms Interplay: Engineered Stability and Performance for Photocatalysis, PhotoElectroCatalysis and Organic Synthesis. Unpublished, Submitted. 2025.

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