Journal article
Devesh Garg, Gabriel Mark, V. Battula, Yotam Engel, Rohit Kumar Saini, Alexander I. Shames, Thamaraichelvan Marichelvam, D. Grave, Michael Volokh, M. Shalom
Small, 2026
Small, 2026
Semantic Scholar
DOI
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APA
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Garg, D., Mark, G., Battula, V., Engel, Y., Saini, R. K., Shames, A. I., … Shalom, M. (2026). Vapor-Phase Synthesis of Potassium-Doped Polymeric Carbon Nitride Photocatalytic Panels. Small.
Chicago/Turabian
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Garg, Devesh, Gabriel Mark, V. Battula, Yotam Engel, Rohit Kumar Saini, Alexander I. Shames, Thamaraichelvan Marichelvam, D. Grave, Michael Volokh, and M. Shalom. “Vapor-Phase Synthesis of Potassium-Doped Polymeric Carbon Nitride Photocatalytic Panels.” Small (2026).
MLA
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Garg, Devesh, et al. “Vapor-Phase Synthesis of Potassium-Doped Polymeric Carbon Nitride Photocatalytic Panels.” Small, 2026.
BibTeX Click to copy
@article{devesh2026a,
title = {Vapor-Phase Synthesis of Potassium-Doped Polymeric Carbon Nitride Photocatalytic Panels.},
year = {2026},
journal = {Small},
author = {Garg, Devesh and Mark, Gabriel and Battula, V. and Engel, Yotam and Saini, Rohit Kumar and Shames, Alexander I. and Marichelvam, Thamaraichelvan and Grave, D. and Volokh, Michael and Shalom, M.}
}
Abstract
Potassium-ion (K+)-doped polymeric carbon nitride (CN) photocatalyst panels (PCPs) with cyano group defects stand out as an easy, low-cost, and scalable strategy for solar-driven chemical transformations, particularly for hydrogen peroxide (H2O2) production via the oxygen reduction reaction (ORR). However, due to the challenges inherent to the synthetic routes, it is almost impossible to grow alkali-metal-doped CN directly on substrates as panels. Here, we introduce a scalable and straightforward vapor-phase condensation and polymerization of CN precursors over KCl-coated substrates, achieving K+ doping and forming stable layers with enhanced light absorption, which results in the successful formation of charge carriers below the undoped CN's band edge. The optimal PCPs exhibit improved H2O2 production, particularly in 100% ethanol, reaching (3.0 ± 0.4) × 102 mM m-2 h-1, ∼18 times higher than control undoped CN PCPs (17 ± 4 mM m-2 h-1) in batch mode. The optimized PCP was evaluated as a large-scale panel (ca. 46 cm2) in a continuous-flow configuration for 96 h, yielding ∼39 mM m- 2 h-1 H2O2 during the first 24 h and demonstrating this configuration's scalability.