Citation: Xiao Liu, Hangqi Liu, Qian Wang, Dandan Zheng, Sibo Wang, Masakazu Anpo, Guigang Zhang. Rational synthesis of poly(heptazine imides) nanorod in ternary LiCl/NaCl/KCl for visible light hydrogen production[J]. Chinese Chemical Letters, ;2025, 36(12): 111621. doi: 10.1016/j.cclet.2025.111621 shu

Rational synthesis of poly(heptazine imides) nanorod in ternary LiCl/NaCl/KCl for visible light hydrogen production

Xiao Liu ^a ,
Hangqi Liu ^a ,
Qian Wang ^a ,
Dandan Zheng ^{b, *,} ,
Sibo Wang ^a ,
Masakazu Anpo ^a ,
Guigang Zhang ^{a, *,}

a.
State Key Laboratory of Photocatalysis on Energy and Environment, College of Chemistry, Fuzhou University, Fuzhou 350108, China
b.
College of Environment and Safety Engineering, Fuzhou University, Fuzhou 350108, China

ddzheng@fzu.edu.cn

guigang.zhang@fzu.edu.cn

Received Date: 20 January 2025
Revised Date: 17 July 2025
Accepted Date: 22 July 2025
Available Online: 23 July 2025

Figures(7)

Poly(heptazine imide) (PHI), a new allotrope of heptazine-based carbon nitride, is usually synthesized in the presence of binary molten salts (e.g., LiCl/NaCl, LiCl/KCl, NaCl/KCl) with diverse melting points and solvation abilities. However, the quantum efficiency of PHI for photocatalytic hydrogen production is still extremely restrained. Herein, a series of ternary molten salt mixtures (LiCl/NaCl/KCl) with varying compositions and properties, were employed for the rational control of the polymerization process of PHI and thus optimization in the optical properties, charge separation behaviors, and also photocatalytic performance. The results indicate that the ternary molten salts provide suitable environment for the development of a nanorod morphology, which significantly improves separation of photo-induced charge carriers. Hence, the optimized PHI presents a high apparent quantum yield (AQY = 52.9%) for visible-light driven hydrogen production.
- Poly(heptazine imide),
- Photocatalysis,
- Nanorod,
- Hydrogen production,
- Charge separation
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