Citation: Junxiang SHAO, Qianqian QIU, Kejia ZHU, Ye GAO, Wangkang HAN, Zhiguo GU. Photocatalytic nitrogen reduction performance of Ru-Au bimetallic covalent organic frameworks integrating photosensitizing and catalytic centers[J]. Chinese Journal of Inorganic Chemistry, ;2026, 42(11): 2451-2458. doi: 10.11862/CJIC.20260166 shu

Photocatalytic nitrogen reduction performance of Ru-Au bimetallic covalent organic frameworks integrating photosensitizing and catalytic centers

Junxiang SHAO ¹ ,
Qianqian QIU ¹ ,
Kejia ZHU ¹ ,
Ye GAO ¹ ,
Wangkang HAN ^{1, 2,,} ,
Zhiguo GU ^{1, 2,,}

1.
School of Chemical and Material Engineering, Jiangnan University, Wuxi, Jiangsu 214122, China
2.
Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, Wuxi, Jiangsu 214122, China

Corresponding author: Wangkang HAN, wangkanghan@jiangnan.edu.cn Zhiguo GU, zhiguogu@jiangnan.edu.cn
Received Date: 31 August 2026
Revised Date: 18 September 2026

Figures(4)

Through a functional coupling strategy, the photosensitizing Ru center and catalytically active Au sites were precisely integrated into a covalent organic framework (COF), successfully constructing the Ru-Au bimetallic COF (Ru-Au-COF). Its photocatalytic N₂ reduction performance was systematically studied. Due to the integration of the photosensitizing Ru center, the material exhibited excellent light-harvesting capability. Meanwhile, the high-density loading of catalytically active Au centers provided an effective number of functional sites for N₂ activation. Photocatalytic studies showed that Ru-Au-COF exhibited excellent photocatalytic nitrogen fixation activity, with an ammonia production rate of 231.7 μmol·g^-1·h^-1, which was nearly four times higher compared to the material without Au sites (Ru-COF).
- photocatalysis,
- N₂ reduction,
- metal covalent organic framework,
- bimetallic synergy
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