Citation: Xinyi MA, Yuhang XIAO, Qian LI, Zihuan YAN, Chengyan LIU, Xiguang GAO, Hongju YIN, Feixiang CHENG. Thienyl metal coordination polymers: Preparation and photocatalytic degradation performance of phenol[J]. Chinese Journal of Inorganic Chemistry, ;2026, 42(5): 969-979. doi: 10.11862/CJIC.20250317 shu

Thienyl metal coordination polymers: Preparation and photocatalytic degradation performance of phenol

Yunnan Key Laboratory of Crystalline Porous Organic Functional Materials, College of Chemistry and Materials Engineering, Qujing Normal University, Qujing, Yunnan 655000, China

Corresponding author: Hongju YIN, yinhongju411@163.com Feixiang CHENG, chengfx2019@163.com
Received Date: 13 October 2025
Revised Date: 2 April 2026

Figures(9)

Two thiophene-containing ligands [5, 5′-di(thiophen-2-yl)-2, 2′-bipyridine (tp-by-tp) and 3, 8-di(thiophen-2-yl)-1, 10-phenanthroline (tp-phen-tp)] were designed and synthesized. These ligands were subsequently coordinated with Co(NO₃)₂·6H₂O and Ni(NO₃)₂·6H₂O to yield three discrete metal complexes: [Co(tp-bpy-tp)₃](NO₃)₂, [Ni(tp-bpy-tp)₃](NO₃)₂, and [Ni(tp-phen-tp)₃](NO₃)₂. Subsequently, metal coordination polymers ([Co(tp-bpy-tp)₃]_n, [Ni(tp-bpy-tp)₃]_n, and [Ni(tp-phen-tp)₃]_n) were synthesized via anhydrous FeCl₃-catalyzed chemical polymerization. Metal complexes exhibited strong absorption between 250 and 500 nm in dichloromethane, ethanol, and acetonitrile, demonstrating effective visible light responsiveness. The photocatalytic degradation efficiency of phenol was systematically evaluated using three polymeric catalysts under simulated phenolic wastewater conditions. The photocatalytic degradation performance of phenol under xenon lamp irradiation for 2 h demonstrated significant efficiency variations among the polymeric catalysts, with degradation rates reaching 74.37% for [Co(tp-bpy-tp)₃]_n, 62.98% for [Ni(tp-bpy-tp)₃]_n, and 83.45% for [Ni(tp-phen-tp)₃]_n, respectively.
- metal coordination polymers,
- photocatalysis,
- phenol degradation
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