Acta Phys. -Chim. Sin. ›› 2026, Vol. 42 ›› Issue (10): 100264.doi: 10.1016/j.actphy.2026.100264

• ARTICLE • Previous Articles     Next Articles

Hierarchical ZIF-derived carbon/Bi12O17Cl2 heterostructures synergistically enhance electron dynamics and optical properties to boost CO2 photoreduction in pure water

Yunhan Gao1, Xing Sun2, Mengxia Ji1,*(), Xingchang Qiu1, Tiange Wei1, Qing Xu2, Sheng Yin2, Jiexiang Xia2,*(), Huaming Li1,*()   

  1. 1 Institute for Energy Research, Jiangsu University, Zhenjiang 212013, Jiangsu Province, China
    2 School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, Jiangsu Province, China
  • Received:2025-12-03 Revised:2026-02-16 Accepted:2026-02-25 Published:2026-09-03
  • Contact: Email: jmx@ujs.edu.cn (Mengxia Ji)xjx@ujs.edu.cn (Jiexiang Xia)lihm@ujs.edu.cn (Huaming Li)

Abstract:

Conventional Bi12O17Cl2 photocatalyst suffer from narrow solar harvesting, weak CO2 adsorption and poor charge utilization. Herein, an intimate hierarchical heterojunction was constructed by embedding Bi12O17Cl2 ultrathin nanotubes into hierarchical Co-ZIF-derived porous carbon (Co-PC/BOC). Multi-cavity reflection within Co-PC nanocages and localized surface plasmon resonance of in situ generated Co3O4 domains synergistically enhance the light harvest ability of the Co-PC/BOC in the full spectral range. In pure water without any photosensitizers or sacrificial agents, the optimal composite exhibits a CO yield of 34.16 μmol g−1 h−1 with 100% selectivity, 2.9-fold higher than bare BOC. In situ DRIFTS and photo/electrochemical characterizations demonstrate that Co-PC serves as a dual-function platform of plasmonic hot-electron injector and charge separation hub, whereas BOC provide abundant surface sites for *COOH formation and *CO cleavage. Our work highlights the promising potential of metal-organic frameworks and their derivatives in developing efficient artificial photosynthesis systems.

Key words: Bi12O17Cl2 nanotube, MOFs derivative, Charge separation, Plasmon resonance, CO2 photoreduction