Chinese Journal of Catalysis ›› 2024, Vol. 63: 234-243.DOI: 10.1016/S1872-2067(24)60098-7

• Articles • Previous Articles     Next Articles

Engineering the coordination structure of Cu for enhanced photocatalytic production of C1 chemicals from glucose

Lulu Suna,1, Shiyang Liua,b,1, Taifeng Liuc,*(), Dongqiang Leib,d, Nengchao Luoa,*(), Feng Wanga,b   

  1. aState Key Laboratory of Catalysis, Dalian National Laboratory for Clean Energy, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, Liaoning, China
    bUniversity of Chinese Academy of Sciences, Beijing 100049, China
    cNational & Local Joint Engineering Research Center for Applied Technology of Hybrid Nanomaterials Collaborative Innovation Center of Nano Functional Materials and Applications of Henan Province, Henan University, Kaifeng 475004, Henan, China
    dInstitute of Electrical Engineering, Chinese Academy of Sciences, Beijing 100190, China
  • Received:2024-05-07 Accepted:2024-07-01 Online:2024-08-18 Published:2024-08-19
  • Contact: *E-mail: ncluo@dicp.ac.cn (N. Luo), tfliu@vip.henu.edu.cn (T. Liu).
  • About author:

    1Contributed equally to this work.

  • Supported by:
    National Key R&D Program of China(2022YFA1504904);National Natural Science Foundation of China(22025206);National Natural Science Foundation of China(21991090);National Natural Science Foundation of China(22172157);Dalian Innovation Support Plan for High Level Talents(2022RG13);DICP(Grant: DICP I202116);Youth Innovation Promotion Association (YIPA) of the Chinese Academy of Sciences(2023192);Joint Fund of the Yulin University and the Dalian National Laboratory for Clean Energy(YLU-DNL Fund 2021019)

Abstract:

Photocatalytic decomposition of sugars is a promising way of providing H2, CO, and HCOOH as sustainable energy vectors. However, the production of C1 chemicals requires the cleavage of robust C-C bonds in sugars with concurrent production of H2, which remains challenging. Here, the photocatalytic activity for glucose decomposition to HCOOH, CO (C1 chemicals), and H2 on Cu/TiO2 was enhanced by nitrogen doping. Owing to nitrogen doping, atomically dispersed and stable Cu sites resistant to light irradiation are formed on Cu/TiO2. The electronic interaction between Cu and nitrogen ions originates valence band structure and defect levels composed of N 2p orbit, distinct from undoped Cu/TiO2. Therefore, the lifetime of charge carriers is prolonged, resulting in the production of C1 chemicals and H2 with productivities 1.7 and 2.1 folds that of Cu/TiO2. This work provides a strategy to design coordinatively stable Cu ions for photocatalytic biomass conversion.

Key words: Cu photocatalyst, Coordination structure, Biomass, C-C bond, C1 chemicals