Citation: Mengjun Zhao, Yuhao Guo, Na Li, Tingjiang Yan. Deciphering the structural evolution and real active ingredients of iron oxides in photocatalytic CO2 hydrogenation[J]. Chinese Journal of Structural Chemistry, ;2024, 43(8): 100348. doi: 10.1016/j.cjsc.2024.100348 shu

Deciphering the structural evolution and real active ingredients of iron oxides in photocatalytic CO2 hydrogenation

Photocatalytic CO2 hydrogenation reactions can produce high-value-added chemicals for industry, solving the environmental problems caused by excessive CO2 emissions. Iron oxides are commonly used in photocatalytic reactions due to their various structures and suitable band gaps. Nevertheless, the structural evolution and real active components during photocatalytic CO2 hydrogenation reaction are rarely studied. Herein, a variety of iron oxides including α-Fe2O3, γ-Fe2O3, Fe3O4, and FeO, were derived from Prussian blue precursors to investigate the CO2 hydrogenation performance, structural evolution and active components. Especially, the typical α-Fe2O3 and γ-Fe2O3 are converted to Fe3O4 during the reaction, while Fe/FexOy remains structurally stable. Meanwhile, it confirmed that Fe3O4 is the main active component for CO production and the formation of hydrocarbons (CH4 and C2-C4) are highly dependent on the Fe/FexOy heterojunctions. The optimal yields of CO, CH4 and C2-C4 hydrocarbons over the best catalyst (FeFe-550) can achieve 4 mmol·g-1·h-1, 350 μmol·g-1·h-1 and 150 μmol·g-1·h-1, respectively, due to its suitable metal/oxide component distribution. This work examines the structural evolution of different iron oxide catalysts in the photocatalytic CO2 hydrogenation reaction, identifies the active components as well as reveals the relationship between components and the products, and offers valuable insights into the efficient utilization of CO2.
- Iron oxides,
- Photocatalysis,
- CO2 hydrogenation,
- Structural evolution
1. [1]
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2. [2]
  Li Li , Fanpeng Chen , Bohang Zhao , Yifu Yu . Understanding of the structural evolution of catalysts and identification of active species during CO₂ conversion. Chinese Chemical Letters, 2024, 35(4): 109240-. doi: 10.1016/j.cclet.2023.109240
3. [3]
  Ziruo Zhou , Wenyu Guo , Tingyu Yang , Dandan Zheng , Yuanxing Fang , Xiahui Lin , Yidong Hou , Guigang Zhang , Sibo Wang . Defect and nanostructure engineering of polymeric carbon nitride for visible-light-driven CO2 reduction. Chinese Journal of Structural Chemistry, 2024, 43(3): 100245-100245. doi: 10.1016/j.cjsc.2024.100245
4. [4]
  Jiaqi Ma , Lan Li , Yiming Zhang , Jinjie Qian , Xusheng Wang . Covalent organic frameworks: Synthesis, structures, characterizations and progress of photocatalytic reduction of CO2. Chinese Journal of Structural Chemistry, 2024, 43(12): 100466-100466. doi: 10.1016/j.cjsc.2024.100466
5. [5]
  Huarui Han , Yangrui Xu , Yu Cheng , Liguang Tang , Jie Jin , Xinlin Liu , Changchang Ma , Ziyang Lu . Frustrated Lewis pairs in CO2 photoreduction: A review on synergistic activation and charge separation. Chinese Journal of Structural Chemistry, 2025, 44(10): 100728-100728. doi: 10.1016/j.cjsc.2025.100728
6. [6]
  Jiangqi Ning , Junhan Huang , Yuhang Liu , Yanlei Chen , Qing Niu , Qingqing Lin , Yajun He , Zheyuan Liu , Yan Yu , Liuyi Li . Alkyl-linked TiO2@COF heterostructure facilitating photocatalytic CO2 reduction by targeted electron transport. Chinese Journal of Structural Chemistry, 2024, 43(12): 100453-100453. doi: 10.1016/j.cjsc.2024.100453
7. [7]
  Na Lu , Tingting Pang , Xuedong Jing , Yongan Zhu , Linqun Yu , Sining Ben , Yuchan Song , Shiwen Du , Wei Lu , Zhenyi Zhang . Optimizing the Schottky Barrier in AuAg Alloy Decorated TiO2 Nanofibers to Enhance Hot-Electron-Induced CO2 Reduction. Chinese Journal of Structural Chemistry, 2025, 44(8): 100633-100633. doi: 10.1016/j.cjsc.2025.100633
8. [8]
  Yanghanbin Zhang , Dongxiao Wen , Wei Sun , Jiahe Peng , Dezhong Yu , Xin Li , Yang Qu , Jizhou Jiang . State-of-the-art evolution of g-C3N4-based photocatalytic applications: A critical review. Chinese Journal of Structural Chemistry, 2024, 43(12): 100469-100469. doi: 10.1016/j.cjsc.2024.100469
9. [9]
  Cui Luo , Peng-Hui Li , Wei-Ming Liao , Qia-Chun Lin , Xiao-Xiang Zhou , Jun He . Strategic metal substitution for enhanced visible-light-driven oxygen evolution in heterometallic MOFs. Chinese Journal of Structural Chemistry, 2025, 44(7): 100621-100621. doi: 10.1016/j.cjsc.2025.100621
10. [10]
  Guixu Pan , Zhiling Xia , Ning Wang , Hejia Sun , Zhaoqi Guo , Yunfeng Li , Xin Li . Preparation of high-efficient donor-π-acceptor system with crystalline g-C3N4 as charge transfer module for enhanced photocatalytic hydrogen evolution. Chinese Journal of Structural Chemistry, 2024, 43(12): 100463-100463. doi: 10.1016/j.cjsc.2024.100463
11. [11]
  Zhen Shi , Wei Jin , Yuhang Sun , Xu Li , Liang Mao , Xiaoyan Cai , Zaizhu Lou . Interface charge separation in Cu2CoSnS4/ZnIn2S4 heterojunction for boosting photocatalytic hydrogen production. Chinese Journal of Structural Chemistry, 2023, 42(12): 100201-100201. doi: 10.1016/j.cjsc.2023.100201
12. [12]
  Weixu Li , Yuexin Wang , Lin Li , Xinyi Huang , Mengdi Liu , Bo Gui , Xianjun Lang , Cheng Wang . Promoting energy transfer pathway in porphyrin-based sp2 carbon-conjugated covalent organic frameworks for selective photocatalytic oxidation of sulfide. Chinese Journal of Structural Chemistry, 2024, 43(7): 100299-100299. doi: 10.1016/j.cjsc.2024.100299
13. [13]
  Qinhui Guan , Yuhao Guo , Na Li , Jing Li , Tingjiang Yan . Molecular sieve-mediated indium oxide catalysts for enhancing photocatalytic CO₂ hydrogenation. Acta Physico-Chimica Sinica, 2025, 41(11): 100133-0. doi: 10.1016/j.actphy.2025.100133
14. [14]
  Xinlong Zheng , Zhongyun Shao , Jiaxin Lin , Qizhi Gao , Zongxian Ma , Yiming Song , Zhen Chen , Xiaodong Shi , Jing Li , Weifeng Liu , Xinlong Tian , Yuhao Liu . Recent advances of CuSbS₂ and CuPbSbS₃ as photocatalyst in the application of photocatalytic hydrogen evolution and degradation. Chinese Chemical Letters, 2025, 36(3): 110533-. doi: 10.1016/j.cclet.2024.110533
15. [15]
  Xiaxi Yao , Xiuli Hu , Fangcheng Huang , Xuhong Wang , Xuekun Hong , Dawei Wang . Improved hydrogen and oxygen evolution rates in Pt@TiO₂@RuO₂ hollow nanoshells through dielectric Mie resonance and spatial cocatalyst separation. Chinese Chemical Letters, 2025, 36(5): 110192-. doi: 10.1016/j.cclet.2024.110192
16. [16]
  Zongyi Huang , Cheng Guo , Quanxing Zheng , Hongliang Lu , Pengfei Ma , Zhengzhong Fang , Pengfei Sun , Xiaodong Yi , Zhou Chen . Efficient photocatalytic biomass-alcohol conversion with simultaneous hydrogen evolution over ultrathin 2D NiS/Ni-CdS photocatalyst. Chinese Chemical Letters, 2024, 35(7): 109580-. doi: 10.1016/j.cclet.2024.109580
17. [17]
  Linyu Zhu , Xu Tian , Guang Shi , Wenchi Zhang , Peisong Tang , Mohamed Bououdina , Sajjad Ali , Pengfei Xia . Assembling 3D cross-linked network by carbon nitride nanowires for visible-light photocatalytic H₂ evolution from dyestuffs wastewater. Chinese Chemical Letters, 2025, 36(12): 111088-. doi: 10.1016/j.cclet.2025.111088
18. [18]
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19. [19]
  Tianhao Li , Wenguang Tu , Zhigang Zou . In situ photocatalytically enhanced thermogalvanic cells for electricity and hydrogen production. Chinese Journal of Structural Chemistry, 2024, 43(1): 100195-100195. doi: 10.1016/j.cjsc.2023.100195
20. [20]
  Shuhong Wu , Wanying Han , Ying Wang , Yan Zhuang , Hui Niu , Lurong Li , Junhui Wang , Yuan Liu , Huan Lin , Kaifeng Wu , Jinni Shen , Yingguang Zhang , Michael K. H. Leung , Jinlin Long . Close π-π stacking facilitated intermolecular charge separation in self-assembled perylene monoimide for photocatalytic hydrogen production. Chinese Journal of Structural Chemistry, 2025, 44(6): 100592-100592. doi: 10.1016/j.cjsc.2025.100592

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