Journal
CHEMICAL ENGINEERING JOURNAL
Volume 420, Issue -, Pages -Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.cej.2021.130372
Keywords
Photocatalysis; water splitting; hydrogen evolution; cobalt monoxide
Categories
Funding
- National Natural Science Foundation of China [21773053]
- Advanced Talents Incubation Program of Hebei University [801260201019]
- HighPerformance Computing Center of Hebei University
Ask authors/readers for more resources
In this study, a low-cost and environmentally friendly photocatalyst was developed using a simple calcination process with natural materials, achieving high hydrogen evolution rate. The hybrid structure of cobalt ingredients is essential for excellent photocatalytic performance, reducing the free energy for hydrogen adsorption and facilitating H2 production.
Developing photocatalysts with high efficiency and low cost for water splitting is significant in the production of hydrogen using solar energy. In this report, a low-cost and environmentally-friendly photocatalyst (Co-CN-500) is achieved through a simple calcination procedure with natural chitin and cobalt nitrate as raw materials. With Eosin Y as photosensitizer in triethanolamine (TEOA) solution, the hydrogen evolution rate of Co-CN-500 can reach 12.63 mmol g-1 h-1, which is higher than that of commercial Pt-C (10.34 mmol g-1 h-1) and other reported cobalt-containing photocatalysts. Characterization results prove the hybrid structure of cobalt ingredients involving cobalt monoxide and metal cobalt is essential for excellent photocatalytic performance. DFT calculations confirm the free energy of hydrogen adsorption and work function on Co/CoO hybrid surface are smaller than on Co (111) and CoO (111), making it easier to form adsorbed H that then produce H2.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available