Journal
CHEMICAL ENGINEERING JOURNAL
Volume 412, Issue -, Pages -Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.cej.2021.128646
Keywords
Methanol production; CO2 photoreduction; Z-scheme photocatalyst; NiTiO3; g-C3N4
Categories
Funding
- IndustryAcademia Cooperation Innovation Fund Projects of Jiangsu Province [BY201600409]
- National Natural Science Foundation of China [21908108, 51578288]
- Fundamental Research Funds for the Central Universities [30919011218, 30919011220]
- Jiangsu Province Scientific and Technological Project [BK20180449]
- Jiangsu Province Scientific and Technological Achievements into a Special Fund Project [BA2016055, BA2017095]
- Key Project of Chinese National Programs for Research and Development [2016YFC0203800]
- Project by the Priority Academic Program Development of Jiangsu Higher Education Institutions
- Topnotch Academic Programs Project of Jiangsu Higher Education Institutions
- Open Fund for Large Instruments and Equipments of Nanjing University of Science and Technology
Ask authors/readers for more resources
A direct Z-scheme NiTiO3/g-C3N4 photocatalyst was constructed to enhance the photoreduction efficiency of CO2, showing improved photoactivity and reusability. This work may offer a novel approach for the design and manufacture of Z-scheme photocatalysts for energy conversion and environmental remediation.
Photocatalytic CO2 reduction to fuels is recognized as a favorable solution to solve the energy crisis and greenhouse effect simultaneously. Herein, to improve the photoreduction efficiency of CO2, a direct Z-scheme NiTiO3/g-C3N4 (NT/GCN) photocatalyst is constructed by a facile calcination method. The highest yield of CH3OH (13.74.mol.g(-1).h(-1)) can be obtained at the optimized NT/GCN40 without any sacrificial agent and cocatalyst, almost 3.29 times higher compared with g-C3N4. Simultaneously, mechanism study by the band potential estimation and electron spin resonance (ESR) analysis provide evidences that the enhanced photoactivity is ascribed to the Z-scheme. This unique structure can enhance the spatial separation of hole-electron pairs, suppress the recombination of charge carriers and remain the strong redox ability. Moreover, this direct Z-scheme NT/GCN40 composite shows good reusability. This work may present a novel way for the design and manufacture of Z-scheme photocatalysts for energy conversion and environmental remediation.
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