Photocatalytic Solar Hydrogen Generation by SWCNT-Supported Nickel Oxide Nanoparticles Wrapped by Polypyrrole

被引:1
作者
Chakraborty, Prasenjit [1 ]
Sarkar, Arundhati [2 ]
Ahamed, S. K. Taheruddin [3 ]
Mondal, Anup [3 ]
Kargupta, Kajari [2 ]
Banerjee, Dipali [1 ]
机构
[1] Indian Inst Engn Sci & Technol, Dept Phys, Howrah 711103, India
[2] Jadavpur Univ, Dept Chem Engn, Kolkata 700032, India
[3] Indian Inst Engn Sci & Technol, Dept Chem, Howrah 711103, India
来源
ACS APPLIED ENGINEERING MATERIALS | 2024年 / 2卷 / 08期
关键词
polypyrrole; nickel oxide; single-walled carbonnanotube; noble metal free; solar fuel; photocatalytic hydrogen evolution; WALLED CARBON NANOTUBES; CHARGE-TRANSFER; GRAPHENE OXIDE; CUPROUS-OXIDE; WATER; EFFICIENT; COMPOSITE; EVOLUTION; NANOCOMPOSITES; POLYANILINE;
D O I
10.1021/acsaenm.4c00233
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
High-performance and noble metal-free green hydrogen generation from water by photocatalysis is a reliable and sustainable approach to solving energy and environmental problems. We report a study on a hybrid nanocomposite photocatalyst of polypyrrole (PPy), nickel [nickel oxide (NiO)], and single-walled carbon nanotubes (SWCNTs) that was produced cost-effectively. The optimal design of the catalyst with the incorporation of 4 wt % of SWCNTs is sensitive to the crystallite size and lattice strain, which tune the optical energy gap for solar irradiation activity. Also, NiO acts as a conducting channel between the PPy-coated SWCNTs, facilitating high charge transportability. The photoexcited charge separation efficiency is accelerated in the presence of SWCNTs. Finally, cooperative agreement on the energy levels of the individual component promotes remarkable hydrogen (H-2) generation, harnessing the full band spectrum of simulated sunlight in the presence of only 1 vol % methanol as a photosensitizer. The solar H-2 evolution rate is improved by factors of 22.4 and 5.6 compared to that of the pristine PPy and PPy-NiO (PNC0) hybrid. This work delivers a facile and simple approach to developing a highly efficient noble metal-free carbon-based organic-inorganic composite system for solar photocatalytic H-2 generation.
引用
收藏
页码:2055 / 2068
页数:14
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