In situ synthesis of hierarchical nitrogen-doped MoS2 microsphere with an excellent visible light-driven photocatalytic nitrogen fixation ability

Autor:	Yalkunjan Tursun, Abulikemu Abulizi, Hujiabudula Maimaitizi, Dilinuer Talifu
Rok vydání:	2020
Předmět:	In situ chemistry.chemical_compound Materials science chemistry Chemical engineering Bromide Photocatalysis Nitrogen fixation General Materials Science Nitrogen doped Hydrothermal circulation Visible spectrum Microsphere
Zdroj:	Functional Materials Letters. 13:2051031
ISSN:	1793-7213 1793-6047
DOI:	10.1142/s1793604720510315
Popis:	A photocatalyst of high-performance hierarchical nitrogen-doped MoS2 (N-MoS2) microsphere was fabricated by an in situ hydrothermal method in the presence of cetyltrimethylammonium bromide (CTAB). The as-prepared N-MoS2 microsphere was self-assembled by extremely thin interleaving petals, where CTAB acts as a nucleation site for the formation of the interleaving petals due to the strong interaction between CTA+ and [Formula: see text]. N-MoS2 showed higher N2 fixation ability (101.2 [Formula: see text] mol/g(cat)h) than the non-doped MoS2 under the visible light irradiation, and the improved photocatalytic activity could be ascribed to that the doped N narrows the band gap, and the surface reflecting and scattering effect caused by the hierarchical structure enhance the light adsorption. The trapping experiment of active species was also investigated to evaluate the role of photogenerated electrons in the photocatalytic reaction process. Meanwhile, the possible mechanism for the formation and excellent photocatalytic performance of N-MoS2 microsphere were also presented.
Databáze:	OpenAIRE
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