期刊
CATALYSTS
卷 13, 期 6, 页码 -出版社
MDPI
DOI: 10.3390/catal13060983
关键词
photocatalysis; g-C3N4; surface modification; photodegradation; hydrogen evolution
& alpha;-NiS/g-C3N4 nanocomposites were synthesized for photocatalytic hydrogen evolution and tetracycline hydrochloride degradation. The nanocomposites were characterized by various techniques and showed higher performance compared to g-C3N4. The enhanced performance is attributed to the formation of a heterojunction between & alpha;-NiS and g-C3N4.
& alpha;-NiS/g-C3N4 nanocomposites were synthesized and used for photocatalytic hydrogen (H-2) evolution and tetracycline hydrochloride (TC) degradation. The fabricated nanocomposites were characterized by XRD, XPS, SEM, TEM, UV-vis DRS, TRPL, and PEC measurements. Photocatalytic studies show that the hydrogen generation rate of the 15%-& alpha;-NiS/g-C3N4 nanocomposite reaches 4025 & mu;mol & BULL;g(-1)& BULL;h(-1) and TC degradation rate 64.6% within 120 min, both of which are higher than that of g-C3N4. The enhanced performance of the nanocomposite is attributed to the formation of a heterojunction between & alpha;-NiS and g-C3N4 that enhances visible light absorption, promotes the separation and transfer of charges, and inhibits the recombination of carriers. The photocatalytic mechanism of the & alpha;-NiS/g-C3N4 heterojunction nanocomposite is discussed in terms of relevant energy levels and charge transfer processes.
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