Highly efficient solar photocatalytic degradation of a textile dye by TiO2/graphene quantum dots nanocomposite
نویسندگان
چکیده
Herein, two sunlight responsive photocatalysts including TiO2 nanoparticles (NPs) and TiO2/graphene quantum dots (GQDs) nanocomposite for degrading a textile dye, Reactive Black 5 (RB5), were prepared. The results showed that 100% of 50 ppm RB5 could be degraded by NPs TiO2/GQDs within 60 30 min irradiation, respectively. Hence, much better photocatalytic activity in degradation was achieved under irradiation compared with pure due to its lower band gap (2.13 eV) electron/hole recombination rate. mechanism elucidated adding some scavengers the solution. main reactive species contributing surface hydroxyl radicals. first-order solar rate constant is greater than illumination.
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ژورنال
عنوان ژورنال: Photochemical and Photobiological Sciences
سال: 2021
ISSN: ['1474-9092', '1474-905X']
DOI: https://doi.org/10.1007/s43630-020-00005-7