التفاصيل البيبلوغرافية
| العنوان: |
Efficient production of singlet oxygen via dioxygen activation on Cu0 decorated MoS2 facilitates the elimination of oxytetracycline. |
| المؤلفون: |
Zheng, Xiaoyu1 (AUTHOR), Yang, Yuwei1 (AUTHOR), Yan, Liangguo1 (AUTHOR), Song, Wen1 (AUTHOR), Li, Yanfei1 (AUTHOR), Li, Xuguang1 (AUTHOR) stu_lixg@ujn.edu.cn |
| المصدر: |
Journal of Colloid & Interface Science. Feb2025:Part B, Vol. 679, p656-669. 14p. |
| مصطلحات موضوعية: |
*MOLYBDENUM disulfide, *WATER purification, *COPPER, *POLLUTANTS, *OXYTETRACYCLINE, *REACTIVE oxygen species |
| مستخلص: |
[Display omitted] • OTC was significantly removed in Cu0-F-MoS 2 /air system. • 1O 2 played crucial roles Cu0-F-MoS 2 /air system. • The Cu site on the surface of Cu0-F-MoS 2 absorbs and activates oxygen. • Cu0-F-MoS 2 has good cycling stability and the degradation efficiency of OTC still reaches 80% in five cycles. Molecular oxygen (O 2), a green oxidant, is applied in advanced oxidation processes, which represents one of the current focal points in water treatment research. However, achieving efficient and economical activation of O 2 remains a formidable challenge because of its spin-restricted nature. Herein, zero-valent copper (Cu0) modified molybdenum disulfide (MoS 2) materials were applied as O 2 activators to degrade organic pollutants. The results showed that Cu0-MoS 2 could significantly enhance the activation of O 2 and thus accelerate the removal of oxytetracycline (OTC). Notably, 90.0 % of OTC was eliminated within 20 min in the Cu0-F-MoS 2 (Cu0-Flower-MoS 2) /air system. Quenching experiments, XPS spectra, and DFT calculations confirmed •O 2 − and 1O 2 were pivotal reactive species, with both Mo and Cu playing essential roles. Specially, O 2 was activated by Cu0/Cu+ to generate •O 2 −, then •O 2 − was oxidized by Mo6+ of MoS 2 into 1O 2. This research offers an eco-friendly approach for eliminating organic substances by activating O 2. [ABSTRACT FROM AUTHOR] |
| قاعدة البيانات: |
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