Fabrication of NH2-MIL-125(Ti) nanodots on carbon fiber/MoS2-based weavable photocatalysts for boosting the adsorption and photocatalytic performance

Yan Zhang; Wei Cao; Bo Zhu; Jiafeng Cai; Xiaolong Li; Jianshe Liu; Zhigang Chen; Maoquan Li; Lisha Zhang

doi:10.1016/j.jcis.2021.12.073

Fabrication of NH₂-MIL-125(Ti) nanodots on carbon fiber/MoS₂-based weavable photocatalysts for boosting the adsorption and photocatalytic performance

J Colloid Interface Sci. 2022 Apr:611:706-717. doi: 10.1016/j.jcis.2021.12.073. Epub 2021 Dec 16.

Authors

Yan Zhang¹, Wei Cao², Bo Zhu³, Jiafeng Cai², Xiaolong Li², Jianshe Liu², Zhigang Chen⁴, Maoquan Li⁵, Lisha Zhang⁶

Affiliations

¹ Department of Interventional and Vascular Surgery, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai 200072, China; Department of Environmental Engineering, School of Environmental and Geographical Science, Shanghai Normal University, Shanghai 200234, China.
² College of Environmental Science and Engineering, Donghua University, Shanghai 201620, China.
³ College of Materials Science and Engineering, Donghua University, Shanghai 201620, China.
⁴ Department of Interventional and Vascular Surgery, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai 200072, China; College of Materials Science and Engineering, Donghua University, Shanghai 201620, China. Electronic address: zgchen@dhu.edu.cn.
⁵ Department of Interventional and Vascular Surgery, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai 200072, China.
⁶ College of Environmental Science and Engineering, Donghua University, Shanghai 201620, China. Electronic address: lszhang@dhu.edu.cn.

PMID: 34999363
DOI: 10.1016/j.jcis.2021.12.073

Abstract

Metal-organic frameworks (MOFs) are prospective photocatalysts for removing pollutants. However, the large size of MOFs results in unsatisfactory photocatalytic performance, thus restricting their further usage. Herein, ultrasmall Ti MOF (NH₂-MIL-125(Ti)) nanodots (diameter: < 10 nm) were prepared on carbon fiber (CF) (diameter: ∼7 μm) based MoS₂ (thickness: ∼20 nm, length: ∼200 nm) via a facile method and used as an efficient and reusable photocatalyst. The weaved CF/MoS₂/NH₂-MIL-125(Ti) cloth (0.15 g, 4 × 4 cm²) shows good reusability with an easy reusing process. Compared with large size NH₂-MIL-125(Ti) based sample, our well-prepared NH₂-MIL-125(Ti) nanodots based sample shows the improved surface area (290.1 m² g^-1) and it can generate more reactive oxygen species (ROS), which enhance removal performance (81.1% levofloxacin (LVFX), 67.9% acid orange 7 (AO7), 94.3% methylene blue (MB) and 100% Cr(Ⅵ)) in 120 min. Additionally, the recycling test for 4 cycles indicates high stability. This work highlights the function of easy-recyclable NH₂-MIL-125(Ti) nanodots-based heterojunctions in wastewater purification.

Keywords: Carbon fiber; Metal-organic frameworks; MoS(2)/NH(2)-MIL-125(Ti); Nanodots; Redox pollutants.

MeSH terms

Adsorption
Carbon Fiber
Catalysis
Molybdenum*
Prospective Studies
Titanium*

Substances

Carbon Fiber
Molybdenum
Titanium