Journal
APPLIED SURFACE SCIENCE
Volume 514, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.apsusc.2020.145789
Keywords
TiO2; Pre-radiation grafting; Hydrophilic monomers; Cr (VI) ion; Adsorption-photocatalytic reduction
Categories
Funding
- National Key R&D Program of China [2018YFA0703700]
- National Natural Science Foundation of China [11405050, 21302150]
- Project of the Science and Technology Department of Hubei Province [2018AFB150]
- Science Development Foundation of Hubei University of Science Technology [2020TD01, 201819KZ05]
- Nuclear Technology Key Subject Project of Hubei University of Science Technology [2019-20KZ01]
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A novel and enhanced adsorption-photocatalytic reduction performances of Cr (VI) photocatalyst on TiO2-g-GMA/NMG (noted as: TGN) was prepared by pre-radiation grafting and ring-opening reaction with Glycidyl methacrylate (GMA) and N-methyl glucamine (NMG). The surface and microstructure properties of photocatalyst were manifested by FTIR, TG, XRD, DRS, XPS, BET and contact angle. Morphologies of TGN were characterized further by FE-SEM and HR-TEM. The highly activity of TGN was tested by the reduction of Cr (VI) into Cr (III) in aqueous medium under mixed light. The results showed that the TGN (NMG:18%, 60 kGy) also had a highest removal rate (81.8%) of Cr (VI) only for 1 h at [Cr(VI)] = 10 ppm, [TGN] = 10 mg/50 mL and pH = 3.0. In addition, the adsorption-photocatalytic reduction mechanism of Cr (VI) by TGN consisted of three processes was proposed. Generally, this TGN complex photocatalyst has good potential for application in the field of water pollution treatment containing high valence heavy metal ions.
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