Surface-constructing of visible-light Bi2WO6/CeO2 nanophotocatalyst grafted PVDF membrane for degradation of tetracycline and humic acid
- Authors
- Krishnan, S. A. Gokula; Abinaya, S.; Arthanareeswaran, G.; Govindaraju, Saravanan; Yun, Kyusik
- Issue Date
- 5-Jan-2022
- Publisher
- ELSEVIER
- Keywords
- Sono-dispersion; Nanocomposites; In-situ polymerization; Photocatalytic membrane; Organic pollutants
- Citation
- JOURNAL OF HAZARDOUS MATERIALS, v.421
- Journal Title
- JOURNAL OF HAZARDOUS MATERIALS
- Volume
- 421
- URI
- https://scholarworks.bwise.kr/gachon/handle/2020.sw.gachon/82215
- DOI
- 10.1016/j.jhazmat.2021.126747
- ISSN
- 0304-3894
- Abstract
- The synthesis of Bi2WO6 and CeO2 photocatalytic nanomaterials exhibit a great ability to photodegrade the antibiotics and shown excellent oxidation of various organic pollutants. Heterostructure 1:1 & 2:1 Bi2WO6/CeO2 nanocomposite was successfully synthesized via the facile sono-dispersion method and exquisite photocatalytic activity. The 0.5 wt% of nanocomposites were well-grafted on PVDF membrane surface via an in-situ polymerization method using polyacrylic acid. The fourier transform infrared (FTIR) spectra demonstrated that the network formation in PVDF induced by the -COOH functional group in acrylic acid. The grafted membrane morphology and strong binding ability over the membranes were validated by scanning electron microscope with energy dispersion (SEM-EDS) and X-ray photoelectron spectroscopy (XPS), respectively. The permeate flux of 49.2 L.m(-2) h(-1) and 41.65 L.m(-2) h were observed for tetracycline and the humic acid solution respectively for 1 wt% of PVP and 0.5 wt% of photocatalytic nanomaterials in PVDF membrane. The tetracycline and humic acid photodegradation rate of 82% and 78% and total resistance of 1.43 x 10(10) m(-1) and 1.64 x 10(10) m(-1), 83.5% and 77% flux recovery ratio were observed with N5 membrane. The 2:1 Bi2WO6/CeO2 nanocomposite grafted membrane showed a high permeate flux and better photodegradation ability of organic pollutants in the wastewater.
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Collections - 바이오나노대학 > 바이오나노학과 > 1. Journal Articles
- 산업·환경대학원 > 산업환경공학과 > 1. Journal Articles
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