E2.05 Lin 2016 ReNUWIt Annual Meeting Poster

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Abstract/Contents

Abstract: A series of TiO2-graphene oxide (GO) coated side-glowing optical fibers (SOFs) were synthesized by polymer assisted hydrothermal deposition method. The as-synthesized nanocomposites were characterized by crystallographic and spectroscopic characterization methods. The photocatalytic performance of the synthesized nanocomposites were characterized for the degradation of three pharmaceuticals under UV and visible light, including carbamazepine, ibuprofen, and sulfamethoxazole. The photocatalytic activities of prepared TiO2-GO nanocomposite were significantly improved compared to pure TiO2, and were also strongly affected by the concentration of GO in the catalysts. The highest catalytic activity was observed with 18% GO, resulting in the degradation of 54% for carbamazepine, 81% for ibuprofen, and 92% for sulfamethoxazole after 180 min UV irradiation, but their mineralization rates were similar between 52% and 59%. The coupled adsorption and photocatalytic oxidation of pharmaceuticals by the prepared nanocomposite followed the Langmuir-Hinshelwood kinetic model. Interestingly, there was an obviously positive correlation between degradation rate constant and quantum flux for both UV and visible light. In addition, long-term photoactivity testing of TiO2-GO coated SOFs demonstrated the durability of synthesized materials for water treatment.

Type of resource	other
Date created	May 2016

Subject	Re-inventing the Nation’s Urban Water Infrastructure
Subject	ReNUWIt
Subject	E2.05
Subject	Efficient Engineered Systems
Subject	Energy and resource recovery
Subject	New Mexico
Subject	adsorption
Subject	aquatic environment
Subject	azo dyes
Subject	contaminants
Subject	degradation
Subject	drinking water
Subject	enhanced photocatalysis
Subject	heterogeneous photocatalysis
Subject	humic acid
Subject	mechanisms
Subject	methyl orange
Subject	methylene blue
Subject	municipal wastewater
Subject	nanocomposites
Subject	organic degradation
Subject	oxidation
Subject	personal care products
Subject	pharmaceuticals
Subject	photocatalysis
Subject	photocatalytic oxidation
Subject	reactor
Subject	reclamation
Subject	removal
Subject	side glowing optical fibers
Subject	tio2 graphene oxide
Subject	tio2 photocatalysis
Subject	uv
Subject	water
Subject	water treatment

Related Publication	Lin, L., Wang, H. Y., Jiang, W. B., Mkaouar, A. R., & Xu, P. (2017). Comparison study on photocatalytic oxidation of pharmaceuticals by TiO2-Fe and TiO2-reduced graphene oxide nanocomposites immobilized on optical fibers. Journal of Hazardous Materials, 333, 162-168. http://doi.org/10.1016/j.jhazmat.2017.02.044
Related Publication	Lin, L., Wang, H. Y., Luo, H. M., & Xu, P. (2015). Enhanced photocatalysis using side-glowing optical fibers coated with Fe-doped TiO2 nanocomposite thin films. Journal of Photochemistry and Photobiology a-Chemistry, 307, 88-98. http://doi.org/10.1016/j.jphotochem.2015.04.010
Related Publication	Lin, L., Wang, H. Y., Luo, H. M., & Xu, P. (2016). Photocatalytic Treatment of Desalination Concentrate Using Optical Fibers Coated With Nanostructured Thin Films: Impact of Water Chemistry and Seasonal Climate Variations. Photochemistry and Photobiology, 92(3), 379-387. http://doi.org/10.1111/php.12589
Related Publication	Lin, L., Wang, H. Y., & Xu, P. (2017). Immobilized TiO2-reduced graphene oxide nanocomposites on optical fibers as high performance photocatalysts for degradation of pharmaceuticals. Chemical Engineering Journal, 310, 389-398. http://doi.org/10.1016/j.cej.2016.04.024
Location	https://purl.stanford.edu/yc738zx5642

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Preferred Citation: Lin, Lu and Wang, Huiyao and Xu, Pei. (2016). E2.05 Lin 2016 ReNUWIt Annual Meeting Poster. Stanford Digital Repository. Available at: https://purl.stanford.edu/yc738zx5642

Re-inventing the Nation's Urban Water Infrastructure (ReNUWIt)

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