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Magnetically recyclable Ag/TiO2 co-decorated magnetic silica composite for photodegradation of dibutyl phthalate with fluorescent lamps.
Water Sci Technol. 2020 Feb; 81(4):790-800.WS

Abstract

In recent years, industrial contaminants and especially organic pollutions have been threatening both environmental safety and human health. Particularly, dibutyl phthalate (DBP) has been considered as one of the major hazardous contaminants due to its widespread production and ecological toxicities. Consequently, reliable methods toward the efficient and environmentally benign degradation of DBP in wastewater would be very desirable. To this end, a novel magnetically separable porous TiO2/Ag composite photocatalyst with magnetic Fe3O4 particles as the core was developed and successfully introduced to the photocatalytic degradation of DBP under visible irradiation with a fluorescent lamp. The presented work describes the grafting of Ag co-doped TiO2 composite on the silica-modified porous Fe3O4 magnetic particles with a simple and inexpensive chemical co-precipitation method. Through the investigation of the influencing factors including photocatalyst dosage, initial concentration of DBP, solution pH, and H2O2 content, we found that the degradation efficiency could reach 74%. The photodegradation recovery experiment showed that the degradation efficiency of this photocatalyst remained almost the same after five times of reuse. In addition, a plausible degradation process was also proposed involving the attack of active hydroxyl radicals generated from this photocatalysis system and production of the corresponding intermediates of butyl phthalate, diethyl phthalate, dipropyl phthalate, methyl benzoate, and benzoic acid.

Authors+Show Affiliations

Center for Molecular Science and Engineering, College of Science, Northeastern University, Shenyang 110819, China E-mail: chenzhangpei@mail.neu.edu.cn.Center for Molecular Science and Engineering, College of Science, Northeastern University, Shenyang 110819, China E-mail: chenzhangpei@mail.neu.edu.cn.Center for Molecular Science and Engineering, College of Science, Northeastern University, Shenyang 110819, China E-mail: chenzhangpei@mail.neu.edu.cn.Fujian Provincial Key Laboratory of Featured Materials in Biochemical Industry, Fujian Province University Key Laboratory of Green Energy and Environment Catalysis, College of Chemistry and Materials, Ningde Normal University, Ningde, Fujian 352100, China.Center for Molecular Science and Engineering, College of Science, Northeastern University, Shenyang 110819, China E-mail: chenzhangpei@mail.neu.edu.cn.Center for Molecular Science and Engineering, College of Science, Northeastern University, Shenyang 110819, China E-mail: chenzhangpei@mail.neu.edu.cn.

Pub Type(s)

Journal Article

Language

eng

PubMed ID

32460282

Citation

Ding, Zhiqiang, et al. "Magnetically Recyclable Ag/TiO2 Co-decorated Magnetic Silica Composite for Photodegradation of Dibutyl Phthalate With Fluorescent Lamps." Water Science and Technology : a Journal of the International Association On Water Pollution Research, vol. 81, no. 4, 2020, pp. 790-800.
Ding Z, Liu Y, Fu Y, et al. Magnetically recyclable Ag/TiO2 co-decorated magnetic silica composite for photodegradation of dibutyl phthalate with fluorescent lamps. Water Sci Technol. 2020;81(4):790-800.
Ding, Z., Liu, Y., Fu, Y., Chen, F., Chen, Z., & Hu, J. (2020). Magnetically recyclable Ag/TiO2 co-decorated magnetic silica composite for photodegradation of dibutyl phthalate with fluorescent lamps. Water Science and Technology : a Journal of the International Association On Water Pollution Research, 81(4), 790-800. https://doi.org/10.2166/wst.2020.162
Ding Z, et al. Magnetically Recyclable Ag/TiO2 Co-decorated Magnetic Silica Composite for Photodegradation of Dibutyl Phthalate With Fluorescent Lamps. Water Sci Technol. 2020;81(4):790-800. PubMed PMID: 32460282.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Magnetically recyclable Ag/TiO2 co-decorated magnetic silica composite for photodegradation of dibutyl phthalate with fluorescent lamps. AU - Ding,Zhiqiang, AU - Liu,Yue, AU - Fu,Yong, AU - Chen,Feng, AU - Chen,Zhangpei, AU - Hu,Jianshe, PY - 2020/5/28/entrez PY - 2020/5/28/pubmed PY - 2020/5/30/medline SP - 790 EP - 800 JF - Water science and technology : a journal of the International Association on Water Pollution Research JO - Water Sci. Technol. VL - 81 IS - 4 N2 - In recent years, industrial contaminants and especially organic pollutions have been threatening both environmental safety and human health. Particularly, dibutyl phthalate (DBP) has been considered as one of the major hazardous contaminants due to its widespread production and ecological toxicities. Consequently, reliable methods toward the efficient and environmentally benign degradation of DBP in wastewater would be very desirable. To this end, a novel magnetically separable porous TiO2/Ag composite photocatalyst with magnetic Fe3O4 particles as the core was developed and successfully introduced to the photocatalytic degradation of DBP under visible irradiation with a fluorescent lamp. The presented work describes the grafting of Ag co-doped TiO2 composite on the silica-modified porous Fe3O4 magnetic particles with a simple and inexpensive chemical co-precipitation method. Through the investigation of the influencing factors including photocatalyst dosage, initial concentration of DBP, solution pH, and H2O2 content, we found that the degradation efficiency could reach 74%. The photodegradation recovery experiment showed that the degradation efficiency of this photocatalyst remained almost the same after five times of reuse. In addition, a plausible degradation process was also proposed involving the attack of active hydroxyl radicals generated from this photocatalysis system and production of the corresponding intermediates of butyl phthalate, diethyl phthalate, dipropyl phthalate, methyl benzoate, and benzoic acid. SN - 0273-1223 UR - https://www.unboundmedicine.com/medline/citation/32460282/Magnetically_recyclable_Ag/TiO2_co-decorated_magnetic_silica_composite_for_photodegradation_of_dibutyl_phthalate_with_fluorescent_lamps L2 - https://iwaponline.com/wst/article-lookup/doi/10.2166/wst.2020.162 DB - PRIME DP - Unbound Medicine ER -