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Characterization of La/Fe/TiO₂ and Its Photocatalytic Performance in Ammonia Nitrogen Wastewater.
Int J Environ Res Public Health. 2015 Nov 17; 12(11):14626-39.IJ

Abstract

La/Fe/TiO₂ composite photocatalysts were synthesized by Sol-Gel method and well characterized by powder X-ray diffraction (XRD), scanning electron microscopy (SEM), nitrogen-physical adsorption, and UV-Vis diffuse reflectance spectra (UV-Vis DRS). It is interesting that the doped catalysts were in anatase phase while the pure TiO₂ was in rutile phase. In addition, the composites possessed better physical chemical properties in photocatalytic activity than pure TiO₂: stronger visible-light-response ability, larger specific surface area, and more regular shape in morphology. The photodegradation results of ammonia nitrogen indicate that: the La/Fe/TiO₂ had higher catalytic activity to ammonia nitrogen waste water compared pure TiO₂ and the other single metal-doped TiO₂. pH 10 and 2 mmol/L H₂O₂ were all beneficial to the removal of ammonia nitrogen by La/Fe/TiO₂. However, the common inorganic ions of Cl(-), NO₃(-), SO₄(2-), HCO₃(-)/CO₃²(-), Na⁺, K⁺, Ca(2+) and Mg(2+) in water all inhibited the degradation of ammonia nitrogen. By balance calculation, at least 20% of ammonia nitrogen was converted to N₂ during the 64.6% removal efficiency of ammonia nitrogen.

Authors+Show Affiliations

School of Resources and Environmental Engineering, Jiangxi University of Science and Technology, Ganzhou 341000, China. lxp9491@163.com. Western Mining Co., Ltd., Xining 81006, China. lxp9491@163.com. Jiangxi Key Laboratory of Mining & Metallurgy Environmental Pollution Control, Jiangxi University of Science and Technology, Ganzhou 341000, China. lxp9491@163.com. Faculty of Engineering, University of Alberta, Edmonton, AB T6G2V4, Canada. lxp9491@163.com.School of Resources and Environmental Engineering, Jiangxi University of Science and Technology, Ganzhou 341000, China. ccfjxnc@126.com. Jiangxi Key Laboratory of Mining & Metallurgy Environmental Pollution Control, Jiangxi University of Science and Technology, Ganzhou 341000, China. ccfjxnc@126.com.School of Resources and Environmental Engineering, Jiangxi University of Science and Technology, Ganzhou 341000, China. 18270733906@163.com. Jiangxi Key Laboratory of Mining & Metallurgy Environmental Pollution Control, Jiangxi University of Science and Technology, Ganzhou 341000, China. 18270733906@163.com.School of Resources and Environmental Engineering, Jiangxi University of Science and Technology, Ganzhou 341000, China. Wangjunyu1026@163.com. Jiangxi Key Laboratory of Mining & Metallurgy Environmental Pollution Control, Jiangxi University of Science and Technology, Ganzhou 341000, China. Wangjunyu1026@163.com.School of Resources and Environmental Engineering, Jiangxi University of Science and Technology, Ganzhou 341000, China. yanqun8219893@163.com. Jiangxi Key Laboratory of Mining & Metallurgy Environmental Pollution Control, Jiangxi University of Science and Technology, Ganzhou 341000, China. yanqun8219893@163.com.School of Resources and Environmental Engineering, Jiangxi University of Science and Technology, Ganzhou 341000, China. 13177767724@163.com.School of Resources and Environmental Engineering, Jiangxi University of Science and Technology, Ganzhou 341000, China. cywang@jxust.edu.cn. Western Mining Co., Ltd., Xining 81006, China. cywang@jxust.edu.cn. Jiangxi Key Laboratory of Mining & Metallurgy Environmental Pollution Control, Jiangxi University of Science and Technology, Ganzhou 341000, China. cywang@jxust.edu.cn.

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

26593929

Citation

Luo, Xianping, et al. "Characterization of La/Fe/TiO₂ and Its Photocatalytic Performance in Ammonia Nitrogen Wastewater." International Journal of Environmental Research and Public Health, vol. 12, no. 11, 2015, pp. 14626-39.
Luo X, Chen C, Yang J, et al. Characterization of La/Fe/TiO₂ and Its Photocatalytic Performance in Ammonia Nitrogen Wastewater. Int J Environ Res Public Health. 2015;12(11):14626-39.
Luo, X., Chen, C., Yang, J., Wang, J., Yan, Q., Shi, H., & Wang, C. (2015). Characterization of La/Fe/TiO₂ and Its Photocatalytic Performance in Ammonia Nitrogen Wastewater. International Journal of Environmental Research and Public Health, 12(11), 14626-39. https://doi.org/10.3390/ijerph121114626
Luo X, et al. Characterization of La/Fe/TiO₂ and Its Photocatalytic Performance in Ammonia Nitrogen Wastewater. Int J Environ Res Public Health. 2015 Nov 17;12(11):14626-39. PubMed PMID: 26593929.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Characterization of La/Fe/TiO₂ and Its Photocatalytic Performance in Ammonia Nitrogen Wastewater. AU - Luo,Xianping, AU - Chen,Chunfei, AU - Yang,Jing, AU - Wang,Junyu, AU - Yan,Qun, AU - Shi,Huquan, AU - Wang,Chunying, Y1 - 2015/11/17/ PY - 2015/08/03/received PY - 2015/11/06/revised PY - 2015/11/12/accepted PY - 2015/11/24/entrez PY - 2015/11/26/pubmed PY - 2016/6/21/medline KW - La/Fe/TiO2 KW - ammonia nitrogen wastewater KW - characterization KW - photocatalysis SP - 14626 EP - 39 JF - International journal of environmental research and public health JO - Int J Environ Res Public Health VL - 12 IS - 11 N2 - La/Fe/TiO₂ composite photocatalysts were synthesized by Sol-Gel method and well characterized by powder X-ray diffraction (XRD), scanning electron microscopy (SEM), nitrogen-physical adsorption, and UV-Vis diffuse reflectance spectra (UV-Vis DRS). It is interesting that the doped catalysts were in anatase phase while the pure TiO₂ was in rutile phase. In addition, the composites possessed better physical chemical properties in photocatalytic activity than pure TiO₂: stronger visible-light-response ability, larger specific surface area, and more regular shape in morphology. The photodegradation results of ammonia nitrogen indicate that: the La/Fe/TiO₂ had higher catalytic activity to ammonia nitrogen waste water compared pure TiO₂ and the other single metal-doped TiO₂. pH 10 and 2 mmol/L H₂O₂ were all beneficial to the removal of ammonia nitrogen by La/Fe/TiO₂. However, the common inorganic ions of Cl(-), NO₃(-), SO₄(2-), HCO₃(-)/CO₃²(-), Na⁺, K⁺, Ca(2+) and Mg(2+) in water all inhibited the degradation of ammonia nitrogen. By balance calculation, at least 20% of ammonia nitrogen was converted to N₂ during the 64.6% removal efficiency of ammonia nitrogen. SN - 1660-4601 UR - https://www.unboundmedicine.com/medline/citation/26593929/Characterization_of_La/Fe/TiO₂_and_Its_Photocatalytic_Performance_in_Ammonia_Nitrogen_Wastewater_ L2 - http://www.mdpi.com/resolver?pii=ijerph121114626 DB - PRIME DP - Unbound Medicine ER -