title: Characterization of La/Fe/TiO₂ and Its Photocatalytic Performance in Ammonia Nitrogen Wastewater.
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.affiliation: 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.
authors.forename: Xianping
authors.initials: X
authors.lastname: Luo
authors.affiliation: 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.
authors.forename: Chunfei
authors.initials: C
authors.lastname: Chen
authors.affiliation: 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.
authors.forename: Jing
authors.initials: J
authors.lastname: Yang
authors.affiliation: 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.
authors.forename: Junyu
authors.initials: J
authors.lastname: Wang
authors.affiliation: 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.
authors.forename: Qun
authors.initials: Q
authors.lastname: Yan
authors.affiliation: School of Resources and Environmental Engineering, Jiangxi University of Science and Technology, Ganzhou 341000, China. 13177767724@163.com.
authors.forename: Huquan
authors.initials: H
authors.lastname: Shi
authors.affiliation: 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.
authors.forename: Chunying
authors.initials: C
authors.lastname: Wang
mesh_terms: D000641:Ammonia / Q000737:chemistry*; D002384:Catalysis; D002681:China; D052918:Environmental Restoration and Remediation; D007501:Iron / Q000737:chemistry*; D008027:Light; D009584:Nitrogen / Q000737:chemistry*; D010782:Photolysis; D014025:Titanium / Q000737:chemistry*; D062065:Wastewater / Q000737:chemistry*; D014874:Water Pollutants, Chemical / Q000737:chemistry*; D014961:X-Ray Diffraction
chemical_list: D000641:Ammonia; D007501:Iron; D009584:Nitrogen; D014025:Titanium; D062065:Wastewater; D014874:Water Pollutants, Chemical; C009495:titanium dioxide
keywords: La/Fe/TiO2; ammonia nitrogen wastewater; characterization; photocatalysis