title: FeOOH-loaded MnO2nano-composite: An efficient emergency material for thallium pollution incident.
abstract: A FeOOH-loaded MnO2nano-composite was developed as an emergency material for Tl(I) pollution incident. Structural characterizations showed that FeOOH successfully loaded onto MnO2, the nanosheet-flower structure and high surface area (191 m2g-1) of material contributed to the excellent performance for Tl(I) removal. FeOOH-loaded MnO2with a Fe/Mn molar ratio of 1:2 exhibited a noticeable enhanced capacity for Tl(I) removal compared to that of pure MnO2. The outstanding performance for Tl(I) removal involves in extremely high efficiency (achieved equilibrium and drinking water standard within 4 min) and the large maximum adsorption capacity (450 mg g-1). Both the control-experiment and XPS characterization proved that the removal mechanism of Tl(I) on FeOOH-loaded MnO2included adsorption and oxidation: the oxidation of MnO2played an important role for Tl(I) removal, and the adsorption of FeOOH loaded on MnO2enhanced Tl(I) purification at the same time. In-depth purification of Tl(I) had reach drinking water standards (0.1 μg L-1) at pH above 7, and there wasn't security risk produced from the dissolution of Mn2+and Fe2+. Moreover, the as-prepared material could be utilized as a recyclable adsorbent regenerated by using NaOH-NaClO binary solution. Therefore, the synthesized FeOOH-loaded MnO2in this study has the potential to be applied as an emergency material for thallium pollution incident.
authors.affiliation: College of Environment and Energy, South China University of Technology, Guangzhou 510006, PR China; The Key Lab of Pollution Control and Ecosystem Restoration in Industry Clusters, Ministry of Education, Guangzhou 510006, PR China.
authors.forename: Meiqing
authors.initials: M
authors.lastname: Chen
authors.affiliation: College of Environment and Energy, South China University of Technology, Guangzhou 510006, PR China; The Key Lab of Pollution Control and Ecosystem Restoration in Industry Clusters, Ministry of Education, Guangzhou 510006, PR China; Guangdong Provincial Engineering and Technology Research Center for Environmental Risk Prevention and Emergency Disposal, South China University of Technology, Guangzhou Higher Education Mega Centre, Guangzhou 510006, PR China; Guangdong Environmental Protection Key Laboratory of Solid Waste Treatment and Recycling, Guangzhou 510006, PR China. Electronic address: pppxwu@scut.edu.cn.
authors.forename: Pingxiao
authors.initials: P
authors.lastname: Wu
authors.affiliation: College of Environment and Energy, South China University of Technology, Guangzhou 510006, PR China; The Key Lab of Pollution Control and Ecosystem Restoration in Industry Clusters, Ministry of Education, Guangzhou 510006, PR China.
authors.forename: Langfeng
authors.initials: L
authors.lastname: Yu
authors.affiliation: College of Environment and Energy, South China University of Technology, Guangzhou 510006, PR China; The Key Lab of Pollution Control and Ecosystem Restoration in Industry Clusters, Ministry of Education, Guangzhou 510006, PR China.
authors.forename: Shuai
authors.initials: S
authors.lastname: Liu
authors.affiliation: College of Environment and Energy, South China University of Technology, Guangzhou 510006, PR China; The Key Lab of Pollution Control and Ecosystem Restoration in Industry Clusters, Ministry of Education, Guangzhou 510006, PR China.
authors.forename: Bo
authors.initials: B
authors.lastname: Ruan
authors.affiliation: College of Environment and Energy, South China University of Technology, Guangzhou 510006, PR China.
authors.forename: Haihui
authors.initials: H
authors.lastname: Hu
authors.affiliation: College of Environment and Energy, South China University of Technology, Guangzhou 510006, PR China.
authors.forename: Nengwu
authors.initials: N
authors.lastname: Zhu
authors.affiliation: College of Environment and Energy, South China University of Technology, Guangzhou 510006, PR China.
authors.forename: Zhang
authors.initials: Z
authors.lastname: Lin
mesh_terms: D000327:Adsorption; D010084:Oxidation-Reduction; D013793:Thallium; D014874:Water Pollutants, Chemical / Q000737:chemistry; D018508:Water Purification
chemical_list: D014874:Water Pollutants, Chemical; D013793:Thallium
keywords: Emergency material; FeOOH-loaded MnO(2); Thallium pollution incident; Thallium(I)