title: Flower-, wire-, and sheet-like MnO2-deposited diatomites: Highly efficient absorbents for the removal of Cr(VI).
abstract: Flower-, wire-, and sheet-like MnO2-deposited diatomites have been prepared using a hydrothermal method with Mn(Ac)2, KMnO4 and/or MnSO4 as Mn source and diatomite as support. Physical properties of the materials were characterized by means of numerous analytical techniques, and their behaviors in the adsorption of chromium(VI) were evaluated. It is shown that the MnO2-deposited diatomite samples with different morphologies possessed high surface areas and abundant surface hydroxyl groups (especially the wire-like MnO2/diatomite sample). The wire-like MnO2/diatomite sample showed the best performance in the removal of Cr(VI), giving the maximum Cr(VI) adsorption capacity of 101 mg/g.
authors.affiliation: Key Lab of Advanced Functional Materials, Ministry of Education, College of Materials Science and Engineering, Beijing University of Technology, Beijing 100124, China. Electronic address: ychengdu@bjut.edu.cn.
authors.forename: Yucheng
authors.initials: Y
authors.lastname: Du
authors.affiliation: Key Lab of Advanced Functional Materials, Ministry of Education, College of Materials Science and Engineering, Beijing University of Technology, Beijing 100124, China.
authors.forename: Liping
authors.initials: L
authors.lastname: Wang
authors.affiliation: Key Lab of Advanced Functional Materials, Ministry of Education, College of Materials Science and Engineering, Beijing University of Technology, Beijing 100124, China. Electronic address: wangjsh@bjut.edu.cn.
authors.forename: Jinshu
authors.initials: J
authors.lastname: Wang
authors.affiliation: Key Lab of Advanced Functional Materials, Ministry of Education, College of Materials Science and Engineering, Beijing University of Technology, Beijing 100124, China.
authors.forename: Guangwei
authors.initials: G
authors.lastname: Zheng
authors.affiliation: Key Lab of Advanced Functional Materials, Ministry of Education, College of Materials Science and Engineering, Beijing University of Technology, Beijing 100124, China.
authors.forename: Junshu
authors.initials: J
authors.lastname: Wu
authors.affiliation: Laboratory of Catalysis Chemistry and Nanoscience, Department of Chemistry and Chemical Engineering, College of Environmental and Energy Engineering, Beijing University of Technology, Beijing 100124, China. Electronic address: hxdai@bjut.edu.cn.
authors.forename: Hongxing
authors.initials: H
authors.lastname: Dai
mesh_terms: D000327:Adsorption; D002857:Chromium / Q000737:chemistry*; D007692:Diatomaceous Earth / Q000737:chemistry*; D017895:Manganese Compounds / Q000737:chemistry*; D008855:Microscopy, Electron, Scanning; D046529:Microscopy, Electron, Transmission; D010087:Oxides / Q000737:chemistry*; D014874:Water Pollutants, Chemical / Q000737:chemistry*
chemical_list: D017895:Manganese Compounds; D010087:Oxides; D014874:Water Pollutants, Chemical; D002857:Chromium; D007692:Diatomaceous Earth; C033787:diatomite; C016552:manganese dioxide
keywords: Adsorption efficiency; Cr(VI) removal; MnO(2)-deposited diatomite; Morphological effect