title: In situ synthesis of MnO2 coated cellulose nanofibers hybrid for effective removal of methylene blue.
abstract: A one-step and energy-efficient synthetic method was developed to fabricate manganese dioxide (MnO2)/cellulose nanofibers (CNFs) hybrid. In this process, bamboo CNFs acted as both a reducing reagent for the Mn (VII) and an ultralight support for the generated MnO2 nanosheets. Neither additional reducing reagents nor heating were adopted during the synthesis process. The phase constitutions, crystal structure and morphology of the hybrid were systematically investigated. Both oxidative and adsorptive decolorization of methylene blue (MB) were investigated to evaluate its efficiency on dye wastewater treatment. The results showed that the few-layer MnO2 nanosheets deposited on CNFs exhibited high decolorization efficiency for the oxidation and adsorption of MB. When slurry containing 25 mg MnO2/CNFs hybrid was dispersed in 25 mL 80 mg L(-1) MB solution, the removal of MB was more than 99.8% within 2 min.
authors.affiliation: State Key Laboratory of Polymer Materials Engineering, Polymer Research Institute at Sichuan University, Chengdu 610065, China.
authors.forename: Yaru
authors.initials: Y
authors.lastname: Wang
authors.affiliation: State Key Laboratory of Polymer Materials Engineering, Polymer Research Institute at Sichuan University, Chengdu 610065, China.
authors.forename: Xiaofang
authors.initials: X
authors.lastname: Zhang
authors.affiliation: State Key Laboratory of Polymer Materials Engineering, Polymer Research Institute at Sichuan University, Chengdu 610065, China.
authors.forename: Xu
authors.initials: X
authors.lastname: He
authors.affiliation: State Key Laboratory of Polymer Materials Engineering, Polymer Research Institute at Sichuan University, Chengdu 610065, China. Electronic address: weizhang@scu.edu.cn.
authors.forename: Wei
authors.initials: W
authors.lastname: Zhang
authors.affiliation: State Key Laboratory of Polymer Materials Engineering, Polymer Research Institute at Sichuan University, Chengdu 610065, China.
authors.forename: Xinxing
authors.initials: X
authors.lastname: Zhang
authors.affiliation: State Key Laboratory of Polymer Materials Engineering, Polymer Research Institute at Sichuan University, Chengdu 610065, China. Electronic address: canhuilu@263.net.
authors.forename: Canhui
authors.initials: C
authors.lastname: Lu
keywords: Cellulose nanofibers; Decolorization of methylene blue; Manganese dioxide; Nanocomposites