title: Natural cellulose fiber derived hollow-tubular-oriented polydopamine: In-situ formation of Ag nanoparticles for reduction of 4-nitrophenol.
abstract: A facile method was reported to achieve hollow-tubular-oriented polydopamine (HTO-PDA) layer using natural kapok fiber (KF) as the bio-template without any pretreatments by altering hydrophobic fiber into hydrophilic one. Subsequently, the HTO-PDA can be utilized for direct in-situ deposition of Ag nanoparticles (NPs). The structures of pristine fiber and HTO-PDA, as well as the resulting Ag NPs attached HTO-PDA (Ag@HTO-PDA) were well characterized by means of scanning electron microscopy (SEM) coupled energy dispersion spectrum (EDS), x-ray diffraction (XRD), transmission electron microscopy (TEM), thermogravimetric analysis (TGA) and Fourier transform infrared (FTIR) spectroscopy. Due to the presence of relatively uniform Ag NPs attached onto PDA layer, Ag@KF-HTO-PDA shows stable catalytic ability towards the reduction of 4-nitrophenol into its amino derivative. Further, this method was used for facile fabrication of Calotropis gigantea fiber derived, surface-functionalized material. The experimental data demonstrated also its excellent catalytic efficiency towards 4-nitrophenol reduction.
authors.affiliation: Gansu Key Laboratory for Environmental Pollution Prediction and Control, College of Earth and Environmental Sciences, Lanzhou University, Lanzhou 730000, China.
authors.forename: Enjuan
authors.initials: E
authors.lastname: Cao
authors.affiliation: Gansu Key Laboratory for Environmental Pollution Prediction and Control, College of Earth and Environmental Sciences, Lanzhou University, Lanzhou 730000, China.
authors.forename: Wenzhen
authors.initials: W
authors.lastname: Duan
authors.affiliation: Center of Eco-materials and Green Chemistry, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, China.
authors.forename: Feng
authors.initials: F
authors.lastname: Wang
authors.affiliation: Center of Eco-materials and Green Chemistry, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, China.
authors.forename: Aiqin
authors.initials: A
authors.lastname: Wang
authors.affiliation: Gansu Key Laboratory for Environmental Pollution Prediction and Control, College of Earth and Environmental Sciences, Lanzhou University, Lanzhou 730000, China; Zhongwei High-tech Institute of Lanzhou University, Zhongwei 755000, China. Electronic address: zhengya@lzu.edu.cn.
authors.forename: Yian
authors.initials: Y
authors.lastname: Zheng
mesh_terms: D002482:Cellulose / Q000737:chemistry*; D007211:Indoles / Q000737:chemistry*; D053768:Metal Nanoparticles; D009596:Nitrophenols / Q000737:chemistry*; D011108:Polymers / Q000737:chemistry*; D012834:Silver
chemical_list: D007211:Indoles; D009596:Nitrophenols; D011108:Polymers; C568283:polydopamine; D012834:Silver; D002482:Cellulose; C024836:4-nitrophenol
keywords: 4-Nitrophenol; Calotropis gigantea fiber; In-situ reduction; Kapok fiber; Polydopamine