Preparation and Dye Adsorption of Low-cost Polyaniline-tea Saponin Nanocomposites

来源 :武汉理工大学学报(材料科学版)(英文版) | 被引量 : 0次 | 上传用户:afengyu66
下载到本地 , 更方便阅读
声明 : 本文档内容版权归属内容提供方 , 如果您对本文有版权争议 , 可与客服联系进行内容授权或下架
论文部分内容阅读
Four polyaniline-tea saponin (PTS) nanocomposites were prepared by an in-situ polymerization with tea saponin (TS) as a biosurfactant, and they were used to remove organic dyes from aqueous solution. The PTS nanocomposites were characterized by using field emission scanning electron microscopy, the Fourier transform infrared spectroscopy, the Ultraviolet-visible spectroscopy, and the thermogravimetric analysis. The adsorption performances of the PTS nanocomposites for organic dyes were studied by a static adsorption method. The experimental results reveal that adsorption capacities of the PTS nanocomposites are higher than that of pure polyaniline. Especially, the PTS nanocomposites exhibit excellent adsorption performances for anionic dyes because of the electrostatic interaction between the positively charged nitrogen atoms on the PTS chains and the negatively charged sulfonate ions in the anionic dyes. According to the adsorption kinetics and thermodynamics results, the adsorption processes of PTS20 for CR and AB74 follow well with the pseudo second-order and Langmuir isotherm models. It is indicated that TS should be very useful in the preparation of PTS nanocomposite and in removal of toxic dyes from waste water.
其他文献
Full-Heusler alloy Fe2TiSn was predicted to be a potential thermoelectric material with high mechanical properties and stability. Fe2TiSn was usually prepared by arc-melting followed by annealing for 2 weeks, which takes a long time and consumes a large a
The electron paramagnetic spectra of trigonal Mn2+ centers in [Co(H2O)6]SiF6, [Co(H2O)6] SnF6, and [Co(H2O)6]PtCl6 crystals were studied on the basis of the complete energy matrices for a d5 configuration ion in a trigonal ligand field. When Mn2+ is doped
The effects of initial oxygen concentration on the reverse leakage current of PIN rectifier diodes were studied. We fabricated the PIN rectifier diodes with different initial oxygen concentrations, and analyzed the electrical properties, anisotropic prefe
Because of its merits, acrylic resin was chosen to improve the mechanical, conductive and hydrophobic properties. Carbon fiber powders (CF), carbon nanotubes (MWCNT), and nano-TiO2 were incorporated into the acrylic resin to prepare the corona-proof condu
ZrO2-5CrMnMo composite samples were prepared by hot press sintering. When NiCoCrAlY powders were used as the bonding layer and the different mixtures of NiCoCrAlY alloy and 3YSZ (3mol% yttria stabilized zirconia) ceramic powders were used as the transitio
Three-dimensional finite element physical models considering the layered distribution of materials at the interface were developed to study the effect of the coating system on distributions of thermal residual stresses in SiCf/Ti2AlNb composites. Two coat
The Ge metal-oxide-semiconductor (MOS) capacitors were fabricated with HfO2 as gate dielectric. AlON, NdON, and NdAlON were deposited between the gate dielectric and the Ge substrate as the interfacial passivation layer (IPL). The electrical properties (s
We investigated the impure phase problem and summarized its two formation mechanisms of YAG powders synthesized via the co-precipitation method. The ions loss problem caused by high concentration reaction solution in the titration process was emphatically
The microstructure and thermal characteristics of Mg-36%Ga, Mg-43%Ga, and Mg45%Ga(wt%) alloys were investigated. The experimental results show that the microstructure of Mg-36%Ga alloy is mainly composed of primary α-Mg phase and α-Mg+Mg5Ga2 eutectic phas
Epoxy resin (EPR) was used to crosslink with Camellia oleifera Abel. protein to prepare wood adhesive, and the bonding performance and curing characteristics of which were mainly investigated, and the synthesis mechanism was also discussed by using model