Ultrasound assisted preparation, characterization and adsorption study of ternary chitosan-ZnO-TiO2 nanocomposite: Advantage over conventional method 机翻标题: 暂无翻译,请尝试点击翻译按钮。

来源
Ultrasonics sonochemistry
年/卷/期
2019 / 52 /
页码
120-130
ISSN号
1350-4177
作者单位
Rashtrasant Tukadoji Maharaj Nagpur Univ, Laxminarayan Inst Technol, Dept Chem Engn, Nagpur 440033, MS, India;Rashtrasant Tukadoji Maharaj Nagpur Univ, Laxminarayan Inst Technol, Dept Chem Engn, Nagpur 440033, MS, India;Sinhgad Coll Engn, Dept Chem Engn, Pune 411041, MS, India;Natl Inst Technol, Dept Chem Engn, Warangal 506004, Telangana, India;
作者
Bhanvase, B. A.;Veer, A.;Shirsath, S. R.;Sonawane, S. H.;
摘要
In the present work, the synthesis of ternary chitosan/zinc oxide/titanium dioxide (CTS-ZnO-TiO2) nano composite was carried out with the use of mechanical stirring (conventional) and ultrasound assisted method. The characterization of prepared CTS-ZnO-TiO2 adsorbent was carried out using XRD, TEM, FTIR and the results of these analysis methods proved the successful preparation of ternary nanocomposite. Crystal violet (CV) dye was used as a pollutant to observe the adsorption ability of the prepared nanocomposite and the nanocomposite prepared by ultrasonic-assisted method proved to be a better adsorbent. The CV dye adsorption was significant for CTS-ZnO-TiO2 nanocomposite synthesized with the use of ultrasound assisted method compared to that prepared by conventional method. It is due to the physical effects of the ultrasonic irradiations due to which formation of finely dispersed nanocomposite takes place than that by conventional method. For batch adsorption the effect of various operating parameters such as initial dye concentration, time, temperature and adsorbent dose has been evaluated. The obtained data were processed using isotherm models, adsorption kinetics and the thermodynamic behavior of the cationic dye adsorption was also studied. The isotherm data was correlated reasonably well by the Temkin adsorption isotherm. Pseudo-second-order kinetic model provided a better correlation for the experimental data compared to pseudo first order, Elovich model and power function kinetics model. Thermodynamic parameters for adsorption indicated that the dye adsorption was spontaneous and endothermic in nature.
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关键词/主题词
CTS-ZnO-TiO2 ternary nanocomposite;Ultrasound;TEM;Isotherms;Kinetic models;
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