阿拉伯胶-cl-聚丙烯酰胺纳米水凝胶的制备及表征及其对结晶紫染料的有效吸附。
Fabrication and characterization of Gum arabic-cl-poly(acrylamide) nanohydrogel for effective adsorption of crystal violet dye.
机构信息
College of Materials Science and Engineering, Shenzhen Key Laboratory of Polymer Science and Technology, Guangdong Research Center for Interfacial Engineering of Functional Materials, Nanshan District Key Lab. for Biopolymers and Safety Evaluation, Shenzhen University, Shenzhen 518060, PR China; Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, College of Optoelectronic Engineering, Shenzhen University, Shenzhen 518060, PR China; School of Chemistry, Shoolini University, Solan 173212, Himachal Pradesh, India.
College of Materials Science and Engineering, Shenzhen Key Laboratory of Polymer Science and Technology, Guangdong Research Center for Interfacial Engineering of Functional Materials, Nanshan District Key Lab. for Biopolymers and Safety Evaluation, Shenzhen University, Shenzhen 518060, PR China; Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, College of Optoelectronic Engineering, Shenzhen University, Shenzhen 518060, PR China; School of Chemistry, Shoolini University, Solan 173212, Himachal Pradesh, India.
出版信息
Carbohydr Polym. 2018 Dec 15;202:444-453. doi: 10.1016/j.carbpol.2018.09.004. Epub 2018 Sep 5.
Natural biopolymers are better adsorbents due to better functionality, surface area, bio-compatibility and ease of procurement. The gum arabic in natural biopolymer derived from Acacia Arabic species. In the present work a novel nanohydrogel of gum arabic with acrylamide has been fabricated using microwave synthesis for adsorption of noxious crystal violet dye from aqueous medium. The prepared gum arabic-cl-poly(acrylamide) nanohydrogel (GA-cl-poly(AAm)) NHG was characterized by numerous techniques including SEM, XRD, TEM and FTIR. The GA-cl-poly(AAm) NHG showed promising adsorption ability for crystal violet dye. The effect of various adsorption factors such as concentration of GA-cl-poly(AAm) NHG and crystal violet, pH, temperature and time has been studied and reported. For understanding the adsorption mechanism three models Langmuir, Freundlich and Temkin were applied to adsorption data The kinetics and thermodynamics of adsorption were also investigated The adsorption capacity of crystal violet onto GA-cl-poly(AAm) NHG according to Langmuir model is found to be 90.90 mg/g.
天然生物聚合物由于其更好的功能性、更大的比表面积、更好的生物相容性和更容易获得，因此是更好的吸附剂。天然生物聚合物中的阿拉伯胶来源于金合欢树属植物。在本工作中，使用微波合成法制备了一种新型的阿拉伯胶-丙烯酰胺纳米水凝胶，用于从水溶液中吸附有害的结晶紫染料。所制备的阿拉伯胶-聚（丙烯酰胺）纳米水凝胶（GA-cl-poly（AAm）NHG）通过多种技术进行了表征，包括 SEM、XRD、TEM 和 FTIR。GA-cl-poly（AAm）NHG 对结晶紫染料表现出良好的吸附能力。研究并报道了各种吸附因素，如 GA-cl-poly（AAm）NHG 和结晶紫的浓度、pH 值、温度和时间对吸附的影响。为了理解吸附机制，应用了三种模型（朗缪尔、弗伦德利希和滕金）对吸附数据进行了拟合。还研究了吸附的动力学和热力学。根据朗缪尔模型，结晶紫在 GA-cl-poly（AAm）NHG 上的吸附容量为 90.90mg/g。
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