Mittal H, Kumar Vaneet, Ray Suprakas Sinha
Department of Applied Chemistry, University of Johannesburg, Doornfontein 2028, Johannesburg, South Africa; DST-CSIR National Centre for Nanostructured Materials, Council for Scientific and Industrial Research, Pretoria 0001, South Africa.
Department of Applied Sciences, CT Group of Institutions, Jalandhar, Punjab, India.
Int J Biol Macromol. 2016 Aug;89:1-11. doi: 10.1016/j.ijbiomac.2016.04.050. Epub 2016 Apr 19.
This research paper reports the utilization of gum xanthan-grafted-polyacrylic acid and Fe3O4 magnetic nanoparticles based nanocomposite hydrogel (NCH) for the highly effective adsorption of methyl violet (MV) from aqueous solution. Synthesized NCH was characterized using various techniques, such as FTIR, XRD, SEM-EDS, TEM and BET. Adsorption behavior of NCH was studied for the adsorption of MV and it was found to remove 99% dye from the solution. Adsorption process followed Langmuir isotherm model (qe=642mg/g) and pseudo-second-order kinetics model. Thermodynamic studies suggested that the adsorption process was endothermic and spontaneous. Moreover, the adsorbent was successfully utilized for successive five cycles of adsorption-desorption.
本研究论文报道了基于黄原胶接枝聚丙烯酸和Fe3O4磁性纳米颗粒的纳米复合水凝胶（NCH）用于从水溶液中高效吸附甲基紫（MV）的情况。使用傅里叶变换红外光谱（FTIR）、X射线衍射（XRD）、扫描电子显微镜-能谱仪（SEM-EDS）、透射电子显微镜（TEM）和比表面积分析仪（BET）等各种技术对合成的NCH进行了表征。研究了NCH对MV的吸附行为，发现其能从溶液中去除99%的染料。吸附过程遵循朗缪尔等温线模型（qe = 642mg/g）和伪二级动力学模型。热力学研究表明吸附过程是吸热且自发的。此外，该吸附剂成功用于连续五个吸附-解吸循环。
