Mishra Soumya Ranjan, Roy Prerona, Gadore Vishal, Ahmaruzzaman Md
Department of Chemistry, National Institute of Technology, Silchar, India.
Sci Rep. 2023 Oct 23;13(1):18051. doi: 10.1038/s41598-023-45506-4.
A novel Chitosan/Indium sulfide (CS/InS) nanocomposite was created by co-precipitating Chitosan and InCl in solution, resulting in InS agglomeration on the Chitosan matrix with a remarkable pore diameter of 170.384 Å, and characterized it for the physical and chemical properties. Under optimal conditions (pH = 7, time = 60 min, catalyst dosage = 0.24 g L, and dye concentration = 100 mg L), the synthesized nanocomposite demonstrated remarkable adsorption capabilities for Victoria Blue (VB), attaining a removal efficiency of 90.81%. The Sips adsorption isotherm best matched the adsorption process, which followed pseudo-second-order kinetics. With a rate constant of 6.357 × 10 g mg min, the highest adsorption capacity (q) was found to be 683.34 mg g. Statistical physics modeling (SPM) of the adsorption process revealed multi-interaction and multi-molecular adsorption of VB on the CS/InS surface. The nanocomposite demonstrated improved stability and recyclability, indicating the possibility for low-cost, reusable wastewater dye removal adsorbents. These results have the potential to have practical applications in environmental remediation.
通过在溶液中共沉淀壳聚糖和氯化铟制备了一种新型壳聚糖/硫化铟（CS/InS）纳米复合材料，使得硫化铟在壳聚糖基质上团聚，孔径达到170.384 Å，并对其物理和化学性质进行了表征。在最佳条件（pH = 7、时间 = 60分钟、催化剂用量 = 0.24 g/L和染料浓度 = 100 mg/L）下，合成的纳米复合材料对维多利亚蓝（VB）表现出显著的吸附能力，去除效率达到90.81%。Sips吸附等温线与吸附过程最匹配，吸附过程遵循准二级动力学。速率常数为6.357×10 g mg min，最高吸附容量（q）为683.34 mg/g。吸附过程的统计物理模型（SPM）表明，VB在CS/InS表面存在多相互作用和多分子吸附。该纳米复合材料表现出更高的稳定性和可回收性，表明具有低成本、可重复使用的废水染料去除吸附剂的可能性。这些结果有可能在环境修复中得到实际应用。
