Synthesis of Magnetic Nanoparticles Using Potato Extract for Dye Degradation: A Green Chemistry Experiment

Abstract

Systems thinking is highly desirable for re-imagining chemistry education, which will help in the development of an integrated and sustainable approach that takes into account the interdependence of a system under study with other components of the ecosystem rather than practicing a fragmented approach. Thus, to develop a systems' perspective into the minds of early researchers, we propose a safe, convenient, and reliable two sessions laboratory experiment in which students synthesize magnetic nanoparticles (MNPs) using plant-derived potato extract as a green reaction medium and as both reducing and stabilizing agent. The synthesized MNPs are effectively utilized in the degradation of rhodamine B dye under ultrasonic radiation and using H 2 O 2 as an oxidant. Further, the recyclability of MNPs was tested in successive runs. The described experiment has also been performed by numerous undergraduate students and is well appreciated by them. The former synthetic experiment gives students an introduction and hands on experience to nanotechnology through nanoparticle synthesis. While the later describes practical applications of nanotechnology in wastewater treatment, thereby reinforcing basic chemical principles and instrumentation techniques (such as FT-IR and UV−vis spectrophotometry) through environmental remediation. To foster students' higher order thinking skills, a systems thinking hierarchical model has also been proposed. It is believed that this context-based learning approach opens a door for re-imagining chemistry education and will help educate students and society in a more effective manner.

Sustainable Hydrothermal and Solvothermal Synthesis of Advanced Carbon Materials in Multidimensional Applications: A Review

“…In many systems, MW heating is seen as a more effective way to manage heating because it is less energy-intensive than traditional methods [70]. The 'Green Chemistry Monograph of the American Chemical Society' proposed the use of catalysts or MW irradiation to decrease the energy requirements for the synthesis process [71]. The low-cost processes and versatility of MWAS have also found application in the fabrication of membrane nanotechnology for a wide range of applications.…”

Sustainable Hydrothermal and Solvothermal Synthetic Approaches for Advanced Carbon Materials in Multidimensional Applications: A Review

“…In many systems, MW heating is seen as a more effective way to manage heating because it is less energy-intensive than traditional methods [60]. The 'Green Chemistry Monograph of the American Chemical Society' proposed the use of catalysts or MW irradiation to decrease the energy requirements for the synthesis process [61].…”

Nanoporous Silicon as a Green, High-Tech Educational Tool

“…Such “nanoprojects” for students strive to illustrate key concepts of nanoscience, often in a visually appealing manner, utilizing inexpensive and readily available equipment. Key, evident trends are continuously minimizing health and safety risks for relatively inexperienced students and the increased use of “green” chemistry [ 15 , 16 , 17 , 18 ].…”