09 Jan Viologen-Unit Grafted Organic-Framework (iVOFm)
Viologen-Unit Grafted Organic-Framework (iVOFm)
This article covers “Daily Current Affairs for UPSC” and the topic is ‘ Viologen–New material removes pollutant from water’ which is in the news, it covers the “Environment” In GS-3, and the following content has relevance for UPSC.
For prelims: Facts about newly discovered pollutants removing material
For mains: GS-3, Environment and pollution, water contaminants
Why in news:
Macro/microporous ionic organic framework, developed by researchers at the Indian Institute of Science Education and Research (IISER), Pune, is a specially engineered, one-of-a-kind molecular sponge-like substance that can quickly clean polluted water by soaking up harmful chemicals.
About: Water Contamination
Numerous organic pollutants, such as organic dyes, antibiotics, pesticides, etc., as well as inorganic toxic pollutants, like iodides, and oxo-pollutants, like perrhenate, that are carcinogenic in freshwater sources and can directly endanger people and living things have been identified through systematic studies.
About the material: viologen-unit grafted organic framework (iVOFm)
- Generally speaking, generally used sorbent materials frequently trap the contaminants through an ion exchange method to filter water, however, they have low kinetics and specificity.
- To address this problem, scientists have created a novel material they call viologen-unit grafted organic framework (iVOFm).
- The substance uses a combination of ion exchange driven by electrostatics, nanopores, and particular binding sites for the contaminants being targeted.
- Water may be promptly cleaned of a variety of hazardous pollutants thanks to the size and quantity of tunable macropores and the potent electrostatic interaction with iVOFm.
- To create a sponge-like infinite framework out of a charged porous organic polymer (POP) using silica nanoparticles as a template, researchers adopted a make-and-break technique.
- The silica nanoparticles were then purposefully removed in order to uniformly establish macro/microporosity with ordered hierarchical connections throughout the material.
- To allow quick dispersion of contaminants, this material has a naturally cationic character and macroporosity.
- When tested for a variety of water pollutants, it demonstrated incredibly quick capture of all the pollutants—both organic and inorganic—removal rates of over 93% in just 30 seconds.
- Sulfadimethoxine antibiotics may be effectively removed by the developed material.
- Additionally, it can be used repeatedly to purify tainted water.
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