Viologen-Unit Grafted Organic-Framework (iVOFm)

Viologen-Unit Grafted Organic-Framework (iVOFm)

Viologen-Unit Grafted Organic-Framework (iVOFm)

This article covers “Daily Current Affairs for UPSC” and the topic is ‘ ViologenNew 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.

Rapid diffusion

  • 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.


The Hindu

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Plutus IAS Current Affairs 9 Jan 2023

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