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Related Concept Videos

Microbes and Other Elemental Cycles01:24

Microbes and Other Elemental Cycles

Microbial activity plays a pivotal role in the biogeochemical cycling of iron and manganese, especially at the redox gradients characteristic of stratified aquatic environments. These cycles are driven by microbial transformations between oxidized and reduced forms of the metals, allowing organisms to exploit them for metabolic energy and structural purposes.Iron Cycling Across Redox GradientsIn neutral, oxygen-rich surface waters, iron is predominantly found in its oxidized, insoluble ferric...
Microbial Corrosion01:24

Microbial Corrosion

Microbiologically Influenced Corrosion (MIC) is a significant form of material degradation caused by the metabolic activities of microorganisms. This phenomenon poses substantial challenges across various industries, including oil and gas, maritime, and water treatment sectors.MIC occurs when microorganisms, such as bacteria, archaea, and fungi, colonize metal surfaces, forming biofilms that alter the local electrochemical environment. These biofilms can lead to the production of corrosive...

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Nitridated Iron-Based (Nano)Materials for Environmental Remediation: Synthesis, Characterization, and Performance.

Li Gong1, Jingting Chen1, Feng He1,2

  • 1Zhejiang Key Laboratory of Low-carbon Control Technology for Industrial Pollution, College of Environment, Zhejiang University of Technology, Hangzhou 310014, China.

Environmental Science & Technology
|November 14, 2025
PubMed
Summary
This summary is machine-generated.

Nitridation enhances zerovalent iron (ZVI) for environmental remediation by improving contaminant removal and material lifespan. This modification boosts efficiency and durability, addressing limitations of traditional ZVI applications.

Keywords:
Fe–N coordination structuresiron nitridesmechanochemical nitridationthermochemical nitridationzero-valent iron

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Area of Science:

  • Environmental Science
  • Materials Science
  • Chemistry

Background:

  • Zerovalent iron (ZVI) is crucial for environmental remediation but suffers from passivation and side reactions.
  • Modifications are needed to enhance ZVI's efficiency, sustainability, and lifespan.

Purpose of the Study:

  • To review nitridation methods for iron-based materials.
  • To assess the impact of nitridation on material properties and contaminant reduction performance.

Main Methods:

  • Examination of thermochemical and mechanochemical nitridation techniques.
  • Analysis of resulting material morphology, physicochemical properties, and remediation performance.
  • Review of contaminant reduction mechanisms, particularly dechlorination.

Main Results:

  • Nitridation forms iron nitrides or Fe-N coordination structures, enhancing dechlorination.
  • Iron nitrides improve electron transfer and suppress hydrogen evolution.
  • Fe-N coordination structures facilitate proton transfer, altering dechlorination kinetics.

Conclusions:

  • Nitridation mitigates ZVI passivation, extending its reactive lifespan and improving corrosion resistance.
  • Nitridated iron materials offer potential for efficient, selective, and durable environmental remediation.
  • Further research is needed for widespread adoption in full-scale applications.