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Related Concept Videos

Catalysis02:50

Catalysis

30.0K
The presence of a catalyst affects the rate of a chemical reaction. A catalyst is a substance that can increase the reaction rate without being consumed during the process. A basic comprehension of a catalysts’ role during chemical reactions can be understood from the concept of reaction mechanisms and energy diagrams.
30.0K

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Related Experiment Video

Updated: Jan 6, 2026

Physical, Chemical and Biological Characterization of Six Biochars Produced for the Remediation of Contaminated Sites
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Physical, Chemical and Biological Characterization of Six Biochars Produced for the Remediation of Contaminated Sites

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Application of biochar and its composites in catalysis.

Honghong Lyu1, Qianru Zhang2, Boxiong Shen1

  • 1Tianjin Key Laboratory of Clean Energy and Pollution Control, School of Energy and Environmental Engineering, Hebei University of Technology, Tianjin, 300401, China.

Chemosphere
|October 2, 2019
PubMed
Summary

Biochar and its catalysts can generate reactive radicals for environmental remediation, overcoming adsorption limits. This review details their preparation, catalytic activity, and applications in oxidation, reduction, and photocatalysis.

Keywords:
BiocharCatalystEnvironmental applicationEnvironmental persistent free radicals

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Area of Science:

  • Environmental Science
  • Materials Science
  • Catalysis

Background:

  • Biochar, derived from biomass, is cost-effective and widely used in environmental remediation due to its large surface area.
  • Traditional biochar adsorbents reach saturated capacity, limiting their pollutant removal efficiency.
  • Recent advancements focus on biochar-based catalysts with enhanced properties for expanded applications.

Purpose of the Study:

  • To critically review recent research on biochar and biochar-based catalysts for environmental applications.
  • To summarize preparation methods, catalytic activity influences, and characterization techniques.
  • To discuss environmental applications based on oxidation, reduction, and photocatalysis mechanisms.

Main Methods:

  • Summarization of various biochar and biochar-based catalyst preparation techniques.
  • Discussion of synthetic conditions and transition metal effects on catalytic activity.
  • Description of methods for characterizing active sites in biochar-based catalysts.

Main Results:

  • Biochar's intrinsic free radicals can generate hydroxyl radicals (•OH) with oxygen.
  • Biochar-based catalysts activate oxidants to produce •OH and sulfate radicals (SO4•−).
  • Biochar acts as an electron acceptor, enhancing catalyst photodegradation efficiency.

Conclusions:

  • Synthesis conditions and catalyst loading are crucial for biochar's catalytic activity.
  • Biochar and its catalysts show significant potential in oxidation, reduction, and photocatalysis for environmental remediation.
  • This review offers insights into biochar catalysis and proposes future research directions.