HYBRID EVENT: You can participate in person at Tokyo, Japan or Virtually from your home or work.
Huanling Xie, Speaker at Green Chemistry and Catalysis Conferences
School of Chemistry and Chemical Engineering, China
Title : Various macromolecular carbons targeted at carbon peaking and carbon neutralization and their applications


The soil was the material basis for human survival, and heavy metal pollution was caused by a large number of mining. Heavy metals in the soil have seriously exceeded the standard, and the risk of heavy metal pollution of agricultural products by farming soil has seriously increased. Soil hardening causes poor soil permeability, decreased microbial activity, even an anaerobic state, and a large amount of carbon dioxide released from the soil. Through further processing of crop waste, even micro nano, nanocomposite materials with good pore permeability are prepared. It was used to improve soil texture and enhance soil permeability. Aiming at carbon peaking and carbon neutralization, macromolecular carbons were prepared from biological waste through various chemical treatments. Biological wastes mainly include corn straw, wheat straw, walnut shell, apricot shell, etc. It was mainly stripped into nano graphene by concentrated sulfuric acid, potassium permanganate and hydrogen peroxide. Then, corn straw and wheat straw were hydrothermally prepared into hydrothermal carbon, which was mixed with nanographene to prepare nano-graphene-modified hydrothermal carbon. The hydrothermal carbon modified by nano graphene was analyzed and characterized in detail, such as scanning electron microscope, transmission electron microscope, specific surface area, pore size analysis, and infrared analysis. The hydrothermal carbon-modified nanographene has a very large specific surface area and good channel permeability. It has very good adsorption performance for heavy metal ions in the soil. Applied to the adsorption of heavy metals in soil. It was used to enhance the permeability of the soil, enhance the activity of microorganisms in the soil, and reduce the emission of carbon dioxide in the soil

 Audience Take Away:

  • Hydrothermal carbon-modified nano-graphene was prepared successfully.
  • Preparation of hydrothermal carbon from crop waste by hydrothermal treatment.
  • Application in the removal of heavy metals in soil                                   
  • Improve soil texture 
  • Enhance the activity of microorganisms in soil
  • Reduce carbon dioxide emissions from soil


Dr. Xie studied Chemistry at CUT, China as Professor in 2020. She then joined the research group at the CIT, China. She received her PhD degree in 2007 at the Beijing Institute of Technology.