HYBRID EVENT: You can participate in person at Orlando, USA or Virtually from your home or work.

6th Edition of World Nanotechnology Conference

April 24-25, 2023

April 24 -26, 2023 | Orlando, USA
World Nano 2023

Qingye Lu

Qingye Lu, Speaker at Nanoscience Conferences
University of Calgary, Canada
Title : Nanoparticle cellulose aerogel for dye degradation and antibacterial applications


Compared with the materials like membranes, inorganic particles and textiles, the aerogel used for supporting metal nanoparticles owns outstanding benefits like large surface area for loading nanoparticles, lightweight, and robust mechanical strength against deformation. Despite the benefits mentioned above, the aerogel as support is required to have sufficient hydrophilicity for contacting targeted aqueous solution if applied to wastewater treatment. Based on these reasons, the cellulosic material is the ideal candidate for constructing the supporting material due to the good hydrophilicity of cellulose itself and its wide availability in nature. Besides, the environmentally benign cellulosic material could guarantee no generation of secondary hazards when treating contaminants in the water system. In the talk, two kinds of nanoparticle cellulose aerogel will be discussed. A metal-organic framework (MOF) composite material, named as copper-benzenedicarboxylate/cellulose aerogel (CuBDC/CA), was designed and synthesized by one-pot precursor preparation of cellulose aerogels anchored with copper, followed by in-situ growth of CuBDC in the presence of terephthalic acid. The aerogel composite showed great potential in wastewater treatment, including dye degradation and antibacterial assays. More than 90% methylene blue could be decomposed by CuBDC/CA in 240 min via the Fenton-like reaction, and the recycling test revealed its good reusability. Moreover, this composite exhibited great antibacterial performance (more than 99.99%) towards commonly used lab strains as well as multidrug-resistant pathogens, including Escherichia coli, Staphylococcus aureus, and Pseudomonas aeruginosa. The screening tests indicated that the mechanism of killing effect was associated with the damage of bacterial envelope integrity. Another examples is Ag/lignin nanoparticles physically crosslinked in the cellulose hydrogels, followed by freeze-drying to obtain the final Ag/lignin nanoparticle-loaded cellulose aerogel. The Ag/lignin NP-loaded aerogel also showed robust killing efficiency against different pathogenic bacteria in aqueous solution (Escherichia coli: >99.99%, Pseudomonas aeruginosa: >99.9%, Vibrio cholera: >99.99%, Staphylococcus aureus: >99.99%, Bacillus subtilis: >97.4%). Moreover, the loaded Ag/lignin NPs provided the aerogel with excellent catalytic degradation ability toward various organic compounds, including dyes, pollutants, and antibiotics.

Audience Take Away:

  • Synthesis of nanoparticle cellulose aerogel.
  • Learn the performance of the materials.
  • Guide the development of similar materials.


Dr. Qingye Lu obtained her PhD in Analytical Chemistry at University of Alberta, Canada and was then trained as postdoctoral fellow in the Department of Civil and Environmental Engineering, the Department of Chemical and Materials Engineering at the University of Alberta. She joined the Department of Chemical and Petroleum Engineering at the University of Calgary as a tenure-tracked Assistant Professor in July 2016 and got tenured with promotion to Associate Professor in July 2021. Her research interests are in colloids and interfacial science, biomimetic and natural materials, nanomaterials and nanotechnology. She has published one book chapter and >75 journal papers.