Biotechnologie et biomatériaux

Abstrait

Tailoring layered double hydroxide particles for catalytic, environmental and bio-applications

Szabolcs Muráth

Layered double hydroxides (LDHs) are inorganic lamellar materials with anion exchange capacity in the interlamellar space. Their crystals tend to have a diameter in the 50-1000 nm range, and owing to their facile structural and surface modifications they possess a range of potential applications. In our research, we focus on i) surface area tuning for improved catalytic properties, ii) contaminant removal from environmental samples and iii) immobilization of molecular or enzymatic antioxidants to reduce oxidative stress. Structural modifications were realized by i)-ii) surfactant-LDH and nanotube-LDH interactions to increase specific surface area and iii) developing LDH with high polyphenol content to obtain antioxidant hybrid materials or anchoring enzymes with peroxide and superoxide decomposition ability for the complete neutralization of arbitrarily generated reaction oxygen species in human cells.