Environmental Charge-Mediated Nanopiezocatalysis for Sonodynamic Therapy.
basic_science · Level V
Where this comes from
- Record sourced from PubMed, PMID 40395005.
- Also identified by DOI 10.1021/acs.nanolett.5c02110.
- No licence information is recorded for this record.
- Because redistribution is not established, this page shows the abstract only. Follow the links below for the full text.
Abstract
Piezocatalysis garners growing attention in sonodynamic therapy (SDT). However, its mechanism remains controversial due to the prominent but conflicting theories of energy band and piezoelectric effect. The former just focuses on the role of carriers, while the latter emphasizes only the contribution of screening charges. This divergence greatly hinders the development of piezocatalysis-mediated SDT. Here, we demonstrate the combined action of carriers (electrons/holes) and screening charges on piezocatalysis and propose a new piezocatalytic model (termed environmental charge-mediated nanopiezocatalysis) based on defective BaTiO<sub>3</sub>@TiO<sub>2</sub> piezoelectric nanoparticles (D-B@T). The synergistic effect of carriers and screening charges endows D-B@T with superior reactive oxygen species generation capability under ultrasound stimulation and enables effective SDT treatment of bacterial pneumonia <i>in vivo</i>. This work offers an insightful understanding of piezocatalysis and guides the rational design of high-performance piezoelectric nanosonosensitizers for SDT.
Medical subject headings
- Titanium
- Ultrasonic Therapy
- Nanoparticles