Near zero-strain silicon oxycarbide interphases for stable Li-ion batteries.

We investigate silicon oxycarbide nanotubes that incorporate Si, SiC, and silicon oxycarbide phases, which exhibit near zero-strain volume expansion, leading to reduced electrolyte decomposition. The composite effectively accommodates the formation of c-Li15Si4, as validated by in situ TEM analyses and electrochemical tests, thereby proposing a promising solution for Li-ion battery anodes.

Synthesis of 64Cu-Radiolabeled Folate-Conjugated Iron Oxide Nanoparticles for Cancer Diagnosis.

We report the synthesis of 64Cu-labeled folate-conjugated magnetic nanoparticles for positron emission tomography (PET)/magnetic resonance imaging (MRI)-based diagnosis of cancer. The citrate/hydrazine-stabilized Fe3O4 nanoparticles measuring ~50 nm were utilized for target synthesis. Radio-thin-layer chromatography (TLC) analysis shows the formation of 64Cu-labeled nanomaterial with a radiochemical purity of 82.17% and a stability of ~90% in buffer solution and human serum for 24 h. Moreover, the sample exhibited good cellular uptake in breast (SKBR3), oral (KB) and lung (A549) cancer cell lines.