Surface modified BaTiO3 nanoparticles as the matrix for phospholipids and as extracting probes for LLME of hydrophobic proteins in Escherichia coli by MALDI-MS

Photographs of (a) as received BaTiO3 NPs, (b) after H2O2-treated BaTiO3 NPs and (c) dispersed HOA-modified BaTiO3 NPs in toluene. TEM images of (c) as received BaTiO3 NPs and (d) HOA-modified BaTiO3 NPs.