Highly ordered titania nanotube arrays for phosphoproteomics

A device for isolation of phosphopeptides in a sample, comprising:

• an ordered TiO2 nanotube array comprising ordered TiO2 nanotubes grown on a Ti surface, wherein the nanotubes point outward from the Ti surface, wherein the Ti surface is a Ti wire, and wherein the nanotubes point radially outward from the Ti wire;
• and
• a container for phosphopeptide isolation, wherein the ordered TiO2 nanotube array is located within the container, and wherein the sample is placed in the container to contact the ordered TiO2 nanotube array.