Figure 2
From: Multifunctional Cu2−xTe Nanocubes Mediated Combination Therapy for Multi-Drug Resistant MDA MB 453
XPS analysis of the NCs showing spectrum of wide, Cu 2p, Te 3d and Cu LMM peak.
Two distinct peaks at 931.83 eV and 951.65 eV were assigned to Cu 2p3/2 and Cu 2p1/2 confirming Cu+ oxidation state of Cu. The peaks at binding energies of 571.56 and 581.86 eV were consistent with Te 3d5/2 and 3d3/2 arising from Te2− oxidation state. The actual oxidation state of Cu was found to be Cu+1 by analyzing Cu LMM peak.
