Fig. 2From: Van-mediated self-aggregating photothermal agents combined with multifunctional magnetic nickel oxide nanoparticles for precise elimination of bacterial infectionsA UV–vis absorption spectra and B Zeta potential of AuNPs@Van, NiO NPs and NAV. C FT-IR spectra and D XRD patterns of NiO NPs and NAV. E Magnetic hysteresis loop of NAV. F XPS survey spectra and high-resolution XPS spectra of G Ni 2p, H O 1 s, and I Au 4f orbits for NAVBack to article page