Fig. 2: Structural characterizations and US-activated tandem catalysis of CpBT nanoreactors. | Nature Communications

Fig. 2: Structural characterizations and US-activated tandem catalysis of CpBT nanoreactors.

From: Ultrasound-activated piezo-hot carriers trigger tandem catalysis coordinating cuproptosis-like bacterial death against implant infections

Fig. 2

a TEM image and elemental mapping of CpBT. Similar TEM images were obtained for more than three times experiments. b. HRTEM image of CpBT with lattice fringes corresponding to the (101) plane. Similar TEM images were obtained for more than three times experiments. c XRD patterns. d SS-PFM measurement. e The temperature dependence of relative permittivity of mBT and pure BT measured at 1 kHz. f Free-energy profiles for pure BT and mBT at 37 °C. g Comparison of MB degradation by mBT, pBT, CpBT, and CpBT+H2O2 under US stimulation. h The reaction mechanism of Cu+ detection by neocuproine and the related UV-Vis absorbance spectra of neocuproine treated with CpBT and US stimulation. i XPS of Cu 2p3/2 for CpBT before and after US stimulation (the insets show Cu LMM spectra). j Peak ratio of Cu+ to Cu2+ at 570 eV and 932 eV in XPS spectra of CpBT before and after US stimulation. k •OH generation by ESR. l The proposed mechanism of enhanced ROS generation by US-activated tandem catalysis of SDT and CDT based on CpBT nanoreactors.

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