All ILs were purchased from Kekaite Co. (Lanzhou, China). Reagent grade depleted Pr(NO3)3 and 3,3,5,5-tetramethylbenzidine (TMB) were obtained from Macklin Co. Ltd. (Shanghai, China). The trans-resveratrol was purchased from Solarbio Life Science (Beijing, China). All other chemicals, including hydrazine hydrate, ethylenediamine, H2O2 and ethanol, were of analytical grade and used without further purification.
Ultrasound synthesis was assisted by an ultrasonic homogenizer (220 V, 950 W) (Ningbo Scientz Biotechnology Co., Ltd.). Powder X-ray diffraction (XRD) analyses were performed on a Bruker D8 Advance diffractometer with Cu Kα radiation, and scanning electron microscopy (SEM) observations were performed with a Hitachi S-4800 scanning electron microscope, and the morphology and sizes of as-prepared materials were analyzed with JEOL 2100 high resolution transmission electron microscope (HRTEM) (JEOL, Japan). An EMGA-920 Oxygen Elemental Analyzer (HORIBA, Japan) was used to determine the oxygen content. The chemical composition of the products was examined with X-ray photoelectron spectrometer (XPS, ESCALAB 250Xi, ThermoFisher). UV-Visible absorption spectra were recorded on a UV-A390 spectrometer (AOE Instruments, Shanghai, China) with 1.0 cm path length.
Ultrasound synthesis was assisted by an ultrasonic homogenizer (220 V, 950 W) (Ningbo Scientz Biotechnology Co., Ltd.). Powder X-ray diffraction (XRD) analyses were performed on a Bruker D8 Advance diffractometer with Cu Kα radiation, and scanning electron microscopy (SEM) observations were performed with a Hitachi S-4800 scanning electron microscope, and the morphology and sizes of as-prepared materials were analyzed with JEOL 2100 high resolution transmission electron microscope (HRTEM) (JEOL, Japan). An EMGA-920 Oxygen Elemental Analyzer (HORIBA, Japan) was used to determine the oxygen content. The chemical composition of the products was examined with X-ray photoelectron spectrometer (XPS, ESCALAB 250Xi, ThermoFisher). UV-Visible absorption spectra were recorded on a UV-A390 spectrometer (AOE Instruments, Shanghai, China) with 1.0 cm path length.