Fluorescent copper nanoparticles(CuNPs)were successfully synthesized by a liquid-phase chemical reduction method using copper sulfate pentahydrate(CuSO4·5H2O)as the copper source and anti-cyclic hematoxylin acid(AA)as the reducing and protective agent.CuNPs had an excitation wavelength dependence with a maximum emission wavelength of 440 nm and showed blue fluorescence.CuNPs structures and their optical properties were characterized by transmission electron microscope(TEM),ultraviolet and visible spectrophotometry(UV-Vis),fluorescence spectroscopy(FL),fourier transform infrared spectroscopy(FT-IR),energy dispersive spectroscopy(EDS),diffraction of X-rays(XRD),dynamic light scattering(DLS)and ZETA potential spectroscopy,respectively.The synthesized CuNPs were found to have temperature sensing properties in the temperature range of 25 to 85 ℃,with a calculated maximum relative temperature sensitivity of 1.95％·℃-1.The results indicated that the synthesized CuNPs showed potential applications in temperature sensing.
关键词
液相化学还原法/荧光铜纳米粒/温度传感
Key words
liquid-phase chemical reduction/fluorescent copper nanoparticles/temperature sensing
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