以柠檬酸钙和尿素为原料,通过微波法制备了具有黄绿色荧光特性的氮掺杂碳量子点(N-CQDs)。在氮气氛围下制备聚苯乙烯(PS)微球,在PS微球表面复合乙烯基三乙氧基硅烷和N-CQDs,制备了具有荧光的微纳结构超疏水CQDs@PS复合微球。通过傅里叶变换红外光谱仪、紫外-可见分光光度计、扫描电子显微镜和热重分析仪对N-CQDs和荧光CQDs@PS复合微球的结构和形貌进行表征。结果表明:微波法制备的N-CQDs具有共轭结构,荧光CQDs@PS复合微球呈树莓状结构,接触角可以达到152°,疏水效果良好且热稳定性得到提高。
N-doped carbon quantum dots (N-CQDs) with yellow-green fluorescence characteristics were prepared by microwave method using calcium citrate and urea.Polystyrene (PS) microspheres were prepared in nitrogen atmosphere,and then triethoxyvinylsilane and N-CQDs were successfully composited on the surface of the PS microspheres to prepare micro-nano structured superhydrophobic CQDs@PS composite microspheres with fluorescence.The structures and morphologies of the N-CQDs and fluorescent CQDs@PS composite microspheres were characterized by Fourier transform infrared spectrometer,ultraviolet spectrometer,scanning electron microscope and thermogravimetric analyzer.The results showed that the N-CQDs prepared by microwave method had a conjugated structure,the fluorescent CQDs@PS microspheres exhibited raspberry-like structure,the contact angle could reach 152°,the hydrophobic effect was good,and the thermal stability was improved.
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基金资助
江苏省研究生科研与实践创新计划项目(KYCX22＿3035)
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