论文部分内容阅读
利用大豆卵磷脂在水中自发形成的囊泡作为纳米反应器得到含有磷脂的铕前驱体,经灼烧得到Eu2O3纳米粒子。对该含磷脂的铕前驱体进行荧光光谱分析、傅立叶变换红外分析(FTIR)以及热分析(TG-DTA),结果显示,在纳米粒子的制备过程中Eu3+与大豆卵磷脂络合形成了Eu-O-P键;该前驱体经720℃高温灼烧后得到的纳米样品经XRD分析发现EuPO4相的存在,并确认了Eu3+通过磷氧键与卵磷脂的亲水头部相结合。经过以上分析,对该系统中纳米粒子的形成机理有了初步的认识。
The vesicles formed by spontaneous formation of soybean lecithin in water are used as the nano-reactor to obtain the europium precursor containing phospholipid and then calcined to obtain the Eu2O3 nanoparticles. The phospholipid-containing europium precursor was analyzed by fluorescence spectroscopy, Fourier transform infrared spectroscopy (FTIR) and thermal analysis (TG-DTA). The results showed that Eu3 + complexed with soybean lecithin during the preparation of nano- OP bond. The precursor obtained after calcination at a high temperature of 720 ° C showed the presence of the EuPO4 phase by XRD analysis and confirmed that the Eu3 + bound to the hydrophilic head of lecithin via a phosphoxy bond. After the above analysis, the formation of nano-particles in this system have a preliminary understanding.