Synthesis and Characterization of PVP/Tb4/3L?7H2O Luminescent Complex

2nd International Symposium on Resource Exploration and Environmental Science

生态环境科学

Zhang, Jianhui^1 ; Yuan, Bizhen^1 ; Ren, Huijuan^1

Zhuhai College of Jilin University, Zhuhai, China^1

关键词: Chemical constitution;    Fourier transform infra red (FTIR) spectroscopy;    Inductively coupled plasma atomic emission spectroscopy;    Photoluminescence spectrum;    Polyvinyl pyrrolidone;    Synthesis and characterizations;    Ultra violet excitation;    X-ray diffraction analyses (XRD);   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/170/3/032043/pdf
DOI  :  10.1088/1755-1315/170/3/032043

学科分类：环境科学（综合）

来源: IOP

【 摘 要 】

Rare earth terbium [Tb (III)]-pyromellitic acid [H4L] luminescent complex has been synthesized in polyvinylpyrrolidone (PVP) matrix by precipitation method. The chemical constitution of the complex has been demonstrated as PVP/Tb4/3L•7H2O by a combination of elemental analysis, inductively coupled plasma-atomic emission spectroscopy (ICP-AES) and Fourier-transform infrared spectroscopy (FT-IR). X-ray diffraction analysis (XRD) has shown that the complex is a new kind of crystal whose structure is totally different from the ligand. The morphology of the complex has been investigated by scanning electron microscopy (SEM). The results have shown that the well dispersed complex has a bulk crystal structure and the diameter of the crystal is about 1-2 μm. Thermogravimetric analysis (TG) has indicated that the luminescent complex is thermally stable below 467 °C. Photoluminescence spectra (PL) have revealed that the complex can emit Tb3+ characteristic green fluorescence under ultraviolet excitation.