This study aims to synthesize and evaluate the photocatalytic activity of bismuth terephthalate material (Bi-BDC) synthesized by solvothermal (ST) and microwave-assisted solvothermal (MW) methods. Differences in the crystal structure and crystal shape were assessed by analytical methods such as X-ray diffraction (XRD), scanning electron microscope (SEM), Fourier transform infrared (FT-IR) spectrum, X-ray photoelectron spectroscopy (XPS), N₂ adsorption/desorption, Raman spectrum, and thermal gravimetric analysis (TGA). From XRD, IR, Raman, and XPS results, the fully crystallized Bi-BDC materials were achieved regardless of the preparation router. Bi-BDC-MW exhibited spherical-like morphologies, producing between stacked lamellar, while Bi-BDC-ST method exhibited a heterogeneous structure. The TGA data indicated that Bi-BDC is thermally stable up to 300 °C, suggesting the excellent thermal stability of Bi-BDC. The surface area and pore volume of Bi-BDC-MW (18 m²/g and 85 × 10⁻³ cm³/g) are higher than those of Bi-BDC-ST (16 m²/g and 52 × 10⁻³ cm³/g), which is due to its well-defined lamellar microstructure and homogeneity of the crystals. Compared to Bi-BDC-ST, Bi-BDC-MW has a higher value in the content of oxygen vacancy. Moreover, the photocatalytic efficiency of Bi-BDC-MW was significantly higher than that of Bi-BDC-ST, in which 99.44% rhodamine B (RhB) is removed after 360 min of irradiation. The improved photocatalytic efficiency of Bi-BDC-MW is ascribed to the morphology, specific surface area, and oxygen defects, which exhibited the good separation of electrons and holes, as confirmed by the photoluminescence (PL). The results should open a new approach to enhancing the photocatalytic activity of bismuth terephthalate materials.

本研究旨在合成和评价溶剂热法（ST）和微波辅助溶剂热法（MW）合成的对苯二甲酸铋铋材料（Bi-BDC）的光催化活性。通过分析方法评估晶体结构和晶体形状的差异，例如X射线衍射（XRD），扫描电子显微镜（SEM），傅立叶变换红外（FT-IR）光谱，X射线光电子能谱（XPS），N ₂吸附/解吸，拉曼光谱和热重分析（TGA）。根据XRD，IR，拉曼和XPS结果，无论制备路由器如何，均可获得完全结晶的Bi-BDC材料。Bi-BDC-MW表现出球形的形态，在叠层之间产生，而Bi-BDC-ST方法表现出异质结构。TGA数据表明Bi-BDC在高达300°C的温度下具有热稳定性，这表明Bi-BDC具有出色的热稳定性。表面积和Bi-BDC-MW的孔体积（18米² / g，且85×10 ^-3厘米³ /克）比的Bi-BDC-ST的升高（16米² / g，且52×10 ^{- 3}厘米³/ g），这是由于其定义明确的层状微结构和晶体的均匀性。与Bi-BDC-ST相比，Bi-BDC-MW在氧空位含量方面具有更高的价值。此外，Bi-BDC-MW的光催化效率显着高于Bi-BDC-ST，后者在照射360分钟后被去除了99.44％的若丹明B（RhB）。Bi-BDC-MW的提高的光催化效率归因于形态，比表面积和氧缺陷，如光致发光（PL）所证实，这些缺陷表现出电子与空穴的良好分离。研究结果应为增强对苯二甲酸铋材料的光催化活性开辟新途径。