【摘要】 以LaCl₃为原料合成醇胺基镧（Ⅲ）配合物1，将其作为前驱体通过原子层沉积法（ALD）制备La₂O₃/TiO₂催化剂。利用红外光谱、核磁氢谱以及热重分析探究了醇胺基镧配合物1的结构与热化学性质。热重分析结果表明，配合物1具有良好的热稳定性和合适的挥发性，满足原子层沉积（ALD）的要求。通过XRD、SEM和UV-Vis吸收光谱表征了La₂O₃/Ti O₂催化剂的晶型、形貌及光学性能。结果表明，当循环数为90，沉积温度为200℃时，La₂O₃/Ti O₂催化剂对紫外光的吸收最强。与纯的二氧化钛及浸渍法制备的La₂O₃/Ti O₂相比，ALD法制备的La₂O₃/TiO₂催化剂对亚甲基蓝的降解速率显著提高至100%。更多还原

【Abstract】 The alcohol-amine lanthanum（Ⅲ）compound 1 is synthesized from LaCl₃and is then used as a precursor to prepare La₂O₃/Ti O₂catalyst by atomic layer deposition（ALD）.¹HNMR spectrum,FTIR,and thermogravimetric analysis（TGA）are used to explore the structure and thermochemical properties of compound 1.The thermogravimetric results show that compound 1 has good thermal stability and suitable volatility to meet the requirements of ALD.The crystal form,morphology,elemental distribution,composition and optical properties of La₂O₃/Ti O₂catalysts are characterized by XRD,SEM,EDS and UV-Vis absorption spectra.The results show that when the number of cycles is 90 and the deposition temperature is 200℃,the La₂O₃/Ti O₂catalyst has the strongest absorption of ultraviolet light.Compared with the pure titanium dioxide and La₂O₃/Ti O₂prepared by impregnation method,the degradation rate of La₂O₃/Ti O₂catalyst prepared by ALD method to methylene blue is significantly increased to 100%.更多还原