Panahi Atefeh, Ghanbari Mojgan, Dawi Elmuez A, Monsef Rozita, Reidh Abass Russul, Aljeboree Aseel M, Salavati-Niasari Masoud
Institute of Nano Science and Nano Technology, University of Kashan, P.O. Box 87317-51167, Kashan, Iran.
Nonlinear Dynamics Research Center (NDRC), Ajman University, Ajman P.O. Box 346, United Arab Emirates.
Ultrason Sonochem. 2023 May;95:106362. doi: 10.1016/j.ultsonch.2023.106362. Epub 2023 Mar 9.
Thulium vanadate (TmVO4) nanorods were successfully prepared by a simple sonochemical approach using Schiff-base ligands. Additionally, TmVO nanorods were employed as a photocatalyst. The most optimal crystal structure and morphology of TmVO4 have been determined and optimized by varying Schiff-base ligands, the molar ratio of H2Salen, the sonication time and power, and the calcination time. A Eriochrome Black T (EBT) analysis revealed that the specific surface area was 24.91 m2/g. A bandgap of 2.3 eV was determined by diffuse reflectance spectroscopy (DRS) spectroscopy, which makes this compound suitable for visible photocatalytic applications. In order to assess the photocatalytic performance under visible light, two anionic dyes (EBT) and cationic dyes (Methyl Violet (MV)) were used as models. A variety of factors have been studied in order to improve the efficiency of the photocatalytic reaction, including dye type, pH, dye concentration, and catalyst loading. Under visible light, the highest efficiency was achieved (97.7%) when 45 mg TmVO4 nanocatalysts were present in 10 ppm Eriochorome Black T at pH = 10.
采用席夫碱配体通过简单的声化学方法成功制备了钒酸铥（TmVO4）纳米棒。此外，将TmVO纳米棒用作光催化剂。通过改变席夫碱配体、H2Salen的摩尔比、超声时间和功率以及煅烧时间，确定并优化了TmVO4的最佳晶体结构和形态。铬黑T（EBT）分析表明比表面积为24.91 m2/g。通过漫反射光谱（DRS）光谱测定带隙为2.3 eV，这使得该化合物适用于可见光催化应用。为了评估可见光下的光催化性能，使用两种阴离子染料（EBT）和阳离子染料（甲基紫（MV））作为模型。为了提高光催化反应效率，研究了多种因素，包括染料类型、pH值、染料浓度和催化剂负载量。在可见光下，当在pH = 10的10 ppm铬黑T中存在45 mg TmVO4纳米催化剂时，实现了最高效率（97.7%）。
