Hamza Zahraa A, Dawood Jamal J, Jabbar Murtadha Abbas
Department of Materials Engineering, University of Technology-Iraq, Bagdad 10066, Iraq.
Department of Mechanical Engineering, College of Engineering, University of Basrah, Basrah 61004, Iraq.
Molecules. 2024 Sep 27;29(19):4603. doi: 10.3390/molecules29194603.
Regarding photocatalytic oxidative desulphurization (PODS), titanium oxide (TiO) is a promising contender as a catalyst due to its photocatalytic prowess and long-term performance in desulphurization applications. This work demonstrates the effectiveness of double-doping TiO in silver (Ag) and molybdenum (Mo) for use as a novel catalyst in the desulphurization of light-cut hydrocarbons. FESEM, EDS, and AFM were used to characterize the morphology, doping concentration, surface features, grain size, and grain surface area of the Ag/Mo powder. On the other hand, XRD, FTIR spectroscopy, UV-Vis, and PL were used for structure and functional group detection and light absorption analysis based on TiO's illumination properties. The microscopic images revealed nanoparticles with irregular shapes, and a 3D-AFM image was used to determine the catalyst's physiognomies: 0.612 nm roughness and a surface area of 811.79 m/g. The average sizes of the grains and particles were calculated to be 32.15 and 344.4 nm, respectively. The XRD analysis revealed an anatase structure for the doped TiO, and the FTIR analysis exposed localized functional groups, while the absorption spectra of the catalyst, obtained via UV-Vis, revealed a broad spectrum, including visible and near-infrared regions up to 1053.34 nm. The PL analysis showed luminescence with a lower emission intensity, indicating that the charge carriers were not thoroughly combined. This study's findings indicate a desulphurization efficiency of 97%. Additionally, the promise of a nano-homogeneous particle distribution bodes well for catalytic reactions. The catalyst retains its efficiency when it is dried and reused, demonstrating its sustainable use while maintaining the desulphurization efficacy. This study highlights the potential of the double doping approach in enhancing the catalytic properties of TiO, opening up new possibilities for improving the performance of photo-oxidative processes.
关于光催化氧化脱硫（PODS），由于其光催化能力以及在脱硫应用中的长期性能，氧化钛（TiO）作为一种催化剂是很有前景的竞争者。这项工作证明了在银（Ag）和钼（Mo）中双掺杂TiO作为轻质烃脱硫新型催化剂的有效性。使用场发射扫描电子显微镜（FESEM）、能谱仪（EDS）和原子力显微镜（AFM）来表征Ag/Mo粉末的形态、掺杂浓度、表面特征、晶粒尺寸和晶粒表面积。另一方面，X射线衍射（XRD）、傅里叶变换红外光谱（FTIR）、紫外可见光谱（UV-Vis）和光致发光（PL）用于基于TiO的光照特性进行结构和官能团检测以及光吸收分析。微观图像显示出形状不规则的纳米颗粒，并且使用三维原子力显微镜（3D-AFM）图像来确定催化剂的形貌：粗糙度为0.612 nm，表面积为811.79 m²/g。计算得出晶粒和颗粒的平均尺寸分别为32.15和344.4 nm。XRD分析表明掺杂的TiO具有锐钛矿结构，FTIR分析揭示了局部官能团，而通过紫外可见光谱获得的催化剂吸收光谱显示出宽光谱，包括高达1053.34 nm的可见光和近红外区域。PL分析显示发光强度较低，表明电荷载流子没有完全复合。这项研究的结果表明脱硫效率为97%。此外，纳米均匀颗粒分布的前景对催化反应很有利。该催化剂在干燥和再利用时保持其效率，证明了其可持续使用同时维持脱硫效果。这项研究突出了双掺杂方法在增强TiO催化性能方面的潜力，为改善光氧化过程的性能开辟了新的可能性。
