Pap Zsolt, Tóth Zsejke Réka, Danciu Virginia, Baia Lucian, Kovács Gábor
Faculty of Chemistry and Chemical Engineering, Babeș-Bolyai University, Arany János 11, RO-400028 Cluj-Napoca, Romania.
Faculty of Physics, Babeș-Bolyai University, M. Kogălniceanu 1, RO-400084 Cluj-Napoca, Romania.
Materials (Basel). 2014 Dec 31;8(1):162-180. doi: 10.3390/ma8010162.
In the present work, the influence of a gold nanoparticle's shape was investigated on the commercially available Evonik Aeroxide P25. By the variation of specific synthesis parameters, three differently shaped Au nanoparticles were synthetized and deposited on the surface of the chosen commercial titania. The nanoparticles and their composites' morphological and structural details were evaluated, applying different techniques such as Diffuse Reflectance Spectroscopy (DRS), X-ray Diffraction (XRD), and Transmission Electron Microscopy (TEM). The influence of the Au nanoparticles' shape was discussed by evaluating their photocatalytic efficiency on phenol and oxalic acid degradation and by investigating the H₂ production efficacy of the selected composites. Major differences in their photocatalytic performance depending on the shape of the deposited noble metal were evidenced.
在本研究中，研究了金纳米颗粒形状对市售赢创德固赛二氧化钛P25的影响。通过改变特定的合成参数，合成了三种不同形状的金纳米颗粒，并将其沉积在所选用的商用二氧化钛表面。应用不同技术，如漫反射光谱（DRS）、X射线衍射（XRD）和透射电子显微镜（TEM），对纳米颗粒及其复合材料的形态和结构细节进行了评估。通过评估金纳米颗粒对苯酚和草酸降解的光催化效率以及研究所选复合材料的产氢效率，讨论了金纳米颗粒形状的影响。结果表明，根据沉积贵金属的形状，其光催化性能存在显著差异。
