Pu Hong, Tian Congxue, Zhang Hui
College of Chemistry and Chemical Engineering, Southwest Petroleum University, Chengdu, 610500, China.
College of Vanadium and Titanium, Panzhihua University, Panzhihua, 617000, China.
Sci Rep. 2024 Dec 28;14(1):31258. doi: 10.1038/s41598-024-82640-z.
A cost-effective industrial TiOSO solution was employed to fabricate visible light active sulfur-doped titanium dioxide (S-TiO) via a facile hydrothermal method. The effect of calcination temperature on morphology, particle size, crystallinity, and photocatalytic property of S-TiO was systematically investigated. Successful incorporation of sulfur into TiO was confirmed by carbon-sulfur analysis, X-ray photoelectron spectroscopy (XPS), and Energy dispersive spectrometer (EDS). The research results demonstrated that calcination temperature significantly impacted the crystallinity, specific surface area, sulfur content, and light absorption properties of S-TiO. The catalyst calcined at 400 °C revealed the highest photocatalytic activity, with a rate constant of 0.02408 min, approximately 25 times higher than commercial P25 catalyst. The higher activity was attributed to the synergistic effect of well-crystallized anatase phase, specific surface area, and red shift of spectral absorption.
采用一种具有成本效益的工业级TiOSO溶液，通过简便的水热法制备了可见光活性硫掺杂二氧化钛（S-TiO）。系统研究了煅烧温度对S-TiO的形貌、粒径、结晶度和光催化性能的影响。通过碳硫分析、X射线光电子能谱（XPS）和能量色散光谱仪（EDS）证实了硫成功掺入TiO中。研究结果表明，煅烧温度对S-TiO的结晶度、比表面积、硫含量和光吸收性能有显著影响。在400°C煅烧的催化剂显示出最高的光催化活性，速率常数为0.02408 min，约为商用P25催化剂的25倍。较高的活性归因于结晶良好的锐钛矿相、比表面积和光谱吸收红移的协同效应。
