(1. 黑龍江大學 化學化工與材料學院 功能無機材料教育部重點實驗室，哈爾濱 150080； 2. 湘潭大學 環(huán)境與資源學院 環(huán)境科學與工程系，湘潭 411100)
摘 要: 以鈦酸四丁酯為鈦源、氫氟酸為氟源、硝酸銅為銅源，乙醇為溶劑，采用蒸汽熱法制備氟銅共摻雜的TiO2空心微球，采用SEM、XRD、UV-Vis、BET等對氟銅共摻雜的TiO2空心微球的形貌特征、晶相結構、吸光性能及氟、銅的存在形式進行表征，以陽離子藍的光催化降解為目標反應，評價其光催化活性。結果表明：氟銅共摻雜的TiO2空心微球主要通過水蒸氣產生的氣泡為模板獲得，氟銅共摻雜增大TiO2的比表面積，其中TiO2以銳鈦礦存在，Cu2+進入TiO2晶格中，大部分F以化學吸附態(tài)存在于TiO2的表面形成≡Ti—F基團，少量F進入晶格內部。相比純TiO2空心微球，氟銅共摻雜的TiO2空心微球的光催化活性明顯提高，用氙燈模擬可見光，對初始濃度為20 mg/L的陽離子藍溶液進行光催化降解，30 min后其降解率達到99.8%。
關鍵字: 二氧化鈦；共摻雜；空心微球；光催化；陽離子藍溶液
（1. Key Laboratory of Functional Inorganic Material Chemistry, Ministry of Education, School of Chemistry and Materials Science, Heilongjiang University, Harbin 150080, China; 2. Department of Environmental Science and Engineering, College of Environment and Resources, Xiangtan University, Xiangtan 411100, China）
Abstract:F and Cu co-doping TiO2 hollow microspheres were synthesized via steam heat method, using tetrabutyl orthotitanate as Ti source, hydrofluoric acid as F source, cupric nitrate as Cu source and ethanol as solvent. The structure and properties of the resulting samples were characterized by SEM, XRD, UV-Vis, BET and so on. Photocatalytic degradation of cationic blue was used as a probe reaction to evaluate their photocatalytic activity. The results indicate that the F and Cu co-doping TiO2 hollow microspheres are anatase phase structure, Cu2+ enters into the TiO2 lattice, the fluorine atoms mainly distributed on the surface of TiO2, and exist in forms of chemical-adsorption, the F and Cu co-doping TiO2 hollow microspheres are achieved by the template of water vapor bubbles. The F and Cu co-doping TiO2 hollow microspheres increase the specific surface area of TiO2. Compared to pure TiO2 hollow microspheres, the F and Cu co-doping TiO2 hollow microspheres show much higher degradation efficiency under xenon lamp irradiation, and the degradation rate of which can be up to 99.8% during the photodegradation of cationic blue with the initial concentration of 20 mg/L for 30 min.
Key words: titanium dioxide; co-doping; hollow microspheres; photocatalysis; cationic blue
