Preparation of TiO<sub>2</sub> nanoparticles via cathode glow discharge electrolysis and its photocatalytic performance in the degradation of methylene blue
Quanfang Lu, Juanlong Li, Bo Wang, Jie Yu, Xiaojuan Ma, Lijuan Cui, Feng Yan
Abstract
Abstract TiO 2 nanoparticles (NPs) were prepared by cathode glow discharge electrolysis in sodium fluoride solution, in which cetyltrimethyl ammonium bromide (CTAB) acted as a stabilizer, and a Ti foil and a Pt needlepoint served as the anode and the cathode, respectively. The structure, component, and morphology of TiO 2 NPs were characterized. A possible preparation mechanism was proposed. In addition, the photocatalytic performance of TiO 2 NPs was assessed through the degradation of methylene blue (MB). The results showed that TiO 2 NPs with 12.7 nm particle size could be prepared at 500 V discharge voltage. CTAB, as a stabilizer, can diminish the agglomeration. The photocatalytic property of TiO 2 NPs for the degradation of MB with 0.15% CTAB is markedly superior to that of TiO 2 NPs without adding CTAB and commercial TiO 2 NPs (P25).