Preparation of cadmium-zinc sulfide nanoparticles modified titanate nanotubes with high visible-light photocatalytic activity

• Published in: Colloids and surfaces. A, Physicochemical and engineering aspects Physicochemical and engineering aspects, 2011-07, Vol.384 (1), p.749-751
• Main Authors: Li, Xiangqing, Yin, Die-er, Kang, Shi-Zhao, Mu, Jin, Wang, Jian, Li, Guodong
• Format: Article
• Language: English
• Subjects: Cadmium-zinc sulfide; colloids; ion exchange; lighting; nanoparticles; nanotubes; photocatalyst; Surface modification; Titanate nanotubes; ultrasonics; Visible-light photocatalysis
• ISSN: 0927-7757; 1873-4359
• DOI: 10.1016/j.colsurfa.2011.04.028

[Display omitted] ► The titanate nanotubes modified with Cd 0.8Zn 0.2S nanoparticles were prepared. ► The visible photocatalytic activity of the modified TiNTs was evaluated. ► They are an efficient photocatalyst under visible-light irradiation. Titanate nanotubes (TiNTs) were modified in situ with cadmium-zinc sulfide nanoparticles by an ultrasound ion-exchange method combined with a hydrothermal process. The target product (TiNTs/Cd 0.8Zn 0.2S) showed a wide visible-light response and high visible-light photocatalytic activity. Degradation efficiency of rhodamine B in water was up to 96.6% with 1 mg mL −1 of TiNTs/Cd 0.8Zn 0.2S photocatalyst under visible-light illumination for 90 min. The result demonstrated that the photocatalytic activity of TiNTs under visible-light illumination could be increased dramatically by modification with the ternary sulfide Cd 0.8Zn 0.2S nanoparticles.