Modification of TiO2 nanotubes arrays by CdS and their photoelectrocatalytic hydrogen generation properties

• Published in: Chinese science bulletin Vol. 53; no. 12; pp. 1929 - 1932
• Main Authors: Zhang, JianLing, Zhang, XingWang, Lei, LeCheng
• Format: Journal Article
• Language: English
• Published: Heidelberg SP Science in China Press 01.06.2008
• Subjects: Brief Communication; Chemistry/Food Science; Earth Sciences; Engineering; Humanities and Social Sciences; Life Sciences; multidisciplinary; Physics; Science; Science (multidisciplinary); 二氧化钛; 制造方法; 纳米材料; 装饰技术; nanotubes; photoelectrocatalysis; CdS; TiO; hydrogen generation
• ISSN: 1001-6538; 2095-9273; 1861-9541; 2095-9281
• DOI: 10.1007/s11434-008-0258-9

In order to realize hydrogen generation under visible light, novel CdS/TiO2 nanotubes arrays are developed by electrochemical anodizaUon of Ti in 0.15 mol/L NHTF ＋ 0.08 mol/L H2C2O4 electrolyte. The diameter of the nanotube is 80-100 nm and the length is approximately 550 nm. The CdS nano-particles are deposited on the TiO2 nanotubes arrays by chemical bath deposition （CBD） in the ammonia-thiourea system. A 300 W Xe lamp is used as the light source, CdS/TiO2 nanotube arrays are used as the photoanode with the application of 1.0 V bath voltage, and 0.1 mol/L Na2S ＋ 0.04 mol/L Na2SO3 solution is used as the electrolyte, then the rate of photoelectrocatalytic hydrogen generation is 245.4 μL/（h·cm^2）. This opens new perspectives for photoelectrocatalytic hydrogen generation by using CdS/TiO2 nanotubes arrays.