title: Photocatalytic hydrogen production of the CdS/TiO2-WO3 ternary hybrid under visible light irradiation.
abstract: An attractive and effective method for converting solar energy into clean and renewable hydrogen energy is photocatalytic water splitting over semiconductors. The study aimed at utilizing organic sacrificial agents in water, modeled by formic acid, in combination with visible light driven photocatalysts to produce hydrogen with high efficiencies. The photocatalytic hydrogen production of cadmium sulfide (CdS)/titanate nanotubes (TNTs) binary hybrid with specific CdS content was investigated. After visible light irradiation for 3 h, the hydrogen production rate of 25 wt% CdS/TNT achieved 179.35 μmol·h(-1). Thanks to the two-step process, CdS/TNTs-WO3 ternary hybrid can better promote the efficiency of water splitting compared with CdS/TNTs binary hybrid. The hydrogen production of 25 wt% CdS/TNTs-WO3 achieved 212.68 μmol·h(-1), under the same condition. Coating of platinum metal onto the WO3 could further promote the reaction. Results showed that 0.2 g 0.1 wt% Pt/WO3 + 0.2 g 25 wt% CdS/TNTs had the best hydrogen production rate of 428.43 μmol·h(-1). The resultant materials were well characterized by high-resolution transmission electron microscope, X-ray diffraction, scanning electron microscopy, and UV-Vis spectra.
authors.affiliation: Graduate Institute of Environmental Engineering, National Taiwan University 71, Chou-Shan Rd., Taipei 106, Chinese Taiwan E-mail: sllo@ntu.edu.tw.
authors.forename: Yi-Lin
authors.initials: YL
authors.lastname: Chen
authors.affiliation: Graduate Institute of Environmental Engineering, National Taiwan University 71, Chou-Shan Rd., Taipei 106, Chinese Taiwan E-mail: sllo@ntu.edu.tw.
authors.forename: Shang-Lien
authors.initials: SL
authors.lastname: Lo
authors.affiliation: Graduate Institute of Environmental Engineering, National Taiwan University 71, Chou-Shan Rd., Taipei 106, Chinese Taiwan E-mail: sllo@ntu.edu.tw.
authors.forename: Hsiang-Ling
authors.initials: HL
authors.lastname: Chang
authors.affiliation: Graduate Institute of Environmental Engineering, National Taiwan University 71, Chou-Shan Rd., Taipei 106, Chinese Taiwan E-mail: sllo@ntu.edu.tw.
authors.forename: Hsiao-Mei
authors.initials: HM
authors.lastname: Yeh
authors.affiliation: Tianjin Key Laboratory of Water Quality Science and Technology, Tianjin Chengjian University, Tianjin 30084, China.
authors.forename: Liping
authors.initials: L
authors.lastname: Sun
authors.affiliation: Tianjin Key Laboratory of Water Quality Science and Technology, Tianjin Chengjian University, Tianjin 30084, China.
authors.forename: Chunsheng
authors.initials: C
authors.lastname: Oiu
mesh_terms: D019187:Cadmium Compounds / Q000737:chemistry*; D002384:Catalysis; D005561:Formates; D006859:Hydrogen / Q000737:chemistry*; D008027:Light; D043942:Nanotubes; D010087:Oxides / Q000737:chemistry*; D055668:Photochemical Processes; D013440:Sulfides / Q000737:chemistry*; D014025:Titanium / Q000737:chemistry*; D014414:Tungsten / Q000737:chemistry*; D014867:Water / Q000737:chemistry; D018508:Water Purification; D014961:X-Ray Diffraction
chemical_list: D019187:Cadmium Compounds; D005561:Formates; D010087:Oxides; D013440:Sulfides; C034939:cadmium sulfide; D014867:Water; C030544:formic acid; C009495:titanium dioxide; D006859:Hydrogen; C511604:tungsten oxide; D014025:Titanium; D014414:Tungsten