Photocatalytic hydrogen production of the CdS/TiO2-WO3 ternary hybrid under visible light irradiation
Journal
Water Science and Technology
Journal Volume
73
Journal Issue
7
Pages
1667-1672
Date Issued
2016
Author(s)
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 molh-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 molh-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 molh-1. The resultant materials were well characterized by high-resolution transmission electron microscope, Xray diffraction, scanning electron microscopy, and UV-Vis spectra. © IWA Publishing 2016.
Subjects
Hydrogen; Photocatalysis; Ternary hybrid; Titanium nanotubes
SDGs
Other Subjects
Bins; Cadmium sulfide; High resolution transmission electron microscopy; Hydrogen; Irradiation; Light; Nanotubes; Photocatalysis; Platinum; Scanning electron microscopy; Solar energy; Solar power generation; Yarn; Hydrogen production rate; Photocatalytic hydrogen production; Photocatalytic water splitting; Renewable hydrogens; Sacrificial agents; Ternary hybrid; Visible light driven photocatalysts; Visible-light irradiation; Hydrogen production; cadmium sulfide; formic acid; hydrogen; platinum; titanium dioxide; tungsten; tungsten trioxide; unclassified drug; water; cadmium derivative; cadmium sulfide; formic acid derivative; hydrogen; nanotube; oxide; sulfide; titanium; titanium dioxide; tungsten; tungsten oxide; cadmium; efficiency measurement; electron; formic acid; hydrogen; irradiation; light; platinum; solar power; titanium; Article; catalyst; energy conversion; light; photocatalysis; renewable energy; scanning electron microscopy; solar energy; transmission electron microscopy; ultraviolet spectroscopy; X ray diffraction; catalysis; chemistry; photochemistry; water management; Cadmium Compounds; Catalysis; Formates; Hydrogen; Light; Nanotubes; Oxides; Photochemical Processes; Sulfides; Titanium; Tungsten; Water; Water Purification; X-Ray Diffraction
Type
journal article