Photochemical preparation of Cd/CdS photocatalysts and their efficient photocatalytic hydrogen production under visible light irradiation

Abstract

A certain amount of Na2S2O3·5H2O solution added to the solution containing cadmium ions to form Cd/CdS photocatalysts could remove cadmium ions and produce hydrogen efficiently under visible light irradiation.

Surface Defects Enhanced Visible Light Photocatalytic H2 Production for Zn‐Cd‐S Solid Solution

“…7 eV) can be assigned to Cd 3d 3/2 and 3d 5/2 of Cd 2+ in Zn 0 Cd 8 . According to the previous reports, the binding energy of Cd 0 3d locates at 410.7 and 404.1 eV for 3d 3/2 and 3d 5/2 . In the high resolution Cd 3d XPS spectra, the XPS components at low bonding energy (411.5 and 404.7 eV) could be assigned to Cd 3d 3/2 and 3d 5/2 of Cd in low valence state or interstitial Cd.…”

Photoelectrocatalytic Glucose Oxidation to Promote Hydrogen Production over Periodically Ordered TiO2 Nanotube Arrays Assembled of Pd Quantum Dots

“…However, the hydrogen production rate still remained as 160.5 mmol cm À2 after the third run. The decrement in the hydrogen production rate might be related to the deactivation of the photoelectrocatalyst or was attributed to the consumption of the sacrificial reagents in the solution [13].…”

“…Therefore, great efforts have been made in the burgeoning research to develop novel techniques and methods for sustainable and economic production of hydrogen from renewable energy [9,10]. In recent years, major efforts have been paid to PC/PEC hydrogen production from water splitting, but the current efficiency of producing hydrogen directly from water splitting is still very low, which is quite far from the practical application [11][12][13][14][15]. Although the addition of sacrificial reagents (e. g. ascorbic acid (AA), Na 2 S, Na 2 SO 3 and EDTA) put into the catalytic reaction system, can enhance the efficiency to some extent, the improvement is at the cost of non-renewable sacrificial reagents [16][17][18].…”

Fabrication of platinum-deposited carbon nitride nanotubes by a one-step solvothermal treatment strategy and their efficient visible-light photocatalytic activity

“…In recent decades, the development of semiconductor photocatalytic materials and photocatalytic technique brought new opportunities and challenges for solving the energy and environmental problems [4][5][6][7]. Various photocatalytic systems have been widely studied such as hydrogen evolution, organic pollutant degradation, and carbon dioxide reduction [8][9][10].…”