The mechanism of water pollutant photodegradation by mixed and core–shell WO₃/TiO₂nanocomposites

Abstract

Mixed and core–shell WO3/TiO2 exhibited different photocatalytic activities due to their surface charges and charge separation behaviors.

Methane conversion and hydrogen production over TiO2/WO3/Pt heterojunction photocatalysts

“…The rapid decrease in the C 2 H 6 and H 2 evolution rate produced by the TiO 2 /WO 3 (25%)/Pt photocatalyst within the first three injections (Fig. 4b and c) may be assigned to the possible W 6+ reduction to W 5+ by receiving electrons from the conduction band (CB) of TiO 2 upon illumination, 39–41 decreasing their availability to drive the desired chemical reactions. Therefore, the electron transfer from the CB of TiO 2 to the CB of WO 3 with the subsequent reduction process of W 6+ was competitive with the coupling reactions.…”

Advancements in two-dimensional covalent organic framework nanosheets for electrocatalytic energy conversion: current and future prospects

“…However, the predominant reliance on fossil fuels, which currently constitute the largest proportion of energy sources, presents not only the challenge of limited energy resources but also detrimental consequences caused by significant carbon dioxide (CO 2 ) emission during combustion, thus exacerbating global warming [2,3] . Consequently, sustainable and environmentally friendly alternative energy conversion methods are urgently required [4][5][6] . Considering the constraints posed by the limited conditions and low energy efficiency of renewable energy generation, the integration of catalysts has emerged as a promising solution to address these challenges and foster a sustainable energy future [7] .…”

Effect of CdS on microstructure and performance of ZnO composite photocatalyst

“…Since the light absorption ability of semiconductor photocatalysts is related to their bandgap widths, some semiconductor catalysts with narrower bandgap widths, such as WO 3 , 12,13 g‐C 3 N 4 , 14,15 and CuO, 16,17 have been widely studied to make full use of solar energy. These narrow‐bandgap semiconductors are frequently utilized as photosensitizers for surface modification of wide‐bandgap semiconductors, creating binary nanocomposite structures with visible light activity.…”