Bi₂WO₆ Nanosheets Decorated with Au Nanorods for Enhanced Near‐Infrared Photocatalytic Properties Based on Surface Plasmon Resonance Effects and Wide‐Range Near‐Infrared Light Harvesting

Abstract

Recently, near‐infrared light (NIR) photocatalysts, such as up‐converting materials, Bi2WO6, Cu2(OH)PO4, and carbon quantum dots, have been found and are attracting attention for environmental cleaning and energy conversion, because NIR light constitutes nearly half of the energy output. However, the photocatalytic efficiency is low for these new types of NIR photocatalysts, which has limited their widespread application owing to their insufficient NIR‐light absorption. In this work, we use gold (Au) nanorods to enhance the NIR‐light absorption of Bi2WO6, a typical visible and novel NIR‐light photocatalyst, thus the enhancement of its NIR‐light photocatalytic and photoelectrochemical properties are achieved. This can be attributed to the surface plasmon resonance (SPR) effects and wide‐range NIR light harvesting of the Au nanorods. The present work provides key guidelines for the improvement of NIR‐light photocatalysts and could also help design and prepare novel photocatalysts.

Ultrathin Two‐Dimensional Semiconductors for Photocatalysis in Energy and Environment Applications

“…Since the Frank discovered that photocatalytic reaction can oxide CN − to OCN − , photocatalytic technology in the environmental‐protection application has received wide attention of researchers at home and abroad . Profiting from the unique advantages of ultrathin 2D semiconductors, such as a large space for light absorption and photocatalytic reaction and the ultrathin thickness facilitates the rapid transfer of photogenerated carriers to the surface or interface, the 2D semiconductors show great prospect for photodegradation organics . For example, Wang and co‐workers successfully synthesized freestanding monolayer Bi 2 WO 6 with a sandwich substructure of [BiO] + ‐[WO 4 ] 2 ‐[BiO] + by cetyltrimethylammonium bromide (CTAB) assistance (Figure ).…”

Construction of Eu2O3/g‐C3N4 Redox Heterojunctions Containing Eu3+/Eu2+ Self‐Redox Centers for Boosted Visible‐Light Photocatalytic Activity

“…The photocurrent responses were further employed to understand the generation and migration of the photoinduced electron–hole pairs in the photocatalytic process. It is usually considered that a stronger photocurrent density indicates more effective separation and transfer of photoinduced charge carriers . As presented in Figure B, the photocurrent intensity of EuCN‐2 is apparently higher than that of CN.…”

MoP/Co2P Hybrid Nanostructure Anchored on Carbon Fiber Paper as an Effective Electrocatalyst for Hydrogen Evolution

“…), selenides (MoSe 2 , CoSe 2 , etc. ) and bimetallic hybrid catalysts, And among transition metal phosphides, MoP has aroused ever‐increasing interest due to its high conductivity, high intrinsic activity and excellent stability …”