Metal-doping of halide perovskite nanocrystals for energy and environmental photocatalysis: challenges and prospects

Abstract

Halide perovskite nanocrystals (HPNCs) have recently become potential photocatalytic materials due to their perfect structure and unique photoelectric properties. However, structural instability, low photogenerated charge separation efficiency, and band gap...

Visible-light-driven and selective methane conversion to oxygenates with air on a halide-perovskite-based photocatalyst under mild conditions

“…It is noted that the introduction of Mn 2+ can bring forth a further accelerated PL decay with a reduced amplitude-averaged lifetime of 11.4 ns, which is attributed to the effective trapping of photogenerated electrons in CsPbBr 3 by doped Mn 2+ ions. 39,40…”

“…The CsPbBr 3 /BiVO 4 heterojunction exhibits an apparent acceleration of PL decay in comparison with CsPbBr 3 , and the amplitude-averaged lifetime of 14.2 ns for CsPbBr 3 / BiVO 4 is signicantly shorter than that of 37.2 ns for CsPbBr 3 , indicative of rapid charge transfer at the interface of CsPbBr 3 / BiVO 4 . It is noted that the introduction of Mn 2+ can bring forth a further accelerated PL decay with a reduced amplitudeaveraged lifetime of 11.4 ns, which is attributed to the effective trapping of photogenerated electrons in CsPbBr 3 by doped Mn 2+ ions 39,40.…”

A review of boron nitride-based photocatalysts for carbon dioxide reduction

“…Furthermore, the recombination of photoexcited electron and hole pairs is problematic with traditional metallic oxide photocatalysts, adversely affecting the process yield and practical applications of these photocatalysts. 144 Recently, BNNTs and BNNSs, with unique physical and chemical properties, have gained wide attention as suitable alternatives to traditional photocatalysts. However, owing to strong covalent bonds between B and N atoms, both pure BNNTs and BNNSs are chemically inert.…”

Polymetallic Coordination Polymers for Photocatalytic Hydrogen Production

“…Metal–organic frameworks or metal coordination polymers are often used as representatives of typical three-dimensional (3D) materials due to their specific chemical and physical properties and many potential applications. − Due to their large specific surface area and graded pore structure, they are able to generate more reaction sites and provide easy access to reaction substrates. Therefore, it is usually widely used in photocatalytic hydrogen precipitation studies. − …”