Multi-stepwise charge transfer via MOF@MOF/TiO₂ dual-heterojunction photocatalysts towards hydrogen evolution

Abstract

Rational manipulation of the photogenerated charge transfer inside the photocatalyst is key to enhancing the photocatalytic performance. Herein, inspired by the charge transport chain in natural photosynthesis, a novel multi-stepwise...

Multi-stepwise electron transfer via MOF-based nanocomposites for photocatalytic ammonia synthesis

“…In the as-prepared nanocomposites, the multi-stepwise electron transfer pathway was constructed, which encouraged the electron to disperse in various energy bands, thus achieving superior electron transfer efficiency. 8 Compared with pristine MOF photocatalysts, the MOF-based nanocomposite photocatalyst possesses an extra prolonged electron transfer pathway to assemble the electrons in the CB of MOFs from its VB and another semiconductor through PDA, which can increase the electronic behavior. Meanwhile, the construction of the multi-stepwise electron transfer can reasonably coordinate and optimize the whole electron transfer process, acting as an electron buffer to reduce the electron quenching probability.…”

“…7 More recently, inspired by the charge transport chain in natural photosynthesis, we proposed a multi-stepwise charge transfer strategy that could realize the extension of the charge transfer pathway and thus boost the H 2 evolution rate. 8 Therefore, it may be also a valid strategy to construct the MOF-based composite with a multi-stepwise electron transfer pathway to promote the photocatalytic NH 3 evolution rate.…”

Metal–organic framework (MOF)-5/CuO@ZnIn2S4core–shell Z-scheme tandem heterojunctions for improved charge separation and enhanced photocatalytic performance

“…1,2 Photocatalysis provides an ideal solution to solve energy and environmental pollution problems due to its green, mild, and easy-to-use advantages. 3,4 Photocatalysts such as metal sulfides, 5–7 metal oxides, 8,9 covalent organic frameworks (COFs), 10,11 metal–organic frameworks (MOFs) 12,13 have been exploited for such applications as photocatalytic pollutant degradation, 14,15 photocatalytic hydrogen production, 16–18 etc. At present, poor catalyst stability and low photocatalytic performance due to the slow carrier separation of semiconductor catalysts severely limit the practical applications.…”

Metallic Tungsten Carbide Coupled with Liquid-Phase Dye Photosensitizer for Efficient Photocatalytic Hydrogen Production

“…Nonetheless, establishing intimate interfacial contact between the constituents is daunting, and most of the time, is empirical in nature. Incommensurable time and monetary costs would be needed for the developed a real feasible, and yet consistent photocatalytic coupled composite for commercial use [35][36][37][38] .…”