The enhanced photocatalytic properties of Bi/BiOCl composites for H₂O₂ production

Abstract

The development of high-efficiency economic photocatalyst for the production of hydrogen peroxide (H2O2) is of great significance for solar-to-fuel conversion. Bismuth oxychloride (BiOCl) shows giant potential for photocatalytic H2O2 production,...

Photocatalytic Enhancement Strategy with the Introduction of Metallic Bi: A Review on Bi/Semiconductor Photocatalysts

“…The photocatalytic performance of Pt-Bi/KTa 0.5 Nb 0.5 O 3 composites was evaluated through photocatalytic N 2 -to-NH 3 conversion, by Chen et al, [197] significantly enhanced the photocatalytic performance of KTa 0.5 Nb 0.5 O 3 by using Pt-Bi alloy modification, and Wang et al [198] obtained Bi/InVO 4 photocatalysts by depositing metal Bi on indium vanadate nanosheets via a two-step hydrothermal method, which also presented an excellent photocatalytic performance in N 2 fixation. To enhance the photocatalytic generation of H 2 O 2 , Liu et al [199] synthesized Bi/BiOCl composites by in-situ chemical reduction to facilitate the separation and transport of spatial charges, Bisht et al [200] synthesized a Z-type CuO-Bi-BiOBr photocatalyst using a straightforward solution-based method, achieving high selectivity (> 99 %) and conversion (> 99 %) for the oxidation of alcohols to aldehydes or ketones. In addition, photocatalytic sterilization was investigated by Zhou et al [79] using Bi/(BiO) 2 CO 3 heterojunctions, which showed superior photocatalytic activity compared to (BiO) 2 CO 3 .…”

“…obtained Bi/InVO 4 photocatalysts by depositing metal Bi on indium vanadate nanosheets via a two‐step hydrothermal method, which also presented an excellent photocatalytic performance in N 2 fixation. To enhance the photocatalytic generation of H 2 O 2 , Liu et al [199] . synthesized Bi/BiOCl composites by in‐situ chemical reduction to facilitate the separation and transport of spatial charges, Bisht et al [200] .…”

Synergy of oxygen vacancies and Bi nanoparticles on BiOBr nanosheets for enhanced photocatalytic H2O2 production

“…Our recent work also confirmed that Bi nanoparticle modified BiOCl boosts the spatial charge separation and transportation to enhance the photocatalytic performance for H 2 O 2 production. 37 However, to date, there has been no report about the combination of a Bi cocatalyst and oxygen vacancies to improve the photocatalytic performance of bismuth oxyhalides for photocatalytic H 2 O 2 production.…”

Enhanced photocatalytic H2O2 production using BiOCl nanosheets decorated with Pd nanoparticles and polyethyleneimine

“…The enhancement of photocatalytic activity by noble metal loading can be mainly attributed to the following factors: (1) metal nanoparticles act as electron acceptors in photoexcited carrier transfer processes, such that the formation of Schottky barriers effectively facilitates the separation of electron-hole pairs, 26 (2) the localized surface plasmon resonance (LSPR) phenomenon of the loaded metal particles enhances the absorption of visible light in wide bandgap semiconductors (BiOCl, TiO 2 , etc. ), 27 and (3) the loading of metals can modify the surface properties of semiconductor catalysts. 28 In this work, BiOCl loaded with Pd (0.5 wt%) was successfully designed using a polyethyleneimine (PEI)-assisted method (Pd/PEI/BOC) for photocatalytic H 2 O 2 production.…”