Affiliation:
1. School of Chemistry and Molecular Engineering East China Normal University Shanghai 200241 P. R. China
2. Australian Institute for Bioengineering and Nanotechnology The University of Queensland Brisbane QLD 4072 Australia
3. National Engineering Research Center of Chemical Fertilizer Catalyst Fuzhou University Fuzhou 350002 P. R. China
Abstract
AbstractPhotocatalytic oxygen reduction reaction (ORR) for H2O2 production in the absence of sacrificing agents is a green approach and of great significance, where the design of photocatalysts with high performance is the central task. Herein, a spatial specific S‐scheme heterojunction design by introducing a novel semiconducting pair with a S‐scheme mechanism in a purpose‐designed Janus core–shell‐structured hollow morphology is reported. In this design, TiO2 nanocrystals are grown inside the inner wall of resorcinol‐formaldehyde (RF) resin hollow nanocakes with a reverse bumpy ball morphology (TiO2@RF). The S‐scheme heterojunction preserves the high redox ability of the TiO2 and RF pair, the spatial specific Janus design enhances the charge separation, promotes active site exposure, and reduces the H2O2 decomposition to a large extent. The TiO2@RF photocatalyst shows a high H2O2 yield of 66.6 mM g−1 h−1 and solar‐to‐chemical conversion efficiency of 1.11%, superior to another Janus structure (RF@TiO2) with the same heterojunction but a reversed Janus spatial arrangement, and most reported photocatalysts under similar reaction conditions. The work has paved the way toward the design of next‐generation photocatalysts for green synthesis of H2O2 production.
Funder
National Natural Science Foundation of China
Fundamental Research Funds for the Central Universities
Subject
Biomaterials,Biotechnology,General Materials Science,General Chemistry
Cited by
32 articles.
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