The carbon spheres synthesized by pyrolysis of resorcinol-formaldehyde (RF) semiconducting resins exhibit enhanced activity for electrocatalytic oxygen reduction. The spheres consist of narrow reticulated carbon layers, which are derived from the donor-acceptor π-stacking interaction of the resins, and show high electron conductivity.
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Resorcinol-formaldehyde semiconducting resins as precursors for carbon spheres toward electrocatalytic oxygen reduction.
Chem Commun (Camb)
September 2024
Research Center for Solar Energy Chemistry and Division of Chemical Engineering, Graduate School of Engineering Science, Osaka University, Toyonaka 560-8531, Japan.
The carbon spheres synthesized by pyrolysis of resorcinol-formaldehyde (RF) semiconducting resins exhibit enhanced activity for electrocatalytic oxygen reduction. The spheres consist of narrow reticulated carbon layers, which are derived from the donor-acceptor π-stacking interaction of the resins, and show high electron conductivity.
View Article and Find Full Text PDFNafion-Integrated Resorcinol-Formaldehyde Resin Photocatalysts for Solar Hydrogen Peroxide Production.
JACS Au
August 2023
Research Center for Solar Energy Chemistry and Division of Chemical Engineering, Graduate School of Engineering Science, Osaka University, Toyonaka 560-8531, Japan.
Photocatalytic generation of HO from water and O is a promising strategy for liquid solar-fuel production. Previously reported powder photocatalysts promote a subsequent oxidative/reductive decomposition of the HO generated, thereby producing low-HO-content solutions. This study reports that Nafion (Nf)-integrated resorcinol-formaldehyde (RF) semiconducting resin powders (RF@Nf), synthesized by polycondensation of resorcinol and formaldehyde with an Nf dispersion solution under high-temperature hydrothermal conditions, exhibit high photocatalytic activities and produce high-HO-content solutions.
View Article and Find Full Text PDFSpatial Specific Janus S-Scheme Photocatalyst with Enhanced H O Production Performance.
Small
July 2023
School of Chemistry and Molecular Engineering, East China Normal University, Shanghai, 200241, P. R. China.
Photocatalytic oxygen reduction reaction (ORR) for H O 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, TiO nanocrystals are grown inside the inner wall of resorcinol-formaldehyde (RF) resin hollow nanocakes with a reverse bumpy ball morphology (TiO @RF).
View Article and Find Full Text PDFCore-Shell Covalently Linked Graphitic Carbon Nitride-Melamine-Resorcinol-Formaldehyde Microsphere Polymers for Efficient Photocatalytic CO Reduction to Methanol.
J Am Chem Soc
June 2022
Department of Chemical and Biological Engineering, Northwestern University, Evanston, Illinois 60208, United States.
Photocatalytic reduction of CO with light and HO to form CHOH is a promising route to mitigate carbon emissions and climate changes. Although semiconducting metal oxides are potential photocatalysts for this reaction, low photon efficiency and leaching of environmentally unfriendly toxic metals limit their applicability. Here, we report metal-free, core-shell photocatalysts consisting of graphitic carbon nitride (g-CN, CN) covalently linked to melamine-resorcinol-formaldehyde (MRF) microsphere polymers for this reaction.
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