A metal-free photocatalyst for highly efficient hydrogen peroxide photoproduction in real seawater
Top Cited Papers
Open Access
- 20 January 2021
- journal article
- research article
- Published by Springer Science and Business Media LLC in Nature Communications
- Vol. 12 (1), 1-10
- https://doi.org/10.1038/s41467-020-20823-8
Abstract
Artificial photosynthesis of H2O2 from H2O and O2, as a spotless method, has aroused widespread interest. Up to date, most photocatalysts still suffer from serious salt-deactivated effects with huge consumption of photogenerated charges, which severely limit their wide application. Herein, by using a phenolic condensation approach, carbon dots, organic dye molecule procyanidins and 4-methoxybenzaldehyde are composed into a metal-free photocatalyst for the photosynthetic production of H2O2 in seawater. This catalyst exhibits high photocatalytic ability to produce H2O2 with the yield of 1776 μmol g−1h−1 (λ ≥ 420 nm; 34.8 mW cm−2) in real seawater, about 4.8 times higher than the pure polymer. Combining with in-situ photoelectrochemical and transient photovoltage analysis, the active site and the catalytic mechanism of this composite catalyst in seawater are also clearly clarified. This work opens up an avenue for a highly efficient and practical, available catalyst for H2O2 photoproduction in real seawater.Keywords
This publication has 37 references indexed in Scilit:
- Evolution of oxygen vacancies in MnOx-CeO2 mixed oxides for soot oxidationApplied Catalysis B: Environmental, 2018
- Carbon vacancy-induced enhancement of the visible light-driven photocatalytic oxidation of NO over g-C 3 N 4 nanosheetsApplied Surface Science, 2018
- Cd3(C3N3S3)2 coordination polymer/graphene nanoarchitectures for enhanced photocatalytic H2O2 production under visible lightScience Bulletin, 2017
- Covalent combination of polyoxometalate and graphitic carbon nitride for light-driven hydrogen peroxide productionNano Energy, 2017
- A Pt–Co3O4–CD electrocatalyst with enhanced electrocatalytic performance and resistance to CO poisoning achieved by carbon dots and Co3O4 for direct methanol fuel cellsNanoscale, 2017
- Eco-Friendly Photochemical Production of H2O2 through O2 Reduction over Carbon Nitride Frameworks Incorporated with Multiple HeteroelementsACS Catalysis, 2017
- Au Nanoparticles Supported on BiVO4: Effective Inorganic Photocatalysts for H2O2 Production from Water and O2 under Visible LightACS Catalysis, 2016
- Seawater usable for production and consumption of hydrogen peroxide as a solar fuelNature Communications, 2016
- Metal-free efficient photocatalyst for stable visible water splitting via a two-electron pathwayScience, 2015
- Highly Selective Production of Hydrogen Peroxide on Graphitic Carbon Nitride (g-C3N4) Photocatalyst Activated by Visible LightACS Catalysis, 2014