4.7 Article

Functionalized black liquor-derived porous carbon as an efficient electrocatalyst for hydrogen peroxide production

Related references

Note: Only part of the references are listed.
Article Chemistry, Physical

Defect enriched N, S-codoped carbon sheets as an efficient electrocatalyst to oxygen reduction reaction

Tiantian Fu et al.

Summary: A nitrogen and sulfur codoped carbon-based catalyst (Fe-NS-AG-C) with defect-rich carbon sheets is prepared and shows outstanding performance in the oxygen reduction reaction (ORR). It exhibits higher nitrogen and sulfur contents compared to the controlled catalyst Fe-NS-C. The catalyst's dual mesopore-dominated microstructure enhances mass transfer. The Fe-NS-AG-C catalyst outperforms the benchmark Pt/C catalyst in terms of half wave potential, limiting current density, and methanol tolerance.

JOURNAL OF ALLOYS AND COMPOUNDS (2023)

Article Chemistry, Physical

Spider chrysanthemum-like Co flowers on a Ni foam for highly efficient H2O2 electroreduction in alkaline media

Limei Sun et al.

Summary: A CNF-0.25 composite electrode comprising spider chrysanthemum-like Co flowers on a Ni foam is synthesized as an efficient cathode for H2O2 electroreduction in alkaline media. It exhibits superior stability and highly desirable electrocatalytic properties. The electrode improves conductivity, provides catalytic active sites, and facilitates electrolyte transport.

JOURNAL OF ALLOYS AND COMPOUNDS (2023)

Article Chemistry, Physical

Porous carbon nitride nanotubes efficiently promote two-electron O2 reduction for photocatalytic H2O2 production

Yanhua Song et al.

Summary: Uniform porous carbon nitride nanotubes were successfully synthesized through supramolecular self-assembly, providing large specific surface area and superior electron transport performance. The nanotubes exhibited significant adsorption of O2 according to temperature programmed desorption (TPD) test and density functional theory (DFT) calculation. The rotating ring-disk electrode (RRDE) experiments showed that the porous carbon nitride nanotubes greatly improved the selectivity of 2e- oxygen reduction reaction (ORR), resulting in a higher yield of H2O2. This research offers a feasible strategy for designing photocatalytic materials with high 2e- ORR selectivity.

JOURNAL OF ALLOYS AND COMPOUNDS (2023)

Article Chemistry, Physical

Rational design of modified donor-acceptor functionalized graphitic carbon nitride structures with tailored optoelectronic and textural features for visible light-assisted H2O2 production

Hossein Fattahimoghaddam et al.

Summary: In this study, novel structures of graphitic carbon nitride (GCN) were designed by controlling the quantity of NHx(x = 1, 2) and C boolean AND N moieties through a facile NaBH4-assisted calcination of supramolecular assemblies of cyanuric acid and melamine (CM complex). These functional groups acted as donor-acceptor (D-A) motifs in the obtained GCN conjugated polymer, forming a biomimetic D-A system. The structurally modified sample (DCN) showed extended electronic delocalization and enhanced exciton dissociation, thanks to the formation of an internal electric field at the molecular scale. Furthermore, the CM complex endowed the structures with an improved surface area and unique coral-like morphology. As a result, the modified sample exhibited a remarkable photocatalytic H2O2 production rate of 351 μmol h-1 g-1, much higher than that of the pristine sample (CN).

JOURNAL OF ALLOYS AND COMPOUNDS (2023)

Article Chemistry, Physical

Tafel Slope Analysis from Inherent Rate Constants for Oxygen Reduction Reaction Over N-doped Carbon and Fe-N-doped Carbon Electrocatalysts

Yun Wu et al.

Summary: Nitrogen-doped carbon materials are a promising alternative to Pt/C catalysts for the oxygen reduction reaction in fuel cells. Analyzing Tafel slopes can provide insights into the rate-determining steps of the reaction. However, conventional methods do not work well for Fe/N/C and N/C catalysts due to their mixed reaction pathways. A new methodology is proposed to analyze Tafel slopes by converting the measured ORR currents into inherent kinetic constants. The differences in reaction mechanisms were successfully reflected in the determined parameters.

CATALYSIS SURVEYS FROM ASIA (2023)

Article Chemistry, Multidisciplinary

N-B-OH Site-Activated Graphene Quantum Dots for Boosting Electrochemical Hydrogen Peroxide Production

Mengmeng Fan et al.

Summary: Carbon materials, specifically graphene quantum dots (GQDs) with heteroatom dopants and functionalization, are studied as promising electrocatalysts for the oxygen reduction reaction (ORR) to produce H2O2. The activity of GQDs in ORR is revealed to be mainly influenced by the N-B-OH structure, which can be enhanced by designing and synthesizing NBO-GQDs with an enriched density of N-B-OH through hydrothermal reactions. NBO-GQDs exhibit high selectivity for H2O2 production and a high production rate, making them superior to other carbon- and metal-based electrocatalysts.

ADVANCED MATERIALS (2023)

Article Materials Science, Multidisciplinary

Pyrolysis-Free Mechanochemical Conversion of Small Organic Molecules into Metal-Free Heteroatom-Doped Mesoporous Carbons for Efficient Electrosynthesis of Hydrogen Peroxide

Na Yang et al.

Summary: The synthesis of heteroatom-doped porous carbons through mechanochemical methods shows promise for efficient electrochemical production of hydrogen peroxide. By converting small organic molecules into metal-free heteroatom-doped mesoporous carbons using a novel pyrolysis-free ball-milling technique, a wide variety of heteroatoms can be introduced into the resulting carbon materials, resulting in high H2O2 selectivity and production rates. These findings open up new possibilities for the development of mesoporous carbons for electrocatalytic applications.

ACS MATERIALS LETTERS (2023)

Article Chemistry, Physical

Graphene-based synthetic fabric cathodes with specific active oxygen functional groups for efficient hydrogen peroxide generation and homogeneous electro-Fenton processes

Chang Li et al.

Summary: The study focused on developing a novel cathode for electrochemical H2O2 generation, identifying active sites derived from carboxyl groups, and modifying the cathode with active species to enhance H2O2 generation activity. The results demonstrated that carboxyl-functionalized rGOSF exhibited significantly enhanced activity for H2O2 generation and efficient removal of typical organic pollutants.

CARBON (2022)

Article Chemistry, Physical

Natural bamboo-derived O-doped rocky electrocatalyst for high-efficiency electrochemical reduction of O2 to H2O2

Shaolong Wang et al.

Summary: A bamboo-derived O-doped rocky electrocatalyst is developed for efficient electroreduction of O-2 to H2O2. The electrocatalyst features three-dimensional interconnected hierarchical pores that expose abundant electroactive sites and facilitate mass transfer. Through rotating ring-disk electrode tests, surface oxygen functionalization induced by acid treatment is found to enhance H2O2 selectivity and electrocatalytic activity. At optimal catalyst loading and current density, significant H2O2 productivity and high current efficiency are achieved.

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY (2022)

Article Materials Science, Multidisciplinary

Oxygenated boron-doped carbon via polymer dehalogenation as an electrocatalyst for high-efficiency O2 reduction to H2O2

Yingna Chang et al.

Summary: This study presents a green and low-cost electrocatalyst for the synthesis of H2O2. Oxygenated boron-doped carbon materials were prepared and optimized for efficient 2e(-) oxygen reduction to H2O2. The catalyst showed high selectivity and production rate in an alkaline electrolyzer.

SCIENCE CHINA-MATERIALS (2022)

Article Chemistry, Physical

Tuning oxygen-containing groups of pyrene for high hydrogen peroxide production selectivity

Xiangyu Yan et al.

Summary: This study investigates the relationship between the structure and activity of oxygen-containing groups (OCGs) modified electrodes, and finds that asymmetrically local charge redistribution of these catalysts can promote oxygen reduction to hydrogen peroxide (ORHP) process.

APPLIED CATALYSIS B-ENVIRONMENTAL (2022)

Article Chemistry, Physical

Investigation of black liquor-derived carbon for removal of Cr(VI): Comparison with lignin-derived carbon

Yan Zhao et al.

Summary: This study explored the use of industrial black liquor to produce activated carbons with high surface area for efficient removal of Cr(VI) from wastewater, by investigating the effects of activation temperature on carbon properties and Cr(VI) removal performance.

COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS (2022)

Article Multidisciplinary Sciences

Electrochemical oxygen reduction to hydrogen peroxide at practical rates in strong acidic media

Xiao Zhang et al.

Summary: In this study, a cation-regulated shielding effect is used to promote the selectivity of electrochemical oxygen reduction to H2O2 in acidic media. The method shows high efficiency, selectivity, and stability for practical applications.

NATURE COMMUNICATIONS (2022)

Article Chemistry, Applied

Recent advances in electrocatalytic oxygen reduction for on-site hydrogen peroxide synthesis in acidic media

Jun-Yu Zhang et al.

Summary: This article summarizes recent advances in electrochemical H2O2 production in acidic media, focusing on the two-electron ORR mechanism and different categories of electrocatalysts. It also highlights the innovative development of electrochemical devices and real-time/on-site applications, providing critical perspectives on future research opportunities.

JOURNAL OF ENERGY CHEMISTRY (2022)

Article Chemistry, Applied

Soil-templated synthesis of mesoporous carbons from biomass wastes for ORR catalysis

Jong-Hyeok Park et al.

Summary: Biomass-derived porous carbons synthesized using a soil-templated approach showed excellent electrocatalytic performance for the oxygen reduction reaction (ORR), attributed to the presence of doped heteroatoms induced active sites and well-defined mesoporous carbonaceous architecture. The study provides an economical and green strategy for transforming environmentally hazardous waste biomass materials into valuable ORR electrocatalysts for energy applications.

CATALYSIS TODAY (2022)

Review Chemistry, Physical

Strategies and challenges on selective electrochemical hydrogen peroxide production: Catalyst and reaction medium design

Meng Dan et al.

Summary: This review provides an introduction to the fundamental knowledge of electrochemical H2O2-related reactions, summarizes the design strategies of catalysts and reaction media for H2O2 generation, and discusses the importance of selectivity regulation. The challenges and opportunities for selective electrochemical H2O2 production are also presented.

CHEM CATALYSIS (2022)

Review Chemistry, Physical

A review on recent developments in electrochemical hydrogen peroxide synthesis with a critical assessment of perspectives and strategies

Sengeni Anantharaj et al.

Summary: The review discusses the recent trends in electrochemical hydrogen peroxide synthesis using two-electron oxygen electrochemistry, focusing on catalyst design, performance optimization, evaluation methods, and the role of electrolyte engineering. Additionally, it provides detailed discussions on fundamental oxygen electrochemistry, alternative screening methods, and the solution chemistry of synthesized hydrogen peroxide.

ADVANCES IN COLLOID AND INTERFACE SCIENCE (2021)

Article Chemistry, Multidisciplinary

Effects of Doped N, B, P, and S Atoms on Graphene toward Oxygen Evolution Reactions

Adyasa Priyadarsini et al.

Summary: This study investigates the catalytic cycle of different doped graphene surfaces by modeling the graphene surface with various nonmetal doping atoms. The energy barriers for individual steps are explored using biased first-principles molecular dynamics simulations. The most effective for oxygen evolution catalysis is found to be S-doped graphene, while N-doped graphene seems to be the least useful.

ACS OMEGA (2021)

Article Chemistry, Multidisciplinary

Controlling Oxygen Reduction Selectivity through Steric Effects: Electrocatalytic Two-Electron and Four-Electron Oxygen Reduction with Cobalt Porphyrin Atropisomers

Bin Lv et al.

Summary: This study demonstrates the control of ORR selectivity of Co porphyrins by tuning steric effects, with αβαβ isomer catalyzing 2 e(-) ORR and αααα isomer improving 4 e(-) ORR selectivity. This finding expands the pathway for modulating molecular selectivity in catalytic performance.

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION (2021)

Article Chemistry, Multidisciplinary

Chemical Identification of Catalytically Active Sites on Oxygen-doped Carbon Nanosheet to Decipher the High Activity for Electro-synthesis Hydrogen Peroxide

Shanyong Chen et al.

Summary: A chemical titration strategy was proposed to decipher the mechanism of oxygen-doped carbon nanosheet catalyst for 2 e(-) ORR, revealing that C=O species are the main active sites for electrocatalytic activity.

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION (2021)

Article Energy & Fuels

Evaluation of pyrolysis characteristics and product distribution of black liquor using Py-GC/MS and down tube reactor: Comparison with lignin

Yan Zhao et al.

Summary: In this study, the pyrolysis behaviors, kinetics, and product distribution of black liquor solid (BLS) and precipitated lignin (PL) were investigated. Results showed that BLS exhibited a more complex pyrolysis process with lower residue and higher activation energy compared to PL. BLS also had lower content of aromatic monomers in bio-oil products. Furthermore, alkali catalysis in BLS promoted the removal of phenolic hydroxyl groups, leading to differences in product distribution between BLS and PL.
Article Chemistry, Physical

Optimized synergistic preparation of nitrogen-doped porous carbon derived from gasified carbon for supercapacitors

Yang Cao et al.

Summary: This study proposes a strategy of synergistic activation and nitrogen-doping to synthesize nitrogen-doped porous carbon materials, and optimizes the experimental conditions to prepare a product with high specific surface area and excellent capacitance performance. The balanced nitrogen proportion was found to play a key role in enhancing the material properties.

JOURNAL OF ALLOYS AND COMPOUNDS (2021)

Article Chemistry, Physical

Boron-nitrogen-doped carbon dots on multi-walled carbon nanotubes for efficient electrocatalysis of oxygen reduction reactions

Yanfei Pei et al.

Summary: A three-dimensional nanocatalyst was prepared by compounding multi-wall carbon nanotubes with carbon dots as sources of B and N, exhibiting excellent ORR performance. The catalyst shows high conductivity and a large specific surface area, promoting the development of metal-free catalysts for metal-air batteries and fuel cells.

JOURNAL OF COLLOID AND INTERFACE SCIENCE (2021)

Article Multidisciplinary Sciences

Highly active and selective oxygen reduction to H2O2 on boron-doped carbon for high production rates

Yang Xia et al.

Summary: Oxygen reduction reaction provides an environmentally-benign route for hydrogen peroxide production but lacks efficient catalysts to achieve high selectivity and activity simultaneously. Here, the authors report a boron-doped carbon catalyst which shows great promise with outstanding performance.

NATURE COMMUNICATIONS (2021)

Article Chemistry, Multidisciplinary

Designing highly active nanoporous carbon H2O2 production electrocatalysts through active site identification

June Sung Lim et al.

Summary: The study found that the carboxyl group at the edge sites of graphitic carbons is the primary active site for the 2e ORR, while the carbonyl group is a secondary active site. The nanoporous carbon catalyst with abundant active edge sites and optimized structure exhibited the highest H2O2 electrosynthesis activity and excellent long-term stability.
Article Chemistry, Multidisciplinary

Construction of a sp3/sp2 Carbon Interface in 3D N-Doped Nanocarbons for the Oxygen Reduction Reaction

Jian Gao et al.

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION (2019)

Article Chemistry, Multidisciplinary

High-Yield Electrosynthesis of Hydrogen Peroxide from Oxygen Reduction by Hierarchically Porous Carbon

Yanming Liu et al.

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION (2015)

Article Chemistry, Multidisciplinary

Catalytic two-electron reduction of dioxygen catalysed by metal-free [14]triphyrin(2.1.1)

Kentaro Mase et al.

CHEMICAL SCIENCE (2015)

Article Multidisciplinary Sciences

Insight on Tafel slopes from a microkinetic analysis of aqueous electrocatalysis for energy conversion

Tatsuya Shinagawa et al.

SCIENTIFIC REPORTS (2015)

Article Chemistry, Multidisciplinary

B-doped Carbon Coating Improves the Electrochemical Performance of Electrode Materials for Li-ion Batteries

Cong Wang et al.

ADVANCED FUNCTIONAL MATERIALS (2014)

Article Chemistry, Physical

Boron-doped graphene as active electrocatalyst for oxygen reduction reaction at a fuel-cell cathode

Gianluca Fazio et al.

JOURNAL OF CATALYSIS (2014)

Article Chemistry, Multidisciplinary

Can Boron and Nitrogen Co-doping Improve Oxygen Reduction Reaction Activity of Carbon Nanotubes?

Yu Zhao et al.

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY (2013)

Article Chemistry, Multidisciplinary

Boron-Doped Carbon Nanotubes as Metal-Free Electrocatalysts for the Oxygen Reduction Reaction

Lijun Yang et al.

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION (2011)