4.7 Article

Highly selective oxygen reduction to H2O2 on ?-d conjugated coordination polymers: The effect of coordination atoms

Related references

Note: Only part of the references are listed.
Article Engineering, Environmental

Tailoring oxygenated groups of monolithic cobalt-nitrogen-carbon frameworks for highly efficient hydrogen peroxide production in acidic media

Wenxian Liu et al.

Summary: The study introduces a new method for efficient production of H2O2 by tailoring the surface structure and coordination environment of cobalt-carbon hybrids to achieve high 2e(-) selectivity. The CoNCF electrodes synthesized exhibit excellent H2O2 selectivity in acidic media, showing potential practical applications.

CHEMICAL ENGINEERING JOURNAL (2022)

Article Chemistry, Physical

Preparation of Chemically Structure-Controlled BN-Doped Carbons for the Molecular Understanding of Their Surface Active Sites for Oxygen Reduction Reaction

Takafumi Ishii et al.

Summary: This study prepared chemically structure-controlled BN-doped carbons and found that the B-N-C moieties in these carbons serve as the active sites for the oxygen reduction reaction (ORR), resulting in higher ORR activity compared to single-atom-doped carbons. The enhanced ORR activity can be attributed to the electrochemical H2O2 reduction capability of the BN-doped carbon.

ACS CATALYSIS (2022)

Article Engineering, Environmental

Effective anodic sulfide removal catalyzed by single nickel atoms on nitrogen-doped graphene with stainless steel substrate

Xin Zhang et al.

Summary: The study utilized A-Ni-NG catalyst for efficient sulfide removal, achieving a high removal efficiency of 85.02% on the SS/A-Ni-NG anode. The main products of sulfide oxidation were thiosulfate and elemental sulfur. SS/A-Ni-NG showed superior catalytic activity for sulfide removal.

CHEMICAL ENGINEERING JOURNAL (2022)

Article Chemistry, Physical

Modulating coordination environment of Fe single atoms for high-efficiency all-pH-tolerated H2O2 electrochemical production

Yuhan Wu et al.

Summary: This study presents the precise synthesis of Fe single-atom catalysts with engineered coordination chemistry for enhanced H2O2 production, particularly achieving high selectivity of 95% in alkaline conditions. The designed gas-diffusion electrode allows for a favorable H2O2 yield at a high current density for 50 hours, showcasing the potential for electrochemical production of H2O2 for environmental remediation.

APPLIED CATALYSIS B-ENVIRONMENTAL (2022)

Article Chemistry, Physical

Pyrolyzed polydopamine-modified carbon black for selective and durable electrocatalytic oxygen reduction to hydrogen peroxide in acidic medium

Dan Wang et al.

Summary: In this study, a slightly nitrogen-doped carbon catalyst was synthesized using a simple method. The catalyst showed low overpotential and high selectivity in producing H2O2 in an acidic electrolyte, and stable H2O2 production was achieved. The relationship between the surface content of C-O/C-N and C=O species and the H2O2 partial current suggested that C atoms act as active sites for 2e-ORR to H2O2. The catalyst, with its inexpensive starting materials and excellent catalytic performance, may contribute to the development of an affordable, safe, and direct electrochemical process for O2-to-H2O2 conversion.

APPLIED CATALYSIS B-ENVIRONMENTAL (2022)

Article Engineering, Environmental

Surface functionalization of polyaniline and excellent electrocatalytic performance for oxygen reduction to produce hydrogen peroxide

Jun Hu et al.

Summary: In this study, a CNT@PANI-NO electrocatalyst was developed to improve the selectivity and current density of H2O2 production by modifying the functional group of polyaniline (PANI) to -NO. This provides a new idea for the application of polymers in electrocatalysis and the development of high-performance catalysts.

CHEMICAL ENGINEERING JOURNAL (2022)

Article Engineering, Environmental

Highly dispersed Co atoms anchored in porous nitrogen-doped carbon for acidic H2O2 electrosynthesis

Jingjing Zhang et al.

Summary: This study demonstrates the efficient performance of highly dispersed cobalt atoms anchored in porous N-doped carbon for H2O2 electrosynthesis. The p-Co-N-C material shows H2O2 selectivity over 90% and a production rate of 2460.8 mg L^-1h^-1, along with a malachite green degradation rate of 90% within 8 min. This is attributed to the highly dispersed Co-N-x species and hierarchical porous architecture.

CHEMICAL ENGINEERING JOURNAL (2022)

Article Chemistry, Multidisciplinary

Boosting Oxygen Reduction for High-Efficiency H2O2 Electrosynthesis on Oxygen-Coordinated Co-N-C Catalysts

Hangjia Shen et al.

Summary: In this study, a novel single-atom electrocatalyst (Co/NC) with a specifically penta-coordinated Co-N-C configuration is reported. The unique atomic structure improves the selectivity and turnover frequency of the catalyst for H2O2 electrosynthesis, outperforming the state-of-the-art carbon-based catalysts.

SMALL (2022)

Article Multidisciplinary Sciences

Insights into the activity of single-atom Fe-N-C catalysts for oxygen reduction reaction

Kang Liu et al.

Summary: This study provides a model to understand the catalytic activity of single-atom M-N-C catalysts in the oxygen reduction reaction. The authors demonstrate the regulation of divacancy defects on Fe-N-4 site ORR activity and identify the origin of Fe-N-4 ORR activity through the hybridization between Fe 3dz(2), 3dyz (3dxz) and O-2 pi* orbitals.

NATURE COMMUNICATIONS (2022)

Article Chemistry, Physical

Highly Selective Oxygen Reduction to Hydrogen Peroxide on aCarbon-Supported Single-Atom Pd Electrocatalyst

Nan Wang et al.

Summary: This study presents a high-performance nitrogen-coordinated single-atom Pd electrocatalyst with excellent selectivity and activity for oxygen reduction reaction, leading to high selectivity in H2O2 production.

ACS CATALYSIS (2022)

Article Chemistry, Applied

Non-precious metal electrocatalysts for two-electron oxygen electrochemistry: Mechanisms, progress, and outlooks

Yuhan Wu et al.

Summary: This article provides an overview of the production and application of hydrogen peroxide. It introduces the advantages of electrochemical reduction in H2O2 production compared to traditional methods and emphasizes the importance of preparing highly selective catalysts and constructing electrolysis devices in the electrosynthesis process. Furthermore, it discusses the key factors of electrode structure and device design, as well as the potential co-production combination with energy systems.

JOURNAL OF ENERGY CHEMISTRY (2022)

Article Chemistry, Physical

Ni single atoms anchored on N-doped carbon nanosheets as bifunctional electrocatalysts for Urea-assisted rechargeable Zn-air batteries

Hao Jiang et al.

Summary: In this study, a bifunctional electrocatalyst composed of individually dispersed Ni single atoms on N-doped carbon nanosheets (Ni SAs-NC) was synthesized and demonstrated to exhibit outstanding performance for both oxygen reduction reaction (ORR) and urea oxidation reaction (UOR). By coupling ORR with UOR of low thermodynamic potential, a urea-assisted rechargeable Zn-air battery (ZAB) with significantly decreased charging voltage and high urea elimination rate was achieved. The high bifunctional electrocatalytic activities of Ni SAs-NC resulted in a dramatically increased energy conversion efficiency of 71.8%, improving conventional ZABs by 17.1%. This successful implementation of Ni SAs-based urea-assisted ZABs with improved energy conversion efficiency may advance practical applications of ZAB technology.

APPLIED CATALYSIS B-ENVIRONMENTAL (2022)

Article Chemistry, Multidisciplinary

Identification of the Highly Active Co-N4 Coordination Motif for Selective Oxygen Reduction to Hydrogen Peroxide

Shanyong Chen et al.

Summary: The research reveals that pyrrole-type CoN4 and pyridine-type CoN4 are responsible for 2e- ORR and 4e- ORR reactions, respectively. Pyrrole-type CoN4 catalyst exhibits excellent H2O2 selectivity and yield in acid media. This study is significant for understanding the structure-function relationship of Co-N4 single-atom catalysts and improving H2O2 production.

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY (2022)

Article Chemistry, Physical

In Situ Dynamic Construction of a Copper Tin Sulfide Catalyst for High-Performance Electrochemical CO2 Conversion to Formate

Ke Li et al.

Summary: This study reveals the dynamic reduction process and phase transformation of a copper tin sulfide catalyst during electrochemical CO2 reduction, and finds that the reconstructed catalyst has high efficiency and selectivity in converting CO2 to formate.

ACS CATALYSIS (2022)

Article Chemistry, Physical

Atomic-Level Modulation-Induced Electron Redistribution in Co Coordination Polymers Elucidates the Oxygen Reduction Mechanism

Liu Lin et al.

Summary: By modulating the charge density around the cobalt centers, three cobalt coordination polymer catalysts were designed and synthesized to optimize the performance of the oxygen reduction reaction (ORR). Experimental results show that Co-DABDT@CNTs with Co-N2S2 exhibits a high half-wave potential and outperforms other catalysts, including Pt/C. Systematic characterization and theoretical simulations reveal the mechanism behind this optimization.

ACS CATALYSIS (2022)

Article Nanoscience & Nanotechnology

Ni-O4 as Active Sites for Efficient Oxygen Evolution Reaction with Electronic Metal-Support Interactions

Zhang-Hong Zhou et al.

Summary: This study reports a method to synthesize Ni-O-G catalyst using molten salts as templates, and finds that Ni-O4 coordination can enhance OER kinetics and improve the activity of the catalyst. This provides a new strategy for structural modulation of Ni single atom catalysts.

ACS APPLIED MATERIALS & INTERFACES (2022)

Article Chemistry, Physical

Fully π-conjugated dense topological salphen organic frameworks with atomic dispersed tetradentate cobalt sites for high-efficiency electrocatalytic oxygen reduction

Tianping Wang et al.

Summary: This study demonstrates that fully pi-conjugated dense topological salophen organic frameworks with atomic dispersed tetradentate cobalt sites grown in situ on Kejtenblack are efficient and durable electrocatalysts for oxygen reduction. The catalysts show superior activity compared to benchmark Pt/C catalysts and exhibit excellent performance in zinc-air batteries.

APPLIED CATALYSIS B-ENVIRONMENTAL (2022)

Review Engineering, Environmental

Microenvironment engineering of single-atom catalysts for persulfate-based advanced oxidation processes

Bin Han et al.

Summary: This review summarizes the progress in microenvironment engineering of single-atom catalysts (SACs) for Persulfate-based advanced oxidation processes (PS AOPs). The strategies for regulating and characterizing the microenvironment are illustrated, and the relationship between the microenvironment of SACs and their PS activation performance is scrutinized. Future opportunities and ongoing challenges are critically discussed.

CHEMICAL ENGINEERING JOURNAL (2022)

Review Chemistry, Multidisciplinary

Rechargeable Batteries for Grid Scale Energy Storage

Zhengxin Zhu et al.

Summary: This article discusses battery research in the field of energy storage, focusing on the importance of practical application requirements and battery performance matching. By systematically analyzing key parameters, standards and measures for GSES are proposed, and some promising battery technologies for practical applications are explored.

CHEMICAL REVIEWS (2022)

Article Chemistry, Multidisciplinary

Surface-Oxygen-Rich Bi@C Nanoparticles for High-Efficiency Electroreduction of CO2 to Formate

Shuang Liu et al.

Summary: This study presents a green synthesis of bismuth nanoparticles catalyst for efficient formate production in CO2RR. The catalyst shows a high formate Faradaic efficiency of over 91% over a wide potential range and remains stable during the process, facilitating the formation of intermediates.

NANO LETTERS (2022)

Article Chemistry, Multidisciplinary

Atomically dispersed single Ni site catalysts for high-efficiency CO2 electroreduction at industrial-level current densities

Yi Li et al.

Summary: An effective single Ni site catalyst for CO2 electroreduction to CO was designed by studying the structural evolution and other critical factors. The N coordination, metal-N bond length, and thermal wrinkling of carbon planes significantly influence the activity and selectivity of the catalyst. The influence of morphological factors such as carbon particle size and Ni loading on catalyst structure and performance was also studied. The catalyst showed impressive performance in an industrial flow-cell electrolyzer.

ENERGY & ENVIRONMENTAL SCIENCE (2022)

Article Engineering, Environmental

Activated Ni-based metal-organic framework catalyst with well-defined structure for electrosynthesis of hydrogen peroxide

Huixiang Wu et al.

Summary: A Ni-based MOF catalyst derived from modified ZIF-8 was developed for the synthesis of H2O2. The catalyst exhibited well-defined active sites and highly ordered mesoporous structure, and its catalytic performance was further enhanced by calcination treatment. The optimized catalyst showed excellent selectivity and high production rate in alkaline medium.

CHEMICAL ENGINEERING JOURNAL (2022)

Review Chemistry, Multidisciplinary

Intrinsic Electrocatalytic Activity Regulation of M-N-C Single-Atom Catalysts for the Oxygen Reduction Reaction

Chang-Xin Zhao et al.

Summary: This Review summarizes the regulation strategies for promoting the intrinsic electrocatalytic ORR activity of M-N-C SACs by modulation of the center metal atoms, the coordinated atoms, the environmental atoms, and the guest groups. The study includes both theoretical calculations and experimental investigations to provide a comprehensive understanding of the structure-performance relationship. Proposed future directions involve developing advanced M-N-C SACs for electrocatalytic ORR and other analogous reactions.

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION (2021)

Article Chemistry, Physical

3D N-doped ordered mesoporous carbon supported single-atom Fe-N-C catalysts with superior performance for oxygen reduction reaction and zinc-air battery

Junxing Han et al.

Summary: The novel single-atom electrocatalyst Fe-N-C/N-OMC exhibits high ORR activity, attributed to the unique structure of Fe-N-C sites and the advantages of the 3D mesoporous carbon structure.

APPLIED CATALYSIS B-ENVIRONMENTAL (2021)

Article Chemistry, Multidisciplinary

1D Coordination π-d Conjugated Polymers with Distinct Structures Defined by the Choice of the Transition Metal: Towards a New Class of Antiaromatic Macrocycles

Vijai M. Santhini et al.

Summary: Recently, there has been significant interest in pi-d conjugated coordination polymers due to their unique material properties, although synthesizing long and defect-free polymers remains challenging. A novel on-surface synthesis method using quinoidal ligands under ultra-high vacuum conditions has been introduced, enabling the formation of flexible coordination polymers with lengths up to hundreds of nanometers. This method also allows for the incorporation of different transition-metal atoms with four- or two-fold coordination, revealing the formation of wires constituted by independent 12-membered antiaromatic macrocycles linked together through two C-C single bonds in the two-fold coordination mode.

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION (2021)

Article Nanoscience & Nanotechnology

Conductive One-Dimensional Coordination Polymers with Tunable Selectivity for the Oxygen Reduction Reaction

Qian Zhao et al.

Summary: This study presented efficient ORR electrocatalysts containing M-S2N2 sites based on one-dimensional coordination polymers. Cobalt-based CPs exhibited remarkable ORR activity in alkaline media, while nickel-based CPs favored a 2e(-) ORR process.

ACS APPLIED MATERIALS & INTERFACES (2021)

Article Chemistry, Multidisciplinary

Metal-Organic-Framework-Supported Molecular Electrocatalysis for the Oxygen Reduction Reaction

Zuozhong Liang et al.

Summary: Synthesizing metal-organic framework (MOF)-supported Co porphyrins for the oxygen reduction reaction (ORR) leads to improved activity and selectivity. The grafted Co porphyrins show boosted ORR activity and improved selectivity for the 4e ORR, demonstrating potential for application as air electrode catalysts in Zn-air batteries.

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION (2021)

Article Chemistry, Multidisciplinary

Atomic-Level Modulation of Electronic Density at Cobalt Single-Atom Sites Derived from Metal-Organic Frameworks: Enhanced Oxygen Reduction Performance

Yuanjun Chen et al.

Summary: This study demonstrates the correlation between atomic configuration induced electronic density of single-atom Co active sites and oxygen reduction reaction (ORR) performance. The designed and synthesized Co-1-N3PS/HC catalyst shows outstanding ORR activity in alkaline and acidic media, surpassing Pt/C and most non-precious ORR electrocatalysts. Insights from this work promote rational design of efficient catalysts.

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION (2021)

Article Chemistry, Physical

A reduction of settlement probability of Chlorella vulgaris on photo-chemically active ceramics with hierarchical nano-structures

Ling Mu et al.

Summary: This study focused on the Chlorella vulgaris settlement on titanium dioxide surfaces with different micro-structures, revealing that bulk metallic glass structures made by Ostwald ripening showed the highest catalytic and self-cleaning effects, and the settlement probability of Chlorella vulgaris depended on the Wenzel roughness. Semi-field tests confirmed the comparable antibiofouling performance of these surfaces with existing polymeric or sharkskin-like structures over one month.

COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS (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)

Review Engineering, Environmental

Selective H2O2 electrosynthesis by O-doped and transition-metal-O-doped carbon cathodes via O2 electroreduction: A critical review

Wei Zhou et al.

Summary: This critical review paper examines the advances in hydrogen peroxide electrosynthesis via the oxygen reduction reaction, focusing on the catalytic properties of O-doped carbon materials. The study includes descriptions of active sites, O-doping effects, experimental preparation methods, and the contribution of oxygen-containing functional groups towards the ORR. The paper also reviews the new developments in co-doping of O and transition metals and highlights the future directions in this field.

CHEMICAL ENGINEERING JOURNAL (2021)

Article Chemistry, Multidisciplinary

Regulating Electrocatalytic Oxygen Reduction Activity of a Metal Coordination Polymer via d-π Conjugation

Youxuan Ni et al.

Summary: Non-noble transition metal complexes are efficient electrocatalysts for oxygen reduction reaction (ORR) and a d-delta conjugation strategy can be used for tuning their ORR activity. Co-TABQ exhibits excellent performance in ORR and can potentially replace benchmark Pt/C in oxygen electro-catalysis.

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION (2021)

Article Chemistry, Physical

Understanding the inter-site distance effect in single-atom catalysts for oxygen electroreduction

Zhaoyu Jin et al.

Summary: Regulating the site density of single-atom catalysts can significantly improve electrocatalysis performance, such as the oxygen reduction reaction. Strong interactions between adjacent Fe-N-4 moieties can enhance intrinsic ORR activity, with a marked improvement continuing until neighbouring Fe atoms approach as close as about 0.7 nm. Identifying the fundamental mechanism of the inter-site distance effect in Fe-N-4 catalysts may maximize the potential of densely populated SACs.

NATURE CATALYSIS (2021)

Article Chemistry, Multidisciplinary

Heterochelation boosts sodium storage in pi-d conjugated coordination polymers

Yanchao Wu et al.

Summary: In recent years, the emerging pi-d conjugated coordination polymers (CCPs) have attracted increasing attention for various applications. The study proposed two Ni-based CCPs with N and S as co-chelating atoms, which exhibited high electrical conductivity and stability, resulting in high capacity, excellent cyclability, and high rate capability in sodium-ion batteries (SIBs). These results enrich the CCPs field and stimulate further investigations of CCPs with heterochelating atoms for various applications.

ENERGY & ENVIRONMENTAL SCIENCE (2021)

Article Chemistry, Multidisciplinary

In Silico Design of Covalent Organic Framework-Based Electrocatalysts

Wei Zhou et al.

Summary: Using density functional theory and machine learning, a highly efficient COF catalyst was designed and the best structure with superior OER performance was predicted through machine learning. The synthesized Ni-COF showed comparable electrocatalytic activity with the best reported COF-based OER catalysts.

JACS AU (2021)

Article Chemistry, Multidisciplinary

Approaching a high-rate and sustainable production of hydrogen peroxide: oxygen reduction on Co-N-C single-atom electrocatalysts in simulated seawater

Qinglan Zhao et al.

Summary: The study demonstrates the efficient production of H2O2 using cobalt single-atom catalysts in simulated seawater, showing long-term stability and high chloride-endurability. It reveals that the Co-N-5 structure is the main active site for H2O2 formation, offering a promising pathway for large-scale electrocatalytic oxygen reduction in simulated seawater towards energy sustainability.

ENERGY & ENVIRONMENTAL SCIENCE (2021)

Article Chemistry, Physical

Atomically dispersed antimony on carbon nitride for the artificial photosynthesis of hydrogen peroxide

Zhenyuan Teng et al.

Summary: Artificial photosynthesis is a promising strategy for producing environmentally friendly oxidants and clean fuels. A carbon nitride-supported antimony single atom photocatalyst has been developed for efficient synthesis of H2O2 under visible light irradiation.

NATURE CATALYSIS (2021)

Article Green & Sustainable Science & Technology

Organic wastewater treatment by a single-atom catalyst and electrolytically produced H2O2

Jinwei Xu et al.

Summary: The study demonstrates a method of catalytically activating H2O2 to generate hydroxyl radicals using Cu single atoms, which operates stably at pH 7.0 without the need for external energy input, providing a new approach for wastewater treatment.

NATURE SUSTAINABILITY (2021)

Article Chemistry, Physical

Dual effect of the coordination field and sulphuric acid on the properties of a single-atom catalyst in the electrosynthesis of H2O2

Jinkong Pan et al.

Summary: The study proposes a new strategy for creating new 2e(-) ORR catalysts by introducing electron-deficient B atoms and electron-rich N atoms on a graphene substrate to regulate the coordination field of metal ions. Through density functional theory calculations, NiN2B2-h was identified as having a low overpotential for 2e(-) ORR. Additionally, a new reaction mechanism for H2O2 synthesis in an H2SO4 environment was revealed, involving proton-transfer between activated O-2 and HSO4-.

PHYSICAL CHEMISTRY CHEMICAL PHYSICS (2021)

Article Chemistry, Multidisciplinary

Coordination Tunes Selectivity: Two-Electron Oxygen Reduction on High-Loading Molybdenum Single-Atom Catalysts

Cheng Tang et al.

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION (2020)

Article Chemistry, Physical

Recent Advances in Electrochemical Oxygen Reduction to H2O2: Catalyst and Cell Design

Euiyeon Jung et al.

ACS ENERGY LETTERS (2020)

Article Chemistry, Multidisciplinary

Catalyst Design for Electrochemical Oxygen Reduction toward Hydrogen Peroxide

Kun Jiang et al.

ADVANCED FUNCTIONAL MATERIALS (2020)

Review Chemistry, Multidisciplinary

Atomic site electrocatalysts for water splitting, oxygen reduction and selective oxidation

Di Zhao et al.

CHEMICAL SOCIETY REVIEWS (2020)

Article Multidisciplinary Sciences

A universal ligand mediated method for large scale synthesis of transition metal single atom catalysts

Hongzhou Yang et al.

NATURE COMMUNICATIONS (2019)

Article Multidisciplinary Sciences

Highly selective oxygen reduction to hydrogen peroxide on transition metal single atom coordination

Kun Jiang et al.

NATURE COMMUNICATIONS (2019)

Article Chemistry, Multidisciplinary

Tuning the Coordination Environment in Single-Atom Catalysts to Achieve Highly Efficient Oxygen Reduction Reactions

Jinqiang Zhang et al.

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY (2019)

Article Energy & Fuels

Atomically dispersed Ni(i) as the active site for electrochemical CO2 reduction

Hong Bin Yang et al.

NATURE ENERGY (2018)

Article Chemistry, Multidisciplinary

Nickel Metal-Organic Framework Monolayers for Photoreduction of Diluted CO2: Metal-Node-Dependent Activity and Selectivity

Bin Han et al.

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION (2018)