Nanoengineering of Porous 2D Structures with Tunable Fluid Transport Behavior for Exceptional H2O2 Electrosynthesis DOI
Qiang Tian, Lingyan Jing,

Yunchao Yin

et al.

Nano Letters, Journal Year: 2024, Volume and Issue: 24(5), P. 1650 - 1659

Published: Jan. 24, 2024

Precision nanoengineering of porous two-dimensional structures has emerged as a promising avenue for finely tuning catalytic reactions. However, understanding the pore-structure-dependent performance remains challenging, given lack comprehensive guidelines, appropriate material models, and precise synthesis strategies. Here, we propose optimization carbon materials through utilization mesopores with 5–10 nm diameter to facilitate fluid acceleration, guided by finite element simulations. As proof concept, optimized mesoporous nanosheet sample exhibited exceptional electrocatalytic performance, demonstrating high selectivity (>95%) notable diffusion-limiting disk current density −3.1 mA cm–2 H2O2 production. Impressively, electrolysis process in flow cell achieved production rate 14.39 mol gcatalyst–1 h–1 yield medical-grade disinfectant-worthy solution. Our pore engineering research focuses on modulating oxygen reduction reaction activity affecting local transport behavior, providing insights into mesoscale mechanism.

Language: Английский

Bioinspired chiral inorganic nanomaterials DOI Creative Commons
Nam Heon Cho, Andrés Guerrero‐Martínez,

Jessica Ma

et al.

Nature Reviews Bioengineering, Journal Year: 2023, Volume and Issue: 1(2), P. 88 - 106

Published: Jan. 27, 2023

From small molecules to entire organisms, evolution has refined biological structures at the nanoscale, microscale and macroscale be chiral—that is, mirror dissymmetric. Chirality results in biological, chemical physical properties that can influenced by circularly polarized electromagnetic fields. Chiral nanoscale materials designed mimic, refine advance chiral geometries, engineer optical, for applications photonics, sensing, catalysis biomedicine. In this Review, we discuss mechanisms underlying chirality transfer nature provide design principles nanomaterials. We highlight how features emerge inorganic during synthesis of nanostructures, outline key nanomaterials, including promising designs biomedical applications, such as biosensing immunomodulation. conclude with an outlook future opportunities challenges, need characterization techniques. nanomaterials induce specific physical, phenomena. This Review discusses biomolecules light allow control which applied optical devices,

Language: Английский

Citations

131
Hierarchically Porous Carbons with Highly Curved Surfaces for Hosting Single Metal FeN4 Sites as Outstanding Oxygen Reduction Catalysts DOI Creative Commons
Guangbo Chen, Ruihu Lu, Chenzhao Li

et al.

Advanced Materials, Journal Year: 2023, Volume and Issue: 35(32)

Published: May 3, 2023

Iron-nitrogen-carbon (FeNC) materials have emerged as a promising alternative to platinum-group metals for catalyzing the oxygen reduction reaction (ORR) in proton-exchange-membrane fuel cells. However, their low intrinsic activity and stability are major impediments. Herein, an FeN-C electrocatalyst with dense FeN4 sites on hierarchically porous carbons highly curved surfaces (denoted -hcC) is reported. The -hcC catalyst displays exceptional ORR acidic media, high half-wave potential of 0.85 V (versus reversible hydrogen electrode) 0.5 m H2 SO4 . When integrated into membrane electrode assembly, corresponding cathode maximum peak power density 0.592 W cm-2 demonstrates operating durability over 30 000 cycles under harsh /air conditions, outperforming previously reported Fe-NC electrocatalysts. These experimental theoretical studies suggest that carbon support fine-tunes local coordination environment, lowers energies Fe d-band centers, inhibits adsorption oxygenated species, which can enhance stability. This work provides new insight nanostructure-activity correlation catalysis. It also offers approach designing advanced single-metal-site catalysts energy-conversion applications.

Language: Английский

Citations

108
Assembly: A Key Enabler for the Construction of Superior Silicon‐Based Anodes DOI Creative Commons
Miaomiao Jiang, Junliang Chen, Yingbin Zhang

et al.

Advanced Science, Journal Year: 2022, Volume and Issue: 9(30)

Published: Aug. 31, 2022

Silicon (Si) is regarded as the most promising anode material for high-energy lithium-ion batteries (LIBs) due to its high theoretical capacity, and low working potential. However, large volume variation during continuous lithiation/delithiation processes easily leads structural damage serious side reactions. To overcome resultant rapid specific capacity decay, nanocrystallization compound strategies are proposed construct hierarchically assembled structures with different morphologies functions, which develop novel energy storage devices at nano/micro scale. The introduction of assembly in preparation process silicon-based materials can integrate advantages both nanoscale microstructures, significantly enhance comprehensive performance prepared assemblies. Unfortunately, summary understanding still lacking. In this review, deepened terms driving forces, methods, influencing factors advantages. recent research progress anodes mechanism functional reviewed from aspects spatial confinement, layered construction, fasciculate structure assembly, superparticles, interconnected strategies. Various feasible improvement pointed out. Finally, challenges integrated summarized.

Language: Английский

Citations

87
Crosstalk between mitochondrial biogenesis and mitophagy to maintain mitochondrial homeostasis DOI Creative Commons
Lei Liu, Yanjun Li, Guo Chen

et al.

Journal of Biomedical Science, Journal Year: 2023, Volume and Issue: 30(1)

Published: Oct. 12, 2023

Mitochondrial mass and quality are tightly regulated by two essential opposing mechanisms, mitochondrial biogenesis (mitobiogenesis) mitophagy, in response to cellular energy needs other environmental cues. Great strides have been made uncover key regulators of these complex processes. Emerging evidence has shown that there exists a tight coordination between mitophagy mitobiogenesis, their defects may cause many human diseases. In this review, we will first summarize the recent advances discovery molecular regulations mitobiogenesis then focus on mechanism signaling pathways involved simultaneous regulation tissue or cultured cells needs, stress, pathophysiological conditions. Further studies crosstalk processes at level provide better understanding how cell maintains optimal fitness function under physiological conditions, which holds promise for fighting aging aging-related

Language: Английский

Citations

86
Functional Ordered Mesoporous Materials: Present and Future DOI
Kun Lan, Dongyuan Zhao

Nano Letters, Journal Year: 2022, Volume and Issue: 22(8), P. 3177 - 3179

Published: April 8, 2022

ADVERTISEMENT RETURN TO ISSUEViewpointNEXTFunctional Ordered Mesoporous Materials: Present and FutureKun LanKun LanLaboratory of Advanced Materials, Department Chemistry, State Key Laboratory Molecular Engineering Polymers, College Chemistry Fudan University, Shanghai 200433, P.R. ChinaMore by Kun Lan Dongyuan Zhao*Dongyuan ZhaoLaboratory China*Email: [email protected]More Zhaohttps://orcid.org/0000-0001-8440-6902Cite this: Nano Lett. 2022, 22, 8, 3177–3179Publication Date (Web):April 2022Publication History Published online8 April 2022Published inissue 27 2022https://pubs.acs.org/doi/10.1021/acs.nanolett.2c00902https://doi.org/10.1021/acs.nanolett.2c00902editorialACS PublicationsCopyright © 2022 American Chemical Society. This publication is available under these Terms Use. Request reuse permissions free to access through this site. Learn MoreArticle Views9119Altmetric-Citations15LEARN ABOUT THESE METRICSArticle Views are the COUNTER-compliant sum full text article downloads since November 2008 (both PDF HTML) across all institutions individuals. These metrics regularly updated reflect usage leading up last few days.Citations number other articles citing article, calculated Crossref daily. Find more information about citation counts.The Altmetric Attention Score a quantitative measure attention that research has received online. Clicking on donut icon will load page at altmetric.com with additional details score social media presence for given article. how calculated. Share Add toView InAdd Full Text ReferenceAdd Description ExportRISCitationCitation abstractCitation referencesMore Options onFacebookTwitterWechatLinked InRedditEmail (1 MB) Get e-AlertscloseSUBJECTS:Copolymers,Mesostructures,Molecules,Porous materials,Silica e-Alerts

Language: Английский

Citations

80
Monomicellar assembly to synthesize structured and functional mesoporous carbonaceous nanomaterials DOI
Liang Peng, Huarong Peng, Wei Li

et al.

Nature Protocols, Journal Year: 2022, Volume and Issue: 18(4), P. 1155 - 1178

Published: Dec. 14, 2022

Language: Английский

Citations

77
Constructing Unique Mesoporous Carbon Superstructures via Monomicelle Interface Confined Assembly DOI
Zaiwang Zhao, Linlin Duan, Yujuan Zhao

et al.

Journal of the American Chemical Society, Journal Year: 2022, Volume and Issue: 144(26), P. 11767 - 11777

Published: June 22, 2022

Constructing hierarchical three-dimensional (3D) mesostructures with unique pore structure, controllable morphology, highly accessible surface area, and appealing functionality remains a great challenge in materials science. Here, we report monomicelle interface confined assembly approach to fabricate an unprecedented type of 3D mesoporous N-doped carbon superstructure for the first time. In this large hollow locates center (∼300 nm diameter), ultrathin monolayer spherical mesopores (∼22 nm) uniformly distributes on shells. Meanwhile, small hole (4.0-4.5 is also created interior each mesopore, enabling be totally interconnected. Vitally, such interconnected porous supraparticles exhibit ultrahigh area (685 m2 g-1) good underwater aerophilicity due abundant mesopores. Additionally, number (70-150) mesopores, particle size (22 42 nm), shell thickness (4.0-26 can all accurately manipulated. Besides other configurations involving nanovesicles 2D nanosheets were obtained. Finally, manifest as advanced electrocatalytic material half-wave potential 0.82 V (vs RHE), equivalent value commercial Pt/C electrode, notable durability oxygen reduction reaction (ORR).

Language: Английский

Citations

73
Exceptional Photocatalytic Hydrogen Peroxide Production from Sandwich‐Structured Graphene Interlayered Phenolic Resins Nanosheets with Mesoporous Channels DOI Creative Commons
Qiang Tian, Xiangkang Zeng, Chen Zhao

et al.

Advanced Functional Materials, Journal Year: 2023, Volume and Issue: 33(21)

Published: Feb. 26, 2023

Abstract Harnessing solar energy to produce hydrogen peroxide (H 2 O ) from water O) and dioxygen (O via artificial photosynthesis is an attractive route. To achieve high solar‐to‐H conversion efficiency, herein, interfacial self‐assembly strategy adopted pattern mesoporous resorcinol‐formaldehyde resin (MRF) onto reduced graphene oxide (rGO) form sandwich‐structured rGO@MRF polymeric photocatalysts. The internal layer that mimics the electron transport chain of plant leaf, can effectively transfer electrons, promote two‐electron reduction . Moreover, channels mimic stomata, beneficially boost fluid velocity, enrichment , diffusion H Consequently, developed metal‐free material exceptional solar‐to‐chemical efficiency 1.23%. This ingenious interface engineering brings new opportunities for design efficient

Language: Английский

Citations

64
Fe3O4-doped mesoporous carbon cathode with a plumber’s nightmare structure for high-performance Li-S batteries DOI Creative Commons

Han Zhang,

Mengtian Zhang, Ruiyi Liu

et al.

Nature Communications, Journal Year: 2024, Volume and Issue: 15(1)

Published: June 27, 2024

Shuttling of lithium polysulfides and slow redox kinetics seriously limit the rate cycling performance lithium-sulfur batteries. In this study, Fe

Language: Английский

Citations

57
Tunable Hierarchically Structured Meso-Macroporous Carbon Spheres from a Solvent-Mediated Polymerization-Induced Self-Assembly DOI
Zhiqing Liu, Wei Li, Wenbo Sheng

et al.

Journal of the American Chemical Society, Journal Year: 2023, Volume and Issue: 145(9), P. 5310 - 5319

Published: Feb. 9, 2023

Herein, we report a versatile solvent-mediated polymerization-induced self-assembly (PISA) strategy to directly synthesize highly N-doped hierarchically porous structured carbon spheres with tunable meso-macroporous configuration. The introduction of intermolecular hydrogen bonds is verified enhance the interfacial interactions between block copolymers, oil droplets, and polyphenols. Moreover, dominant hydrogen-bond-driven can be systematically manipulated by selecting different cosolvent systems generate diverse structures from transformation micellar precursor co-assembly. Impressively, present simultaneously sphere sizes mesopores macropores, ranging 1.2 μm, 9/50 227 nm 1.0 40, 183 480, 24, 95 nm. As demonstration, dendritic-like manifest excellent enzyme-like activity, which attributed continuous mass transport multiordered porosity. current study provides new platform for synthesis novel well-defined materials.

Language: Английский

Citations

53