Space‐Confined Metal Ion Strategy for Carbon Materials Derived from Cobalt Benzimidazole Frameworks with High Desalination Performance in Simulated Seawater

Advanced Materials, Journal Year: 2023, Volume and Issue: 35(23)

Published: March 29, 2023

Various metal ions with different valence states (Mg2+ , Al3+ Ca2+ Ti4+ Mn2+ Fe3+ Ni2+ Zn2+ Pb2+ Ba2+ Ce4+ ) are successfully confined in quasi-microcube shaped cobalt benzimidazole frameworks using a space-confined synthesis strategy. More importantly, series of derived carbon materials that confine obtained by high-temperature pyrolysis. Interestingly, the exhibited electric double-layer and pseudocapacitance properties because presence various states. Moreover, additional within may create new phases, which can accelerate Na+ insertion/extraction thus increase electrochemical adsorption. Density functional theory results showed Ti exhibit enhanced resulting from characteristic anatase crystalline phases TiO2 . The Ti-containing have an impressive desalination capacity (62.8 mg g-1 capacitive deionization (CDI) applications high cycling stability. This work provides facile synthetic strategy for confinement metal-organic supports further development seawater CDI.

Language: Английский

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Mn-Co dual sites relay activation of peroxymonosulfate for accelerated decontamination

Applied Catalysis B Environment and Energy, Journal Year: 2023, Volume and Issue: 330, P. 122656 - 122656

Published: March 21, 2023

Language: Английский

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Aerophilic Triphase Interface Tuned by Carbon Dots Driving Durable and Flexible Rechargeable Zn-Air Batteries

Nano-Micro Letters, Journal Year: 2023, Volume and Issue: 15(1)

Published: Jan. 3, 2023

Efficient bifunctional catalysts for oxygen reduction reaction (ORR) and evolution (OER) are vital rechargeable Zn-air batteries (ZABs). Herein, an oxygen-respirable sponge-like Co@C-O-Cs catalyst with oxygen-rich active sites was designed constructed both ORR OER by a facile carbon dot-assisted strategy. The aerophilic triphase interface of cathode efficiently boosts diffusion transfer. theoretical calculations experimental studies revealed that the Co-C-COC can redistribute local charge density lower energy barrier. displays superior catalytic activities half-wave potential 0.82 V ultralow overpotential 294 mV at 10 mA cm-2 OER. Moreover, it drive liquid ZABs high peak power (106.4 mW cm-2), specific capacity (720.7 mAh g-1), outstanding long-term cycle stability (over 750 cycles exhibits excellent feasibility in flexible all-solid-state ZABs. These findings provide new insights into rational design efficient metal-air batteries.

Language: Английский

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Advanced anode materials for potassium batteries: Sorting out opportunities and challenges by potassium storage mechanisms

Matter, Journal Year: 2023, Volume and Issue: 6(10), P. 3220 - 3273

Published: Aug. 9, 2023

Language: Английский

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Pyridinic Nitrogen Sites Dominated Coordinative Engineering of Subnanometric Pd Clusters for Efficient Alkynes’ Semihydrogenation

Advanced Materials, Journal Year: 2023, Volume and Issue: 35(11)

Published: Jan. 3, 2023

Supported metal catalysts have played an important role in optimizing selective semihydrogenation of alkynes for fine chemicals. There into, nitrogen-doped carbons, as a type promising support materials, attracted extensive attentions. However, due to the general phenomenon random doping nitrogen species support, it is still atremendous challenge finely identify which configuration dominates catalytic property alkynes' semihydrogenation. Herein, reported that uniform mesoporous N-doped carbon spheres derived from polypyrrole are used supports immobilized subnanometric Pd clusters, provide particular platform research influence configurations on Comprehensive experimental results and density functional theory calculation indicate pyridinic behavior clusters. The high contents sites offer abundant coordination sites, greatly reduces energy barrier rate-determining reaction step makes clusters own activity. electron effect between highly selective. Additionally, good mesostructures also promote fast transport substrate. Based above, catalyst Pd@PPy-600 exhibits activity (99%) selectivity (96%) phenylacetylene (C8 H6 )

Language: Английский

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Pore engineering of Porous Materials: Effects and Applications

ACS Nano, Journal Year: 2024, Volume and Issue: 18(34), P. 22829 - 22854

Published: Aug. 17, 2024

Porous materials, characterized by their controllable pore size, high specific surface area, and controlled space functionality, have become cross-scale structures with microenvironment effects multiple functions gained tremendous attention in the fields of catalysis, energy storage, biomedicine. They evolved from initial nanopores to multiscale pore-cavity designs yolk-shell, multishells, or asymmetric structures, such as bottle-shaped, multichambered, branching architectures. Various synthesis strategies been developed for interfacial engineering porous including bottom-up approaches using liquid-liquid liquid-solid interfaces "templating" top-down toward chemical tailoring polymers different cross-linking degrees, well interface transformation Oswald ripening, Kirkendall effect, atomic diffusion rearrangement methods. These techniques permit design functional materials diverse effects, size enrichment isolation synergistic local field enhancement enhanced applications. In this review, we delve into interfacial-oriented advanced effects. We also discuss recent progress applications these collaborative structure-activity relationships areas electrochemical conversion, Finally, outline persisting obstacles prospective avenues terms functionalization engineering. The perspectives proposed paper may contribute promote wider various interdisciplinary within confined dimensions structures.

Language: Английский

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Ultrasmall Inorganic Mesoporous Nanoparticles: Preparation, Functionalization, and Application

Advanced Materials, Journal Year: 2024, Volume and Issue: 36(28)

Published: April 30, 2024

Abstract Ultrasmall mesoporous nanoparticles (<50 nm), a unique porous nanomaterial, have been widely studied in many fields the last decade owing to abundant advantages, involving rich mesopores, low density, high surface area, numerous reaction sites, large cavity space, ultrasmall size, etc. This paper presents review of recent advances preparation, functionalization, and applications inorganic for first time. The soft monomicelles‐directed method, contrast hard‐template template‐free methods, is more flexible synthesis nanoparticles. because amphiphilic micelle has tunable functional blocks, controlled molecule masses, configurations mesostructures. Focus on directing monomicelles could be classified into four types, i.e., Pluronic‐type block copolymer monomicelles, laboratory‐synthesized copolymers single‐molecule star‐shaped small‐molecule anionic/cationic surfactant monomicelles. also reviews functionalization inner mesopores outer surfaces, which includes constructing yolkshell structures (encapsulated nanoparticles), anchoring active components packed shell building an asymmetric Janus architecture. Then, several representative applications, catalysis, energy storage, biomedicines are presented. Finally, prospects challenges large‐scale future foreseen.

Language: Английский

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Synergistic Effects of PtRhNiFeCu High Entropy Alloy Nanocatalyst for Hydrogen Evolution and Oxygen Reduction Reactions

Small, Journal Year: 2024, Volume and Issue: 20(26)

Published: Jan. 17, 2024

The unique properties of high entropy alloy (HEA) catalysts, particularly their severe lattice distortion and the synergistic effect multiple components, endow them with exceptional multifunctional catalytic performance. Herein, it is revealed for first time, that ultrasmall PtRhNiFeCu HEA nanoparticles catalyst shows outstanding activity both hydrogen evolution reaction (HER) oxygen reduction (ORR). exhibits an impressively low overpotential 13 mV at 10 mA cm

Language: Английский

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Modulating the Energy Barrier via the Synergism of Cu₃P and CoP to Accelerate Kinetics for Bolstering Oxygen Electrocatalysis in Zn-Air Batteries

ACS Nano, Journal Year: 2024, Volume and Issue: 18(27), P. 17901 - 17912

Published: June 24, 2024

Modulating the energy barrier of reaction intermediates to surmount sluggish kinetics is an utterly intriguing strategy for amplifying oxygen reduction reaction. Herein, a Cu3P/CoP hybrid incorporated on hollow porous N-doped carbon nanospheres via dopamine self-polymerization and high-temperature treatment. The resultant Cu3P/CoP@NC showcases favorable mass activity 4.41 mA mg–1 kinetic current density 2.38 cm–2. Strikingly, catalyst endows aqueous Zn-air battery (ZAB) with large power 209.0 mW cm–2, superb cyclability over 317 h, promising application prospects in flexible ZAB. Theoretical simulations reveal that Cu functions as modulator modify free adsorbs O2 Co sites, hence rushing kinetics. open hydrophilic spherical mesoporous structure provides unimpeded channels reactant diffusion electrolyte penetration, whereas exposed inner outer surfaces can confer plethora accessible actives sites. This research establishes feasible design concept tune catalytic non-noble metal materials by construction rational nanoframework.

Language: Английский

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Monolayer Interfacial Assembly toward Two‐Dimensional Mesoporous Heterostructure for Boosting Wave Absorption

Advanced Functional Materials, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 12, 2025

Abstract Microwave absorption materials play a key role in various fields, including military stealth, human safety protection, and so on. Construction of 2D mesoporous heterostructures is an attractive approach to enhance wave‐absorbing ability, while it still great challenge. Herein, carbon‐MXene‐carbon (MCMCH) with channels parallel surface are successfully prepared via monolayer interfacial assembly strategy. Through the precise adjustment polymerization, cylindrical micelles orderly monolayered assemble on both surfaces MXene nanosheets, resulting switch‐like polydopamine‐MXene‐polydopamine MCMCH finally generated by further calcination. Due excellent dielectric polarization relaxation conductive loss, achieves strongest reflection loss −54.2 dB at thickness only 1.5 mm. The presence mesochannels not introduces air low permittivity for optimal impedance matching, but also extends attenuation path incident electromagnetic wave. maximum radar cross‐section reduction 26.9 m 2 achieved compared perfect electric conductor. This work provides reference engineering based microwave performance.

Language: Английский

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