Phase‐Controlled Pd─S Nanosheet Aerogels for Electrocatalytic Upgrading of Waste Plastics

Advanced Functional Materials, Год журнала: 2025, Номер unknown

Опубликована: Фев. 23, 2025

Abstract Phase engineering of metal sulfides offers a promising strategy to enhance the catalytic performance by adjusting their atomic arrangement and electronic structure. However, achieving continuous phase‐controlled elucidating structure‐performance relationship remains significant challenge. Herein, for first time, novel class palladium‐sulphur nanosheet aerogels (Pd─S NAs) aimed at enhancing electrocatalytic waste polymer‐derived ethylene glycol oxidation reaction (EGOR) is introduced. Remarkably, benefiting from ordered arrangement, Pd 3 S NAs with 4 phase deliver superior toward EGOR, surpassing both S‐doped (Pd 9 amorphous 1 NAs. Density functional theory calculations reveal that different vital structural descriptor performance, where structure intrinsic contribution excellent Compared other Pd─S NAs, have regular arrangements, which promote carbon monoxide intermediate ( * CO), cause optimal adsorption CH₂OHCOO key intermediates during facilitate selective EG glycolic acid, lower barrier in potential determining step reaction, thus presenting EGOR performance. This study advances synthesis Pd‐based nanomaterials highlights importance phase‐dependent properties electrocatalysis.

Язык: Английский

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Efficient nitrate electroreduction to ammonia over Copper catalysts supported on Electron-Delocalized covalent organic frameworks

Chemical Engineering Journal, Год журнала: 2024, Номер unknown, С. 156343 - 156343

Опубликована: Окт. 1, 2024

Язык: Английский

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Fabrication of a Novel Cu Based Conjugated Coordination Polymer for Effective Electroreduction of Nitrate to Ammonia and Zn–Nitrate Batteries

Advanced Functional Materials, Год журнала: 2025, Номер unknown

Опубликована: Март 6, 2025

Abstract Nitrate electroreduction to ammonia (NRA) offers a sustainable pathway convert widespread nitrate pollutants into high‐value NH 3 under ambient conditions. However, the complex electron/proton transfer process in NRA is often hindered by competing hydrogen evolution reactions, leading low selectivity and faradic efficiency. Conjugated coordination polymers (CCPs), characterized high electronic conductivity, abundant metal active sites, tunable structures, emerge as promising catalysts for energy‐related applications. Herein, synthesis of two CCPs, Cu (HITP) 2 /CF (Cu–N 4 ) (HHTP) (Cu–O ), reported featuring unique “pine‐like” morphology grown on copper foam substrates. This design maximizes site exposure, while Cu–N optimizes d‐band center, enhances NO − adsorption, lowers energy barrier rate‐determining step NRA. As result, achieves remarkable yield 19.9 mg h −1 cm −2 with efficiency 87.87%, outperforming /CF. Furthermore, Zn–NO battery using delivers power density 7.18 mW excellent cycling stability over 110 cycles. work underscores potential tuning CCPs environments morphologies enhance performance.

Язык: Английский

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Dual-engineering of VOOH for enhanced phase transition kinetics and stability in aqueous zinc ion batteries

Chemical Engineering Journal, Год журнала: 2025, Номер unknown, С. 162882 - 162882

Опубликована: Апрель 1, 2025

Язык: Английский

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Low-Coordinated Pd–Pb Sites in Porous Pd₃Pb Metallene Aerogels Promote Polyalcohol Electrochemical Oxidation

ACS Materials Letters, Год журнала: 2024, Номер 6(10), С. 4801 - 4809

Опубликована: Сен. 24, 2024

Язык: Английский

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Conjugated Coordination Polymer Aerogels with Increased Accessibility of Well‐Defined Single‐Atom Metal Sites as a New Paradigm of Electrocatalysts

Advanced Materials, Год журнала: 2025, Номер unknown

Опубликована: Фев. 24, 2025

Developing high-performance single-atom catalysts (SACs) with maximum metal utilization efficiency is of significance, which presents enormous potentials to be extensively applied. It desired yet challenging elaborately tailor the coordination structures active sites in SACs and simultaneously enable sufficient accessibility these reactants. Here, a facile general strategy prepare conjugated polymer aerogels (CCPA) porous architectures that can markedly increase their elaborately-tailored sites, as new electrocatalyst paradigm fully present both structural advantages aerogel materials, reported. Taking nickel (Ni) an example, Ni-based CCPA (Ni-CCPA) its counterpart Ni-CCP non-aerogel feature are studied proof-of-concept case. Electrochemical measurements show that, relative Ni-CCP, Ni-CCPA exhibits appreciably higher performance toward alkaline oxygen evolution reaction (OER). Both experimental results theoretical simulations unravel improved OER arises from accelerated OH- diffusion within architecture enhanced concentration near highly exposed at high-curvature surfaces localized electric fields. Importantly, evidenced by Cu-CCPA Zn-CCPA examples, such promisingly applied targeted various catalytic reactions beyond.

Язык: Английский

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A bentonite/ZIF-8 derived ZnO photocatalyst for the effective elimination of a mixture of endocrine disruptors under simulated solar light: estrogenicity mitigation

Dalton Transactions, Год журнала: 2025, Номер unknown

Опубликована: Янв. 1, 2025

The hybrid bentonite/ZnO composites based on the metal-organic framework (MOF) ZIF-8 were synthesized by a microwave method using 2-methylimidazole and zinc nitrate, incorporating natural bentonite (5, 15, 25 wt%) followed thermal treatment at 550 °C. as-prepared materials characterized for their crystal structure, morphology, composition, surface chemical states, textural optical properties. photocatalytic activity of ZnO/bentonite was evaluated in degradation mixture solution endocrine disruptors (EDCs) (bisphenol A, propylparaben, 17α-ethinylestradiol, 5 mg L-1 each) pH = 7 under simulated solar light. material characterization showed that into ZnO increased specific area, facilitated formation oxygen vacancies, decreased recombination rate e-/h+ pairs compared to ZnO. revealed 15 wt%/ZIF-8 derived composite enhanced ZnO, allowing total 61.26% mineralization EDC 240 min. Furthermore, effluent decrease estrogenic end process, with no by-products formed present activity. bentonite/ZIF-8 is proposed as an alternative ZnO-based catalyst effectively removes compounds from aqueous media.

Язык: Английский

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p–d Orbital Hybridization in Pd₃Sn Metallic Aerogels Boosts Alcohol Electrooxidation

Chemistry of Materials, Год журнала: 2024, Номер unknown

Опубликована: Сен. 20, 2024

Язык: Английский

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Polymer-confined synthesis of gram-scale high-entropy perovskite fluoride nanocubes for improved electrocatalytic reduction of nitrate to ammonia

Nanoscale Horizons, Год журнала: 2024, Номер unknown

Опубликована: Янв. 1, 2024

A high-entropy perovskite fluoride with a well-defined nanocubic structure was successfully prepared via polyvinylpyrrolidone-confined nucleation strategy, demonstrating excellent electrocatalytic activity for nitrate reduction.

Язык: Английский

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