Synergistic Effect of Oxygen Vacancy and High Porosity of Nano MIL‐125(Ti) for Enhanced Photocatalytic Nitrogen Fixation

Angewandte Chemie International Edition, Journal Year: 2023, Volume and Issue: 63(3)

Published: Dec. 5, 2023

This work reports that a low-temperature thermal calcination strategy was adopted to modulate the electronic structure and attain an abundance of surface-active sites while maintaining crystal morphology. All experiments demonstrate new photocatalyst nano MIL-125(Ti)-250 obtained by has abundant Ti

Language: Английский

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Advanced High‐Energy All‐Solid‐State Hybrid Supercapacitor with Nickel‐Cobalt‐Layered Double Hydroxide Nanoflowers Supported on Jute Stick‐Derived Activated Carbon Nanosheets

Small, Journal Year: 2023, Volume and Issue: 20(22)

Published: Dec. 27, 2023

Abstract Developing efficient, lightweight, and durable all‐solid‐state supercapacitors is crucial for future energy storage systems. The study focuses on optimizing electrode materials to achieve high capacitance stability. This introduces a novel two‐step pyrolysis process synthesize activated carbon nanosheets from jute sticks (JAC), resulting in an optimized JAC‐2 material with yield (≈24%) specific surface area (≈2600 m 2 g −1 ). Furthermore, innovative situ synthesis approach employed hybrid nanocomposites (NiCoLDH‐1@JAC‐2) by integrating JAC nickel‐cobalt‐layered double hydroxide nanoflowers (NiCoLDH). These serve as positive the negative asymmetric (HSCs), exhibiting remarkable performance metrics. HSCs of 750 F , capacity 209 mAh (at 0.5 A ), density 100 Wh kg 250 W ) using PVA/KOH solid electrolyte, while maintaining outstanding cyclic Importantly, functional theory framework utilized validate experimental findings, underscoring potential this enhancing HSC enabling large‐scale production transition metal‐based layered hydroxides.

Language: Английский

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Synergistic Effect of Oxygen Vacancy and High Porosity of Nano MIL‐125(Ti) for Enhanced Photocatalytic Nitrogen Fixation

Angewandte Chemie, Journal Year: 2023, Volume and Issue: 136(3)

Published: Dec. 5, 2023

Abstract This work reports that a low‐temperature thermal calcination strategy was adopted to modulate the electronic structure and attain an abundance of surface‐active sites while maintaining crystal morphology. All experiments demonstrate new photocatalyst nano MIL‐125(Ti)‐250 obtained by has abundant Ti 3+ induced oxygen vacancies high specific surface area. facilitates adsorption activation N 2 molecules on active in photocatalytic nitrogen fixation. The NH 3 yield over is enhanced 156.9 μmol g −1 h , twice higher than parent MIL‐125(Ti) (76.2 ). Combined with density function theory (DFT), it shows pattern tends be from “end‐on” “side‐on” mode, which thermodynamically favourable. Moreover, electrochemical tests atomic ratio /Ti 4+ can enhance carrier separation, also promotes efficiency may offer insights into design innovative photocatalysts for various chemical reduction reactions.

Language: Английский

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Tailoring the Electrochemical Responses of MOF‐74 Via Dual‐Defect Engineering for Superior Energy Storage

Advanced Materials, Journal Year: 2024, Volume and Issue: 36(31)

Published: May 23, 2024

Rationally designed defects in a crystal can confer unique properties. This study showcases novel dual-defects engineering strategy to tailor the electrochemical response of metal-organic framework (MOF) materials used for energy storage. Salicylic acid (SA) is identified as an effective modulator control MOF-74 growth and induce structural defects, cobalt cation doping adopted introducing second type defect. The resulting engineered bimetallic MOF exhibits discharging capacity 218.6 mAh g

Language: Английский

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Enhanced Capacitive Deionization of Hollow Mesoporous Carbon Spheres/MOFs Derived Nanocomposites by Interface‐Coating and Space‐Encapsulating Design

Advanced Science, Journal Year: 2024, Volume and Issue: 11(39)

Published: Aug. 14, 2024

Abstract Exploring new carbon‐based electrode materials is quite necessary for enhancing capacitive deionization (CDI). Here, hollow mesoporous carbon spheres (HMCSs)/metal‐organic frameworks (MOFs) derived (NC(M)/HMCSs and NC(M)@HMCSs) are successfully prepared by interface‐coating space‐encapsulating design, respectively. The obtained NC(M)/HMCSs NC(M)@HMCSs possess a hierarchical nanoarchitecture with abundant nitrogen doping, high specific surface area, meso‐/microporous pores. These merits conducive to rapid ion diffusion charge transfer during the adsorption process. Compared NC(M)/HMCSs, exhibit superior electrochemical performance due their better utilization of internal space carbon, forming an interconnected 3D framework. In addition, introduction Ni ions more synergistic effect between ZIF(M)‐derived N‐doped shell compared other (Mn, Co, Cu ions). resultant Ni‐1‐800‐based CDI device exhibits excellent salt capacity (SAC, 37.82 mg g −1 ) good recyclability. This will provide direction MOF nanoparticle‐driven assembly strategy application CDI.

Language: Английский

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Insights into Nano- and Micro-Structured Scaffolds for Advanced Electrochemical Energy Storage

Nano-Micro Letters, Journal Year: 2024, Volume and Issue: 16(1)

Published: Feb. 23, 2024

Abstract Adopting a nano- and micro-structuring approach to fully unleashing the genuine potential of electrode active material benefits in-depth understandings research progress toward higher energy density electrochemical storage devices at all technology readiness levels. Due various challenging issues, especially limited stability, micro-structured (NMS) electrodes undergo fast performance degradation. The emerging NMS scaffold design is pivotal aspect many as it endows them with both robustness enhancement, even though only occupies complementary facilitating components for main mechanism. However, extensive efforts are urgently needed optimizing stereoscopic geometrical scaffolds minimize volume ratio maximize their functionality fulfill ever-increasing dependency desire power source supplies. This review will aim highlighting these strategies, summarizing corresponding strengths challenges, thereby outlining solutions resolve principles, key perspectives future in this field. Therefore, be one earliest reviews from viewpoint.

Language: Английский

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Review of MOF-guided ion transport for lithium metal battery electrolytes

Nano Energy, Journal Year: 2024, Volume and Issue: 125, P. 109571 - 109571

Published: April 4, 2024

Language: Английский

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The influence of metal organic frameworks(MOFs) after tannic acid etching on the performance and structure of loose nanofiltration membranes for enhanced dyes/salts selective separation

Journal of Water Process Engineering, Journal Year: 2025, Volume and Issue: 70, P. 107009 - 107009

Published: Jan. 16, 2025

Language: Английский

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Enhancing Photocatalytic N2 Fixation Efficiency through the Construction of Optimized Hollow ZnO/Cu Mott-Schottky Heterojunction Microreactors

Journal of Alloys and Compounds, Journal Year: 2025, Volume and Issue: unknown, P. 178634 - 178634

Published: Jan. 1, 2025

Language: Английский

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Covalent organic framework nanomaterials: Syntheses, architectures, and applications

Advances in Colloid and Interface Science, Journal Year: 2025, Volume and Issue: 339, P. 103427 - 103427

Published: Feb. 6, 2025

Language: Английский

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