Balancing MXene Surface Termination and Interlayer Spacing Enables Superior Microwave Absorption

Advanced Functional Materials, Journal Year: 2023, Volume and Issue: 33(34)

Published: May 22, 2023

Abstract Surface chemistry and interlayer engineering determines the electrical properties of 2D MXene. However, it remains challenging to regulate surface interfacial MXene simultaneously. Herein, simultaneous modulation Ti 3 C 2 T x termination layer spacing by alkali treatment are achieved. The electromagnetic investigated in detail with respect KOH ammonia concentration dependence. A high caused expand 13.7 Å O/F ratio increase 33.84. Because its weaker ionization effect, provides finer tuning compared drastic intercalation a thorough sweeping F‐containing groups. is enriched conductive ‐OH after treatment, which achieves an effective balance increased resistance. Therefore, NH H O‐Ti broad‐band impedance matching exhibits efficient microwave loss −49.1 dB at low thickness 1.7 mm, frequency bandwidth 3.9 GHz. results herein optimize using achieve broad absorption, providing framework for enhancing wave intrinsic

Language: Английский

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Recent advances in semiconductor heterojunctions: a detailed review of the fundamentals of photocatalysis, charge transfer mechanism and materials

RSC Applied Interfaces, Journal Year: 2023, Volume and Issue: 1(1), P. 43 - 69

Published: Sept. 27, 2023

Semiconductor heterojunctions are pivotal in determining the overall photocatalytic efficiency. This review explores recent advances diverse heterojunction types, charge transfer mechanisms and materials.

Language: Английский

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Recent Advances and Perspectives of Lewis Acidic Etching Route: An Emerging Preparation Strategy for MXenes

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

Published: March 15, 2023

Abstract Since the discovery in 2011, MXenes have become rising star field of two-dimensional materials. Benefiting from metallic-level conductivity, large and adjustable gallery spacing, low ion diffusion barrier, rich surface chemistry, superior mechanical strength, exhibit great application prospects energy storage conversion, sensors, optoelectronics, electromagnetic interference shielding biomedicine. Nevertheless, two issues seriously deteriorate further development MXenes. One is high experimental risk common preparation methods such as HF etching, other difficulty obtaining with controllable groups. Recently, Lewis acidic a brand-new strategy for MXenes, has attracted intensive attention due to its safety ability endow uniform terminations. However, comprehensive review etching method not been reported yet. Herein, we first introduce following four aspects: mechanism, terminations regulation, in-situ formed metals delamination multi-layered Further, applications MXene-based hybrids obtained by route sensors microwave absorption are carefully summarized. Finally, some challenges opportunities also presented.

Language: Английский

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Composites based on layered materials for absorption of microwaves and electromagnetic shielding

Carbon, Journal Year: 2023, Volume and Issue: 211, P. 118072 - 118072

Published: May 9, 2023

Language: Английский

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2D-MXenes to tackle wastewater: From purification to SERS-based sensing

Coordination Chemistry Reviews, Journal Year: 2023, Volume and Issue: 496, P. 215394 - 215394

Published: Aug. 28, 2023

Language: Английский

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Ion-Selective Separation Using MXene-Based Membranes: A Review

ACS Materials Letters, Journal Year: 2023, Volume and Issue: 5(2), P. 341 - 356

Published: Jan. 3, 2023

Global lack of clean water makes it essential that new technologies are developed for separation pollutants from raw water. Membrane has arisen as a promising solution among other conventional liquid-separation processes, such evaporation, distillation, and crystallization. Synthetic polymer membranes have been emphasized an important component in liquid processes due to their outstanding water/salt selectivity ionic conductivity. However, inherent trade-off between permeability remained challenge polymeric membranes. Recently, two-dimensional nanomaterials actively sought after alternative MXene, type nanomaterial, attracting considerable attention building block nanostructured Due several appealing features, surface functional groups with negative charge, they used size-, charge-, adsorption-selective different ions or molecules. This article reviews recent progress MXene-based membranes, particular emphasis on ion-selective applications purification including salt rejection, reverse electrodialysis, heavy metal adsorption. Lastly, the challenges future directions discussed.

Language: Английский

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MXenes: Synthesis, properties, and applications for sustainable energy and environment

Applied Materials Today, Journal Year: 2023, Volume and Issue: 35, P. 101993 - 101993

Published: Nov. 23, 2023

Language: Английский

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Fabrication of highly efficient Rh-doped cobalt–nickel-layered double hydroxide/MXene-based electrocatalyst with rich oxygen vacancies for hydrogen evolution

Journal of Colloid and Interface Science, Journal Year: 2023, Volume and Issue: 640, P. 338 - 347

Published: Feb. 27, 2023

Language: Английский

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Advances in 2D/2D MXenes-based heterostructures for energy storage/conversion applications

Journal of Material Science and Technology, Journal Year: 2024, Volume and Issue: 202, P. 82 - 118

Published: March 29, 2024

Language: Английский

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Impact of various 2D MXene surface terminating groups in energy conversion

Renewable and Sustainable Energy Reviews, Journal Year: 2024, Volume and Issue: 199, P. 114506 - 114506

Published: May 8, 2024

Language: Английский

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