Recent advances in MXenes: a promising 2D material for photocatalysis

Shahnoor, Shahnoor; Wang, Xinyu

doi:10.1039/d3qm00216k

Cited by 15 publications

(2 citation statements)

References 101 publications

(137 reference statements)

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“…MXenes with the M n +1 X n T x formula (M: early transition metal, X: C and/or N, T x : functional groups, n = 1–4) are two-dimensional (2D) multilayered materials that recently emerged as cocatalysts for photocatalytic applications due to their unique structural and electronic properties. , As photocatalysts, the formed MXene-derived transition metal oxides (MO x ) can be highly efficient nanomaterials for photocatalytic applications. , MXene-derived MO x are obtained by partial or complete oxidation of MXene (Ti 3 C 2 T x and Ti 2 CT x ) depending on oxidation conditions, and they exhibit superior properties compared to MO x /MXene composites. , Recent advancements in MXene-based photocatalysts highlight their growing significance in environmental and energy challenges, and ongoing research aims to overcome the current limitations and scale up their production for practical applications. − Reported studies pointed out that oxygen-containing functional groups, especially, facilitate the formation of MO x phases . It has been reported that TiO 2 /amorphous carbon sheets can be derived by using flash-heating multilayered Ti 3 C 2 T x in air .…”

Section: Introductionmentioning

confidence: 99%

MXene-Derived Oxide Nanoheterostructures for Photocatalytic Sulfamethoxazole Degradation

Atri,

Loni,

Zazimal

et al. 2024

ACS Appl. Nano Mater.

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Herein, we report for the first time the use of ternary oxide nanoheterostructure photocatalysts derived from (Nb y , Ti 1−y ) 2 CT x MXene in the treatment of water. Three different compositions of binary MXenes, viz., (Ti 0 . 7 5 Nb 0 . 2 5 ) 2 CT x , (Ti 0 . 5 Nb 0 . 5 ) 2 CT x , and (Ti 0.25 Nb 0.75 ) 2 CT x (with T x = OH, F, and Cl), were used as singlesource precursor to produce TiNbO x -3:1, TiNbO x -1:1, and TiNbO x -1:3 by controlled-atmosphere thermal oxidation. Phase identification and Le Bail refinements confirmed the presence of a mixture of rutile TiO 2 and monoclinic Ti 2 Nb 10 O 29 . Morphological investigations through scanning and transmission electron microscopies revealed the retention of layered nanostructures from the MXene precursors and the fusion of TiO 2 and Ti 2 Nb 10 O 29 nanoparticles in forming nanosheets. Among the three oxide nanoheterostructures, TiNbO x -3:1 exhibited the best photocatalytic performance by the removal of 83% of sulfamethoxazole (SMX) after 2 h of reaction. Such a result is explained by a complex influence of structural, morphological, and electronic properties since TiNbO x -3:1 consisted of small-sized crystallites (40−70 nm) and possessed a higher surface area. The suggested electronic band structure is a type-II heterojunction, where the recombination of electrons and holes is minimized during photocatalytic reactions. The photocatalytic degradation of SMX was promoted by the attack of • OH, as evidenced by the detection of 2.2 μM • OH, using coumarin as a probe. This study highlights the potential application of MXene-derived oxide nanoheterostructures in wastewater treatment.

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Section: Introductionmentioning

confidence: 99%

MXene-Derived Oxide Nanoheterostructures for Photocatalytic Sulfamethoxazole Degradation

Atri,

Loni,

Zazimal

et al. 2024

ACS Appl. Nano Mater.

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“…MXenes materials obtained by etching through water-soluble acid solutions, such as HF aqueous solutions, basically have surface functional groups such as -F, -OH, and -O. Recent studies have extended the chemical range (-O, -OH, and -F) of the complete or incomplete surface ends of MXenes to other elements (-N, -NH, -NH 2 , -S, -SH, -H, -Cl, -Br, and -I) [11] since it is considered to be an important parameter that controls the properties of MXenes. The substitution of -O for -OH and -F will lead to a wider bandgap, and the composition of the termination group is also important for controlling the work function of MXenes.…”

Section: Introductionmentioning

confidence: 99%

Roles of MXenes in Photocatalysis

Yang,

Liu,

Hang

et al. 2023

Solar RRL

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Artificial photocatalysis is beneficial to carbon neutrality, renewable resources generation and sustainable society development. Due to the unique layered structure, abundant surface functional groups and tunable electronic properties, Maxine is emerging as a promising contender to improve the comprehensive performance for photocatalysts. Much progress has been made in the study of MXene‐based nanomaterials over the past years, and state‐of‐the‐art advances in the rational design, controllable synthesis, characterization techniques and diverse applications of MXene‐based photocatalysts have been reviewed. However, the roles and perspectives of MXenes in photocatalysis have been less summarized. Based on the analysis of physical/chemical properties of MXenes and the latest research progress, herein we discuss the multiple roles of MXenes in promoting photocatalysis, including carrier for active site anchoring, light‐transmitting media, mass transfer medium, cocatalyst and heat conductor. In addition, current status and challenges of MXenes in photocatalysis are summarized, and the future directions as well as the bottleneck of development need to be broken through for MXenes in photocatalysis are also proposed. This review provides a clear and in‐depth understanding of the physical/chemical properties of MXene‐based photocatalysts and their contributions for photocatalysis.This article is protected by copyright. All rights reserved.

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MXene‐Based Energy Devices: From Progressive to Prospective

Kazim,

Huang,

Hemasiri

et al. 2024

Adv Funct Materials

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Every once in a while, a revolutionary technological development arises, which leads to a significant change in the way to approach research and push development efforts. The appetite for new technology compels society to look for game‐changing materials, that can transform the industry and make advances. Sustainable energy production is paramount to addressing the climate crisis, and energy generation and storage play an important role in the development of self‐powered microelectronic devices. The 2D materials, MXenes have emerged as promising candidates for energy and other applications owing to their inherent electrical merits, high specific surface area, and tunable properties. Particularly, in the context of additive and interfacial materials for perovskite solar cell fabrication and utilization as additives in secondary batteries, this review delves into the application of MXenes in such devices. The protocols of MXenes and their nanostructures tailoring toward such applications and, the underlying mechanism is uncovered. Further, the existing challenges and direction for future in MXene‐based energy harvesters are discussed.

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Recent advances in MXenes: a promising 2D material for photocatalysis

Abstract: Photocatalysis is considered a promising technology for the current environmental crisis and high energy demand caused by industrialization development. However, the practical applications and solutions for conventional catalysts are restricted...

Cited by 15 publications

References 101 publications

MXene-Derived Oxide Nanoheterostructures for Photocatalytic Sulfamethoxazole Degradation

MXene-Derived Oxide Nanoheterostructures for Photocatalytic Sulfamethoxazole Degradation

Roles of MXenes in Photocatalysis

MXene‐Based Energy Devices: From Progressive to Prospective

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