Synergy of photocatalysis and photothermal effect in integrated 0D perovskite oxide/2D MXene heterostructures for simultaneous water purification and solar steam generation

Fan, Deqi; Lü, Yi; Zhang, Hao; Xu, Haolan; Lu, Chunhua; Tang, Yicheng; Yang, Xiaofei

doi:10.1016/j.apcatb.2021.120285

Cited by 177 publications

(66 citation statements)

References 46 publications

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“…Considering this point, MXene-based photothermal hydrogels were developed for multifunctional solar water purification (photothermal) and the degradation of contaminants. Fan et al [18] developed the mixed-dimensional Ti 3 C 2 T x MXene-based nanohetero structures (Ti 3 C 2 T x / La 0.5 Sr 0.5 CoO 3 (MLH)) for promoting solar water evaporation under excellent thermal insulation. Here, a facile hydrothermal reaction process was adopted to attach the 0D La 0.5 Sr 0.5 CoO 3 nanoparticles on Ti 3 C 2 T x MXene.…”

Section: Hydrogelmentioning

confidence: 99%

“…(d) designed prototype of solar-driven sewage purification system (Reprinted from Ref. [18], copyright with permission from Elsevier, 2021), (e,f) top and cross-section view of Janus PMX membrane, and (g) evaporation rate and efficiency of Janus PMX membrane compared to base components (reprinted from Ref. [57], copyright with permission from American Chemical Society, 2021).…”

Section: Hydrogelmentioning

confidence: 99%

“…Thus, it is necessary to estimate the desalination efficiency of Ti 3 C 2 MXene under various surface morphological features. Many morphologies, such as aerosol [15], films [16], foam [17], hydrogel [18], membrane [19], monolith [20] and porous structure [21] have been extracted from layer structured 2D Ti 3 C 2 MXenes. Among the large community of the MXene family, Ti 3 C 2 MXene is skyrocketing in various energy conversion applications, such as hydrogen production [22], dye degradation [23], drug degradation [24], CO 2 reduction [25,26], N 2 reduction [12,27], triboelectric nanogenerator [28], supercapacitor [29], solar cells [30,31], etc.…”

Section: Introductionmentioning

confidence: 99%

“…Figure 5. (a,b) TEM image and interfacial interaction between Ti 3 C 2 T x MXene nanosheets (blue line) and La 0.5 Sr 0.5 CoO 3 nanoparticles (green lines), (c) evaporation efficiency of Ti 3 C 2 T x MXene and La 0.5 Sr 0.5 CoO 3 at different weight ratios, and(d) designed prototype of solar-driven sewage purification system (Reprinted from Ref [18],. copyright with permission from Elsevier, 2021), (e,f) top and cross-section view of Janus PMX membrane, and (g) evaporation rate and efficiency of Janus PMX membrane compared to base components (reprinted from Ref [57],.…”

mentioning

confidence: 99%

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Advancements in Solar Desalination of Seawater by Various Ti3C2 MXene Based Morphologies for Freshwater Generation: A Review

Sreedhar

Noh

2021

Catalysts

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For a few years, we have been witnessing ubiquitous fresh and drinking water scarcity in various countries. To mitigate these problematic situations, many countries relied on non-conventional freshwater generation technologies through solar desalination of seawater. In this manner, we excel the ability of new class 2D Ti3C2 MXenes as a photothermal material (solar absorber) for freshwater generation via the solar desalination technique. In this review, the air–water interfacial interaction is highlighted for improving the evaporation efficiency. To provide the dependence of the desalination efficiency on the microstructure of the solar absorbers, we summarized various forms of 2D Ti3C2 MXenes (aerosol, films, foam, hydrogel, membrane, monolith and porous structure) and their characteristics. These microstructures prevailed ultrahigh photoconversion efficiency. In this aspect, we further explained key features such as light absorption, reflection, multiple internal reflection, hydrophilicity, lower thermal conduction, light-to-heat generation, and salt rejection for achieving efficient desalination output throughout the visible and broadband region. Specifically, we targeted to explore the self-floating and salt rejection nature of various state-of-the-art 2D Ti3C2 MXene structures. Further, we highlighted the long-term stability. Among the above morphologies, Ti3C2 MXene in the form of a membrane is believed to be a promising morphology which effectively desalinates seawater into freshwater. Finally, we highlighted the challenges and future perspectives, which can pave a potential path for advancing the sustainable solar desalination of seawater into freshwater.

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Section: Hydrogelmentioning

confidence: 99%

Section: Hydrogelmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

mentioning

confidence: 99%

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Advancements in Solar Desalination of Seawater by Various Ti3C2 MXene Based Morphologies for Freshwater Generation: A Review

Sreedhar

Noh

2021

Catalysts

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“…With rapid economic development, large amounts of fossil fuels are consumed accompanied by the formation of large amounts of carbon dioxide, leading to a serious energy crisis and environmental pollution [1][2][3][4][5][6][7][8][9][10] . In order to solve these questions, researchers have explored green and low-energy technologies through extensive theoretical and experimental research [11][12][13][14][15][16][17][18][19][20][21][22][23] . Among them, the photocatalytic CO2 reduction has received extensive attention because it can convert CO2 into value-added chemical compound which is essential to alleviate the energy crisis and the greenhouse effect [24][25][26][27][28][29][30] .…”

Section: Introductionmentioning

confidence: 99%

Enhanced Photocatalytic CO2 Reduction over 2D/1D BiOBr0.5Cl0.5/WO3 S-scheme Heterostructure

Zhu¹,

Hong²,

Li-yong³

et al. 2021

Acta Physico Chimica Sinica

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Catalytic reduction of CO2 to CO has been considered promising for converting the greenhouse gas into chemical intermediates. Compared to other catalytic methods, photocatalytic CO2 reduction, which uses solar energy as the energy input, has attracted significant attention because it is a clean and inexhaustible resource. Therefore, using high-performance photocatalysts for effective CO2 reduction under mild reaction conditions is an active research hotspot. However, several current photocatalysts suffer from low solar energy conversion efficiency due to the extensive charge recombination and few active sites, leading to low CO2 reduction efficiency. Generally, constructing an S-scheme heterojunction can not only promote charge separation but also help maintain strong redox ability. Therefore, the S-scheme heterojunction is expected to help in achieving high conversion activity and CO2 reduction efficiency. Here, 2D tetragonal BiOBr0.5Cl0.5 nanosheets and hexagonal WO3 nanorods were prepared using a simple hydrothermal synthesis method, and the 2D/1D BiOBr0.5Cl0.5 nanosheets/WO3 nanorods (BiOBr0.5Cl0.5/WO3) S-scheme heterojunction with near infrared (NIR) light (> 780 nm) response were prepared via the electrostatic self-assembly method for the photocatalytic CO2 reduction. Following characterization and analysis, including diffuse reflectance spectra (DRS), Mott-Schottky plots, transient photocurrent response, time-resolution photoluminescence spectrum (TRPL), electrochemical impedance spectroscopy (EIS), linear sweep voltammetry (LSV), and electron spin resonance (ESR) measurements, it can be demonstrated that an S-scheme carrier transfer route was formed between the 2D BiOBr0.5Cl0.5 nanosheets and 1D WO3 nanorods. Driven by the internal electric field, which was formed between the two semiconductors, electron migration was boosted, thus inhibiting the recombination of photogenerated carriers, while the stronger redox ability was maintained, thus providing good reduction efficiency over BiOBr0.5Cl0.5/WO3 composite in CO2 reduction. In addition, the 2D/1D nanosheet/nanorod structure allowed for enhanced interface contact with abundant active sites, which favored charge separation and increased photocatalytic activity. Furthermore, the amount of WO3 nanorods added during the preparation of the composites was altered, which led to the optimal amount of 5% (w, mass fraction) for the photocatalytic CO2 reduction. As a result, the BiOBr0.5Cl0.5/WO3 composite exhibited superior photocatalytic reduction performance with a CO yield of 16.68 μmol•g −1 •h −1 in the presence of any precious metal cocatalyst or sacrificial agent, which was 1.7 and 9.8 times that of pure BiOBr0.5Cl0.5 and WO3, respectively. In addition, the BiOBr0.5Cl0.5/WO3 composite provided continuously increased CO yields with excellent selectivity under full-spectrum light irradiation, suggesting good photocatalytic stability. This work describes a novel idea for the construction of 2D/1D S-scheme heterojunction photocatalysts for efficient CO2 reduction.

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MXenes‐Reinforced Polymer Composites for Microwave Absorption and Electromagnetic Interference Shielding Applications

Deeraj,

Jayan,

Aparna

et al. 2024

MXene Reinforced Polymer Composites

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Synergy of photocatalysis and photothermal effect in integrated 0D perovskite oxide/2D MXene heterostructures for simultaneous water purification and solar steam generation

Cited by 177 publications

References 46 publications

Advancements in Solar Desalination of Seawater by Various Ti3C2 MXene Based Morphologies for Freshwater Generation: A Review

Advancements in Solar Desalination of Seawater by Various Ti3C2 MXene Based Morphologies for Freshwater Generation: A Review

Enhanced Photocatalytic CO<sub>2</sub> Reduction over 2D/1D BiOBr<sub>0.5</sub>Cl<sub>0.5</sub>/WO<sub>3</sub> S-scheme Heterostructure

MXenes‐Reinforced Polymer Composites for Microwave Absorption and Electromagnetic Interference Shielding Applications

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