Advanced 2D–2D heterostructures of transition metal dichalcogenides and nitrogen-rich nitrides for solar water generation

Wang, Lifeng; Liú, Dan; Jiang, Lu; Ma, Yuxi; Yang, Guoliang; Qian, Yijun; Lei, Weiwei

doi:10.1016/j.nanoen.2022.107192

Cited by 41 publications

(24 citation statements)

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“…The resistance values of 0.02 and 1.3 MΩ for saline water and purified water were recorded by a resistance measurement with a constant distance between two electrodes, indicating effective salt removal (Figure 4c). [49][50][51] The condensed water from the acidic and alkaline seawater also revealed a neutral pH value (Figures 4d,e). Furthermore, according to the UV-vis absorption spectra (Figure 4f), almost no characteristic absorption peak for RhB dye was detected in the purified water, indicating that the dye molecules were not carried into the collected water.…”

Section: Photothermal Conversion Performancementioning

confidence: 95%

Improved Photo‐Excited Carriers Transportation of WS₂‐O‐Doped‐Graphene Heterostructures for Solar Steam Generation

Wang

Yang

Jiang

et al. 2022

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clean water shortages due to its minimal carbon footprint. [9][10][11][12] Photothermal material is a key component in the interfacial solar evaporation systems. Up to now, the main types of photothermal materials such as carbon-based materials, [11,13] plasmonic metal nanoparticles [14][15][16][17] and narrow band-gap semiconductors, [18] have been widely investigated for solar water evaporation.Transition metal dichalcogenides (TMDs), [19][20][21][22] hexagonal boron nitride (h-BN) [23][24][25][26] and transition carbide and nitrides [27][28][29] have been arising extensive interest in photothermal conversion and energy harvesting due to their specific chemical and physical properties. [30] Tungsten disulfide (WS 2 ) , as one of the TMDs materials, has been widely investigated in optoelectronic devices, [31] sensors, [32] energy storage and conversion, [33] and solar steam generation. [34] In addition, WS 2 semiconductor demonstrates a promising photocatalytic degradation of organic pollutants (rhodamine B: RhB) due to its narrow bandgap (1.3 eV) and low electronegative valence band, providing an excellent opportunity for both producing clean water and removing the organic pollutants via solar-driven steam generation. [35] Nevertheless, WS 2 materials exhibit short-wave solar light-absorbing, limiting its full-spectra solar energy utilization and reducing photothermal conversion efficiency. [36] Carbon materials, such as graphene, hold high full-wave solar absorption, excellent structural tunability and light-to-heat conversion efficiency, [13] which could offer a platform to adjust the photothermal capacity of WS 2 by fabricating their heterostructures. In the heterostructure system, the graphene acts as the transport pathway for the photo-excited carrier due to its high mobility and can assist exciton or electron-hole pair's dissociation for improving the photoresponse performance of WS 2 samples. [37] The fabrication of WS 2 -graphene heterostructures usually employs the chemical vapor deposition (CVD) technique or mechanical exfoliation transfer method. [37,38] Although these synthetic processes have high-level controllability, they exhibit low productivity and are only suitable for fundamental research, impeding large-scale manufacturing applications. Two-dimensional (2D) transition metal dichalcogenides and graphene have revealed promising applications in optoelectronic and energy storage and conversion. However, there are rare reports of modifying the light-to-heat transformation via preparing their heterostructures for solar steam generation. In this work, commercial WS 2 and sucrose are utilized as precursors to produce 2D WS 2 -O-doped-graphene heterostructures (WS 2 -O-graphene) for solar water evaporation. The WS 2 -O-graphene evaporators demonstrate excellent average water evaporation rate (2.11 kg m −2 h −1 ) and energy efficiency (82.2%), which are 1.3-and 1.2-fold higher than WS 2 and O-doped graphene-based evaporators, respectively. Furthermore, for the real seawater with different pH values (p...

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Section: Photothermal Conversion Performancementioning

confidence: 95%

Improved Photo‐Excited Carriers Transportation of WS₂‐O‐Doped‐Graphene Heterostructures for Solar Steam Generation

Wang

Yang

Jiang

et al. 2022

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“…In recent years, 2D monolayer films have attracted significant attention in various applications such as separations, proton conduction, energy storage and conversion, solar cells, and electrochemical devices. , In general, 2D monolayer films have the following advantages: (i) high specific surface area and abundant active sites, (ii) specific edge effect capable of enhancing chemical activity, and (iii) notably shortened mass transfer path and significantly increased separation flux due to their porosity and nanoscale thickness. , Typically, graphene as a kind of 2D monolayer films exhibits many excellent properties, including single atom thickness, high crystallinity, and outstanding electrical properties, enabling a broad range of unprecedented applications. , Other 2D monolayer films with similar properties to graphene but with different compositions, such as metal oxides, transition metal dichalcogenides, , hexagonal boron nitride, and graphitic carbon nitrides, have also achieved rapid development.…”

Section: Introductionmentioning

confidence: 99%

“…In recent years, 2D monolayer films have attracted significant attention in various applications such as separations, 1 proton conduction, 2 energy storage and conversion, 3 solar cells, 4 and electrochemical devices. 5,6 In general, 2D monolayer films have the following advantages: (i) high specific surface area and abundant active sites, 7 (ii) specific edge effect capable of enhancing chemical activity, 8 and (iii) notably shortened mass transfer path and significantly increased separation flux due to their porosity and nanoscale thickness.…”

Section: ■ Introductionmentioning

confidence: 99%

“…9,10 Typically, graphene as a kind of 2D monolayer films exhibits many excellent properties, including single atom thickness, high crystallinity, and outstanding electrical properties, enabling a broad range of unprecedented applications. 11,12 Other 2D monolayer films with similar properties to graphene but with different compositions, such as metal oxides, 13 transition metal dichalcogenides, 4,14 hexagonal boron nitride, 15 and graphitic carbon nitrides, 16 have also achieved rapid development.…”

Section: ■ Introductionmentioning

confidence: 99%

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Photoswitchable Nanoporous Metal–Organic Framework Monolayer Film for Light-Gated Ion Nanochannel

Xiao

Shi

Cong

et al. 2023

ACS Appl. Nano Mater.

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Two-dimensional metal−organic framework (MOF) monolayer films, which can be considered as large-area, periodically ordered thin films with atom-or single-unit thickness, have attracted extensive attention due to their special properties and wide range of potential applications. However, the preparation of MOF monolayer films is still a great challenge, and the introduction of functional groups into MOF monolayer films is seldom reported. Here, we report the first centimeterscale, photo-switchable, free-standing MOF monolayer film formed by self-assembly of poly(methyl methacrylate-co-acrylamidoazobenzene)-coated MOF nanoparticles at the water−air interface. This self-assembled MOF monolayer film is extremely thin (∼220 or 50 nm) and has a high MOF loading (85 wt %), while exhibiting remarkable reversible photoswitching properties under alternating exposure to 365 nm UV and white light. Inspired by this, a light-gated ion nanochannel device is fabricated, which enables reversible ″OFF−ON″ changes of the ionic flux and has promising applications in the field of photoelectric conversion. This provides a modular route to design large-area, free-standing functional MOF monolayer films.

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“…Consequently, over the past few years, much research has focused on optimizing lightabsorbing and thermal radiation-mitigating components in photothermal desalination. 10−152 In addition to carbon and g r a p h e n e -b a s e d m a t e r ials, 10,13,[16][17][18]22,24,26,29,[32][33][34]36,37,[42][43][44]46,54,92,99,105 natural biomass-based materials, 20,24,27,30,50,51,66,67,79,108,112,123,127,129 hydrogels, 4 7 , 6 2 , 6 3 , 8 5 , 8 8 − 9 0 , 1 0 8 , 1 0 9 , 1 1 9 , 1 2 3 , 1 2 4 , 1 2 7 , 1 2 9 , 1 4 2 , 1 4 9 MXenes, 1 9 , 7 5 , 9 3 transition metal dichalcogenides (TMDs), 144,149 and nanostructured plasmonic and photonic technologies 5,15,21,25,37,38,43,48−50,98,132,138,153−155 have all been proposed to push evaporation efficiency closer to unity (Figure 1e and Supporting Information). Polymeric supports in the form of polystyrene foams, filter papers, polymer networks, and polymeric membranes have been employed in more than 68% of the reviewed articles 10−152 to reduce losses from the photothermal evaporation surface to the bulk water (Figure 1e).…”

Section: Introductionmentioning

confidence: 99%

Decentralized Solar-Driven Photothermal Desalination: An Interdisciplinary Challenge to Transition Lab-Scale Research to Off-Grid Applications

et al. 2022

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Sunlight can power thermal desalination as a carrier of electromagnetic energy if efficiently turned into heat. In the search for technologies to relieve global water scarcity, thermal desalination has key advantages in terms of sustainability, robustness, and limited salinity dependence. Solar-driven photothermal desalination (SDPD) can enable decentralized water purification, improved accessibility, and reduced environmental impact overcoming limitations of conventional, infrastructureheavy desalination practices. However, there remains a lack of consensus on how to best evaluate the efficiency of diverse lightdriven systems. While developing advanced absorbers, evaporators, and materials for desalination is essential, we have concluded that more efforts should focus on system-wide optimization, with particular attention paid to thermal energy recovery and loss mitigation. This Perspective offers a blueprint for achieving efficient and scalable SDPD under varying solar irradiation, emphasizing the need for interdisciplinary approaches to accomplish this goal.

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Advanced 2D–2D heterostructures of transition metal dichalcogenides and nitrogen-rich nitrides for solar water generation

Cited by 41 publications

References 41 publications

Improved Photo‐Excited Carriers Transportation of WS₂‐O‐Doped‐Graphene Heterostructures for Solar Steam Generation

Improved Photo‐Excited Carriers Transportation of WS₂‐O‐Doped‐Graphene Heterostructures for Solar Steam Generation

Photoswitchable Nanoporous Metal–Organic Framework Monolayer Film for Light-Gated Ion Nanochannel

Decentralized Solar-Driven Photothermal Desalination: An Interdisciplinary Challenge to Transition Lab-Scale Research to Off-Grid Applications

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Advanced 2D–2D heterostructures of transition metal dichalcogenides and nitrogen-rich nitrides for solar water generation

Cited by 41 publications

References 41 publications

Improved Photo‐Excited Carriers Transportation of WS2‐O‐Doped‐Graphene Heterostructures for Solar Steam Generation

Improved Photo‐Excited Carriers Transportation of WS2‐O‐Doped‐Graphene Heterostructures for Solar Steam Generation

Photoswitchable Nanoporous Metal–Organic Framework Monolayer Film for Light-Gated Ion Nanochannel

Decentralized Solar-Driven Photothermal Desalination: An Interdisciplinary Challenge to Transition Lab-Scale Research to Off-Grid Applications

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Improved Photo‐Excited Carriers Transportation of WS₂‐O‐Doped‐Graphene Heterostructures for Solar Steam Generation

Improved Photo‐Excited Carriers Transportation of WS₂‐O‐Doped‐Graphene Heterostructures for Solar Steam Generation