Excellent energy capture of hierarchical MoS2 nanosheets coupled with MXene for efficient solar evaporators and thermal packs

Guo, Zhenzhen; Zhou, Wei; Arshad, Naila; Zhang, Zexian; Yan, Di; Shamim, Tariq; Yu, Li; Wang, Xianbao

doi:10.1016/j.carbon.2021.09.066

Cited by 41 publications

(40 citation statements)

References 33 publications

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“…Solar-driven interfacial evaporation technology (SIE), due to its green and sustainable advantages, has attracted widespread attention in desalination, fresh water production, and wastewater treatment, which is of great importance to alleviate the global water shortages. − In the SIE system, photothermal evaporators are the crucial units to convert light energy to localized heat and then promote vapor generation and transportation from the porous matrix . Till now, many research efforts have been paid to optimize the photothermal evaporators to enhance light absorbance, − promote the evaporation rate, − reduce heat loss, , and others. − After continuous improvements, SIE has now become a powerful water purification technology that can effectively remove insoluble substances, salt ions, and nonvolatile organic compounds from raw water by phase transformation. − However, there is a fatal shortcoming challenging the conventional evaporators and SIE: concurrent evaporation of volatile organic compounds (VOCs). The VOCs widely exist in the form of biological organics derived from microbial metabolism in natural water sources and in the form of synthetic organics in both wastewater and natural water .…”

Section: Introductionmentioning

confidence: 99%

“…1−5 In the SIE system, photothermal evaporators are the crucial units to convert light energy to localized heat and then promote vapor generation and transportation from the porous matrix. 6 Till now, many research efforts have been paid to optimize the photothermal evaporators to enhance light absorbance, 7−9 promote the evaporation rate, 10−12 reduce heat loss, 13,14 and others. 15−18 After continuous improvements, SIE has now become a powerful water purification technology that can effectively remove insoluble substances, salt ions, and nonvolatile organic compounds from raw water by phase transformation.…”

Section: ■ Introductionmentioning

confidence: 99%

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A Light-Permeable Solar Evaporator with Three-Dimensional Photocatalytic Sites to Boost Volatile-Organic-Compound Rejection for Water Purification

Liu

et al. 2022

Environ. Sci. Technol.

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Solar-driven interfacial evaporation (SIE) is emerging as an energy-efficient technology to alleviate the global water shortages. However, there is a fatal disadvantage in using SIE, that is, the volatile organic compounds (VOCs) widely present in feedwater would concurrently evaporate and transport in distilled water, which threatens the water safety. Photocatalysis is a sustainable technology for pollution control, and after years of development, it has become a mature method. Considering the restriction by the insufficient reaction of the permeating VOCs on the two-dimensional (2D) light-available interface of conventional materials, a 3D photocatalytic approach can be established to boost VOC rejection for photothermal evaporation. In the present work, a light-permeable solar evaporator with 3D photocatalytic sites is constructed by a porous sponge decorated with BiOBrI nanosheets with oxygen-rich vacancies. The 3D microchannels in the evaporator provide a light-permeable path with the deepest irradiation depth of about 580 μm, and the reactive interface is increased by tens of times compared with the traditional 2D membrane, resulting in suppression of VOC remnants in distilled water by around four orders of magnitude. When evaporating river water containing 5 mg L–1 extra added phenol, no phenol residues (below 0.001 mg/L) were detected in the produced freshwater. This development is believed to provide a powerful strategy to resolve the VOC bottleneck of SIE.

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Section: Introductionmentioning

confidence: 99%

Section: ■ Introductionmentioning

confidence: 99%

A Light-Permeable Solar Evaporator with Three-Dimensional Photocatalytic Sites to Boost Volatile-Organic-Compound Rejection for Water Purification

Liu

et al. 2022

Environ. Sci. Technol.

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“…In the S 2p core-level region shown in Figure S7c, two peaks at ∼161.6 and ∼163.1 eV are assigned to S 2p 3/2 and S 2p 1/2 , respectively, of the 1T phase MoS 2 . The two peaks at ∼162.1 and ∼164.2 eV are attributed to S 2p 3/2 and S 2p 1/2 , respectively, of the 2H phase MoS 2 . , The XPS results illustrate the coexistence of the 1T phase and 2H phase in CoMoS 2 grown on Ti 3 C 2 (CoMoS 2 /Ti 3 C 2 ). The core-level peak regions of Mo 3d and S 2p for CoMoS 2 /Ti 3 C 2 were deconvolved.…”

Section: Resultsmentioning

confidence: 89%

Co-Doped MoS₂ Nanosheets Vertically Grown on Ti₃C₂ MXenes for Efficient Hydrodesulfurization in High-Temperature Environments

Wang

Bai

Zhang

et al. 2022

ACS Appl. Nano Mater.

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Hydrodesulfurization (HDS) is an important technique that is widely adopted in the petroleum industry to remove harmful sulfur compounds for environmental protection. MoS2 is the most commonly employed HDS catalyst but tends to stack due to its high surface energy. Active MoS2 nanosheets are anticipated to be well supported for preventing aggregation and increasing accessibility. In the current study, two-dimensional Ti3C2 MXene is utilized as a novel support to controllably anchor MoS2 nanosheets for efficient HDS. The composite of Ti3C2-supported CoMoS2 (CoMoS2/Ti3C2) with a 3D interconnected network was successfully constructed by a facile, one-step hydrothermal method. Detailed characterizations showed that MoS2 nanosheets vertically grew in situ on and between the layers of Ti3C2 MXene. CoMoS2/Ti3C2 possesses a well-defined open structure with a larger specific surface area and a higher proportion of CoMoS active phase compared with unsupported CoMoS2. As catalyzed by CoMoS2/Ti3C2, the reaction rate constant was effectively increased to 2.8 times that on CoMoS2 for the HDS of dibenzothiophene. CoMoS2/Ti3C2 also showed good stability in a harsh high-temperature reaction environment.

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“…Compared with the 3D structure of the natural biomass and foam materials, some 2D substrates with small-thickness are also able to play a superior performance, such as film and membrane [90][91][92][93][94][95][96][97]. As shown in Fig.…”

Section: Substratesmentioning

confidence: 99%

Towards highly salt-rejecting solar interfacial evaporation: Photothermal materials selection, structural designs, and energy management

Wei

Wang

Guo

et al. 2022

Nano Research Energy

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With the development of the industry, water pollution and shortage have become serious global problems. Owing to the abundance of seawater storage on earth, efficient solar-driven evaporation is a promising approach to relieve the freshwater shortage. The solar-driven evaporation has attracted tremendous attention due to its potential application in the seawater desalination and wastewater treatment fields. Also, the solar-driven evaporation efficiency can be enhanced by designing both solar absorbers and structures. Up to now, many strategies have been explored to achieve high solar-driven evaporation efficiency, mainly including the selection of photothermal conversion materials and structure optimization. In this review, the solar absorbers, structural designs, and energy management are proposed as the keys for high performance solar-driven evaporation systems. We report four kinds of solar absorbers based on different photothermal conversion mechanisms, substrate structure designs, and energy management methods for the purpose to achieve high conversion efficiency. And we also systematically investigate the available salt-rejections strategies for seawater desalination. This review aims to summarize the current development of efficient solar-driven evaporation systems and provide insights into the photothermal conversion materials, structural designs, and energy management. Finally, we propose the perspectives of the salt-rejection technologies for seawater desalination.

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Excellent energy capture of hierarchical MoS2 nanosheets coupled with MXene for efficient solar evaporators and thermal packs

Cited by 41 publications

References 33 publications

A Light-Permeable Solar Evaporator with Three-Dimensional Photocatalytic Sites to Boost Volatile-Organic-Compound Rejection for Water Purification

A Light-Permeable Solar Evaporator with Three-Dimensional Photocatalytic Sites to Boost Volatile-Organic-Compound Rejection for Water Purification

Co-Doped MoS₂ Nanosheets Vertically Grown on Ti₃C₂ MXenes for Efficient Hydrodesulfurization in High-Temperature Environments

Towards highly salt-rejecting solar interfacial evaporation: Photothermal materials selection, structural designs, and energy management

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Excellent energy capture of hierarchical MoS2 nanosheets coupled with MXene for efficient solar evaporators and thermal packs

Cited by 41 publications

References 33 publications

A Light-Permeable Solar Evaporator with Three-Dimensional Photocatalytic Sites to Boost Volatile-Organic-Compound Rejection for Water Purification

A Light-Permeable Solar Evaporator with Three-Dimensional Photocatalytic Sites to Boost Volatile-Organic-Compound Rejection for Water Purification

Co-Doped MoS2 Nanosheets Vertically Grown on Ti3C2 MXenes for Efficient Hydrodesulfurization in High-Temperature Environments

Towards highly salt-rejecting solar interfacial evaporation: Photothermal materials selection, structural designs, and energy management

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Product

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Co-Doped MoS₂ Nanosheets Vertically Grown on Ti₃C₂ MXenes for Efficient Hydrodesulfurization in High-Temperature Environments