3D macroscopic graphene oxide/MXene architectures for multifunctional water purification

Ming, Xin; Guo, Ankang; Zhang, Qian; Guo, Zhenzhen; Fang, Yu; Hou, Baofei; Wang, Yu; Homewood, K. P.; Wang, Xianbao

doi:10.1016/j.carbon.2020.06.023

Cited by 143 publications

(53 citation statements)

References 62 publications

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“…2.5 L). Notably, the concentration of Na + in gathered water after desalination (3.3 ppm) is sharply decreased by three orders of magnitude compared with the seawater (22,197.9 ppm), and below the standard defined by the World Health Organization (WHO) [28,[60][61][62][63]. The concentrations of other main ions (e.g., K + , Mg 2+ and Ca 2+ ) in the gathered water go down significantly (Fig.…”

Section: Real-world Solar Seawater Desalinationmentioning

confidence: 87%

“…As a pivotal component of ISSG system, solar absorber acts as photo-thermal converter to provide thermal energy for water evaporation [10,11]. Until now, various types of solar absorbers have been developed, including metal nanoparticles [12][13][14][15][16], semi-conductor material [17], conjugated polymer [18], carbon material [19][20][21][22][23], and hydrogel [24,25]. Despite the significant progress achieved, these absorbers usually show drawbacks of high cost and complex synthesis process.…”

Section: Introductionmentioning

confidence: 99%

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High-performance salt-resistant solar interfacial evaporation by flexible robust porous carbon/pulp fiber membrane

et al. 2021

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Solar evaporation has emerged as an attractive technology to produce freshwater by utilizing renewable solar energy. However, it remains a huge challenge to develop efficient solar steam generators with good flexibility, low cost and remarkable salt resistance. Herein, we prepare flexible, robust solar membranes by filtration of porous carbon and commercial paper pulp fiber. The porous carbon with well-defined structures is prepared through controlled carbonization of biomass/waste plastics by eutectic salts. We prove the synergistic effect of porous carbon and paper pulp fiber in boosting solar evaporation performance. Firstly, the porous carbon displays a high light absorption, while the paper pulp fiber with good hydrophilicity effectively promotes the transport of water. Secondly, the combination between porous carbon and paper pulp fiber reduces the water vaporization enthalpy by 20%, which is important to significantly improve the evaporation performance. As a proof of concept, the porous carbon/paper pulp fiber membrane possesses a high evaporation rate of 1.8 kg m −2 h −1 under 1 kW m −2 irradiation. Thirdly, the good flexibility and mechanical property of paper pulp fiber enable the solar membrane to work well under extreme conditions (e.g., after 20 cycles of folding/stretching/ recovery). Lastly, due to the super-hydrophilicity and superwetting, the hybrid membrane exhibits the exceptional salt resistance and long-term stability in continuous seawater desalination, e.g., for 50 h. Importantly, a large-scale solar desalination device for outdoor experiments is developed to produce freshwater. Consequently, this work provides a new insight into developing advanced flexible solar evaporators with superb performance in seawater desalination.

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Section: Real-world Solar Seawater Desalinationmentioning

confidence: 87%

Section: Introductionmentioning

confidence: 99%

High-performance salt-resistant solar interfacial evaporation by flexible robust porous carbon/pulp fiber membrane

et al. 2021

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“…10 Due to their excellent electrical conductivity properties, MXenes were initially studied as energy storage materials for lithium-ion batteries [11][12][13][14][15][16][17] and supercapacitors. [18][19][20][21][22][23] In the past few years, MXenes have been explored and studied for use in many other applications, such as in electronics, [24][25][26][27] biomedicine, 28,29 sensors, [30][31][32][33][34][35][36][37] biosensors, [38][39][40][41][42][43][44] photothermal conversion, [45][46][47] water purification, [48][49][50][51] and even in the field of catalysis. [52][53][54][55][56][57]…”

Section: Introductionmentioning

confidence: 99%

A comprehensive review of MXenes as catalyst supports for the oxygen reduction reaction in fuel cells

et al. 2021

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The oxygen reduction reaction (ORR) that occurs in the cathode of fuel cells is a major issue in proton exchange membrane fuel cells (PEMFCs) due to their sluggish kinetics. Exploring suitable materials for use as cathode catalysts can be challenging because the materials should be chemically active yet must be stable in an extremely corrosive environment in fuel cells. Since the successful introduction of graphene, 2-dimensional (2D) materials have received extensive research interest regarding their use as support materials for cathode catalysts due to their large surface area for catalyst dispersion. Recently, research on 2D MXene-based catalyst supports has started to increase. Excellent electronic properties, electrical conductivity, hydrophilicity and chemical and thermal stability are the key properties of potential MXenes used as catalyst supports. Therefore, in this review, the properties and performance of 2D MXene-based catalyst supports in the ORR are comprehensively discussed. This finding provides the groundwork for the exploration of MXenes in electrocatalysis, especially in the ORR. Challenges and future research directions are also discussed in this review.

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“…With the ever-increasing demand of clean and renewable energy resources [1][2][3][4], considerable attention has been devoted to the development of novel materials toward efficient solar cells [5][6][7][8][9][10][11][12][13][14]. As a family of important two-dimensional materials, MXenes, layered carbides and nitrides of transition metals first reported by the Gogotsi group in 2011 [15], which have been extensively investigated in various fields including energy storage [16][17][18][19][20][21][22], biomedical fields [23][24][25], electromagnetic applications [26][27][28][29], sensors [30][31][32][33][34], light-emitting diodes [35][36][37], water purification [38][39][40][41][42][43] and catalysis [44][45][46]…”

Section: Introductionmentioning

confidence: 99%

“…With the ever-increasing demand of clean and renewable energy resources [ 1 – 4 ], considerable attention has been devoted to the development of novel materials toward efficient solar cells [ 5 – 14 ]. As a family of important two-dimensional materials, MXenes, layered carbides and nitrides of transition metals first reported by the Gogotsi group in 2011 [ 15 ], which have been extensively investigated in various fields including energy storage [ 16 – 22 ], biomedical fields [ 23 – 25 ], electromagnetic applications [ 26 – 29 ], sensors [ 30 – 34 ], light-emitting diodes [ 35 – 37 ], water purification [ 38 – 43 ] and catalysis [ 44 – 47 ], have exhibited promising application in solar cells very recently. Among various MXenes, Ti 3 C 2 T x (T represents some surface-terminating functional groups such as –O, –OH and –F) dominates the present study of MXenes in solar cells because of its high electrical conductivity and carrier mobility, excellent transparency and tunable work function (WF) [ 48 – 50 ].…”

Section: Introductionmentioning

confidence: 99%

MXenes for Solar Cells

et al. 2021

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Application of two-dimensional MXene materials in photovoltaics has attracted increasing attention since the first report in 2018 due to their metallic electrical conductivity, high carrier mobility, excellent transparency, tunable work function and superior mechanical property. In this review, all developments and applications of the Ti3C2Tx MXene (here, it is noteworthy that there are still no reports on other MXenes’ application in photovoltaics by far) as additive, electrode and hole/electron transport layer in solar cells are detailedly summarized, and meanwhile, the problems existing in the related studies are also discussed. In view of these problems, some suggestions are given for pushing exploration of the MXenes’ application in solar cells. It is believed that this review can provide a comprehensive and deep understanding into the research status and, moreover, helps widen a new situation for the study of MXenes in photovoltaics.

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3D macroscopic graphene oxide/MXene architectures for multifunctional water purification

Cited by 143 publications

References 62 publications

High-performance salt-resistant solar interfacial evaporation by flexible robust porous carbon/pulp fiber membrane

High-performance salt-resistant solar interfacial evaporation by flexible robust porous carbon/pulp fiber membrane

A comprehensive review of MXenes as catalyst supports for the oxygen reduction reaction in fuel cells

MXenes for Solar Cells

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