Graphynes for Water Desalination and Gas Separation

Qiu, Hu; Xue, Minmin; Shen, Chun; Zhang, Zhuhua; Guo, Wei

doi:10.1002/adma.201803772

Cited by 82 publications

(58 citation statements)

References 130 publications

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“…The high-temperature treatment of carbonaceous materials is a conventional method of heteroatom doping. Until now, nitrogen-, sulfur-, and phosphorous-doped GDY derivatives have been prepared by this technique [ 65 , 66 , 67 , 68 , 69 , 145 , 146 ]. Chen et al constructed X-doped graphdiynes by replacing a carbon atom (named C1, C2, and C3) ( Figure 14 Da) in GDY with heteroatom X, where X = B, N, P, and S. As a consequence, five models for N- (N1, N2, N3, pdN, and NH 2 ), three models for each B- (B1, B2, and B3), P- (as P1, P2, and P3), and S- (S1, S2, and S3) doped GDY were constructed.…”

Section: Electronic Propertiesmentioning

confidence: 99%

Developments in Synthesis and Potential Electronic and Magnetic Applications of Pristine and Doped Graphynes

et al. 2021

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Doping and its consequences on the electronic features, optoelectronic features, and magnetism of graphynes (GYs) are reviewed in this work. First, synthetic strategies that consider numerous chemically and dimensionally different structures are discussed. Simultaneous or subsequent doping with heteroatoms, controlling dimensions, applying strain, and applying external electric fields can serve as effective ways to modulate the band structure of these new sp2/sp allotropes of carbon. The fundamental band gap is crucially dependent on morphology, with low dimensional GYs displaying a broader band gap than their bulk counterparts. Accurately chosen precursors and synthesis conditions ensure complete control of the morphological, electronic, and physicochemical properties of resulting GY sheets as well as the distribution of dopants deposited on GY surfaces. The uniform and quantitative inclusion of non-metallic (B, Cl, N, O, or P) and metallic (Fe, Co, or Ni) elements into graphyne derivatives were theoretically and experimentally studied, which improved their electronic and magnetic properties as row systems or in heterojunction. The effect of heteroatoms associated with metallic impurities on the magnetic properties of GYs was investigated. Finally, the flexibility of doped GYs’ electronic and magnetic features recommends them for new electronic and optoelectronic applications.

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Section: Electronic Propertiesmentioning

confidence: 99%

Developments in Synthesis and Potential Electronic and Magnetic Applications of Pristine and Doped Graphynes

et al. 2021

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“…Most evidently, the high aspect ratio of 2D nanomaterials allows bulkier components to be transported under tortuous pathways if the pore window is insufficiently large for rapid molecular transport across them. [ 185–191 ] In addition, the thickness of the separation layer in a graphene‐based membrane can be readily adjusted to tune the transport resistance for molecular transport. [ 12,192–194 ] Therefore, in the following section, efforts in the development of single‐ and multilayer graphene‐based membranes ( Figure ) for molecular‐based separation are discussed.…”

Section: Physicochemical Properties Of Graphene‐based Materialsmentioning

confidence: 99%

Graphene‐Based Advanced Membrane Applications in Organic Solvent Nanofiltration

Nie

Chuah

Bae

et al. 2020

Adv Funct Materials

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Owing to the increasing need to mitigate excessive organic solvent waste, the efficient separation and recovery of organic solvents have received major research attention in recent years. The membrane‐based organic solvent nanofiltration (OSN) process has demonstrated its feasibility in addressing this problem with low energy costs, compared to conventional separation techniques, such as adsorption, liquid–liquid extraction, and solvent evaporation. Recently, membranes made of 2D graphene‐based materials have shown great promise because they attain high solvent flux and solute rejection using easy processing methods. Thus, this paper focuses on state‐of‐the‐art studies of graphene‐based membranes used in OSN processes, which include syntheses, characterizations, performance evaluations, membrane fouling, and simulation studies, in combination with the development of the “upper‐bound” line to indicate the performance of graphene‐based membranes. In this paper, critical challenges involved in the development of graphene‐based membranes are also focused on and discussed to map out the future directions of these membranes in industrial OSN processes. In addition to OSN, this paper pertains to a broader audience in other separation processes, particularly in the fields of gas separation and water treatment.

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Section: Introductionmentioning

confidence: 99%

Advances on Graphyne‐Family Members for Superior Photocatalytic Behavior

et al. 2021

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Graphyne (GY) and graphdiyne (GDY) have been employed in photocatalysis since 2012, presenting intriguing electronic and optical properties, such as high electron mobility and intrinsic bandgap due to their high -conjugated structures. Authors are reporting the enhanced photocatalytic efficiency of these carbon allotropes when combined with different metal oxides or other carbon materials. However, the synthesis of graphyne-family members (GFMs) is still very recent, and not much is known about the true potential of these photocatalytic materials. In this review article, the implications of different synthesis routes on the structural features and photocatalytic properties of these materials are elucidated. The application of GFMs in the nicotinamide adenine dinucleotide (NADH) regeneration, hydrogen and oxygen evolution, and carbon dioxide reduction is discussed, as well as in the degradation of pollutants and bacteria inactivation in water and wastewater treatment.

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Graphynes for Water Desalination and Gas Separation

Cited by 82 publications

References 130 publications

Developments in Synthesis and Potential Electronic and Magnetic Applications of Pristine and Doped Graphynes

Developments in Synthesis and Potential Electronic and Magnetic Applications of Pristine and Doped Graphynes

Graphene‐Based Advanced Membrane Applications in Organic Solvent Nanofiltration

Advances on Graphyne‐Family Members for Superior Photocatalytic Behavior

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