Recent Advances in Controlling Syntheses and Energy Related Applications of MX<sub>2</sub> and MX<sub>2</sub>/Graphene Heterostructures

Shi, Jianping; Ji, Qingqing; Liu, Zhongfan; Zhang, Yanfeng

doi:10.1002/aenm.201600459

Cited by 47 publications

(30 citation statements)

References 183 publications

(784 reference statements)

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“…34 Among all the supports, the reduced graphene oxide (rGO) is an ideal one because of its large surface area, good electrical conductivity, and excellent mechanical strength. [35][36][37] Metal NPs/rGO composite materials have been synthesised and used as nanocatalysts. Impregnation and coprecipitation are current manufacturing methods to introduce metal NPs on rGO, where metal salts were rst adsorbed on rGO and then reduced by NaBH 4 .…”

Section: Introductionmentioning

confidence: 99%

Pd–Ni nanoparticles supported on reduced graphene oxides as catalysts for hydrogen generation from hydrazine

et al. 2017

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Section: Introductionmentioning

confidence: 99%

Pd–Ni nanoparticles supported on reduced graphene oxides as catalysts for hydrogen generation from hydrazine

et al. 2017

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“…Other than non-noble metals and their alloys, transition metal chalcogenides, carbides, phosphides, nitrides, and borides have also been extensively explored. [10,133] [8,134,135] Several strategies have been developed to optimize the HER catalytic efficiency and stability of MX 2 materials: (i) increasing the number of exposed active edge sites (by reducing size, increasing defects on the basal planes, making vertically aligned morphology etc. ); [14,16,17,77] (ii) improving electrical conductivity of the MX 2 electrocatalysts (by incorporation conductive carbon materials, semiconducting (2H)-to-metallic (1T) phase transformation etc); [19,20,[136][137][138][139] and (iii) enhancing the catalytic activities of the active sites by alloying/doping.…”

Section: Applications As Electrocatalysts For Hydrogen Evolution Reacmentioning

confidence: 99%

Interlayer Nanoarchitectonics of Two‐Dimensional Transition‐Metal Dichalcogenides Nanosheets for Energy Storage and Conversion Applications

Zhang

et al. 2017

Advanced Energy Materials

344

253

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Lamellar transition‐metal dichalcogenides (MX2) have promising applications in electrochemical energy storage and conversion devices due to their two‐dimensional structure, ultrathin thickness, large interlayer distance, tunable bandgap, and transformable phase nature. Interlayer engineering of MX2 nanosheets with large specific surface area can modulate their electronic structures and interlayer distance as well as the intercalated foreign species, which is important for optimizing their performance in different devices. In this review, a summary on recent progress of MX2 nanosheets and the significance of their interlayer engineering is presented firstly. Synthesis of interlayer‐expanded MX2 nanosheets with various strategies is then discussed in detail. Emphasis is focused on their applications in rechargeable batteries, pseudocapacitors, hydrogen evolution reaction (HER) catalysis and treatments of environmental contaminants, demonstrating the importance of interlayer engineering on controlling performance of MX2. The current challenges of the interlayer‐expanded MX2 and outlooks for further advances are finally discussed.

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“…First, a highly controlled synthesis process to obtain high uniform 2D MX 2 heterojunctions is still very difficult. The domain size of the obtained heterostructures via the current growth methods is still too small to meet the requirement of practical applications . Moreover, the orientation control of the as‐grown heterostructures is still not realized.…”

Section: Conclusion and Prospectivesmentioning

confidence: 99%

Epitaxial Stitching and Stacking Growth of Atomically Thin Transition‐Metal Dichalcogenides (TMDCs) Heterojunctions

Chen

Wan

2017

Adv Funct Materials

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(1 of 21)their novel electrical, [9,10,[16][17][18][19][20][21] magnetical, [22,23] optical, [13,[24][25][26][27][28] catalytical, [29][30][31] thermal [32,33] and mechanical properties [34,35] that cannot been seen in the traditional bulk materials. These exciting properties [14,[36][37][38][39][40][41] of TMDCs have offered unprecedented platforms for opening up new fundamental research [21,[42][43][44] and technological innovation. [45][46][47][48][49][50][51][52][53] TMDCs are formed of a "sandwich" structure with two chalcogen atoms layers (S, Se, Te) separated by a transition metal atoms layer (for instance Mo, W, V, Nb, Ti and so on) [38,39] which is different from the single carbon atomic lattice of graphene. [54][55][56][57][58][59][60] Similar with graphite, TMDCs are characterized by the weak van der Waals interaction between interlayers and strong intralayer covalent bonding. Therefore, it offers fantastic transferability of exfoliation of the bulk TMDCs into few-or even single-layered structures by physical or chemical methods, such as mechanical exfoliation by adhesive tape, [61][62][63] liquid exfoliation, [64][65][66][67] and chemical exfoliation assisted by ion intercalation. [68][69][70] Group VI transition metal element [15] dichalcogenides (MX 2 , M = Mo, W; X = S, Se, etc.) have become the flagship materials among the family of 2D-TMDCs layered materials after graphene. [71,72] The electronic and optoelectronic properties of group VI dichalcogenides (MX 2 ) are remarkably affected by the thickness or the number of layers in MX 2 . For example, the band gap of MX 2 could be effectively tuned by the thickness. In addition, the transition from indirect band gap to direct band gap for the semiconducting trigonal prismatic MX 2 as the thickness decreased to a monolayer, [73,74] which results in photoluminescence (PL) enhancement. [75] The semiconducting nature of trigonal prismatic MX 2 guarantees the advantages for future nano-electronic and optoelectronic development based on its high on/off current ratio performance and the presence of fascinating bandgap transition emissions. More importantly, valley pseudospin and layer pseudospin resulting from the strong spin-orbit coupling have been demonstrated in monolayer and few-layered MX 2 , [76][77][78] which is crucial for extensive exploration of spintronics and valleytronic devices. Interestingly, 2D-MX 2 exhibits a variety of infusive characteristics beyond their bulk counterparts due to the quantum confinement and surface effects, [79] which are the most frequently In recent years, ultrathin two-dimensional (2D) transition metal dichalcogenides (TMDCs), such as MX 2 (M = Mo, W; X = S, Se, etc.) have become the flagship materials after graphene. 2D-MX 2 have attracted significant attention due to their novel properties arising from their strict dimensional confinement as well as strong spin-orbit coupling effects, which provides an ideal platform for exploring new fundamental research and realizing technological innovation. The 2D nature and the...

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Recent Advances in Controlling Syntheses and Energy Related Applications of MX₂ and MX₂/Graphene Heterostructures

Cited by 47 publications

References 183 publications

Pd–Ni nanoparticles supported on reduced graphene oxides as catalysts for hydrogen generation from hydrazine

Pd–Ni nanoparticles supported on reduced graphene oxides as catalysts for hydrogen generation from hydrazine

Interlayer Nanoarchitectonics of Two‐Dimensional Transition‐Metal Dichalcogenides Nanosheets for Energy Storage and Conversion Applications

Epitaxial Stitching and Stacking Growth of Atomically Thin Transition‐Metal Dichalcogenides (TMDCs) Heterojunctions

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Recent Advances in Controlling Syntheses and Energy Related Applications of MX2 and MX2/Graphene Heterostructures

Cited by 47 publications

References 183 publications

Pd–Ni nanoparticles supported on reduced graphene oxides as catalysts for hydrogen generation from hydrazine

Pd–Ni nanoparticles supported on reduced graphene oxides as catalysts for hydrogen generation from hydrazine

Interlayer Nanoarchitectonics of Two‐Dimensional Transition‐Metal Dichalcogenides Nanosheets for Energy Storage and Conversion Applications

Epitaxial Stitching and Stacking Growth of Atomically Thin Transition‐Metal Dichalcogenides (TMDCs) Heterojunctions

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Recent Advances in Controlling Syntheses and Energy Related Applications of MX₂ and MX₂/Graphene Heterostructures