2D Single Crystal WSe<sub>2</sub> and MoSe<sub>2</sub> Nanomeshes with Quantifiable High Exposure of Layer Edges from 3D Mesoporous Silica Template

Xu, Wenya; Chai, Kejie; Jiang, Yiwen; Mao, Jianbin; Wang, Jun; Zhang, Pengfei; Shi, Yifeng

doi:10.1021/acsami.9b03435

Cited by 32 publications

(21 citation statements)

References 50 publications

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“…For example, highly ordered porous 2D materials such as WSe 2 and MoSe 2 nanomeshes with single crystallinity were obtained through nanocasting with 3D mesoporous silica (KIT-6) as the template. 136 The well-defined single-crystal-based nanostructure showed periodic pore arrangement in long-range, which made the nanomeshes promising model materials for investigating the relationship between porous structure and (photo)-electrochemical performances. Hopefully, rational design and precise fabrication of hierarchical pore structures with dimensions at different levels will be realized to achieve superior photocatalytic and electrocatalytic performances in the future.…”

Section: Investigation Of the Relationship Between Pore Structure And The Physicochemical Properties Of Porous 2d Materials And Realizatimentioning

confidence: 99%

“…For example, single-crystal MoSe 2 nanomeshes were successfully synthesized through nanocasting with excellent HER electrocatalytic activity and high chemical stability (no degradation of activity after exposure in air even for 6 months). 136 Single-atom catalysis has attracted much attention due to its outstanding activity, selectivity, and stability. 138,139 For example, a high percentage of single-atom-Pt loading anchored by abundant surface-exposed Ti 3+ defects in TiO 2 can realize remarkably higher photocatalytic H 2 production than samples loaded with Pt particles.…”

Section: Development Of Innovative Strategies To Further Enhance the Performance Of Porous 2d Materialsmentioning

confidence: 99%

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Porous Two-Dimensional Materials for Photocatalytic and Electrocatalytic Applications

Wang

Niu

et al. 2020

Matter

317

150

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Two-dimensional materials with abundant in-plane pores (porous 2D materials) have shown high performances as catalysts, especially for photocatalysis and electrocatalysis, owing to their distinct microstructural advantages originating from both 2D materials and porous materials. Here, the recent progress in porous 2D materials in photocatalysis and electrocatalysis is reviewed. We first highlight the influence of their special structural merits on the processes of photocatalysis and electrocatalysis, including transport of ion and/or charge carriers, surface active sites, stability, modifications, electronic band structure, and light absorption properties. Representative synthetic methods for porous 2D materials are also introduced classified by top-down and bottom-up routes. In addition, their applications in different aspects of photocatalysis and electrocatalysis are presented systematically. In conclusion, we propose some opportunities and challenges for the development of porous 2D materials, with the hope of further facilitating the applications of these emerging advanced materials in photocatalysis and electrolysis.

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Section: Investigation Of the Relationship Between Pore Structure And The Physicochemical Properties Of Porous 2d Materials And Realizatimentioning

confidence: 99%

Section: Development Of Innovative Strategies To Further Enhance the Performance Of Porous 2d Materialsmentioning

confidence: 99%

Porous Two-Dimensional Materials for Photocatalytic and Electrocatalytic Applications

Wang

Niu

et al. 2020

Matter

317

150

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“…When evaluated as an anode material for SIBs, the SMSC-1-Mo-2 shows excellent cycling stability and outstanding high rate performance. Furthermore, this method is also suitable for synthesizing other 2D metal sulfide/carbon composites such as WS 2 and ReS 2 with potential applications such as energy storage, [11] catalysis, [31] biomedicine, [32] and sensor. [33]…”

Section: Wt% Vsmentioning

confidence: 99%

“…Traditionally, ordered mesoporous metal sulfide and selenide materials are synthesized by using ordered mesoporous silica as a hard template (e.g., Pluronic P123 for SBA-15). [27][28][29][30][31] Normally, the organic template (such as Pluronic P123 for SBA-15) is removed by calcination or other methods before the mesoporous silica is used as a hard template. However, the as-prepared mesoporous silica with the organic template is still inside the pore channels and is seldom be used directly as templates because their pore channels are blocked.…”

mentioning

confidence: 99%

Versatile Preparation of Mesoporous Single‐Layered Transition‐Metal Sulfide/Carbon Composites for Enhanced Sodium Storage

Xing

Weng

et al. 2021

Advanced Materials

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However, owing to the bigger ionic radius of Na + (1.02 Å) compared to Li + (0.76 Å), the reaction kinetics of SIBs is sluggish with severe volume changes. [3,4,[7][8][9][10] 2D transition-metal sulfides with high theoretical specific capacity (670 mAh g −1 for MoS 2 ) and tunable interlayer spacing have widely been investigated as desirable anode materials for SIBs. [11][12][13][14][15][16] However, the inadequate charge/mass transfer [15] and large volume variation during the charge/discharge cycling tend to deteriorate cycling stability and high rate performance. [17,18] To solve these issues, strategies on modulation of microstructure, expansion of interlayer distance, as well as incorporation of various conductive matrices have been employed. [3,17,[19][20][21] Amphiphilic molecules and polymers such as cetyltrimethylammonium bromide (CTAB), oleylamine, oleic acid, and polyvinyl pyrrolidone (PVP) have been used as expanders and/or carbon precursors to synthesize large interlayer space or singlelayered MoS 2 /carbon composites to improve their electrochemical kinetics and structural stability. [2,[22][23][24][25][26] Wang et al. [18] prepared a 3D MoS 2 nanoflower with an expanded interlayer spacing on doublelayer carbon tubes with the assistance of PVP. Zhu et al. prepared a single-layered ultrasmall nanoplate of MoS 2 embedded in carbon nanofibers by an electrospinning process. [26] Mesoporous materials with a large specific surface area, narrow pore size distribution, and large pore volume offer abundant active sites and efficient mass/charge transfer for sodium storage. Traditionally, ordered mesoporous metal sulfide and selenide materials are synthesized by using ordered mesoporous silica as a hard template (e.g., Pluronic P123 for SBA-15). [27][28][29][30][31] Normally, the organic template (such as Pluronic P123 for SBA-15) is removed by calcination or other methods before the mesoporous silica is used as a hard template. However, the as-prepared mesoporous silica with the organic template is still inside the pore channels and is seldom be used directly as templates because their pore channels are blocked. Unexpectedly, the nitrogen sorption results (Figure S1, Supporting Information) of the untreated SBA-15 (with P123 still inside, named as SBA-15-P123) show that it already has an open pore framework with a considerable specific surface and pore volume. These features make it a potential hard template.Transition-metal sulfides are promising electrochemical energy storage materials due to their abundant active sites, large interlayer space, and high theoretical capacities, especially for sodium storage. However, the low conductivity and poor cycling stability at high current densities hamper their applications. Herein, a versatile dual-template method is reported to elaborate ordered mesoporous single-layered MoS 2 /carbon composite with high specific area, uniform pore size, and large pore volume. The singlelayered MoS 2 is confined in the carbon matrix. The mesopores between the composite nanorods pr...

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“…KIT-6 is a three-dimensional (3D) silica material with high surface area and ordered mesostructure. Xu et al have reported the surface area of KIT-6 as high as 635 m 2 g −1 and mesopore sizes in the range of 8-10 nm [101]. Chen and coworkers prepared KIT-6 in accordance with the procedure described in Fig.…”

Section: Porosity Control In Abo 3 Perovskitesmentioning

confidence: 99%

Recent advances in ABO3 perovskites: their gas-sensing performance as resistive-type gas sensors

Bulemo

Kim

2019

J. Korean Ceram. Soc.

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Perovskite-type oxides with general stoichiometry ABO 3 (A is a lanthanide or alkali earth metal, and B is transition metal) constitute a rich material playground for application as resistive-type gas-sensing layers. Immense interest is triggered by, among other factors, stability of abundant elements (≈ 90% in the periodic table) in this stoichiometry, relatively easy tunability of structure and chemical composition, and their off-stoichiometry stability upon doping. Moreover, their capability to host cationic and abundant oxygen vacancies renders them with excellent electrical and redox properties, and synergistic functions that influence their performance. Herein, we present an overview of recent development in the use of ABO 3 perovskites as resistive-type gas sensors, clearly elucidating current experimental strategies, and sensing mechanisms involved in realization of enhanced sensing performance. Finally, we provide a brief overview of limitations that hamper their potential utilization in gas sensors and suggest new pathways for novel applications of ABO 3 materials.

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2D Single Crystal WSe₂ and MoSe₂ Nanomeshes with Quantifiable High Exposure of Layer Edges from 3D Mesoporous Silica Template

Cited by 32 publications

References 50 publications

Porous Two-Dimensional Materials for Photocatalytic and Electrocatalytic Applications

Porous Two-Dimensional Materials for Photocatalytic and Electrocatalytic Applications

Versatile Preparation of Mesoporous Single‐Layered Transition‐Metal Sulfide/Carbon Composites for Enhanced Sodium Storage

Recent advances in ABO3 perovskites: their gas-sensing performance as resistive-type gas sensors

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2D Single Crystal WSe2 and MoSe2 Nanomeshes with Quantifiable High Exposure of Layer Edges from 3D Mesoporous Silica Template

Cited by 32 publications

References 50 publications

Porous Two-Dimensional Materials for Photocatalytic and Electrocatalytic Applications

Porous Two-Dimensional Materials for Photocatalytic and Electrocatalytic Applications

Versatile Preparation of Mesoporous Single‐Layered Transition‐Metal Sulfide/Carbon Composites for Enhanced Sodium Storage

Recent advances in ABO3 perovskites: their gas-sensing performance as resistive-type gas sensors

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2D Single Crystal WSe₂ and MoSe₂ Nanomeshes with Quantifiable High Exposure of Layer Edges from 3D Mesoporous Silica Template