Two‐Step Synthesis of Hierarchical Dual Few‐Layered Fe3O4/MoS2 Nanosheets and Their Synergistic Effects on Lithium‐Storage Performance

Lu, Fu-Hsing; Xu, Chunbo; Meng, Fuchang; Xia, Tian; Wang, Ruihong; Wang, Jingping

doi:10.1002/admi.201700639

Cited by 23 publications

(13 citation statements)

References 78 publications

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“…Sulfur species are also determined from the high‐resolution S2p XPS spectrum, in which the main doublet located at binding energies of 161.8 eV (S2p 3/2 ) and 163.0 eV (S2p 1/2 ) indicates the presence of S 2− anions in both MoS 2 and Ag 2 S (Figure d). Meanwhile, the binding energy at 169.2 eV suggests the existence of S 4+ species in sulfite groups (SO 3 2− ) …”

Section: Resultsmentioning

confidence: 99%

Surface and Interface Engineering in Ag₂S@MoS₂ Core–Shell Nanowire Heterojunctions for Enhanced Visible Photocatalytic Hydrogen Production

et al. 2018

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An Ag2S@MoS2 core–shell nanowire heterojunction, facilely synthesized by simultaneous sulfuration of Ag nanowires (NMs) and growth of MoS2, is used as a model system to disclose how the surface and interface structures influence the photocatalytic activity. The Ag2S@MoS2 NWs with different loading amounts of MoS2 are used as photocatalysts for H2 production. It is found that the highest photocatalytic activity is realized by a moderate loading amount of MoS2. A lower loading amount of MoS2 not only reduces the interfacial contact for insufficient electron–hole separation but also decreases the number of catalytic active sites for H2 production, while a higher loading amount of MoS2 increases the light‐shielding effect of Ag2S and extends the distance of electron transfer to the catalytic active sites for H2 production. Furthermore, with the same loading amount of MoS2, Ag2S@MoS2 NWs also exhibit superior H2 production activity in comparison with pre‐Ag2S@MoS2 NWs with MoS2 grown on pre‐synthesized Ag2S nanowires. The proposed reason is that the simultaneous sulfuration of Ag nanowires and growth of MoS2 results in an intimate contact between Ag2S and MoS2 for smooth interfacial charge transfer, while the two‐step synthetic method leads to a lower quality of the MoS2‐Ag2S interface and thus poor interelectron transfer. This work highlights the importance of a rational surface and interface design of semiconductor heterojunctions for realizing high‐performance photocatalytic applications.

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Section: Resultsmentioning

confidence: 99%

Surface and Interface Engineering in Ag₂S@MoS₂ Core–Shell Nanowire Heterojunctions for Enhanced Visible Photocatalytic Hydrogen Production

et al. 2018

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“…Owing to the unique nanoflake nanostructures, 2D inorganic materials are considered as promising candidates for energy storage. Lu et al [ 103 ] prepared a 3D hierarchical dual Fe 3 O 4 /MoS 2 (HD-FMN) hybrid nanoarchitecture with an ideal network that was highly effective for improving the performance of LIBs, where the unique structure could provide more contact between MoS 2 and the Fe 3 O 4 nanoflakes (Fig. 8 ).…”

Section: D Nanoflake Ensemble-based Materials For Lithium-ion Battermentioning

confidence: 99%

Section: D Nanoflake Ensemble-based Materials For Lithium-ion Battermentioning

confidence: 99%

“…Similar to the case of lithium-ion batteries, 2D TMDs with larger interlayer spacings are key sodium-ion battery materials, where these materials facilitate rapid insertion and removal of sodium ions. For instance, MoS 2 nanoflakes with different interlayer distances ranging from 0.62 to 0.78 nm were prepared for SIBs [ 103 , 137 ]. The resultant electrode based on MoS 2 nanoflakes with the largest interlayer distance exhibited the highest capacity and best rate capability.…”

Section: D Nanoflake Ensemble-based Materials For Sodium-ion Batterimentioning

confidence: 99%

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Recent Progress on Two-Dimensional Nanoflake Ensembles for Energy Storage Applications

Xia

Zhang

2018

Nano-Micro Lett.

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The rational design and synthesis of two-dimensional (2D) nanoflake ensemble-based materials have garnered great attention owing to the properties of the components of these materials, such as high mechanical flexibility, high specific surface area, numerous active sites, chemical stability, and superior electrical and thermal conductivity. These properties render the 2D ensembles great choices as alternative electrode materials for electrochemical energy storage systems. More recently, recognition of the numerous advantages of these 2D ensemble structures has led to the realization that the performance of certain devices could be significantly enhanced by utilizing three-dimensional (3D) architectures that can furnish an increased number of active sites. The present review summarizes the recent progress in 2D ensemble-based materials for energy storage applications, including supercapacitors, lithium-ion batteries, and sodium-ion batteries. Further, perspectives relating to the challenges and opportunities in this promising research area are discussed.

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“…Combining hierarchical structures and surface chemical compositions is crucial to construct interfacial materials with numerous absorbing properties. The geometric features endow the microspheres with intriguing physical and chemical properties, including magnetic properties, wettability, thus leading to distinctive applications . Due to the intriguing morphology, microspheres with bionic shapes such as raspberry, water strider's leg, or lotus leaf are widely investigated for the construction of superwetting surfaces .…”

Section: Introductionmentioning

confidence: 99%

Elegant Surface of CoNi Alloys toward Efficient Magnetorheological Performances Realized with Carbon Quantum Dots

Zhang

Tian

et al. 2018

Adv Materials Inter

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of superwetting surfaces. [3,4] Up to now, many methods have been developed to produce superhydrophobic surface via creating rough structures or attaching small particles on the surface through various strategies. [5][6][7] Nowadays, transition metals cobalt (Co) and nickel (Ni) and their bimetallic alloys are of great interest on account of their unique and desirable properties, such as high values of saturation magnetization (M s ), excellent mechanical strength, and facile synthesis routes. [8,9] The CoNi alloys have been used in many fields, such as catalysis, microwave absorption, biomedical devices, and magnetic resonance imaging. [10][11][12] In general, the applications of CoNi alloys depend on two factors: chemical composition and morphology, which determine their intrinsic magnetic moment, magnetic permeability, and wettability. In general, Co-rich CoNi alloys possess high values of M s . Stimuli control of magnetic particles is a challenge for basic research, whereas it is a promising way for advanced applications. In contrast to conventional carbonyl iron particles, Co, Ni, and their bimetallic alloys provide a viable alternative for magnetorheological (MR) materials owning to their high values of M s and good controllability for their morphology.MR fluids are a kind of intelligent materials, which usually consist of micrometer-sized magnetizable particles dispersed in a liquid media. [13][14][15] When exposed to an external magnetic field, the dispersed particles get magnetized and develop magnetic moments, which give rise to strong magnetostatic attraction between adjacent particles and consequently build up aligned fiber-like structures. [15,16] The resulting field-induced structures hinder the free flow of the former Newtonian fluid, and high values of the yield stress and viscosity are observed, which is called MR effect. [17] Applications based on MR fluids, such as couplings, actuators, clutches, and vibration dampers, employ the shearing and squeezing strength of MR fluids. [18][19][20] The hottest topics on MR fluids are finding ways to improve their yield stress, stability upon settling, and activity over a wide temperature range. Current fundamental research on MR fluids mainly focuses on the alleviation of settling issues for MR suspensions, which may restrict their use in practical applications. To achieve this goal, several promising strategies Designing and fabricating a rational surface architecture is one of the critical factors to achieve desirable physical and chemical properties and still remains an immense challenge. Herein, a series of CoNi-based hierarchical microspheres with different surface morphologies, including litchi-like, seed-of-plane-tree-like, and waxberry-like shapes, are obtained via surface nucleation of carbon quantum dots (CQDs) with different concentrations in liquid polyol. Microstructure investigations suggest that all the CoNi microspheres are uniformly with enhanced surface roughness with the increasing concentration of CQDs. This study provides insight into...

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Two‐Step Synthesis of Hierarchical Dual Few‐Layered Fe₃O₄/MoS₂ Nanosheets and Their Synergistic Effects on Lithium‐Storage Performance

Cited by 23 publications

References 78 publications

Surface and Interface Engineering in Ag₂S@MoS₂ Core–Shell Nanowire Heterojunctions for Enhanced Visible Photocatalytic Hydrogen Production

Surface and Interface Engineering in Ag₂S@MoS₂ Core–Shell Nanowire Heterojunctions for Enhanced Visible Photocatalytic Hydrogen Production

Recent Progress on Two-Dimensional Nanoflake Ensembles for Energy Storage Applications

Elegant Surface of CoNi Alloys toward Efficient Magnetorheological Performances Realized with Carbon Quantum Dots

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Two‐Step Synthesis of Hierarchical Dual Few‐Layered Fe3O4/MoS2 Nanosheets and Their Synergistic Effects on Lithium‐Storage Performance

Cited by 23 publications

References 78 publications

Surface and Interface Engineering in Ag2S@MoS2 Core–Shell Nanowire Heterojunctions for Enhanced Visible Photocatalytic Hydrogen Production

Surface and Interface Engineering in Ag2S@MoS2 Core–Shell Nanowire Heterojunctions for Enhanced Visible Photocatalytic Hydrogen Production

Recent Progress on Two-Dimensional Nanoflake Ensembles for Energy Storage Applications

Elegant Surface of CoNi Alloys toward Efficient Magnetorheological Performances Realized with Carbon Quantum Dots

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Product

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Two‐Step Synthesis of Hierarchical Dual Few‐Layered Fe₃O₄/MoS₂ Nanosheets and Their Synergistic Effects on Lithium‐Storage Performance

Surface and Interface Engineering in Ag₂S@MoS₂ Core–Shell Nanowire Heterojunctions for Enhanced Visible Photocatalytic Hydrogen Production

Surface and Interface Engineering in Ag₂S@MoS₂ Core–Shell Nanowire Heterojunctions for Enhanced Visible Photocatalytic Hydrogen Production