Antimonene: From Experimental Preparation to Practical Application

Wang, Xin; Song, Jun; Qu, Junle

doi:10.1002/anie.201808302

Cited by 117 publications

(60 citation statements)

References 131 publications

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“…Lin et al synthesized a Pt/Au bimetallic nanocrystal for FAOR, exhibiting good CO tolerance and high catalytic performance through the direct dehydrogenation pathway [11,12]. Recently, antimonene as an emerging 2D-layered material has attracted great attention for electrochemical applications [13,14], owing to its high surface area, good conductivity, large interlayer channel size, and thermodynamic stability [15]. For example, the shear-exfoliated Sb nanosheets exhibited the enhanced catalytic performance for electrochemical oxygen reaction and hydrogen evolution reaction [16].…”

Section: Introductionmentioning

confidence: 99%

In Situ Exfoliation and Pt Deposition of Antimonene for Formic Acid Oxidation via a Predominant Dehydrogenation Pathway

et al. 2020

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Direct formic acid fuel cell (DFAFC) has been considered as a promising energy conversion device for stationary and mobile applications. Advanced platinum (Pt) electrocatalysts for formic acid oxidation reaction (FAOR) are critical for DFAFC. However, the oxidation of formic acid on Pt catalysts often occurs via a dual pathway mechanism, which hinders the catalytic activity owing to the CO poisoning. Herein, we directly exfoliate bulk antimony to 2D antimonene (Sb) and in situ load Pt nanoparticles onto antimonene sheets with the assistance of ethylenediamine. According to the Bader charge analysis, the charge transfer from antimonene to Pt occurs, confirming the electronic interaction between Pt and Sb. Interestingly, antimonene, as a cocatalyst, alters the oxidation pathway for FAOR over Pt catalyst and makes FAOR follow the more efficient dehydrogenation pathway. The density functional theory (DFT) calculation demonstrates that antimonene can activate Pt to be a lower oxidative state and facilitate the oxidation of HCOOH into CO2 via a direct pathway, resulting in a weakened intermediate binding strength and better CO tolerance for FAOR. The specific activity of FAOR on Pt/Sb is 4.5 times, and the mass activity is 2.6 times higher than the conventional Pt/C.

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Section: Introductionmentioning

confidence: 99%

In Situ Exfoliation and Pt Deposition of Antimonene for Formic Acid Oxidation via a Predominant Dehydrogenation Pathway

et al. 2020

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“…[39][40] Antimonene has recently been added to the family of pnictogen nanomaterials using mechanical exfoliation, 41 liquid-phase exfoliation 42 and epitaxial growth. [43][44] Carbon nanotubes have been used as inert molds to prepare new one-dimensional allotropes of a range of elements including carbon in its various forms, [45][46][47] iodine, 48 sulphur, 49 selenium 50 , tellurium, 51 as well as the two pnictogens phosphorus [52][53] and arsenic. 54 In the case of phosphorus, fibrous chains with alternating P8 and P2 units have been identified inside large-diameter multiwall carbon nanotubes.…”

Section: Introductionmentioning

confidence: 99%

One-Dimensional Pnictogen Allotropes inside Single-Wall Carbon Nanotubes

et al. 2019

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The discovery of phosphorene, a single layer of black phosphorus, has accelerated the investigation of pnictogen nanomaterials, leading to the recent identification of arsenene and antimonene. These two-dimensional nanomaterials display physical properties superior to graphene for some applications. Recently, single-wall carbon nanotubes (SWCNTs) have been filled with P4 molecules from the melt and As4 molecules from the vapor phase. Confined within SWCNTs, polymerization reactions yielded new one-dimensional pnictogen allotropes. Here, we show using high-resolution electron microscopy that such nanostructures can also be observed upon filling SWCNTs from the vapor phase using red phosphorus as the source material. Using larger diameter SWCNTs, the vapor phase favors the formation of double-stranded phosphorus zigzag ladders observed here for the first time. Overall, however, SWCNTs were generally found to fill more efficiently with liquid phosphorus; substantial decreases in the filling yields were observed for both phosphorus and arsenic filling of narrow SWCNTs using the vapor route. Attempts to extend the pnitogen series, using molten antimony gave very low filling yields. However, the antimony zigzag ladder was observed on two occasions suggesting that this structural motif dominates across the pnictogens. Computational predictions of the encapsulation energies of the various pnictogen nanostructures are consistent with the observed experimental trends and band gap calculations predict that the single-stranded zigzag chains of all investigated pnictogens are fully metallic. Using SWCNTs with diameters greater than 1.5 nm displayed a plethora of complex new phosphorus nanostructures which highlights an exciting new avenue for future work in this area.

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“…Among the two-dimensional family of materials, antimony and indium monolayers have drawn a considerable attention [4][5][6][7]. It has been shown that antimony and indium monolayers, namely, antimonene and indiene, cover different parts of the electromagnetic spectrum.…”

Section: Introductionmentioning

confidence: 99%

Modulation of optical properties with multilayer thickness in antimonene and indiene

Mužević¹,

Pajtler²,

Gupta³

et al. 2019

Adv. Mater. Lett.

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Optical properties of 2D materials can be effectively modulated by employing multilayer structures with different number of layers. Using the theoretical approach based on density functional theory we simulated relevant optical spectra of antimony and indium mono-and multilayers. We showed that the electronic band structures of antimonene and indiene possess numerous tracking bands enhancing the transition probability. Therefore, high absorption coefficients are found. Modelled multilayer nanostructures of antimonene and indiene experience a red-shift of absorption bands. Antimonene exhibits an optical directional anisotropy regarding the absorbance coefficient and reflectance spectrum for different nanolayer thicknesses. Indiene possesses very high reflectance and refractive index in the visible and IR spectrum which can be effectively modulated by the number of layers. Our work shows that antimonene and indiene multilayers harbour untapped potential for the optical applications at the nanoscale.

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Antimonene: From Experimental Preparation to Practical Application

Cited by 117 publications

References 131 publications

In Situ Exfoliation and Pt Deposition of Antimonene for Formic Acid Oxidation via a Predominant Dehydrogenation Pathway

In Situ Exfoliation and Pt Deposition of Antimonene for Formic Acid Oxidation via a Predominant Dehydrogenation Pathway

One-Dimensional Pnictogen Allotropes inside Single-Wall Carbon Nanotubes

Modulation of optical properties with multilayer thickness in antimonene and indiene

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