Conversion of 2D MXene to Multi‐Low‐Dimensional GerMXene Superlattice Heterostructure

Rafieerad, Alireza; Amiri, Ahmad; Yan, Weiang; Dhingra, Sanjiv

doi:10.1002/adfm.202108495

Cited by 11 publications

(7 citation statements)

References 59 publications

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“…Furthermore, Figure 2h shows the magnified HR-TEM image of the Pd NP and its lattice interplanar distance is estimated to be 0.22 nm in the crystal plane (111) of the fcc Pd NPs [22]. As shown in Figure 2i, HR-TEM images of hexagonal MXene nanosheets show their lattice fringes with d-spacing of 0.27 nm, which is in good agreement with previous reports [21]. Moreover, in the SAED pattern shown in Figure 2j, the Pd catalytic sites exhibit As shown in Figure 2i, HR-TEM images of hexagonal MXene nanosheets show their lattice fringes with d-spacing of 0.27 nm, which is in good agreement with previous reports [21].…”

Section: Physicochemical Properties Of the Electrocatalystssupporting

confidence: 89%

“…In the diffraction pattern, the broadened and high intense diffraction peaks at 40.2 • , 46.5 • , and 68.1 • that Pd exhibits are associated with the (111), ( 200), (220) crystal planes, respectively, which correspond to fcc Pd (JCPDS no. 05-0681), while the well-defined peaks of (002), (008), ( 103), (104), (107), and (110) at 2θ = 7.5 , respectively, can be assigned to the diffraction of the functionalized hexagonal 2D MXene nanosheets [21]. A non-appearance of the (006) plane and the appearance of (103), (104), and (107) indicate that MXene nanosheets were functionalized and exfoliated with DMSO.…”

Section: Physicochemical Properties Of the Electrocatalystsmentioning

confidence: 98%

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Pd-Decorated 2D MXene (2D Ti3C2Tix) as a High-Performance Electrocatalyst for Reduction of Carbon Dioxide into Fuels toward Climate Change Mitigation

Govindan

Madhu²,

Haija³

et al. 2022

Catalysts

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Palladium nanoparticles (Pd NPs) have attracted considerable attention recently for their excellent catalytic properties in various catalysis reactions. However, Pd NPs have some drawbacks, including their high cost, susceptibility to deactivation, and the possibility of poisoning by intermediate products. Herein, Pd nanoparticles with an average diameter of 6.5 nm were successfully incorporated on electronically transparent 2D MXene (Ti3C2Tix) nanosheets (Pd-MXene) by microwave irradiation. Considering the synergetic effects of ultra-fine Pd NPs, together with the intrinsic properties of 2D MXene, the obtained Pd-MXene showed a specific surface area of 97.5 m2g−1 and multiple pore channels that enabled excellent electrocatalytic activity for the reduction of CO2. Further, the 2D Pd-MXene hybrid nanocatalyst enables selective electroreduction of CO2 into selective production of CH3OH in ambient conditions by multiple electron transfer. A detailed explanation of the CO2RR mechanism is presented, and the faradic efficiency (FE) of CH3OH is tuned by varying the cell potential. Recyclability studies were conducted to demonstrate the practical application of CO2 reduction into selective production of CH3OH. In this study, metal and MXene interfaces were created to achieve a highly selective electroreduction of CO2 into fuels and other value-added chemical products.

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Section: Physicochemical Properties Of the Electrocatalystssupporting

confidence: 89%

Section: Physicochemical Properties Of the Electrocatalystsmentioning

confidence: 98%

Pd-Decorated 2D MXene (2D Ti3C2Tix) as a High-Performance Electrocatalyst for Reduction of Carbon Dioxide into Fuels toward Climate Change Mitigation

Govindan

Madhu²,

Haija³

et al. 2022

Catalysts

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show abstract

“…[110,156,[158][159][160] Specifically, the extraordinary electric/electrochemical properties of MXenes provide them to be a good platform to develop new 2D MXene-based superlattices for energy storage and conversion, such as multi-low-dimensional GerMXene superlattice heterostructures. [161] Besides the above-mentioned typical classes of 2D superlattice materials, with the development of intercalation and other techniques, 2D superlattices composed of organic molecules have brought into novel inorganic-organic hybrid superlattice structures, such as THAB/In 2 Se 3 , [162] TiS 2 (HA) 0.025 , [163] LDHs/Fe-PP, [164] polyaniline-V 2 O 5 , [165] etc. The appearance of new fabrication technologies and novel construction materials will provide further opportunities to design more 2D superlattice structures with desired properties for diverse applications.…”

Section: D Superlattice Materials With Different Constitutional Compo...mentioning

confidence: 99%

“…[ 110 , 156 , 158 , 159 , 160 ] Specifically, the extraordinary electric/electrochemical properties of MXenes provide them to be a good platform to develop new 2D MXene‐based superlattices for energy storage and conversion, such as multi‐low‐dimensional GerMXene superlattice heterostructures. [ 161 ]…”

Section: Classifications Of 2d Superlattice Materialsmentioning

confidence: 99%

Heterostructure Engineering of 2D Superlattice Materials for Electrocatalysis

et al. 2022

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Exploring low‐cost and high‐efficient electrocatalyst is an exigent task in developing novel sustainable energy conversion systems, such as fuel cells and electrocatalytic fuel generations. 2D materials, specifically 2D superlattice materials focused here, featured highly accessible active areas, high density of active sites, and high compatibility with property‐complementary materials to form heterostructures with desired synergetic effects, have demonstrated to be promising electrocatalysts for boosting the performance of sustainable energy conversion and storage devices. Nevertheless, the reaction kinetics, and in particular, the functional mechanisms of the 2D superlattice‐based catalysts yet remain ambiguous. In this review, based on the recent progress of 2D superlattice materials in electrocatalysis applications, the rational design and fabrication of 2D superlattices are first summarized and the application of 2D superlattices in electrocatalysis is then specifically discussed. Finally, perspectives on the current challenges and the strategies for the future design of 2D superlattice materials are outlined. This review attempts to establish an intrinsic correlation between the 2D superlattice heterostructures and the catalytic properties, so as to provide some insights into developing high‐performance electrocatalysts for next‐generation sustainable energy conversion and storage.

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“…fabricated germanane/MXene superlattice heterostructure “GerMXene” that showed excellent dispersibility and stability in aqueous media, high surface area, and negative surface charge. [ 45 ] Based on these studies, we anticipate that the heterostructure of GeH and MXene can be used as an electrode material having enhanced intercalation characteristics and higher energy storage capability in aqueous supercapacitors and batteries.…”

Section: Introductionmentioning

confidence: 99%

2D Germanane‐MXene Heterostructures for Cations Intercalation in Energy Storage Applications

Ghosh,

Ng,

Lazar

et al. 2023

Adv Funct Materials

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Heterostructures offer an exceptional possibility of combining individual 2D materials into a new material having altered properties compared to the parent materials. Germanane (GeH) is a 2D material with many favorable properties for energy storage and catalysis, however, its performance is hindered by its low electrical conductivity. To address the low electrochemical performance of GeH, a heterostructure of GeH and Ti3C2Tx is fabricated. The Ti3C2TX is a layered material belonging to the family of MXenes. The resulting heterostructure (GeMXene) at a defined mass ratio of GeH and Ti3C2Tx shows superior capacitive performance that surpasses that of both pristine materials. The effect of the size of cations and anions for intercalation into GeMXene in different aqueous salt solutions is studied. GeMXene allows only cation intercalation, which is evidenced by the gravimetric electrochemical quartz crystal microbalance (EQCM) technique. The capacitive performance of the GeMXene is compared in neutral, acidic, and alkaline electrolytes to determine the best electrochemical performance. This unleashes the potential use of GeMXene heterostructure in different electrolytes for supercapacitors and batteries. This work will pave the way to explore the heterostructures of other 2D materials such as novel MXenes and functionalized germanane for highly energy‐storage efficient systems, and beyond.

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Conversion of 2D MXene to Multi‐Low‐Dimensional GerMXene Superlattice Heterostructure

Cited by 11 publications

References 59 publications

Pd-Decorated 2D MXene (2D Ti3C2Tix) as a High-Performance Electrocatalyst for Reduction of Carbon Dioxide into Fuels toward Climate Change Mitigation

Pd-Decorated 2D MXene (2D Ti3C2Tix) as a High-Performance Electrocatalyst for Reduction of Carbon Dioxide into Fuels toward Climate Change Mitigation

Heterostructure Engineering of 2D Superlattice Materials for Electrocatalysis

2D Germanane‐MXene Heterostructures for Cations Intercalation in Energy Storage Applications

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