Highly flexible and ultrathin Mo2C film via in-situ growth on graphene oxide for electromagnetic shielding application

Liu, Xingmin; Xu, Hailong; Xie, Fangtong; Fasel, Claudia; Yin, Xiaowei; Riedel, Ralf

doi:10.1016/j.carbon.2020.03.003

Cited by 41 publications

(19 citation statements)

References 53 publications

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“…35–0787). No additional peaks corresponding to metallic molybdenum, molybdenum oxides and nickel–molybdenum alloy were observed over the V−Mo 2 C‐900@NF catalyst [31,32] …”

Section: Resultsmentioning

confidence: 95%

“…No additional peaks corresponding to metallic molybdenum, molybdenum oxides and nickel-molybdenum alloy were observed over the VÀ Mo 2 C-900@NF catalyst. [31,32] In order to further investigate the surface state of VÀ Mo 2 C-900@NF, we have carried out a more detailed characterization. Figure 2e, f were the high resolution TEM (HR-TEM) image and ChemCatChem calculated lattice diffraction patterns.…”

Section: Resultsmentioning

confidence: 99%

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Mo‐Vacancies Defect Engineering of One‐Dimensional Porous Mo₂C Nanowires for Enhanced High‐Efficiency Hydrogen Evolution

et al. 2022

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The large-scale application of efficient water-splitting greatly promote the development of hydrogen economy which benefit both in alleviating the energy crisis and reaching the goal of carbon neutral. To realize considerable hydrogen evolution, rational design of catalysts with controllable structure and surface composition become crucial. In this work, we proposed an enhanced active site originated from Mo-vacancies defect in Mo 2 C crystal which was fabricated by the evaporation of Zn content in well-designed one-dimensional ZnMoO 4 precursor. Density functional theory calculation and experimental results demonstrated that the formation of molybdenum vacancies in molybdenum carbide promoted the water adsorption and H 2 desorption effectively, resulting in an excellent HER reaction dynamics. Moreover, one-dimensional porous nanowires also ensured rapid mass transfer and contributed strong support for superexcellence HER performance. As expected, VÀ Mo 2 C-900@NF exhibited extremely low overpotential (η 10 = 43 mV) at the current density of 10 mA cm À 2 and rapid reaction kinetics (Tafel slope 77.89 mV dec À 1 ).

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“…35–0787). No additional peaks corresponding to metallic molybdenum, molybdenum oxides and nickel–molybdenum alloy were observed over the V−Mo 2 C‐900@NF catalyst [31,32] …”

Section: Resultsmentioning

confidence: 95%

Section: Resultsmentioning

confidence: 99%

Mo‐Vacancies Defect Engineering of One‐Dimensional Porous Mo₂C Nanowires for Enhanced High‐Efficiency Hydrogen Evolution

et al. 2022

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“…177 2020 Elsevier), (B) schematic of the EMI shielding in porous SiC (reproduced with permission from Ref. 178 2017 American Chemical Society) (attenuation), and/or transmitting the induced electromagnetic radiations, 177,179,180 with reflection being the dominant factor, 45 as schematically shown in Figure 12A and B. The high mass density of metal-based EMI shielding materials limits their practical applications.…”

Section: Emi Shieldingmentioning

confidence: 99%

“…[178] 2017 American Chemical Society). EMI shielding materials work by reflecting, absorbing (attenuation), and/or transmitting the induced electromagnetic radiations, 177,179,180 with reflection being the dominant factor, 45 as schematically shown in Figure 12A and B.…”

Section: Applications Of Porous Sic With Controlled Electrical Resist...mentioning

confidence: 99%

Controlling the electrical resistivity of porous silicon carbide ceramics and their applications: A review

Anwar

Bukhari

et al. 2022

Int J Applied Ceramic Tech

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Porous silicon carbide (SiC)‐based ceramics are widely used in numerous applications of technical importance owing to their exceptional structural (e.g., excellent chemical, mechanical, and thermal stability) and functional (e.g., controlled electrical resistivity) properties. Porous SiC with controlled electrical resistivity is required for various advanced applications, for example, power electronic devices, semiconductor processing parts, fusion reactors, thermoelectric energy conversion, electromagnetic shielding, and environmental applications such as heatable filters. The electrical properties of sintered porous SiC are significantly affected by its chemical composition, processing conditions, and microstructure. This article reviews the influence of certain critical factors, such as the polytype, doping conditions, porosity (%), additive composition (oxide additives, element additives, metal nitride/carbide additives, etc.), and processing conditions on the electrical resistivity of porous SiC. Novel applications of porous SiC with controlled electrical resistivity are also discussed in this review.

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“…Raman spectra (Figure 13) of all batches of CNCs were employed to characterize the graphitization degree of the carbon phase deposited onto the surface of the catalysts during the pyrolysis catalytic process. The D band in the Raman spectra at around 1350 cm −1 is associated with the signal from the disordered carbon, while the G band at around 1580 cm −1 is caused by vibration of the ordered graphite carbon atoms [48][49][50]. The intensity ratio of the D band (I D ) to the G band (I G ) is employed to determine the graphitization degree of the carbon phase.…”

Section: Growth Of Carbon Nanotubes Compositesmentioning

confidence: 99%

Upcycling Waste Plastics into Multi-Walled Carbon Nanotube Composites via NiCo2O4 Catalytic Pyrolysis

et al. 2021

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In this work, multi-walled carbon nanotube composites (MWCNCs) were produced by catalytic pyrolysis of post-consumer plastics with aluminium oxide-supported nickel, cobalt, and their bimetallic (Ni/α–Al2O3, Co/α–Al2O3, and NiCo/α–Al2O3) oxide-based catalysts. The influence of catalyst composition and catalytic reaction temperature on the carbon yield and structure of CNCs were investigated. Different temperatures (800, 900, 950, and 1000 °C) and catalyst compositions (Ni, Co, and Ni/Co) were explored to maximize the yield of carbon deposited on the catalyst. The obtained results showed that at the same catalytic temperature (900 °C), a Ni/Co bimetallic catalyst exhibited higher carbon yield than the individual monometallic catalysts due to a better cracking capability on carbon-hydrogen bonds. With the increase of temperature, the carbon yield of the Ni/Co bimetallic catalyst increased first and then decreased. At a temperature of 950 °C, the Ni/Co bimetallic catalyst achieved its largest carbon yield, which can reach 255 mg g−1plastic. The growth of CNCs followed a “particle-wire-tube” mechanism for all studied catalysts. This work finds the potential application of complex oxide composite material catalysts for the generation of CNCs in catalytic pyrolysis of wasted plastic.

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Highly flexible and ultrathin Mo2C film via in-situ growth on graphene oxide for electromagnetic shielding application

Cited by 41 publications

References 53 publications

Mo‐Vacancies Defect Engineering of One‐Dimensional Porous Mo₂C Nanowires for Enhanced High‐Efficiency Hydrogen Evolution

Mo‐Vacancies Defect Engineering of One‐Dimensional Porous Mo₂C Nanowires for Enhanced High‐Efficiency Hydrogen Evolution

Controlling the electrical resistivity of porous silicon carbide ceramics and their applications: A review

Upcycling Waste Plastics into Multi-Walled Carbon Nanotube Composites via NiCo2O4 Catalytic Pyrolysis

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Highly flexible and ultrathin Mo2C film via in-situ growth on graphene oxide for electromagnetic shielding application

Cited by 41 publications

References 53 publications

Mo‐Vacancies Defect Engineering of One‐Dimensional Porous Mo2C Nanowires for Enhanced High‐Efficiency Hydrogen Evolution

Mo‐Vacancies Defect Engineering of One‐Dimensional Porous Mo2C Nanowires for Enhanced High‐Efficiency Hydrogen Evolution

Controlling the electrical resistivity of porous silicon carbide ceramics and their applications: A review

Upcycling Waste Plastics into Multi-Walled Carbon Nanotube Composites via NiCo2O4 Catalytic Pyrolysis

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Product

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Mo‐Vacancies Defect Engineering of One‐Dimensional Porous Mo₂C Nanowires for Enhanced High‐Efficiency Hydrogen Evolution

Mo‐Vacancies Defect Engineering of One‐Dimensional Porous Mo₂C Nanowires for Enhanced High‐Efficiency Hydrogen Evolution