Preparation of nano-sized titanium carbide particles via a vacuum carbothermal reduction approach coupled with purification under hydrogen/argon mixed gas

Xie, Zhiwu; Deng, Yi; Yang, Yuanyi; Su, Hua; Zhou, Di; Liu, Can; Yang, Weizhong

doi:10.1039/c6ra28264d

Cited by 27 publications

(12 citation statements)

References 37 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The intensity of (111) and (200) planes for TiC phase has also increased but (220) plane has decreased marginally with increase in C% in Cu-TiC films. The variation of C% directly reflects the intensity of the TiC phase in all the films thereby influencing the crystalline property [18]. The C atoms (atomic radius 0.67 Å) can easily reside in the gaps of interstitial crystal structure of Ti (atomic radius 1.76 Å).…”

Section: Methodsmentioning

confidence: 99%

See 1 more Smart Citation

Carbon impact on surface morphology and electrical properties of Cu-TiC thin film

Roy

Hembram

Ghosh

et al. 2020

Mater. Res. Express

View full text Add to dashboard Cite

In recent years, synthesis of TiC reinforced Cu matrix composites are comprehensively utilized for industrial applications. Synthesis of Cu-TiC as a thin film can also be an intriguing challenge for such applications. In this work, Cu-TiC thin film was deposited by DC magnetron co-sputtering method and examined to investigate the role of C content on the micro-structure, electrical conductivity and surface morphology by using XRD, UV-vis spectroscopy, I-V characteristics, AFM, SEM and EDX analysis. The wt% of C was varied from 14 to 67% while depositing the Cu-TiC films. All the films have resulted to be polycrystalline with Cu and TiC phases. The optical band-gap has decreased from 2.59 to 1.93 eV and the refractive index got enhanced from 2.92 to 3.38 with increase in wt% of C. The ideality factor, electrical resistance, surface roughness across the films has also decreased as wt% of C was increased in Cu-TiC films.

show abstract

Section: Methodsmentioning

confidence: 99%

“…The average particle sizes have decreased from 24.26 nm in the initial film to 17.98 nm in the 50% C weighted film. So the average particle size has decreased and level of agglomeration has declined with increase in carbon content [18]. But in the last two films it has increased to 21.22 nm respectively.…”

Section: Influence Of C Content On Dc Conductivitymentioning

confidence: 97%

Carbon impact on surface morphology and electrical properties of Cu-TiC thin film

Roy

Hembram

Ghosh

et al. 2020

Mater. Res. Express

View full text Add to dashboard Cite

show abstract

“…An interplanar spacing of 2.50 Å was measured from the HRTEM image (inset in Figure 9b), which corresponds to the reported lattice spacing of (111) plane for TiC. [58,59] Figure 9c is the SAED pattern obtained from the TEM image of the TiC fibers. Facecentered cubic (FCC) crystal structure of the fiber is clearly observed.…”

Section: Resultsmentioning

confidence: 58%

Synthesis and Characterization of TiC Nanofibers Obtained via a Modified Carbothermal Process

Tsai

Mondal

2021

Crystal Research and Technology

View full text Add to dashboard Cite

A simple method for synthesis of titanium carbide (TiC) nanofibers by a modified carbothermal reduction of electrospun titanium-based fibers is reported. The effect of synthesis steps on the final product is discussed. Continuous TiC fibers synthesized have a smooth surface morphology, with average diameter of 148 nm and length in the centimeter range. X-ray diffraction and high-resolution transmission electron microscopy analysis results indicate that the fibers consist of TiC of high purity. Impact of heat treatment on the morphology and chemical and crystalline composition of the product is also investigated. Based on the experimental evidence, it is hypothesized that the carbothermal reduction of calcined electrospun fibers with precoated carbon proceeds through diffusion-limited shrinking core pathway while that of the as-spun fibers follows the reaction-limited solution precipitation mechanism. The TiC nanofibers also show superior sintering properties by increasing theoretical density of hot pressed TiB 2 from 94.5% of theoretical density to 97.9% of theoretical density. When sintered with ceria, it improves the conductivity of the ceria by 18.29 times as compared to 2.94 times by TiC nanoparticles at 800°C. The TiC nanofibers show metallic behavior as well as potential for application as electrochemical double layer capacitor supercapacitors.

show abstract

“…The literature is dominated by high-temperature methods of obtaining titanium carbide. In the three-step method for obtaining TiC proposed by Xie et al [83], the first step involved the preparation of the titanium precursor via the sol-gel method from tetrabutyl titanate in acidic media. The carbon source (phenol-formaldehyde resin) was added to the alcoholic solution of an organometallic salt.…”

Section: Reactive Sintering and Temperature-programmed Reduction (Tpr)mentioning

confidence: 99%

Metal (Mo, W, Ti) Carbide Catalysts: Synthesis and Application as Alternative Catalysts for Dry Reforming of Hydrocarbons—A Review

Czaplicka

Rogala

Wysocka

2021

IJMS

View full text Add to dashboard Cite

Dry reforming of hydrocarbons (DRH) is a pro-environmental method for syngas production. It owes its pro-environmental character to the use of carbon dioxide, which is one of the main greenhouse gases. Currently used nickel catalysts on oxide supports suffer from rapid deactivation due to sintering of active metal particles or the deposition of carbon deposits blocking the flow of gases through the reaction tube. In this view, new alternative catalysts are highly sought after. Transition metal carbides (TMCs) can potentially replace traditional nickel catalysts due to their stability and activity in DR processes. The catalytic activity of carbides results from the synthesis-dependent structural properties of carbides. In this respect, this review presents the most important methods of titanium, molybdenum, and tungsten carbide synthesis and the influence of their properties on activity in catalyzing the reaction of methane with carbon dioxide.

show abstract

Preparation of nano-sized titanium carbide particles via a vacuum carbothermal reduction approach coupled with purification under hydrogen/argon mixed gas

Abstract: Nano-sized titanium carbide particles were successfully synthesized through a process of producing carbon coated titanium precursors, heating these precursors under vacuum conditions, and treating the products in hydrogen/argon mixed gas.

Cited by 27 publications

References 37 publications

Carbon impact on surface morphology and electrical properties of Cu-TiC thin film

Carbon impact on surface morphology and electrical properties of Cu-TiC thin film

Synthesis and Characterization of TiC Nanofibers Obtained via a Modified Carbothermal Process

Metal (Mo, W, Ti) Carbide Catalysts: Synthesis and Application as Alternative Catalysts for Dry Reforming of Hydrocarbons—A Review

Contact Info

Product

Resources

About