The application of activated carbon modified by ozone treatment for energy storage

Lota, Grzegorz; Krawczyk, Piotr; Lota, Katarzyna; Sierczyńska, Agnieszka; Kolanowski, Łukasz; Baraniak, Marek; Buchwald, Tomasz

doi:10.1007/s10008-016-3293-5

Cited by 63 publications

(38 citation statements)

References 45 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The sample subjected to the electric field shows a shift of the G-band. A similar result was observed by Lota et al, who exposed an activated carbon to ozone [54]. This trend may be explained by the loss of C bonded in rings and the formation of chains due to the incorporation of oxygen and nitrogen atoms, which is consistent with the previous FTIR and Bohem titration results.…”

Section: Raman Spectroscopysupporting

confidence: 91%

Electroadsorptive Removal of Gaseous Pollutants

2019

View full text Add to dashboard Cite

Adsorption is a consequence of surface energy distribution, and the existence of electrostatic bonding suggests that the presence of an external electric field may affect adsorbate/adsorbent interactions. Nevertheless, this aspect has been poorly studied in the literature, except under non-thermal plasma or corona discharge conditions. After having demonstrated in our previous work that the adsorption kinetics of gaseous organic compounds can be enhanced by the presence of an external applied electric field, in this study, we focus on the influence of the electric field on adsorbent and adsorptive interactions. By using a commercially available activated carbon cloth, in addition to increasing the adsorbent mass transfer coefficient by virtue of the increasing intensity of the applied electric field, the results suggest that adsorbent morphology is only influenced by the formation of new surface functional groups. Moreover, enhanced adsorption kinetics and capacity may result from the electrohydrodynamic force induced by the movement of charged and neutral particles towards the adsorbent, as confirmed by the reversibility of the process. Such enhancement results in a negligible increase, of about 3%, in adsorption capacity (i.e., from 91 mmol m−2 Pa−1 for only adsorption to 94 mmol m−2 Pa−1 in the presence of the applied electric field), but also in a dramatic doubling of adsorption kinetics (i.e., from 0.09 min−1 for only adsorption to 0.19 min−1 in the presence of the applied electric field). In reality, the application of an electric field to an activated carbon cloth leads to faster adsorption kinetics, without substantially altering its adsorption capacity.

show abstract

Section: Raman Spectroscopysupporting

confidence: 91%

Electroadsorptive Removal of Gaseous Pollutants

2019

View full text Add to dashboard Cite

show abstract

“…Materials 2020, 13, 400 10 of 18 [40]. D band and G band are also visible in Raman spectrum of all the study composites and they are indicated in Figure 5.…”

Section: Physical and Chemical Characterization Of Carbon Fiber-silicmentioning

confidence: 76%

“…The first one (D band) is related to the breathing modes of sp 2 atoms in rings and corresponds to the structural defects or edges in the carbon structure. The second one (G band) is associated with the bond stretching of all pairs of sp 2 atoms in both rings and chains [40]. D band and G band are also visible in Raman spectrum of all the study composites and they are indicated in Figure 5.…”

Section: Physical and Chemical Characterization Of Carbon Fiber-silicmentioning

confidence: 79%

Carbon Fiber and Nickel Coated Carbon Fiber–Silica Aerogel Nanocomposite as Low-Frequency Microwave Absorbing Materials

et al. 2020

Self Cite

View full text Add to dashboard Cite

Silica aerogel-based materials exhibit a great potential for application in many industrial applications due to their unique porous structure. In the framework of this study, carbon fiber and nickel coated carbon fiber–silica aerogel nanocomposites were proposed as effective electromagnetic shielding material. Herein, the initial oxidation of the surface of carbon fibers allowed the deposition of a durable Ni metallic nanolayer. The fibers prepared in this way were then introduced into a silica aerogel structure, which resulted in obtaining two nanocomposites that differed in terms of fiber volume content (10% and 15%). In addition, analogous systems containing fibers without a metallic nanolayer were studied. The conducted research indicated that carbon fibers with a Ni nanolayer present in the silica aerogel structure negatively affected the structural properties of the composite, but were characterized by two-times higher electrical conductivity of the composite. This was because the nickel nanolayer effectively blocked the binding of the fiber surface to the silica skeleton, which resulted in an increase of the density of the composite and a reduction in the specific surface area. The thermal stability of the material also deteriorated. Nevertheless, a very high electromagnetic radiation absorption capacity between 40 and 56 dB in the frequency range from 8 to 18 GHz was obtained.

show abstract

“…The content of functional groups on the AC surface is mainly affected by the precursor, the activation process, and thermal and chemical treatment . In addition, the species and content of functional groups can be modified by physical, chemical, and biological modification processes , , .…”

Section: Introductionmentioning

confidence: 99%

Modification of Activated Carbon by the Basic Ionic Liquid [Bmim]OH: A Feasibility Study

Yan

Shang

et al. 2018

Chem Eng & Technol

View full text Add to dashboard Cite

The large amount of dye wastewater requires efficient techniques, e.g., adsorption by activated carbon (AC), for removal of dyes to decrease water pollution. AC was modified by the basic ionic liquid 1‐butyl‐3‐methylimidazolium hydroxide. The surface functional groups of AC changed evidently as detected by Fourier transform infrared spectroscopy and Boehm titration. To evaluate the influence of functional group change on adsorption performance, AC and modified activated carbon (MAC) were employed to remove methylene blue. The results indicated an increase of adsorbance with lapse of contact time. The adsorption capability of AC was distinctly higher than that of MAC. From kinetic studies it follows that the pseudo‐second‐order kinetic model can well describe the adsorption process.

show abstract

The application of activated carbon modified by ozone treatment for energy storage

Cited by 63 publications

References 45 publications

Electroadsorptive Removal of Gaseous Pollutants

Electroadsorptive Removal of Gaseous Pollutants

Carbon Fiber and Nickel Coated Carbon Fiber–Silica Aerogel Nanocomposite as Low-Frequency Microwave Absorbing Materials

Modification of Activated Carbon by the Basic Ionic Liquid [Bmim]OH: A Feasibility Study

Contact Info

Product

Resources

About