Adsorption of berberine hydrochloride onto mesoporous carbons with tunable pore size

RSC Advances ◽  
2016 ◽  
Vol 6 (34) ◽  
pp. 28219-28228 ◽  
Author(s):  
Yin Li ◽  
Xiuyang Lu ◽  
Ruiqin Yang ◽  
Weijian Tong ◽  
Lijun Xu ◽  
...  
Keyword(s):  
Pore Size ◽  
Breakthrough Curve ◽  
Mesoporous Carbon ◽  
Carbon Adsorbent ◽  
Mesoporous Carbons ◽  
Berberine Hydrochloride ◽  
Carbon Sample ◽  
Mesoporous Carbon Adsorbent

TEM image of one mesoporous carbon adsorbent and the adsorption breakthrough curve of berberine hydrochloride on the carbon sample.

Effect of diffuse layer and pore shapes in mesoporous carbon supercapacitors

2010 ◽  
Vol 25 (8) ◽  
pp. 1469-1475 ◽  
Author(s):  
Jingsong Huang ◽  
Rui Qiao ◽  
Bobby G. Sumpter ◽  
Vincent Meunier
Keyword(s):  
Pore Size ◽  
Mesoporous Carbon ◽  
Diffuse Layer ◽  
Pore Shape ◽  
Mesoporous Carbons ◽  
Cylindrical Pores ◽  
Theoretical Evolution ◽  
Poisson Boltzmann ◽  
Slit Pores ◽  
Carbon Supercapacitors

In the spirit of the theoretical evolution from the Helmholtz model to the Gouy–Chapman–Stern model for electric double-layer capacitors, we explored the effect of a diffuse layer on the capacitance of mesoporous carbon supercapacitors by solving the Poisson–Boltzmann (PB) equation in mesopores of diameters from 2 to 20 nm. To evaluate the effect of pore shape, both slit and cylindrical pores were considered. We found that the diffuse layer does not affect the capacitance significantly. For slit pores, the area-normalized capacitance is nearly independent of pore size, which is not experimentally observed for template carbons. In comparison, for cylindrical pores, PB simulations produce a trend of slightly increasing area-normalized capacitance with pore size, similar to that depicted by the electric double-cylinder capacitor model proposed earlier. These results indicate that it is appropriate to approximate the pore shape of mesoporous carbons as being cylindrical and the electric double-cylinder capacitor model should be used for mesoporous carbons as a replacement of the traditional Helmholtz model.

scholarly journals The effect of mesoporous carbon modification by nitrogen on its enrichment efficiency of chromate ion: Comparison between N-doped mesoporous carbon and amino grafted mesoporous carbon

2011 ◽  
Vol 17 (4) ◽  
pp. 505-515 ◽  
Author(s):  
S.E. Moradi ◽  
M.J. Baniamerian
Keyword(s):  
Mesoporous Carbon ◽  
High Surface ◽  
High Surface Area ◽  
Carbon Adsorbent ◽  
Textural Properties ◽  
Nitrogen Adsorption ◽  
Polymerization Reaction ◽  
Water Solvent ◽  
Carbon Modification ◽  
Mesoporous Carbon Adsorbent

In the present work, well ordered, N-doped mesoporous carbon (MCN) sorbent with uniform mesoporous wall, high surface area and pore volume has been fabricated using the simple polymerization reaction between ethylene diamine and carbon tetrachloride in mesoporous silica media. The structural order and textural properties of nanostructured materials were studied by XRD, elemental analysis, and nitrogen Adsorption-desorption experiment. Adsorption of Chromate over various porous adsorbents such as mesoporous carbon (MC), N-doped mesoporous carbon (MCN), and amino modified mesoporous carbon (AMC) was studied from solutions with different concentration, temperature and pH in polar (water) solvent. The adsorption isotherms of Chromate were in agreement with Langmuir model, moreover, the uptake capacity of Chromate over MCN was much higher than amino modified mesoporous carbon (AMC) and pristine mesoporous carbon adsorbent.

scholarly journals Removal of F− from Water Using Templated Mesoporous Carbon Modified with Hydrated Zirconium Oxide

2020 ◽  
Vol 6 (1) ◽  
pp. 13
Author(s):  
Tomoya Takada
Keyword(s):  
Pore Size ◽  
Photoelectron Spectroscopy ◽  
Zirconium Oxide ◽  
Mesoporous Carbon ◽  
Zirconium Oxychloride ◽  
Fluoride Anion ◽  
Mesoporous Carbons ◽  
X Ray ◽  
Hydrated Zirconium ◽  
Hydrolysis Of

Three types of MgO-templated mesoporous carbon possessing different specific surface area and pore size distribution were modified with hydrated zirconium oxide (ZrO2·xH2O) to prepare fluoride anion (F−) adsorbents. ZrO2·xH2O was synthesized through the auto-hydrolysis of zirconium oxychloride (ZrOCl2) in water under the coexistence of mesoporous carbon. X-ray diffractometry (XRD) and X-ray photoelectron spectroscopy (XPS) indicated that the mesoporous carbon surfaces were coated with mainly amorphous ZrO2·xH2O. Capabilities of aqueous F− removal of the prepared adsorbents and the unmodified mesoporous carbons were compared. The F− uptake by the prepared adsorbents was larger than that observed using unmodified carbons, indicating that the F− adsorption capacity was improved through the ZrO2·xH2O coating. Moreover, the adsorption capability was found to depend on the pore size of the mesoporous carbons. The F− uptake decreased as pH of F− solution increased. Protonation and deprotonation of ZrO2 were found to affect the F− adsorption.

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