scholarly journals Monolithic carbon xerogel with co-continuous hierarchical porosity via one-step, template- and catalyst-free hydrothermal reaction with resorcinol and formaldehyde

RSC Advances ◽  
2019 ◽  
Vol 9 (17) ◽  
pp. 9480-9485
Author(s):  
Hyoung-Ju Yoon ◽  
Jae Young Lee ◽  
Jae-Suk Lee ◽  
Tae-Ho Yoon
Keyword(s):  
Hydrothermal Reaction ◽  
Distilled Water ◽  
Polycondensation Reaction ◽  
Carbon Xerogel ◽  
Resorcinol Formaldehyde ◽  
Hierarchical Porosity ◽  
Catalyst Free ◽  
One Step

Monolithic carbon xerogel (MCX) with co-continuous hierarchical porosity was prepared via a one-step, template- and catalyst-free hydrothermal polycondensation reaction with resorcinol, formaldehyde and distilled water.

scholarly journals Template-free synthesis of monolithic carbon xerogels with hierarchical porosity from resorcinol and formaldehyde via hydrothermal reaction

RSC Advances ◽  
2018 ◽  
Vol 8 (38) ◽  
pp. 21326-21331 ◽  
Author(s):  
G. Cho ◽  
J. Y. Lee ◽  
T. H. Yoon
Keyword(s):  
Porous Carbon ◽  
Hydrothermal Reaction ◽  
Polycondensation Reaction ◽  
Hierarchical Porosity ◽  
Carbon Xerogels ◽  
One Step ◽  
Template Free

Monolithic porous carbon with hierarchical porosity via a one-step template-free hydrothermal polycondensation reaction with resorcinol and formaldehyde.

scholarly journals Hydrothermal synthesis of nanocrystalline hydroxyapatite–graphene nanosheet on Ti-6Al-7Nb: mechanical and in vitro corrosion performance

2021 ◽  
Vol 32 (4) ◽  
Author(s):  
Oktay Yigit ◽  
Burak Dikici ◽  
Niyazi Ozdemir
Keyword(s):  
Hydrothermal Reaction ◽  
Hybrid Coatings ◽  
Stoichiometric Ratio ◽  
Corrosion Performance ◽  
Graphene Nanosheet ◽  
Graphene Layers ◽  
Nanocrystalline Hydroxyapatite ◽  
One Step ◽  
Nano Size

AbstractThe hybrid coatings containing the graphene nano-sheet (GNS) and nano-hydroxyapatite (nHA) phases have been successfully synthesized on Ti6Al7Nb alloys by a one-step hydrothermal method. The hydrothermal reaction was carried out for 24 h at 200 °C. The GNS ratio has been altered as 1, 3, 5 and 7 wt.% in the coatings and, the results have compared with non- GNS containing coatings. The effect of the GNS ratio on the microstructure, hardness, and in vitro corrosion responses has been investigated in detail. The characterizations of the coatings were carried out by SEM, EDS, AFM, XRD and, FTIR. The corrosion behavior of the hybrid coatings was compared in Kokubo’s solution at 37 °C by using potentiodynamic polarization tests. The results showed that the hydroxyapatite phases were deposed on the graphene layers with nano-size nucleation with its Ca/P stoichiometric ratio. The best hydrophilicity (~52°) property has been obtained in nHA/3GNS coatings. In addition, the corrosion rates of coatings increased in the following order: nHA/3GNS < nHA/1GNS < nHA/7GNS < nHA/5GNS < only nHA.

Activation and β-FeOOH modification of sepiolite in one-step hydrothermal reaction and its simulated solar light catalytic reduction of Cr(VI)

2017 ◽  
Vol 135 ◽  
pp. 547-553 ◽  
Author(s):  
Zhihui Xu ◽  
Hongmei Jiang ◽  
Yaqun Yu ◽  
Jiangyan Xu ◽  
Jianru Liang ◽  
...  
Keyword(s):  
Hydrothermal Reaction ◽  
Catalytic Reduction ◽  
Solar Light ◽  
Simulated Solar Light ◽  
One Step

Effect of one-step hydrothermal reaction conditions on the crystal growth of nano-/micro-MoS2

Ionics ◽  
2021 ◽  
Author(s):  
Xiangyun Qiu ◽  
Tao Zhang ◽  
Zuoqiang Dai ◽  
Ru Cao ◽  
Tao Wei
Keyword(s):  
Crystal Growth ◽  
Hydrothermal Reaction ◽  
Reaction Conditions ◽  
One Step

scholarly journals Rational Design for Mn3O4@carbon Foam Nanocomposite with 0D@3D Structure for Boosting Electrochemical Performance

2020 ◽  
Author(s):  
Zhu Yihan ◽  
Dongfeng Wang ◽  
Xuehua Yan ◽  
Yanli Li ◽  
Wending Zhou ◽  
...  
Keyword(s):  
Electrochemical Performance ◽  
Current Density ◽  
Rational Design ◽  
Hydrothermal Reaction ◽  
3D Structure ◽  
Carbon Foam ◽  
Transfer Path ◽  
3D Architecture ◽  
One Step ◽  
Mn3o4 Nanoparticles

Abstract A rational strategy was developed to prepare a nanocomposite with 0D/3D architecture. The composite containing Mn3O4 nanoparticles (0D) and carbon foam (3D) could be applied as an electrode material for supercapacitor by taking advantage of high conductivity of carbon foam (CF) and high pseudocapacitance of Mn3O4 nanoparticles. CF was prepared by a carbonization method using melamine foam, and then Mn3O4 nanoparticles were combined with carbon foam by a one-step hydrothermal method to prepare Mn3O4@CF nanocomposite. The 0D@3D hierarchical structure of Mn3O4@CF nanocomposite using CF as a 3D growing skeleton prevents agglomeration and increases reactive sites of Mn3O4 nanoparticles. In addition, CF as a conductive skeleton shortens the charge transfer path. The synergistic effect between CF and Mn3O4 improves the electrochemical performance of CF. Three Mn3O4@CF composites were prepared by adjusting the mass of the reactants in the processes of hydrothermal reaction. The Mn3O4 nanoparticles are uniformly grown on the CF surface with a diameter of 18 nm. Mn3O4@CF-2 composite has a specific capacitance of 212.8 F/g at a current density of 1 A/g, which is much higher than that of pristine CF (79.1 F/g) and Mn3O4 (112.7 F/g). The cyclic stability of Mn3O4@CF-2 is retained as 86.1% of initial capacitance after 2000 cycles at the current density of 1 A/g. It proves the feasibility of the as-mentioned strategy and broadens the application of carbon foam in supercapacitor.

Resorcinol–formaldehyde carbon xerogel as selective adsorbent of carbon dioxide present on biogas

Adsorption ◽  
2018 ◽  
Vol 24 (2) ◽  
pp. 169-177 ◽  
Author(s):  
Jose F. Vivo-Vilches ◽  
Agustín F. Pérez-Cadenas ◽  
Francisco J. Maldonado-Hódar ◽  
Francisco Carrasco-Marín ◽  
Maria J. Regufe ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Carbon Xerogel ◽  
Resorcinol Formaldehyde ◽  
Selective Adsorbent
Sign in / Sign up

Export Citation Format

Share Document