Nitrogen functionalized hierarchical microporous/mesoporous carbon with a high surface area and controllable nitrogen content for enhanced lead(ii) adsorption

RSC Advances ◽  
2016 ◽  
Vol 6 (95) ◽  
pp. 92186-92196 ◽  
Author(s):  
Kunquan Li ◽  
Jinfan Cao ◽  
Hua Li ◽  
Jiamin Liu ◽  
Mingzhou Lu ◽  
...  
Keyword(s):  
Mesoporous Carbon ◽  
Phenol Formaldehyde ◽  
High Surface ◽  
Sol Gel ◽  
High Surface Area ◽  
Phenol Formaldehyde Resin ◽  
Formaldehyde Resin ◽  
Mesoporous Carbons ◽  
Lead Adsorption ◽  
Nitrogen Doped

Nitrogen-doped hierarchical microporous/mesoporous carbons (NHMCs) were conveniently fabricated for enhanced lead adsorption through a sol–gel method and NaOH-assisted activation with a soluble melamine–phenol–formaldehyde resin as a precursor.

Preparation of mesoporous carbon derived from mixtures of phenol-formaldehyde resin and ethylene glycol

2008 ◽  
Vol 62 (21-22) ◽  
pp. 3716-3718 ◽  
Author(s):  
Shunjian Xu ◽  
Guanjun Qiao ◽  
Hongjie Wang ◽  
Dichen Li ◽  
Tianjian Lu
Keyword(s):  
Ethylene Glycol ◽  
Mesoporous Carbon ◽  
Phenol Formaldehyde ◽  
Phenol Formaldehyde Resin ◽  
Formaldehyde Resin

Using phenol–formaldehyde resin as carbon source to synthesize mesoporous carbons of different pore structures

2005 ◽  
Vol 90 (2-3) ◽  
pp. 339-343 ◽  
Author(s):  
Yen-Po Lin ◽  
Hong-Ping Lin ◽  
Dong-Wun Chen ◽  
Hsin-Yu Liu ◽  
Hsisheng Teng ◽  
...  
Keyword(s):  
Carbon Source ◽  
Phenol Formaldehyde ◽  
Phenol Formaldehyde Resin ◽  
Formaldehyde Resin ◽  
Mesoporous Carbons ◽  
Pore Structures

Synthesis and characterization of boron and phosphorus-containing phenol formaldehyde resin-modified polyurethane composites

2020 ◽  
Vol 10 (7) ◽  
pp. 1057-1067
Author(s):  
Kuo-Hui Wu ◽  
Je-Chuang Wang ◽  
Min-Jhong Jheng ◽  
Yin-Chiung Chang
Keyword(s):  
Corrosion Protection ◽  
Phenol Formaldehyde ◽  
Salt Spray ◽  
Sol Gel ◽  
Composite Films ◽  
Phenol Formaldehyde Resin ◽  
Formaldehyde Resin ◽  
Mechanical And Thermal Properties ◽  
Gravimetric Analysis ◽  
Phosphorus Containing

Composite films with polyurethane (PU), phenol formaldehyde resin (PFR) and boron, phosphorus-containing phenol formaldehyde resins (P-PFR and B, P-PFR), were synthesized using sol–gel and copolymerization techniques. These composite films were deposited via spin-coating onto an aluminum alloy (AA) for improve the corrosion protection. The effects of different types of PFR on the structural, thermal and mechanical properties and corrosion resistance of the composites were investigated. The structures and morphologies of the composites were investigated by the gel permeation chromatography (GPC), Fourier transform infrared (FTIR), scanning electronic microscopy (SEM) and atomic force microscopy (AFM). It was shown from the dynamic mechanical analysis (DMA) and thermal gravimetric analysis (TGA) that the mechanical and thermal properties of PU were improved by incorporation of PFR, P-PFR and B, P-PFR. In addition, the PU/PFR composites provided an excellent corrosion protection in comparison with PU according to potentio-dynamic and salt-spray analyses.

Nanoparticles-Based Phenol-Formaldehyde Hybrid Resins

2008 ◽  
Vol 8 (6) ◽  
pp. 3142-3145 ◽  
Author(s):  
Genoveva Hernández-Padrón ◽  
Margarita García-Garduño ◽  
Miguel A. Canseco ◽  
Víctor M. Castaño
Keyword(s):  
Silica Nanoparticles ◽  
Phenol Formaldehyde ◽  
Sol Gel ◽  
Phenol Formaldehyde Resin ◽  
Formaldehyde Resin ◽  
Coating Films ◽  
Corrosion Properties ◽  
Carboxylic Groups ◽  
Novel Material ◽  
New Material

The synthesis, characterization and corrosion properties of a novel material, produced by the reaction of silica nanoparticles with a functionalized Phenol-Formaldehyde Resin (PFR), are presented. Carboxylic groups were attached in situ to the PFR skeleton to produce a functionalized resin (PFR-SA), which is then reacted with sol–gel-prepared silica nanoparticles, yielding a novel hybrid (organic/inorganic) material (PFR-SA-nanoSiO2). This hybrid material was characterized by FT-IR, FT-Raman, TGA, DSC, SEM and corrosion tests, whose results showed significant improvement of the thermal properties in comparison with the PFR coating. In addition, the new material was efficient and durable against corrosion of metals, with the anticorrosive performance of PFR-SA and PFR-SA/nanoSiO2 coating films being superior to those of the original PFR coating.

scholarly journals Structural Colors Based on Amorphous Arrays Comprised Solely of Silica Particles

2020 ◽  
Vol 10 (1) ◽  
pp. 420
Author(s):  
Dae-San Choi ◽  
Ju-Hwan Choi ◽  
Chang-Yull Lee
Keyword(s):  
Phenol Formaldehyde ◽  
Sol Gel ◽  
Silica Particles ◽  
Phenol Formaldehyde Resin ◽  
Formaldehyde Resin ◽  
Structural Colors ◽  
Convection Oven ◽  
Sol Gel Process ◽  
One Step ◽  
The Stöber Method

In this study, structural colors were fabricated by producing an amorphous array with atypical silica particles. The colors were controlled by an array of silica particles with different sizes. In previous research, the process required inducement of the amorphous array, which was complex. Meanwhile, in this paper, we proposed a simple one-step process. First, spherical silica nanoparticles were synthesized using the sol-gel process of the Stöber method. Atypical silica particles that induced an amorphous array were produced by adding a small amount of phenol-formaldehyde resin. Subsequently, the colloidal silica was converted to a powder using a convection oven. The characteristics of the synthesized silica particles were confirmed using a scanning electron microscope (SEM). All the synthesized silica powders obtained structural colors. Finally, the silica powders were dispersed in deionized (DI) water and coated on a glass slide. We confirmed that the silica particles showed different structural colors depending on the size of the particles. We also found that the color was highly independent of the viewing angle.

Highly mesoporous carbon with high capacitance from carbonization of phenol–formaldehyde resin

2009 ◽  
Vol 63 (28) ◽  
pp. 2523-2525 ◽  
Author(s):  
Xianfa Zhang ◽  
Jiawei Wang ◽  
Zijia Yu ◽  
Rongshun Wang ◽  
Haiming Xie
Keyword(s):  
Mesoporous Carbon ◽  
Phenol Formaldehyde ◽  
Phenol Formaldehyde Resin ◽  
Formaldehyde Resin ◽  
High Capacitance

scholarly journals Hydrogen Production through Glycerol Photoreforming on TiO2/Mesoporous Carbon: Influence of the Synthetic Method

Materials ◽  
2020 ◽  
Vol 13 (17) ◽  
pp. 3800
Author(s):  
Juan Carlos Escamilla ◽  
Jesús Hidalgo-Carrillo ◽  
Juan Martín-Gómez ◽  
Rafael C. Estévez-Toledano ◽  
Vicente Montes ◽  
...  
Keyword(s):  
Hydrogen Production ◽  
Mesoporous Carbon ◽  
Catalyst Activity ◽  
High Surface ◽  
Sol Gel ◽  
High Surface Area ◽  
Fold Increase ◽  
Carbon Surface ◽  
Synthetic Method ◽  
Water Addition

This article explores the effect of the synthetic method of titanium dioxide (TiO2)/C composites (physical mixture and the water-assisted/unassisted sol-gel method) on their photocatalytic activity for hydrogen production through glycerol photoreforming. The article demonstrates that, apart from a high surface area of carbon and the previous activation of its surface to favor titania incorporation, the appropriate control of titania formation is crucial. In this sense, even though the amount of incorporated titania was limited by the saturation of carbon surface groups (in our case, ca. 10 wt.% TiO2), the sol-gel process without water addition seemed to be the best method, ensuring the formation of small homogeneously-distributed anatase crystals on mesoporous carbon. In this way, a ca. 110-fold increase in catalyst activity compared to Evonik P25 (expressed as hydrogen micromole per grams of titania) was achieved.

scholarly journals Low-Temperature Sol-Gel Synthesis of Nitrogen-Doped Anatase/Brookite Biphasic Nanoparticles with High Surface Area and Visible-Light Performance

Catalysts ◽  
2017 ◽  
Vol 7 (12) ◽  
pp. 376 ◽  
Author(s):  
Liang Jiang ◽  
Yizhou Li ◽  
Haiyan Yang ◽  
Yepeng Yang ◽  
Jun Liu ◽  
...  
Keyword(s):  
Low Temperature ◽  
Visible Light ◽  
Surface Area ◽  
High Surface ◽  
Sol Gel ◽  
High Surface Area ◽  
Nitrogen Doped ◽  
Sol Gel Synthesis
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