mesoporous sic sol gel process high surface

High surface area mesoporous SiC synthesized via …

High surface area mesoporous SiC synthesized via nanocasting and carbothermal reduction process AN-HUI LU 1,2, WOLFGANG SCHMIDT 1, WOLFGANG KIEFER 2 & FERDI SCHÜTH 1 Journal of Materials Science volume 40, pages 5091–5093(2005)

High surface area mesoporous SiC synthesized via …

High surface area mesoporous SiC synthesized via nanocasting and carbothermal reduction process AN-HUI LU 1,2, WOLFGANG SCHMIDT 1, WOLFGANG KIEFER 2 & FERDI SCHÜTH 1 Journal of Materials Science volume 40, pages 5091–5093(2005)

Simple and green synthesis of mesoporous nanofibers decorated …

2020/4/29· bath at 30 C to form the silica sol solution. Lastly, 2.5 g of the 10 wt% PAA was added to the silica sol solution and held in a water bath at 50 C for 60min to obtain a homogeneous PAA/SiO 2 gel. The sol-gel solution was then poured into a 10 ml syringe to be

Synthesis of Mesoporous Carbon‐Bonded TiC/SiC …

2011/6/14· Mesosporous carbon‐bonded titanium‐carbide/silicon‐carbide (C‐TiC/SiC) ceramics with a high specific surface area (221 m 2 /g), ultra fine grains (10–50 nm), and high crystallinity were synthesized from direct carbothermal reduction (1100 –1450 C) of monolithic

High Surface Area Silicon Carbide Whiskers and …

2004/9/11· We report here the formation of high surface area silicon carbide materials comprising whiskers and nanotubes via a synthesis route, which utilizes mesoporous silica as sacial solid template. The silicon carbide materials are obtained via carbothermal reduction of mesoporous silica/carbon (i.e., SBA-15/sucrose) composites.

Sol–Gel Synthesis of Spherical Mesoporous High-Entropy …

Herein, a wet-chemistry sol–gel strategy is demonstrated for the synthesis of spherical mesoporous HEOs (e.g., Ni–Co–Cr–Fe–Mn oxide) with high specific surface area (42–143 m2/g), large pore size (5.5–8.3 nm), unique spherical morphology (∼55 nm), and

Fast Sol−Gel Synthetic Route to High-Surface-Area …

1997/9/16· A fast sol−gel synthetic route for obtaining alumina aerogels has been developed by modifying the tranditional method under appropriately controlled conditions. The highly mesoporous alumina aerogel prepared by our new sol−gel synthesis method and CO2 supercritical drying had a surface area in excess of 700 m2/g and high thermal stability.

Periodic Mesoporous Organosilica Nanocubes with …

2016/2/12· By tuning the porous feature and polymerization degree, the surface areas of the obtained PMO nanocubes can reach as high as 2370 m2/g, which is …

Synthesis of electroactive mesoporous gold–organosilica …

Synthesis of electroactive mesoporous gold–organosilica nanocomposite materials via a sol–gel process with non-surfactant templates and the electroanalysis of ascorbic acid† Chang-Jian Weng , a Po-Hsuan Hsu , a Sheng-Chieh Hsu , a Chi-Hao Chang , a Wei-I. Hung , …

Synthesis and Functionalization of a Mesoporous Silica Nanoparticle Based on the Solâ•fiGel Process …

Synthesis and Functionalization of a Mesoporous Silica Nanoparticle. Based on the Sol–Gel Process and Appliions in Controlled Release. Abstract. Mesoporous silica nanoparticles (MSNs) are introduced as chemically and thermally stable nanomaterials. with well-defined and …

Synthesis and Surface Chemistry of Spherical …

2004/1/23· Abstract. Novel mesoporous organic−inorganic spherical hybrid particles are described that contain a 3-hydroxypropyl organic functionality which is integral to the pore surface. The 3-hydroxypropyl hybrid particle is synthesized in three steps starting from a 4:1 (mol/mol) mixture of tetraethoxysilane and [3- (methacryloxy)propyl]trimethoxysilane,

Sol–gel synthesis of SiC–TiO2 nanoparticles for …

2007/1/9· This site uses cookies. By continuing to use this site you agree to our use of cookies. To find out more, see our Privacy and Cookies policy.

Simple and green synthesis of mesoporous nanofibers decorated …

2020/4/29· bath at 30 C to form the silica sol solution. Lastly, 2.5 g of the 10 wt% PAA was added to the silica sol solution and held in a water bath at 50 C for 60min to obtain a homogeneous PAA/SiO 2 gel. The sol-gel solution was then poured into a 10 ml syringe to be

Acetic Anhydride as an Oxygen Donor in the …

2019/1/11· An original, halide-free non-hydrolytic sol–gel route to mesoporous anatase TiO 2 with hierarchical porosity and high specific surface area is reported. This route is based on the reaction at 200 °C of titanium(IV) isopropoxide with acetic anhydride, in the absence of a alyst or solvent.

(PDF) High surface area mesoporous SiC synthesized via …

The synthesis of high surface area mesoporous SiC through nanocasting and carbothermal reduction process was presented.

Mesoporous Anatase TiO2 Beads with High Surface …

2009/6/2· Mesoporous anatase TiO 2 beads with high surface areas and controllable pore sizes are prepared by using a coined sol–gel and solvothermal process. Dye‐sensitized solar cells made from these mesoporous beads gave a total power conversion efficiency of 7.20% under AM 1.5 sunlight, higher than that obtained using Degussa P25 films of similar thickness (5.66%).

Mesoporous Anatase TiO2 Beads with High Surface …

2009/6/2· Mesoporous anatase TiO 2 beads with high surface areas and controllable pore sizes are prepared by using a coined sol–gel and solvothermal process. Dye‐sensitized solar cells made from these mesoporous beads gave a total power conversion efficiency of 7.20% under AM 1.5 sunlight, higher than that obtained using Degussa P25 films of similar thickness (5.66%).

A facile route to prepare high surface area mesoporous …

A simple and economic process for the preparation of mesoporous SiC ceramics with high BET surface area was developed by using commercially available sources. Low viscosity polycarbosilane as a SiC precursor was infiltrated into a sacial silica sphere template, which was precipitated by the centrifugati

Mesporous 3 C -SiC Hollow Fibers | Scientific Reports

2017/5/15· The as-prepared mesoporous hollow fibers could have some potential appliions in photoalysts, alyst supports and supercapacitor, owing to their light weight, high surface …

Mesporous 3 C -SiC Hollow Fibers | Scientific Reports

2017/5/15· The as-prepared mesoporous hollow fibers could have some potential appliions in photoalysts, alyst supports and supercapacitor, owing to their light weight, high surface …

Formation of SiC via Carbothermal Reduction of a …

Such a porous SiC with a high surface area can be synthesized from a mesoporous silie precursor with a pore-size of 2-50 nm [2,3].

L-Ascorbic Acid-g-Polyaniline Mesoporous Silica …

In the present study, mesoporous silica nanoparticles (MSNs) synthesized through sol-gel process and calcined at 600 C were further surface functionalized by a copolymer chain of L-ascorbic acid (AS) and polyaniline (PAni) by in situ free radical oxidative

Thermally stable Pt/mesoporous silica core–shell …

2008/11/23· The [email protected] 2 core–shell nanoparticles were prepared by polymerizing the silica layer around the surface of Pt nanoparticles using a sol–gel process 33,34,35,44,45,46.

Mesoporous silica nanoparticles prepared by different …

2021/2/22· Abstract. In the current investigation, mesoporous silica nanoparticles were obtained by various techniques, namely sol–gel (S1), micro‐emulsion (S2) and hydrothermal synthesis (S3). The effect of those methods on the final features of the obtained mesoporous silica nanoparticles was studied. The obtained nanoparticles were investigated by TEM, BET

Synthesis of mesoporous La2Zr2O7 with high surface …

2016/11/1· Thus, one can obtain mesoporous LZO with high surface area by coining the epoxide-mediated sol-gel process and solvothermal treatment. For example, Inoue et al. [36] prepared nanocrystalline tetragonal ZrO 2 particles with diameter of 4–10 nm and surface area of 90–160 m 2 /g.

Control of mesoporous structure of aerogels derived …

2002/10/1· The microstructure of the organic C(m)F aerogels can be controlled and tailored effectively by varying synthesis conditions during the initial sol-gel process. C(m)F organic aerogels with specific surface area as high as 627 m(2)/g and corresponding pore volume 2.06 ml/g have been obtained with a dominant pore size of 30 nm.

Synthesis of electroactive mesoporous gold–organosilica …

Synthesis of electroactive mesoporous gold–organosilica nanocomposite materials via a sol–gel process with non-surfactant templates and the electroanalysis of ascorbic acid† Chang-Jian Weng , a Po-Hsuan Hsu , a Sheng-Chieh Hsu , a Chi-Hao Chang , a Wei-I. Hung , …

Synthesis of High Surface Area Mesoporous Silica …

2014/2/5· In this study, mesoporous silica powders are synthesized by the sol-gel method. The sol-gel method obtains a high purity silica powder; however, the process yields a low percentage. Past syntheses of SiO 2 powder precursors are expensive, but this study needs to find a replacement precursor for low cost alternatives.