Facile one-step precursor-to-aerogel synthesis of silica-doped alumina aerogels with high specific surface area at elevated temperatures

We have developed a new sol–gel route to synthesise Al2O3–SiO2composite aerogels with different alumina/silica (Al/Si) molar ratios using an inexpensive inorganic salt.

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One-Step Process of NH3 detection Based on Nanofibrous Membranes/QCM System

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.530-531.41 ◽

2014 ◽

Vol 530-531 ◽

pp. 41-44

Author(s):

Li Zhu Chen ◽

Yong Tang Jia ◽

Cheng Cheng Yan ◽

Hui Yu ◽

Feng Chun Dong

Keyword(s):

Specific Surface ◽

Surface Area ◽

Specific Surface Area ◽

High Specific Surface Area ◽

Electrospinning Technique ◽

Carboxyl Content ◽

Step Process ◽

Ammonia Sensing ◽

Combination System ◽

One Step

One-step process of poly(styrene-co-maleic acid)(PS-PMA) nanofibers/QCM combination system was proposed as a novel ammonia detection in this study. Nano-sized PS-PMA fibers were deposited on the QCM electrodes via electrospinning technique directly, which can retain the original high specific surface area of PS-PMA nanofibers, and simplify NH3detection process significantly. Experimental results showed that this new PS-PMA nanofibers/QCM sensor exhibited excellent ammonia sensing performances, such as rapid response and good reproducibility. Moreover, the carboxyl content on the surface of PS-PMA membranes was also determined as well as the specific surface area in order to study the structure-properties relationships.

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Synthesis of a novel Al2O3–SiO2 composite aerogel with high specific surface area at elevated temperatures using inexpensive inorganic salt of aluminum

Ceramics International ◽

10.1016/j.ceramint.2015.09.012 ◽

2016 ◽

Vol 42 (1) ◽

pp. 874-882 ◽

Cited By ~ 52

Author(s):

Xiaodong Wu ◽

Gaofeng Shao ◽

Sheng Cui ◽

Ling Wang ◽

Xiaodong Shen

Keyword(s):

Specific Surface ◽

Surface Area ◽

Specific Surface Area ◽

Elevated Temperatures ◽

Inorganic Salt ◽

High Specific Surface Area ◽

Composite Aerogel

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Rapid preparation process, structure and thermal stability of lanthanum doped alumina aerogels with a high specific surface area

RSC Advances ◽

10.1039/c5ra28053b ◽

2016 ◽

Vol 6 (31) ◽

pp. 26271-26279 ◽

Cited By ~ 10

Author(s):

Jingfeng Yang ◽

Qihua Wang ◽

Tingmei Wang ◽

Yongmin Liang

Keyword(s):

Specific Surface ◽

Surface Area ◽

Specific Surface Area ◽

Sol Gel ◽

Supercritical Drying ◽

High Specific Surface Area ◽

Rapid Preparation ◽

Alumina Aerogels ◽

Process Structure ◽

Thermal Stability Of

In this study, we developed a new and rapid preparation method of alumina aerogels based on the sol–gel method and supercritical drying technique and prepared alumina aerogels with high specific surface area.

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Preparation of heat-resistant alumina aerogels

Journal of Materials Research ◽

10.1557/jmr.1993.2993 ◽

1993 ◽

Vol 8 (11) ◽

pp. 2993-2999 ◽

Cited By ~ 42

Author(s):

Yasuyuki Mizushima ◽

Makoto Hori

Keyword(s):

Specific Surface ◽

Surface Area ◽

Specific Surface Area ◽

Lanthanum Oxide ◽

Barium Oxide ◽

Supercritical Drying ◽

High Specific Surface Area ◽

Drying Methods ◽

Alumina Aerogel ◽

Alumina Aerogels

Alumina aerogels were prepared using supercritical drying methods, and their thermal properties were examined. The effects of several additives to the alumina aerogel and supercritical drying methods were examined in order to improve heat resistance. Silica, phosphoric oxide, barium oxide, lanthanum oxide, and SiC whisker were effective for maintaining a high specific surface area of the alumina aerogel at a temperature over 1200 °C. Silica was found to be the most effective among the additives. The addition of 10 mol % silica resulted in an alumina aerogel with the highest specific surface area, 114.3 m2/g at 1200 °C, and increased the transformation temperature to α alumina. Barium oxide and lanthanum oxide formed smaller crystals within the alumina, compared with those of alumina alone. SiC whisker caused many cracks in the alumina aerogel. When supercritically dried, the alumina aerogel was strengthened by treatment at higher temperature and pressure.

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Preparation of lightweight and high specific surface area ceramsites with sewage sludge

JOURNAL OF SHENZHEN UNIVERSITY SCIENCE AND ENGINEERING ◽

10.3724/sp.j.1249.2014.04374 ◽

2014 ◽

Vol 31 (4) ◽

pp. 374

Author(s):

Ziyi Su ◽

Jiang Yu ◽

Ci Wang ◽

Jianquan Liu ◽

Jin Hu

Keyword(s):

Sewage Sludge ◽

Specific Surface ◽

Surface Area ◽

Specific Surface Area ◽

High Specific Surface Area

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Nanoporous Quasi-High-Entropy Alloy Microspheres

Metals ◽

10.3390/met9030345 ◽

2019 ◽

Vol 9 (3) ◽

pp. 345 ◽

Cited By ~ 3

Author(s):

Lianzan Yang ◽

Yongyan Li ◽

Zhifeng Wang ◽

Weimin Zhao ◽

Chunling Qin

Keyword(s):

Mechanical Properties ◽

Solid Solution ◽

Specific Surface ◽

Surface Area ◽

Specific Surface Area ◽

High Specific Surface Area ◽

High Entropy Alloy ◽

Face Centered Cubic ◽

High Entropy ◽

Hierarchical Porous

High-entropy alloys (HEAs) present excellent mechanical properties. However, the exploitation of chemical properties of HEAs is far less than that of mechanical properties, which is mainly limited by the low specific surface area of HEAs synthesized by traditional methods. Thus, it is vital to develop new routes to fabricate HEAs with novel three-dimensional structures and a high specific surface area. Herein, we develop a facile approach to fabricate nanoporous noble metal quasi-HEA microspheres by melt-spinning and dealloying. The as-obtained nanoporous Cu30Au23Pt22Pd25 quasi-HEA microspheres present a hierarchical porous structure with a high specific surface area of 69.5 m2/g and a multiphase approximatively componential solid solution characteristic with a broad single-group face-centered cubic XRD pattern, which is different from the traditional single-phase or two-phase solid solution HEAs. To differentiate, these are named quasi-HEAs. The synthetic strategy proposed in this paper opens the door for the synthesis of porous quasi-HEAs related materials, and is expected to promote further applications of quasi-HEAs in various chemical fields.

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KCl-assisted activation: Moringa oleifera branch-derived porous carbon for high performance supercapacitor

New Journal of Chemistry ◽

10.1039/d1nj00046b ◽

2021 ◽

Vol 45 (12) ◽

pp. 5712-5719

Author(s):

Yongxiang Zhang ◽

Peifeng Yu ◽

Mingtao Zheng ◽

Yong Xiao ◽

Hang Hu ◽

...

Keyword(s):

Specific Surface ◽

Surface Area ◽

Specific Surface Area ◽

Porous Carbon ◽

High Performance ◽

Moringa Oleifera ◽

High Specific Surface Area ◽

Porous Carbons

Porous carbons with a high specific surface area (2314–3470 m2 g−1) are prepared via a novel KCl-assisted activation strategy for high-performance supercapacitor.

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