Synthesis and Structural Characterization of Mg/Al Hydrotalcite-Like Compounds

2012 ◽  
Vol 549 ◽  
pp. 353-357 ◽  
Author(s):  
Yan Guo ◽  
Wei Jun Liu ◽  
Shu Hua Zhang ◽  
Si Yuan Yang ◽  
Kai Fei Zhang ◽  
...  
Keyword(s):  
Ir Spectra ◽  
Structural Characterization ◽  
Pore Volume ◽  
Positive Charge ◽  
High Surface ◽  
High Surface Area ◽  
Total Pore Volume ◽  
Hydroxyl Groups ◽  
Ft Ir

Hydrotalcites consist of Brucite-like layers with positive charge and anionic compounds in the interlayer to form neutral materials. The general formula of hydrotalcite compounds (HTLc) was Mg-A1-HTLc. All samples were characterized by XRD, FT-IR spectra and TG. After calcination, the transformation of hydrotalcite structure can be characterized by vibration infrared bands corresponding to hydroxyl groups, octahedral layers and interlayer species. Moreover, the calcined samples show a relatively high surface area and total pore volume.

Synthesis and Characterization of ZrO2/Graphene Nanocomposite Materials

2012 ◽  
Vol 531 ◽  
pp. 161-164 ◽  
Author(s):  
Zong Hua Wang ◽  
Fu Qiang Zhu ◽  
Jan Fei Xia ◽  
Fei Fei Zhang ◽  
Yan Zhi Xia ◽  
...  
Keyword(s):  
High Surface ◽  
High Surface Area ◽  
Nitrogen Adsorption ◽  
X Ray Diffraction ◽  
Simple Method ◽  
Transmission Electron ◽  
Ft Ir ◽  
Graphene Nanocomposite ◽  
Adsorption Desorption

Zirconia/graphene (ZrO2/graphene) nanocomposite has been successfully synthesized by a simple method. The as-prepared nanocomposite was characterized using transmission electron microscopy (TEM), FT-IR spectroscopy, power X-ray diffraction (XRD) and nitrogen adsorption-desorption. It was found that tetragonal ZrO2was uniformly deposited on graphene, which resulted in the formation of two-dimensional nanocomposite, it showed a high surface area of 165 m2/g.

scholarly journals Preparation and Characterization of SnO2 / AC as a Novel High Surface Area Nanocatalyst

2021 ◽  
Author(s):  
Abdul Rahman Y. Wahoud ◽  
Salim F. Bamsaoud ◽  
Mohammed A. Al-Haiqi
Keyword(s):  
Surface Area ◽  
Pore Volume ◽  
Tin Dioxide ◽  
Design Method ◽  
Uv Spectroscopy ◽  
High Surface ◽  
High Surface Area ◽  
Dye Adsorption ◽  
Total Pore Volume ◽  
Solution Temperature

A new solid nanoparticle sorbent (SnO2 / AC) could serve as high surface area and inexpensive nanocatalyst was prepared. Many properties were characterized by SEM and UV spectroscopy. High surface area, large micro pore volume and total pore volume were found to be 571 m2 g−1, 0.4785 cm3 g−1 and 0.7267 cm3 g−1 respectively even with very high loaded ratio (60 %) of tin dioxide to Activated Carbon (SnO2 / AC). Taguchi factorial design method was used to get the maximum MB dye adsorption on the surface of SnO2 / AC nanoparticle sorbent. Contact time (60 min), initial dye concentration (5 mM) and solution temperature (293 K) were found to be the best conditions for the more effective absorption process.

FT-IR Characterization of High Surface Area Silicon Nitride and Carbide

1989 ◽  
pp. 173-184 ◽  
Author(s):  
Gianguido Ramis ◽  
Guido Busca ◽  
Vincenzo Lorenzelli ◽  
Marie Isabelle Baraton ◽  
Thérèse Merle-Mejean ◽  
...  
Keyword(s):  
Silicon Nitride ◽  
Surface Area ◽  
High Surface ◽  
High Surface Area ◽  
Ft Ir

Preparation and Characterization of Magnetic Coal-Based Activated Carbon in the Presence of Fe3O4

2011 ◽  
Vol 393-395 ◽  
pp. 1355-1358 ◽  
Author(s):  
Jun Zhang
Keyword(s):  
Magnetic Properties ◽  
Activated Carbon ◽  
Surface Area ◽  
Pore Volume ◽  
High Surface ◽  
High Surface Area ◽  
Vibrating Sample Magnetometer ◽  
N2 Adsorption ◽  
Magnetic Activated Carbon

Magnetic coal-based activated carbon was prepared from Taixi anthracitic coal in the presence of magnetite (Fe3O4). The magnetic activated carbon samples were characterized by N2 adsorption, XRD, FTIR and vibrating sample magnetometer (VSM). It was found that the magnetic activated carbon had a high surface area of 993.5 m2/g with 4% Fe3O4 and a saturation magnetization of 2.4158 emu/g for magnetic separability. The results showed that the magnetic properties of MAC are provided by Fe3O4 and Fe. In the presence of Fe3O4, the rate of carbonization and activation increase to form a large surface area and a high pore volume. Moreover, the addition of Fe3O4 can greatly promote the number of both micro-pores and meso-pores in activated carbon.

Mesoporous N-doped graphene prepared by a soft-template method with high performance in Li–S batteries

Nanoscale ◽  
2019 ◽  
Vol 11 (15) ◽  
pp. 7440-7446 ◽  
Author(s):  
Tianyu Tang ◽  
Teng Zhang ◽  
Wei Li ◽  
Xiaoxiao Huang ◽  
Xiaobai Wang ◽  
...  
Keyword(s):  
Uniform Distribution ◽  
Pore Volume ◽  
High Performance ◽  
High Surface ◽  
High Surface Area ◽  
Total Pore Volume ◽  
Soft Template ◽  
Template Method ◽  
Doped Graphene ◽  
Improved Performance

High surface area and large total pore volume facilitate the uniform distribution of sulfur in an Li–S battery, achieving improved performance.

scholarly journals Guanidinylated SBA-15/Fe3O4 mesoporous nanocomposite as an efficient catalyst for the synthesis of pyranopyrazole derivatives

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Fereshte Hassanzadeh-Afruzi ◽  
Somayeh Asgharnasl ◽  
Sara Mehraeen ◽  
Zeinab Amiri-Khamakani ◽  
Ali Maleki
Keyword(s):  
Catalytic Activity ◽  
High Surface ◽  
High Surface Area ◽  
Lewis Acid Site ◽  
Efficient Catalyst ◽  
Physicochemical Features ◽  
Ft Ir ◽  
Post Synthesis

AbstractIn this study, a novel mesoporous nanocomposite was fabricated in several steps. In this regard, SBA-15 was prepared by the hydrothermal method, next it was magnetized by in-situ preparation of Fe3O4 MNPs. After that, the as-prepared SBA-15/Fe3O4 functionalized with 3-minopropyltriethoxysilane (APTES) via post-synthesis approach. Then, the guanidinylated SBA-15/Fe3O4 was obtained by nucleophilic addition of APTES@SBA-15/Fe3O4 to cyanimide. The prepared nanocomposite exhibited excellent catalytic activity in the synthesis of dihydropyrano[2,3-c]pyrazole derivatives which can be related to its physicochemical features such as strong basic sites (presented in guanidine group), Lewis acid site (presented in Fe3O4), high porous structure, and high surface area. The characterization of the prepared mesoporous nanocomposite was well accomplished by different techniques such as FT-IR, EDX, FESEM, TEM, VSM, TGA, XRD and BET. Furthermore, the magnetic catalyst was reused at least six consequent runs without considerable reduction in its catalytic activity.

Characterization of Aminoalky Cellulose Adsorbent

2011 ◽  
Vol 287-290 ◽  
pp. 1365-1368
Author(s):  
Heng Zhu ◽  
Xiao Yan Lin ◽  
Xue Gang Luo ◽  
Ying Li
Keyword(s):  
Heavy Metal ◽  
Crystalline Phase ◽  
Pore Volume ◽  
Pore Diameter ◽  
Total Pore Volume ◽  
Decomposition Temperature ◽  
Ft Ir ◽  
The Mean ◽  
Cellulose Adsorbent

Aminoalky cellulose is a white, solid cellulose derivative, which could be used adsorbent in order to remove TNT, heavy metal and dyes due to the large of amino. In this paper, the preparation of aminoalky cellulose was reported, and the aminoalky cellulose was characterized by FT-IR, XRD, SEM and TG. The results showed that aminoalky cellulose was successfully prepared, an amorphous phase and a crystalline phase are included in the AmAC, and the decomposition temperature of AmAC was 288.23°C. Some surface properties of AmAC was measured, and the mean pore diameter and total pore volume of the AmAC is about 260.409 Å and 0.363827 cm3 g-1, respectively.

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