scholarly journals Mesostructuring layered materials: self-supported mesoporous layered double hydroxide nanotubes

Nanoscale ◽  
2021 ◽  
Author(s):  
Alysson Ferreira Morais ◽  
Dimy Nanclares ◽  
Ivan Guide Nunes da Silva ◽  
Alfredo Duarte ◽  
Fernando Assis Garcia ◽  
...  
Keyword(s):  
Specific Surface ◽  
Surface Area ◽  
Layered Double Hydroxide ◽  
Specific Surface Area ◽  
Functional Materials ◽  
Layered Materials ◽  
High Specific Surface Area ◽  
Hierarchical Porosity ◽  
Soft Templating ◽  
Double Hydroxide

Synthesis of layered materials exhibiting hierarchical porosity remains challenging, but nevertheless worthwhile because it turns such solids into functional materials with high specific surface area. Using a soft-templating strategy in...

Synthesis of high-specific-surface-area Li-Al mixed metal oxide: Through nanoseed-assisted growth of layered double hydroxide

2021 ◽  
Vol 203 ◽  
pp. 106006
Author(s):  
Masanori Takemoto ◽  
Yasuaki Tokudome ◽  
Hidenobu Murata ◽  
Kenji Okada ◽  
Masahide Takahashi ◽  
...  
Keyword(s):  
Metal Oxide ◽  
Specific Surface ◽  
Surface Area ◽  
Layered Double Hydroxide ◽  
Specific Surface Area ◽  
High Specific Surface Area ◽  
Mixed Metal Oxide ◽  
Mixed Metal ◽  
Double Hydroxide

Hierarchical flower-like Ni–Co layered double hydroxide nanostructures: synthesis and super performance

2018 ◽  
Vol 5 (12) ◽  
pp. 3033-3041 ◽  
Author(s):  
Tao Dong ◽  
Xiao Zhang ◽  
Meng Li ◽  
Peng Wang ◽  
Ping Yang
Keyword(s):  
Specific Surface ◽  
Surface Area ◽  
Layered Double Hydroxide ◽  
Specific Surface Area ◽  
Three Dimensional ◽  
Interlayer Spacing ◽  
Large Specific Surface Area ◽  
Anionic Dyes ◽  
Double Hydroxide

Three-dimensional hierarchical flower-like Ni–Co LDHs have been prepared with a large specific surface area and expanded interlayer spacing as an adsorbent for removing anionic dyes and as an electrode for supercapacitors.

scholarly journals Mixed Metal Oxide by Calcination of Layered Double Hydroxide: Parameters Affecting Specific Surface Area

Nanomaterials ◽  
2021 ◽  
Vol 11 (5) ◽  
pp. 1153
Author(s):  
Su-Bin Lee ◽  
Eun-Hye Ko ◽  
Joo Y. Park ◽  
Jae-Min Oh
Keyword(s):  
Metal Oxide ◽  
Specific Surface ◽  
Surface Area ◽  
Calcination Temperature ◽  
Layered Double Hydroxide ◽  
Specific Surface Area ◽  
High Performance ◽  
Mixed Metal Oxide ◽  
Mixed Metal ◽  
Double Hydroxide

Mixed metal oxide (MMO) is one of the widely utilized ceramic materials in various industries. In order to obtain high performance, the specific surface area of MMO should be controlled. Calcination of layered double hydroxide (LDH) is a versatile way to prepare MMO with homogeneous metal distribution and well-developed porosity. Although researchers found that the specific surface area of LDH-originated MMO was relatively high, it had not been systematically investigated how the surface area is controlled under a certain parameter. In this review, we summarized LDH-originated MMO with various starting composition, calcination temperature, and pore developing agent in terms of specific surface area and porosity. Briefly, it was represented that MMOs with Mg-Al components generally had higher specific surface area than Mg-Fe or Zn-Al components. Calcination temperature in the range 300–600 °C resulted in the high specific surface area, while upper or lower temperature reduced the values. Pore developing agent did not result in dramatic increase in MMO; however, the pore size distribution became narrower in the presence of pore developing agents.

Adsorptive performance for methylene blue of magnetic Ni@activated carbon nanocomposites

2015 ◽  
Vol 08 (02) ◽  
pp. 1550024 ◽  
Author(s):  
Panfeng Wang ◽  
Jingcai Xu ◽  
Beibei Zhang ◽  
Jing Li ◽  
Hongxiao Jin ◽  
...  
Keyword(s):  
Methylene Blue ◽  
Activated Carbon ◽  
Specific Surface ◽  
Surface Area ◽  
Specific Surface Area ◽  
Functional Materials ◽  
High Specific Surface Area ◽  
Adsorptive Capacity ◽  
Ni Nanoparticles ◽  
Volume Decrease

Owing to the unique microporous structure and high specific surface area, activated carbon (AC) can act as a good candidate for functional materials. In this paper, Ni @AC magnetic nanocomposites with excellent magnetic response are synthesized by the hydrothermal method. All Ni @AC nanocomposites present ferromagnetism and Ni nanoparticles exist in the pores of AC. The saturation magnetization (Ms) increases with the increasing content of Ni , while the specific surface area and pore volume decrease. The S-50 sample possesses the parameters of the specific surface area of 1156.8 m2 ⋅ g-1 and Ms of 3.5 emu/g. Furthermore, the methylene blue (MB) removal analysis indicates that 99% MB can be adsorbed in 50 min. The as-prepared Ni @AC nanocomposites present good adsorptive capacity of MB and can be separated easily from water by magnetic separation technique.

scholarly journals Nanoporous Quasi-High-Entropy Alloy Microspheres

Metals ◽  
2019 ◽  
Vol 9 (3) ◽  
pp. 345 ◽  
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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