Nano Building Blocks via Iodination of [PhSiO1.5]n, Forming [p-I-C6H4SiO1.5]n(n= 8, 10, 12), and a New Route to High-Surface-Area, Thermally Stable, Microporous Materials via Thermal Elimination of I2

2010 ◽  
Vol 132 (29) ◽  
pp. 10171-10183 ◽  
Author(s):  
M. F. Roll ◽  
J. W. Kampf ◽  
Y. Kim ◽  
E. Yi ◽  
R. M. Laine
Keyword(s):  
Surface Area ◽  
High Surface ◽  
High Surface Area ◽  
Building Blocks ◽  
Microporous Materials ◽  
Thermally Stable ◽  
Thermal Elimination

Synthesis and Characterization of Flower-Like Co–La Oxide Micro/Nano Materials

2014 ◽  
Vol 1058 ◽  
pp. 25-29
Author(s):  
Shi Jing Lin ◽  
Wu Tong Du ◽  
Ting Ting Ding ◽  
Yu Zhao ◽  
You Zhao ◽  
...  
Keyword(s):  
Ethylene Glycol ◽  
Surface Area ◽  
High Surface ◽  
High Surface Area ◽  
Building Blocks ◽  
Cobalt Nitrate ◽  
Element Distribution ◽  
Bet Surface Area ◽  
Ammonium Bromide ◽  
Micrometer Scale

Flower-like Co–La oxide micro/nanomaterials have been synthesized via an ethylene-glycol-mediated process, under the condition of that the mole ratio of lanthanum nitrate (La (NO3)3·6H2O) and cobalt nitrate (Co (NO3)2·6H2O) was 1:1 (based on the amount of Co (NO3)2·6H2O 0.002 mol), the dosage of urea was 2.2 g, the dosage of tetra-butyl ammonium bromide (TBAB) was 6.0 g, with magnetic stirring heating under 170 °C for 60 minutes in the 150mL ethylene glycol, the prepared precursors of Co–La oxides have regular flower-like morphology, in addition, the amount of TBAB and urea plays a significant role on the synthesis of the precursors. The flower-like Co–La oxides micro/nanomaterials were prepared after the precursors were calcinated in the muffle furnace at 800 °C for 2 h, the morphology, crystal properties and element distribution of the products were investigated by the analysis of SEM-EDX, XRD and BET, etc. The structures of these products with regular flower-like morphology are on the micrometer scale, which are hierarchically composed of nanosized building blocks, with highly polycrystalline nature, and the Brunauer–Emmett–Teller (BET) surface area of 68.5 m2/g. Therefore, those micro/nanomaterials have been developed as promising catalytic materials for their not only keeping the high surface area of nanomaterials, but effectively inhibiting aggregation.

A novel mesoporous hydrogen-bonded organic framework with high porosity and stability

2020 ◽  
Vol 56 (1) ◽  
pp. 66-69 ◽  
Author(s):  
Bin Wang ◽  
Xiu-Liang Lv ◽  
Jie Lv ◽  
Li Ma ◽  
Rui-Biao Lin ◽  
...  
Keyword(s):  
Surface Area ◽  
Pore Volume ◽  
High Surface ◽  
High Surface Area ◽  
High Porosity ◽  
Thermally Stable ◽  
Large Pore ◽  
Large Pore Volume ◽  
Organic Framework ◽  
Hydrogen Bonded

A highly chemically and thermally stable mesoporous hydrogen-bonded organic framework with a high surface area and a large pore volume has been rationally designed and constructed.

scholarly journals Synthesis of thermally stable, high surface area anatase–alumina mixed oxides

2000 ◽  
Vol 43 (5-6) ◽  
pp. 286-290 ◽  
Author(s):  
S Rajesh Kumar ◽  
Suresh C Pillai ◽  
U.S Hareesh ◽  
P Mukundan ◽  
K.G.K Warrier
Keyword(s):  
Surface Area ◽  
Mixed Oxides ◽  
High Surface ◽  
High Surface Area ◽  
Thermally Stable

scholarly journals Facile Hydrothermal Synthesis and Supercapacitor Performance of Mesoporous Necklace-Type ZnCo2O4 Nanowires

Catalysts ◽  
2021 ◽  
Vol 11 (12) ◽  
pp. 1516
Author(s):  
John Anthuvan Rajesh ◽  
Kwang-Soon Ahn
Keyword(s):  
Surface Area ◽  
High Surface ◽  
Specific Capacity ◽  
High Surface Area ◽  
Negative Electrode ◽  
Building Blocks ◽  
High Specific Capacity ◽  
Supercapacitor Performance ◽  
Subsequent Calcination ◽  
Excellent Stability

In this work, mesoporous ZnCo2O4 electrode material with necklace-type nanowires was synthesized by a simple hydrothermal method using water/ethylene glycol mixed solvent and subsequent calcination treatment. The ZnCo2O4 nanowires were assembled by several tiny building blocks of nanoparticles which led to the growth of necklace-type nanowires. The as-synthesized ZnCo2O4 nanowires had porous structures with a high surface area of 25.33 m2 g−1 and with an average mesopore of 23.13 nm. Due to the higher surface area and mesopores, the as-prepared necklace-type ZnCo2O4 nanowires delivered a high specific capacity of 439.6 C g−1 (1099 F g−1) at a current density of 1 A g−1, decent rate performance (47.31% retention at 20 A g−1), and good cyclic stability (84.82 % capacity retention after 5000 cycles). Moreover, a hybrid supercapacitor was fabricated with ZnCo2O4 nanowires as a positive electrode and activated carbon (AC) as a negative electrode (ZnCo2O4 nanowires//AC), which delivered an energy density of 41.87 Wh kg−1 at a power density of 800 W kg−1. The high electrochemical performance and excellent stability of the necklace-type ZnCo2O4 nanowires relate to their unique architecture, high surface area, mesoporous nature, and the synergistic effect between Zn and Co metals.

scholarly journals Exploring frontiers of crystalline porous materials

2014 ◽  
Vol 70 (a1) ◽  
pp. C1620-C1620
Author(s):  
Maciej Haranczyk ◽  
Richard Martin
Keyword(s):  
Porous Materials ◽  
Surface Area ◽  
Chemical Space ◽  
High Surface ◽  
3D Structure ◽  
High Surface Area ◽  
Combinatorial Libraries ◽  
Internal Surface ◽  
Building Blocks ◽  
Geometrical Properties

We present a computational framework for the rapid identification and characterization of high surface area materials from within the vast chemical space of crystalline porous materials such as metal-organic frameworks (MOFs) or covalent organic frameworks (COFs). MOFs and COFs have been the subject of intense research interest due largely to their highly tunable structural properties and record-breaking internal surface areas; gravimetric surface area is one of the most addressed properties of porous materials, and has seen improvement by approximately a factor of twenty since the first reports. However, the design of MOFs with optimum chemical and geometrical properties remains a great challenge, due to the vast combinatorial space of building blocks and topologies in which they can be arranged. Efforts to identify high-performance materials have involved trial-and-error, observation-based design, computational enumeration and screening of large combinatorial libraries as well as optimization-based approaches. In our presentation, we will give an overview of techniques under development in our group, in particular, algorithms for 3D structure model assembly and material characterization. We will also present how these tools can be employed in both enumeration and optimization-based discovery of novel materials.

scholarly journals High Surface Area, Thermally Stable, Hydrophobic, Microporous, Rigid Gels Generated at Ambient from MeSi(OEt)3 /(EtO)3 SiCH2 CH2 Si(OEt)3 Mixtures by F− -Catalyzed Hydrolysis

2017 ◽  
Vol 24 (1) ◽  
pp. 274-280 ◽  
Author(s):  
Joseph C. Furgal ◽  
Honami Yamane ◽  
Timothy R. Odykirk ◽  
Eongyu Yi ◽  
Yoshiki Chujo ◽  
...  
Keyword(s):  
Surface Area ◽  
High Surface ◽  
High Surface Area ◽  
Thermally Stable

scholarly journals High surface area and Z′ in a thermally stable 8-fold polycatenated hydrogen-bonded framework

2015 ◽  
Vol 51 (58) ◽  
pp. 11642-11645 ◽  
Author(s):  
Cassandra A. Zentner ◽  
Holden W. H. Lai ◽  
Joshua T. Greenfield ◽  
Ren A. Wiscons ◽  
Matthias Zeller ◽  
...  
Keyword(s):  
Surface Area ◽  
High Surface ◽  
High Surface Area ◽  
Large Surface Area ◽  
Thermally Stable ◽  
Organic Framework ◽  
Hydrogen Bonded

Permanent porosity, a large surface area, and unprecedented Z′ was exhibited in an 8-fold polycatenated hydrogen-bonded organic framework.

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