Open Framework and Microporous Transition Metal Silicates

ChemInform ◽  
2004 ◽  
Vol 35 (10) ◽  
Author(s):  
Allan J. Jacobson ◽  
Xiqu Wang ◽  
Lumei Liu ◽  
Jin Huang
Keyword(s):  
Transition Metal ◽  
Open Framework ◽  
Transition Metal Silicates

Open Framework and Microporous Transition Metal Silicates

2002 ◽  
Vol 755 ◽  
Author(s):  
Allan J. Jacobson ◽  
Xiqu Wang ◽  
Lumei Liu ◽  
Jin Huang
Keyword(s):  
Hydrothermal Synthesis ◽  
Transition Metal ◽  
Recent Progress ◽  
Cluster Anions ◽  
Open Framework ◽  
Organic Templates ◽  
Four Corners ◽  
Common Principle ◽  
Transition Metal Silicates

ABSTRACTA family of microporous and open-framework microporous transition metal silicates have been prepared by hydrothermal synthesis at T ≤ 240 °C. The structures of the compound are based on a common principle in which anionic silicate components (layers, chains, or cluster anions) are connected by isolated transition metal polyhedra by sharing four corners in a square arrangement. Known examples of this class of compounds are reviewed and some recent progress on extending the syntheses to include organic templates are discussed.

ChemInform Abstract: A Series of Open-Framework Aluminoborates Templated by Transition-Metal Complexes.

ChemInform ◽  
2010 ◽  
Vol 41 (31) ◽  
pp. no-no
Author(s):  
Jian Zhou ◽  
Wei-Hui Fang ◽  
Cheng Rong ◽  
Guo-Yu Yang
Keyword(s):  
Transition Metal ◽  
Metal Complexes ◽  
Transition Metal Complexes ◽  
Open Framework

A new metal–organic open framework enabling facile synthesis of carbon encapsulated transition metal phosphide/sulfide nanoparticle electrocatalysts

2019 ◽  
Vol 7 (12) ◽  
pp. 7168-7178 ◽  
Author(s):  
Baicheng Weng ◽  
Xiaoming Wang ◽  
Corey R. Grice ◽  
Fenghua Xu ◽  
Yanfa Yan
Keyword(s):  
Transition Metal ◽  
Water Splitting ◽  
Metal Organic Framework ◽  
Facile Synthesis ◽  
Metal Phosphide ◽  
Open Framework ◽  
Bifunctional Electrocatalysts ◽  
Metal Organic ◽  
Transition Metal Phosphide ◽  
Scalable Synthesis

A new metal–organic framework enables a facile and scalable synthesis of transition metal phosphide and sulfide nanoparticle encapsulated by heteroatom-doped carbon as bifunctional electrocatalysts for water splitting.

Synthesis of Porous Transition Metal Oxides by the Salt-Gel Method

1994 ◽  
Vol 371 ◽  
Author(s):  
Andreas Stein ◽  
Mark Fendorf ◽  
Thomas P. Jarvie ◽  
Karl T. Mueller ◽  
Maurie E. Garcia ◽  
...  
Keyword(s):  
Transition Metal ◽  
Metal Oxides ◽  
Transition Metal Oxides ◽  
Molecular Sieves ◽  
Double Resonance ◽  
Acid Extraction ◽  
Framework Materials ◽  
Periodic Arrays ◽  
Surface Areas ◽  
Transition Metal Silicates

AbstractComposites of surfactants with certain transition metal oxides can be arranged into periodic arrays with giant tunnel structures. Transmission electron micrographs of these structures resemble images of mesoporous silicate molecular sieves synthesized in the presence of surfactants. However, data in this study lead to the conclusion that Keggin-ions of the type (H2W12O40)6- are formed during the hydrothermal synthesis of a cetyltrimethylammonium/tungstate composite. These cluster anions are not connected to each other. Removal of the organic template therefore results in the collapse of the tunnel structures.A strategy has been developed which uses pre-arranged surfactant-salt structures as precursors for microporous and mesoporous framework materials. Transition metal silicates with long-range structural order have been synthesized by reacting surfactant salts of niobotungstate clusters with tetraethylorthosilicate to form a salt-gel. Infrared and solid-state NMR double resonance spectra indicate that, in addition to linkages between silicate tetrahedra, niobium-oxygen-silicon linkages have been formed in this reaction. Removal of the cationic surfactants by acid-extraction has resulted in porous structures with surface areas up to 265 m2/g.

A Series of Open-Framework Aluminoborates Templated by Transition-Metal Complexes

2010 ◽  
Vol 16 (16) ◽  
pp. 4852-4863 ◽  
Author(s):  
Jian Zhou ◽  
Wei-Hui Fang ◽  
Cheng Rong ◽  
Guo-Yu Yang
Keyword(s):  
Transition Metal ◽  
Metal Complexes ◽  
Transition Metal Complexes ◽  
Open Framework

scholarly journals Fabrication of Phosphorus-Doped Cobalt Silicate with Improved Electrochemical Properties

Molecules ◽  
2021 ◽  
Vol 26 (20) ◽  
pp. 6240
Author(s):  
Jie Ji ◽  
Yunfeng Zhao ◽  
Yifu Zhang ◽  
Xueying Dong ◽  
Changgong Meng ◽  
...  
Keyword(s):  
Transition Metal ◽  
Specific Surface ◽  
Electrochemical Properties ◽  
Electrode Materials ◽  
Electrochemical Performances ◽  
Composition And Structure ◽  
High Theoretical Capacity ◽  
Novel Strategy ◽  
Transition Metal Silicates ◽  
Phosphorus Doped

The development of electrode materials for supercapacitors (SCs) is greatly desired, and this still poses an immense challenge for researchers. Cobalt silicate (Co2SiO4, denoted as CoSi) with a high theoretical capacity is deemed to be one of the sustainable electrode materials for SCs. However, its achieved electrochemical properties are still not satisfying. Herein, the phosphorus (P)-doped cobalt silicate, denoted as PCoSi, is synthesized by a calcining strategy. The PCoSi exhibits 1D nanobelts with a specific surface area of 46 m2∙g−1, and it can significantly improve the electrochemical properties of CoSi. As a supercapacitor’s (SC’s) electrode, the specific capacitance of PCoSi attains 434 F∙g−1 at 0.5 A∙g−1, which is much higher than the value of CoSi (244 F∙g−1 at 0.5 A∙g−1). The synergy between the composition and structure endows PCoSi with attractive electrochemical properties. This work provides a novel strategy to improve the electrochemical performances of transition metal silicates.

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