A General Synthetic Approach for Ordered Mesoporous Metal Sulfides

2014 ◽  
Vol 136 (25) ◽  
pp. 8895-8898 ◽  
Author(s):  
Bryan T. Yonemoto ◽  
Gregory S. Hutchings ◽  
Feng Jiao
Keyword(s):  
Metal Sulfides ◽  
Synthetic Approach ◽  
Ordered Mesoporous ◽  
Mesoporous Metal

scholarly journals Molecular Approach to Mesoporous Metal Sulfides

1994 ◽  
Vol 371 ◽  
Author(s):  
Mark T. Anderson ◽  
Paula Newcomer
Keyword(s):  
Metal Ions ◽  
Room Temperature ◽  
Negative Charge ◽  
Metal Sulfide ◽  
Metal Sulfides ◽  
Synthetic Approach ◽  
Divalent Metal Ions ◽  
Molecular Precursors ◽  
Mesoporous Metal ◽  
Cooperative Assembly

AbstractWe have synthesized metal-sulfide/surfactant nanocomposite materials by cooperative assembly of molecular precursors in an aqueous medium. The template-mediated synthetic approach is applicable to metal sulfides that exhibit aqueous thiometallate chemistry. The products are lamellar and have bilayers or interdigitated layers of surfactant molecules sandwiched between metal sulfide layers. The layers of anionic metal sulfide molecules are not completely condensed in the nanocomposites, which results in a negative charge on the metal sulfide layers. The materials are stable at room temperature in water, methanol, 1 M HCl, 30 wt% NH3, and 1 M NaOH. The materials do not dissolve at 80 °C in water and are stable to at least 180 0C in air. The nanocomposites exhibit ion exchange of smaller surfactants, alkali-metal ions, and divalent metal ions.

scholarly journals Designing and Fabricating Ordered Mesoporous Metal Oxides for CO2 Catalytic Conversion: A Review and Prospect

Materials ◽  
2019 ◽  
Vol 12 (2) ◽  
pp. 276 ◽  
Author(s):  
Yan Cui ◽  
Xinbo Lian ◽  
Leilei Xu ◽  
Mindong Chen ◽  
Bo Yang ◽  
...  
Keyword(s):  
Metal Oxides ◽  
Active Sites ◽  
Porous Metal ◽  
Catalytic Conversion ◽  
Thermal Stabilities ◽  
Heterogeneous Catalytic ◽  
Mesoporous Metal Oxides ◽  
Internal Surfaces ◽  
Ordered Mesoporous ◽  
Mesoporous Metal

In the past two decades, great progress has been made in the aspects of fabrication and application of ordered mesoporous metal oxides. Ordered mesoporous metal oxides have attracted more and more attention due to their large surface areas and pore volumes, unblocked pore structure, and good thermal stabilities. Compared with non-porous metal oxides, the most prominent feature is their ability to interact with molecules not only on their outer surface but also on the large internal surfaces of the material, providing more accessible active sites for the reactants. This review carefully describes the characteristics, classification and synthesis of ordered mesoporous metal oxides in detail. Besides, it also summarizes the catalytic application of ordered mesoporous metal oxides in the field of carbon dioxide conversion and resource utilization, which provides prospective viewpoints to reduce the emission of greenhouse gas and the inhibition of global warming. Although the scope of current review is mainly limited to the ordered mesoporous metal oxides and their application in the field of CO2 catalytic conversion via heterogeneous catalysis processes, we believe that it will provide new insights and viewpoints to the further development of heterogeneous catalytic materials.

scholarly journals Ordered Mesoporous Metal–Phenolic Network Particles

2019 ◽  
Vol 142 (1) ◽  
pp. 335-341 ◽  
Author(s):  
Zhixing Lin ◽  
Jiajing Zhou ◽  
Christina Cortez-Jugo ◽  
Yiyuan Han ◽  
Yutian Ma ◽  
...  
Keyword(s):  
Ordered Mesoporous ◽  
Mesoporous Metal

scholarly journals Comparison of Catalytic Activity of Chromium–Benzenedicarboxylate Metal–Organic Framework Based on Various Synthetic Approach

Catalysts ◽  
2020 ◽  
Vol 10 (3) ◽  
pp. 318 ◽  
Author(s):  
Tian Zhao ◽  
Hexin Zhu ◽  
Ming Dong
Keyword(s):  
Catalytic Activity ◽  
Hierarchical Structure ◽  
Metal Organic Framework ◽  
Catalytic Performance ◽  
Synthetic Approach ◽  
Phenylphosphonic Acid ◽  
Metal Organic ◽  
Mesoporous Metal ◽  
Organic Framework

MIL-101(Cr), as a prototypical mesoporous metal–organic framework (MOF), can be facially prepared by involving different modulators to fit various demands. In this paper, a range of MIL-101(Cr) products were prepared under similar conditions. It was found that one of the additives, phenylphosphonic acid (PPOA), could give a stable hierarchical structure material. Compared to other MIL-101(Cr)s, though hierarchical MIL-101(Cr) showed less porosity, it gave a better catalytic performance in the oxidation of indene and 1-dodecene.

scholarly journals Synthetic versatility of nanoparticles: A new, rapid, one-pot, single-step synthetic approach to spherical mesoporous (metal) oxide nanoparticles using supercritical alcohols

2014 ◽  
Vol 86 (5) ◽  
pp. 785-800 ◽  
Author(s):  
Pengyu Wang ◽  
Kazuya Kobiro
Keyword(s):  
Metal Oxide ◽  
Metal Oxide Nanoparticles ◽  
Single Step ◽  
Oxide Nanoparticles ◽  
Synthetic Approach ◽  
Organic Additives ◽  
Step Method ◽  
One Pot ◽  
Mesoporous Metal ◽  
Mesoporous Metal Oxide

AbstractA simple, rapid (10 min), one-pot, single-step method for the preparation of solid and hollow spherical porous TiO2 nanoparticles with large surface areas (100–211 m2/g) was developed in supercritical alcohols using carboxylic acids as organic additives. The shell thickness of the hollow TiO2 nanoparticles (20–280 nm) was controlled by adjusting the heating rate (2.0–10.0 °C/min). The preparation of different spherical porous metal oxide nanoparticles, including CeO2, SiO2, TiO2, ZrO2, and ZnO, demonstrated the versatility of the synthetic approach. In addition, several rare earth-doped spherical mesoporous metal oxide nanoparticles, including CeO2:Er, CeO2:Er,Yb, ZrO2:Er, and TiO2:Er, which exhibit energy upconversion emission, were successfully prepared using this one-pot, single-step, supercritical methanol method. The obtained spherical mesoporous CeO2:Er and CeO2:Er,Yb nanoparticles emit green light upon excitation, even when irradiated with a low-power IR laser (980 nm, 10 mW) without calcination. Several other (metal) elements were also easily doped into spherical, mesoporous TiO2 nanoparticles, such as Eu, Ce, Yb, Fe, and N, using a similar procedure. Furthermore, the spherical mesoporous TiO2 nanoparticles were successfully applied as a new material for the transport of DNA via biolistic bombardment.

scholarly journals Direct Construction of Mesoporous Metal Sulfides via Reactive Spray Deposition Technology

2019 ◽  
Vol 2 (4) ◽  
pp. 2370-2374 ◽  
Author(s):  
Yang Wang ◽  
Yang Wu ◽  
Alireza Shirazi-Amin ◽  
Peter Kerns ◽  
Jared Fee ◽  
...  
Keyword(s):  
Spray Deposition ◽  
Metal Sulfides ◽  
Direct Construction ◽  
Mesoporous Metal ◽  
Deposition Technology
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