Ordered, Mesoporous Metal Phosphonate Materials with Microporous Crystalline Walls for Selective Separation Techniques

Small ◽  
2011 ◽  
Vol 7 (13) ◽  
pp. 1827-1837 ◽  
Author(s):  
Tian-Yi Ma ◽  
Hui Li ◽  
An-Na Tang ◽  
Zhong-Yong Yuan
Keyword(s):  
Selective Separation ◽  
Separation Techniques ◽  
Metal Phosphonate ◽  
Ordered Mesoporous ◽  
Mesoporous Metal

scholarly journals Material- and Size-selective Separation Mechanism of Micro Particles in Frequency-modulated Dielectrophoretic Particle Chromatography

2021 ◽  
Author(s):  
Jasper Giesler ◽  
Laura Weirauch ◽  
Jorg Thöming ◽  
Michael Baune ◽  
Georg R. Pesch
Keyword(s):  
Surface Functionalization ◽  
Selective Separation ◽  
Separation Mechanism ◽  
Separation Techniques ◽  
Retention Mechanisms ◽  
Biological Particles ◽  
Micro Particles ◽  
Good Agreement

Abstract Separation of (biological) particles (<< 10 µm) according to size or other properties is an ongoing challenge in a variety of technical relevant fields. Dielectrophoresis is one method to separate particles according to a diversity of properties, and within the last decades a pool of dielectrophoretic separation techniques has been developed. However, many of them either suffer selectivity or throughput. We use simulation and experiments to investigate retention mechanisms in a novel DEP scheme, namely, frequency-modulated DEP. Results from experiments and simulation show a good agreement for the separation of binary PS particles mixtures with respect to size and more importantly, for the challenging task of separating equally sized microparticles according to surface functionalization alone. The separation with respect to size was performed using 2 µm and 3 µm sized particles, whereas separation with respect to surface functionalization was performed with 2 µm particles. The results from this study can be used to solve challenging separation tasks, for example to separate particles with distributed properties.

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

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

Ordered mesoporous metal oxides: synthesis and applications

2012 ◽  
Vol 41 (14) ◽  
pp. 4909 ◽  
Author(s):  
Yu Ren ◽  
Zhen Ma ◽  
Peter G. Bruce
Keyword(s):  
Metal Oxides ◽  
Mesoporous Metal Oxides ◽  
Ordered Mesoporous ◽  
Mesoporous Metal

scholarly journals TiO2 Nanofibers Decorated with Monodispersed WO3 Heterostruture Sensors for High Gas Sensing Performance Towards H2 Gas

2021 ◽  
Author(s):  
M Kumaresan ◽  
M. Venkatachalam ◽  
M. Saroja ◽  
P. Gowthaman
Keyword(s):  
Oxygen Vacancies ◽  
Gas Sensing ◽  
Film Sensor ◽  
Tio2 Nanofibers ◽  
Mesoporous Metal Oxides ◽  
Ordered Mesoporous ◽  
Unique Path ◽  
Coating Method ◽  
Gas Molecules ◽  
Mesoporous Metal

Abstract A simple spin coating method was used to prepare the WO3-TiO2 heterostructural nanofibers (HNFs). Various kinds of techniques, including XRD, SEM, TEM, EDS and XPS, have described the structures, chemical constitutions and morphologies of the samples. Following the decoration of the WO3 nanocubes on the surface of TiO2 nanofibers, XPS findings confirmed the presence of W5+ and the excess proportion of both chemisorbed reactive oxygen and oxygen vacancies. WO3 incorporated TiO2 thin film sensor showed high sensing response (78%), rapid response (20 s) and recovery time (23 s) with respect to other gas molecules (NH3, NO2, LPG and SO2). The finding demonstrates that the WO3-TiO2 sensor showed good selective response towards H2 gas. A unique path was created by this work to build hetero-highly ordered mesoporous metal oxides junctions for applications in H2 gas sensor based devices.

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