Synthesis and characterization of bulky mesoporous silica Pd-MCM-41

Nagata, Hidezumi; Hirao, Norie; Onoki, Takamasa; Baba, Yuji; Yamasaki, Yoshio; Nakahira, Atsushi

doi:10.2109/jcersj2.116.216

Cited by 10 publications

(4 citation statements)

References 17 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The bulk obtained by HHP possessed the mesopores derived from characteristic nanonetwork structures, which is expected to be a useful material for applications such as dye-sensitizing solar batteries. In our previous work, the functional bulk forms of hydroxyapatite (HAp), Y-zeolite, and mesoporous silica (FSM and MCM) materials have been successfully fabricated using this HHP method – .…”

Section: Introductionmentioning

confidence: 99%

Microstructural Control of Mesoporous Bulk Composed of TiO₂-Derived Titanate Nanotubes

Nakahira

Kubo

Yamasaki

2010

ACS Appl. Mater. Interfaces

Self Cite

View full text Add to dashboard Cite

The mesoporous bulks composed of TiO(2)-derived titanate nanotubes fabricated from a hydrothermal treatment of commercial TiO(2) particles in a concentrated NaOH aqueous solution were obtained by a hydrothermal hot-pressing (HHP) method and subsequent steam-curing process with HCl solutions. The mesopore size and sodium concentration for the bulky TiO(2)-derived titanate nanotubes were dependent on the treatment conditions on the steam curing process with HCl solutions. The effect of the sodium concentration (Na/Ti) on microstructures were examined on the steam curing process for the application of the bulky TiO(2)-derived titanate nanotubes to several new fields.

show abstract

Section: Introductionmentioning

confidence: 99%

Microstructural Control of Mesoporous Bulk Composed of TiO₂-Derived Titanate Nanotubes

Nakahira

Kubo

Yamasaki

2010

ACS Appl. Mater. Interfaces

Self Cite

View full text Add to dashboard Cite

show abstract

“…HHP is also capable of consolidating bulky mesoporous silica achieving a dense microstructure free from large voids while maintaining a high value of specific surface area exceeding 1000 m 2 g -1 [106]. Bulky mesoporous silica Pd-MCM-41 (palladium catalyst supported on mesoporous catalyst) processed by HHP resulted in a high surface area of over 1000 m 2 g [107]. In a follow-up work by Kubo et al [56], Pt-supported titanate nanotubes and their photocatalytic properties were investigated.…”

Section: Hydrothermal Hot Pressingmentioning

confidence: 99%

A review of cold sintering processes

Grasso

Biesuz

Zoli

et al. 2020

Advances in Applied Ceramics

194

View full text Add to dashboard Cite

The need to reduce the energy consumed and the carbon footprint generated by firing ceramics has stimulated research to develop consolidation techniques operating at lower temperatures, ideally not exceeding 300°C. This has been realised in Ultra Low Energy Sintering (ULES) using high pressure (hundreds of MPa) in the presence of a transient liquid phase, which accelerates plasticity, grain boundary/surface diffusion and mass transport. Several ULES techniques have been developed in the past 50 years, and a common feature of all of them is low temperature consolidation, through mechanisms not yet fully understood, enabling multi-material integration (e.g. organics and inorganics). This research could transform the traditional firing of functional and structural materials. Early stage work on ULES, started in the 1960s, clearly demonstrated cohesion between the compacted particles exceeding what was possible if simply produced by Van der Waals bonding, suggesting the formation of primary inter-particle bonds. Surprisingly, metals Cold Sintered (CS) in dry conditions at room temperature can be even stronger than their counterparts sintered at high temperatures (typically ≈ 2/3 T m). Hydrothermal Hot Pressing (HHP) was originally conceived in the context of sustainability and environmental preservation, with some examples being the concept of 'synthetic rock' for immobilisation of toxic/radioactive waste and the consolidation of high surface area porous ceramics for filtration. Follow up work on HHP considered the possibility of recreating in the lab bio-mineralisation using hydroxyapatite and bioglass (including hybrids) as proof of concept. Recent work on the Cold Sintering Process has demonstrated the potential to bridge the processing gap of multimaterial devices (sensors, batteries, 5G antennas, electronic components and biomaterials), enabling integration of polymers, ceramics and metals without degradation of the individual components both at the bulk and interface level. The absence of heating unlocks grain boundary design to an unprecedented level, offering further degrees of freedom in tuning functional properties. This review provides a wide perspective on room temperature consolidation, and covers the related but fragmented work published (≈ 450 papers) during the past 50 years, encompassing the relevant work developed in different disciplines including chemistry, physics, biology and geoscience. Liquid-assisted or liquid-mediated phenomena involving diffusion, plasticity, rheology, and grain growth are still largely unexplored in material science. The purpose of bringing together this literature is to build a general and multidisciplinary knowledge to guide future research directions. Both the reduction of energy consumption and carbon footprint are driving the growing interest in ULES, which could reinvent the concept of sintering, 'rendering kilns obsolete'. Also, ULES has the potential to produce new classes of materials that cannot be fabricated using conventional routes.

show abstract

“…By hot pressing of the mesoporous powder with deionized water in a stainless steel mold, the bulky structure of mesoporous silica powder and TiO 2 nanotubes were successfully fabricated. [12][13][14][15] Although the bulky mesoporous silica and TiO 2 nanotubes showed excellent surface areas of over 1000 and 200 m 2 g 21 , respectively, this process needs a relatively long sintering time and a few processing steps for curing and washing of the sintered bodies. In this respect, direct sintering of mesoporous powder can be regarded as the mostly desirable approach for the fabrication of the bulky mesoporous structure.…”

Section: Introductionmentioning

confidence: 99%

Bulky mesoporous TiO2 structure

et al. 2012

View full text Add to dashboard Cite

Synthesis and characterization of bulky mesoporous silica Pd-MCM-41

Cited by 10 publications

References 17 publications

Microstructural Control of Mesoporous Bulk Composed of TiO₂-Derived Titanate Nanotubes

Microstructural Control of Mesoporous Bulk Composed of TiO₂-Derived Titanate Nanotubes

A review of cold sintering processes

Bulky mesoporous TiO2 structure

Contact Info

Product

Resources

About

Synthesis and characterization of bulky mesoporous silica Pd-MCM-41

Cited by 10 publications

References 17 publications

Microstructural Control of Mesoporous Bulk Composed of TiO2-Derived Titanate Nanotubes

Microstructural Control of Mesoporous Bulk Composed of TiO2-Derived Titanate Nanotubes

A review of cold sintering processes

Bulky mesoporous TiO2 structure

Contact Info

Product

Resources

About

Microstructural Control of Mesoporous Bulk Composed of TiO₂-Derived Titanate Nanotubes

Microstructural Control of Mesoporous Bulk Composed of TiO₂-Derived Titanate Nanotubes