A universal route to fabricate hierarchically ordered macro/mesoporous oxides with enhanced intrinsic activity

Xin, Ying; Pin, Jiang; Yu, Mingqiang; Gu, Huachun; Li, Qian; Zhang, Zhaoliang

doi:10.1039/c3ta15060g

Cited by 19 publications

(6 citation statements)

References 46 publications

(48 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…403 However, a major drawback of pure CeO 2 is low thermal stability causing sintering and loss of its redox and oxygen storage properties. Various ceria-based mixed metal oxides including Al-Ce, 345 Ce-Ti, 347 and Ce-Zr 346 have been used as active catalysts for the oxidation of CO, methane, soot, and NOx. Among these binary compounds, Ce 1-x Zr x O 2 (x = 0.1-0.9) is considered to be one of the key components in auto-exhaust treatment catalysts due to its high oxygen storage/release capacity and good thermal stability.…”

Section: Factors Influencing Cbpm Catalystsmentioning

confidence: 99%

A colloidoscope of colloid-based porous materials and their uses

et al. 2016

View full text Add to dashboard Cite

Nature evolved a variety of hierarchical structures that produce sophisticated functions. Inspired by these natural materials, colloidal self-assembly provides a convenient way to produce structures from simple building blocks with a variety of complex functions beyond those found in nature. In particular, colloid-based porous materials (CBPM) can be made from a wide variety of materials. The internal structure of CBPM also has several key attributes, namely porosity on a sub-micrometer length scale, interconnectivity of these pores, and a controllable degree of order. The combination of structure and composition allow CBPM to attain properties important for modern applications such as photonic inks, colorimetric sensors, self-cleaning surfaces, water purification systems, or batteries. This review summarizes recent developments in the field of CBPM, including principles for their design, fabrication, and applications, with a particular focus on structural features and materials' properties that enable these applications. We begin with a short introduction to the wide variety of patterns that can be generated by colloidal self-assembly and templating processes. We then discuss different applications of such structures, focusing on optics, wetting, sensing, catalysis, and electrodes. Different fields of applications require different properties, yet the modularity of the assembly process of CBPM provides a high degree of tunability and tailorability in composition and structure. We examine the significance of properties such as structure, composition, and degree of order on the materials' functions and use, as well as trends in and future directions for the development of CBPM.

show abstract

Section: Factors Influencing Cbpm Catalystsmentioning

confidence: 99%

A colloidoscope of colloid-based porous materials and their uses

et al. 2016

View full text Add to dashboard Cite

show abstract

“…The tests on the scan rate showed that the current response increased accordingly with an increase of the scan rate (Figure S8 in ESI). With the variation of the scan rate, the shape of the CV curves remained unchanged, suggesting a good rate capability and excellent electrochemical reversibility …”

Section: Figurementioning

confidence: 97%

Constructing Porous Carbon Nanomaterials using Redox-Induced Low Molecular Weight Hydrogels and their Application as Supercapacitors

Xie

Wang

2017

ChemistrySelect

View full text Add to dashboard Cite

We synthesized porous carbon and Fe3O4@porous carbon by direct carbonization of redox‐induced low‐molecular‐weight hydrogels. The transition of low‐molecular‐weight hydrogels to hard porous carbons was observed for the first time. Conversely, the transformation of sol to porous carbon was not successful. This suggests that connectivity was a crucial factor distinguishing the porous materials from others. More importantly, it provides a new synthetic route for fabrication of porous materials. The porous carbons obtained exhibited excellent electrochemical properties as supercapacitors.

show abstract

“…In recent years, much effort has been devoted to the synthesis, characterization and application of bimodal macromesoporous materials, [1][2][3][4][5][6] due to organized pore networks and hierarchically multimodal pore-size distributions. For instance in catalysis, mesopores of them help impart a high surface-tovolume ratio, providing numerous active sites and a substantial interfacial area for carrying out catalytic reactions while macropores favor great transportation of matter, offsetting transport limitations present in purely mesoporous materials especially in viscous systems of large molecules (e.g., polymers, biomolecules).…”

Section: Introductionmentioning

confidence: 99%

“…For instance in catalysis, mesopores of them help impart a high surface-tovolume ratio, providing numerous active sites and a substantial interfacial area for carrying out catalytic reactions while macropores favor great transportation of matter, offsetting transport limitations present in purely mesoporous materials especially in viscous systems of large molecules (e.g., polymers, biomolecules). 1,2,7 Porous objects with nm-or mm-scale features and discrete particles can be used as templates to synthesize periodic macropores, and ordered mesoporous materials have been fabricated by using surfactants and amphiphilic copolymers. 8,9 Among these commonly used articial macroporous templates such as polystyrene 1,5,6 and silica microspheres, 10 there were some disadvantages of high cost, complicated procedure of preprocessing and removing, which limited their applications in synthesis of macroporous materials.…”

Section: Introductionmentioning

confidence: 99%