Facile preparation of MOF-derived MHCo3O4 & Co/C with hierarchical porous structure for entrapping enzyme: Having both high stability and catalytic activity

2021 ◽  
Author(s):  
Xia Gao ◽  
Huibin Pan ◽  
Chengfang Qiao ◽  
Yongliang Liu ◽  
Chun-Sheng Zhou ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Porous Structure ◽  
Porous Materials ◽  
Hierarchical Structure ◽  
High Stability ◽  
The Self ◽  
Hierarchical Porous Structure ◽  
Sacrificial Template ◽  
Hierarchical Porous ◽  
Facile Preparation

MOF-derived porous materials Co3O4 and Co/C with hierarchical structure (MHCo3O4 & Co/C) were prepared by the self-sacrificial template strategy, and the surface of such materials were functionally modified with "polydopamine...

Preparation of CaCO3 and CaO Replicas Retaining the Hierarchical Structure of SpruceWood

2013 ◽  
Vol 68 (5-6) ◽  
pp. 533-538 ◽  
Author(s):  
Somruedee Klaithong ◽  
Daniel Van Opdenbosch ◽  
Cordt Zollfrank ◽  
Johann Plank
Keyword(s):  
Porous Structure ◽  
Hierarchical Structure ◽  
Mechanical Stability ◽  
Structural Characteristics ◽  
Precursor Solution ◽  
Hierarchical Porous Structure ◽  
Hierarchical Porous ◽  
Submicron Scale ◽  
The Hierarchical Structure ◽  
Wood Template

The principal structural characteristics of softwood (spruce) were replicated in CaCO3 and CaO on various levels of hierarchy from the macroscopic to the submicron scale. Positive replicas were obtained by infiltrating pretreated softwood templates with a Ca(OCOOCH3)2 precursor solution which hydrolyzed into CaCO3 nanoparticles. They reproduce the hierarchical porous structure of the wood template. Calcination at temperatures from 350 to 900 °C yields calcite as the main polymorph. Mechanical stability of the replica is optimized when the specimen is calcined at 900 °C

scholarly journals Effect of Furfurylation on Hierarchical Porous Structure of Poplar Wood

Polymers ◽  
2020 ◽  
Vol 13 (1) ◽  
pp. 32
Author(s):  
Xiaoshuang Shen ◽  
Pan Jiang ◽  
Dengkang Guo ◽  
Gaiyun Li ◽  
Fuxiang Chu ◽  
...  
Keyword(s):  
Porous Structure ◽  
Value Added ◽  
Untreated Wood ◽  
Weight Percent Gain ◽  
Wood Properties ◽  
Weight Percent ◽  
Acoustic Properties ◽  
Hierarchical Porous Structure ◽  
Wood Processing ◽  
Hierarchical Porous

Some wood properties (such as permeability and acoustic properties) are closely related to its hierarchical porous structure, which is responsible for its potential applications. In this study, the effect of wood impregnation with furfuryl alcohol on its hierarchical porous structure was investigated by microscopy, mercury intrusion porosimetry and nuclear magnetic resonance cryoporometry. Results indicated decreasing lumina diameters and increasing cell wall thickness of various cells after modification. These alterations became serious with enhancing weight percent gain (WPG). Some perforations and pits were also occluded. Compared with those of untreated wood, the porosity and pore volume of two furfurylated woods decreased at most of the pore diameters, which became more remarkable with raising WPG. The majority of pore sizes (diameters of 1000~100,000 nm and 10~80 nm) of macrospores and micro-mesopores of two furfurylated woods were the same as those of untreated wood. This work could offer thorough knowledge of the hierarchical porous structure of impregnatedly modified wood and pore-related properties, thereby providing guidance for subsequent wood processing and value-added applications.

Facile preparation of a hierarchically porous metal–organic nanocomposite with excellent catalytic performance

RSC Advances ◽  
2016 ◽  
Vol 6 (99) ◽  
pp. 97399-97403 ◽  
Author(s):  
Rui Kuang ◽  
Luyi Zheng ◽  
Ethan Cottrill ◽  
Ning Pan ◽  
Yanhui Chi ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Aging Process ◽  
Porous Metal ◽  
Catalytic Performance ◽  
High Catalytic Activity ◽  
Hierarchically Porous ◽  
Hierarchical Porous ◽  
Metal Organic ◽  
Facile Preparation ◽  
Excellent Catalytic Performance

A hierarchical porous MOF nanocrystal, hpCuL (L = 2,4,6-tris(3,5-dicarboxylatephenylamino)-1,3,5-triazine) was prepared via a facile gel-aging process. This nanocomposite exhibits high catalytic activity and stability for the reduction of 4-nitrophenol.

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