The exploration of novel porous core-shell materials is of great significance because of their prospectively improved performance and extensive applications in separation, energy conversion, and catalysis. Here, mesoporous metal-organic frameworks (MOFs) NH-MIL-101(Fe) as a core generate a shell with mesoporous covalent organic frameworks (COFs) NUT-COF-1(NTU) by a covalent linking process, the composite NH-MIL-101(Fe)@NTU keeping retentive crystallinity with hierarchical porosity well. Importantly, the NH-MIL-101(Fe)@NTU composite shows significantly enhanced catalytic conversion and selectivity during styrene oxidation. It is mainly due to the hydrophilic MOF nanocrystals readily gathering the hydrophobic reactants styrene and boosting the radical mechanism path after combining the hydrophobic COFs shell. The synthetic strategy in this systematic study develops a new rational design for the synthesis of other core-shell MOF/COF-based hybrid materials, which can expand the promising applications.
Download full-text PDF |
Source |
|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6468976 | PMC |
| http://dx.doi.org/10.1002/advs.201802365 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Antibacterial poly(ethyl methacrylate) surfaces constructed by facile amination with polyethyleneimine of different architectures.
Colloids Surf B Biointerfaces
December 2024
Key Laboratory of Macromolecular Synthesis and Functionalization (Ministry of Education), Department of Polymer Science and Engineering, Zhejiang University, Hangzhou 310027, China; Center of Healthcare Materials, Shaoxing Institute, Zhejiang University, Shaoxing 312000, China. Electronic address:
Polymethacrylate and its derivatives are widely used in food industry and biomedical applications for their plasticity, biocompatibility and optical transparency. However, susceptibility to bacterial growth on their surfaces limits their applications. In this study, linear and branched polyethyleneimine (PEI) molecules were grafted onto poly(ethyl methacrylate) (PEMA) via aminolysis using a simple one-step method to enhance the antibacterial properties of PEMA films.
View Article and Find Full Text PDFHierarchically Porous Polypyrrole Foams Contained Ordered Polypyrrole Nanowire Arrays for Multifunctional Electromagnetic Interference Shielding and Dynamic Infrared Stealth.
Nanomicro Lett
December 2024
School of Chemistry, Key Laboratory of Advanced Technologies of Materials (Ministry of Education), Southwest Jiaotong University, Chengdu, 610031, People's Republic of China.
As modern communication and detection technologies advance at a swift pace, multifunctional electromagnetic interference (EMI) shielding materials with active/positive infrared stealth, hydrophobicity, and electric-thermal conversion ability have received extensive attention. Meeting the aforesaid requirements simultaneously remains a huge challenge. In this research, the melamine foam (MF)/polypyrrole (PPy) nanowire arrays (MF@PPy) were fabricated via one-step electrochemical polymerization.
View Article and Find Full Text PDFChiral Mesostructured Yb3+, Er3+ Codoped CeO2 with Upconverted Circularly Polarized Luminescence.
Chemistry
December 2024
Tongji University, School of Chemical Science and Engineering, 1239 Siping Road, Shanghai, CHINA.
Upconverted circularly polarized luminescence (UC-CPL) active organic and organic-inorganic composite materials have garnered increasing attention due to their vast potential applications in areas such as 3D displays, encryptions, spintronics and optoelectronic devices. However, effective methods for fabricating chiral inorganic materials exhibiting UC-CPL remain a challenge. Herein, we propose an approach for the synthesis of UC-CPL active chiral mesostructured CeO2 powders (CMCs) via a hydrothermal growth method, using L/D-aspartic acid as symmetry-breaking and structure-directing agents.
View Article and Find Full Text PDFPredesign of Covalent-Organic Frameworks for Efficient Photocatalytic Dehydrogenative Cross-Coupling Reaction.
Adv Mater
December 2024
National and Local Joint Engineering Research Center of MPTES in High Energy and Safety LIBs, Engineering Research Center of MTEES (Ministry of Education), and Key Lab. of ETESPG (GHEI), School of Chemistry, South China Normal University, Guangzhou, 510006, China.
The dehydrogenative cross-coupling reaction is the premier route for synthesizing important 4-quinazolinone drugs. However, it usually requires high reaction temperature and long reaction time, and the yield of the final product is low. Here two stable and photosensitive covalent-organic frameworks (COFs), TAPP-An and TAPP-Cu-An are purposefully designed and constructed to serve as unprecedented heterogeneous tandem catalysts to complete dehydrogenative cross-coupling reactions in a short time and under mild reaction conditions (room temperature and light), leading to the high-efficient photosynthesis of 4-quinazolinones.
View Article and Find Full Text PDFOne-Step Construction of 2-Methylquinazolin-4(3)-ones Using Solid Calcium Carbide as an Alternative to Gaseous Acetylene.
J Org Chem
December 2024
College of Chemistry and Chemical Engineering, State Key Laboratory of High-efficiency Utilization of Coal and Green Chemical Engineering, Ningxia University, Yinchuan, Ningxia 750021, P. R. China.
2-Methylquinazolin-4(3)-ones were efficiently constructed using solid calcium carbide as an alkyne source, 2-aminobenzamides or 2-aminobenzohydrazides as substrates, and -tolylsulfonyl azide as a mediator through simultaneous formation of two C-N bonds in one step. The salient features of this protocol are the use of an inexpensive, abundant and easy-to-use alkyne source as a substitute for flammable and explosive gaseous acetylene, low-cost catalyst, wide substrate scope, satisfactory yield, and simple manipulation. This method can also be extended to gram scale.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!