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Sugar-based micro/mesoporous hypercross-linked polymers with in situ embedded silver nanoparticles for catalytic
Qing Yin1,2, Qi Chen2, Li-Can Lu1
1College of Chemistry, Xiangtan University, Xiangtan 411105, China.
Beilstein Journal of Organic Chemistry
|July 12, 2017
Summary
New porous polymers from sugars offer high surface area for CO2 capture and catalysis. SugPOP polymers demonstrate excellent carbon dioxide storage and support silver nanoparticles for efficient 4-nitrophenol reduction.
Area of Science:
- Materials Science
- Polymer Chemistry
- Nanotechnology
Background:
- Hypercross-linked polymers offer tunable porosity for gas storage and catalysis.
- Developing sustainable materials from renewable resources like sugars is a key research area.
- Silver nanoparticles (AgNPs) are effective catalysts but require stable supports.
Purpose of the Study:
- To synthesize novel porous hypercross-linked polymers (SugPOP) from perbenzylated monosugars.
- To investigate the porosity, surface area, and CO2 storage capacity of the synthesized polymers.
- To explore the potential of SugPOP as a support for silver nanoparticles in catalytic applications.
Main Methods:
- Friedel-Crafts reaction using formaldehyde dimethyl acetal as a cross-linker.
- Synthesis of porous polymers (SugPOP-1-3) using three different perbenzylated monosugars.
- Incorporation of silver nanoparticles (AgNPs) into SugPOP-1 via in situ chemical reduction of Tollens' reagent.
Main Results:
- SugPOP polymers exhibited microporous and mesoporous characteristics.
- The highest Brunauer-Emmett-Teller (BET) surface area achieved was 1220 m² g⁻¹.
- The polymers demonstrated a high CO2 storage capacity of 14.4 wt% at 1.0 bar and 273 K.
- The AgNPs/SugPOP-1 composite showed significant catalytic activity (kₐ = 51.4 s⁻¹ g⁻¹) in 4-nitrophenol reduction.
Conclusions:
- Perbenzylated monosugars can be effectively used to create porous hypercross-linked polymers with tunable properties.
- The synthesized SugPOP materials are promising for carbon dioxide capture applications.
- The AgNPs/SugPOP-1 composite exhibits excellent catalytic performance, highlighting its potential in chemical synthesis and environmental remediation.
