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HCAII-inspired Catalysts for Making Carbon Dioxide-based Copolymers: The Role of Metal-hydroxide Bond
The general characteristics of the active center of the catalysts (including zinc-cobalt(III) double metal cyanide complex [Zn-Co(III) DMCC]) for the copolymerization reaction of carbon dioxide (CO2) with epoxide are summarized. By comparing the active center, catalytic performance of the Zn-Co(III) DMCC (and other catalysts) with HCAII enzyme in the organism for activating CO2 (COS and CS2), we...
http://www.polymer.cn//ss/xhzhang/publicationsshow_14181.html |
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Metal-Free Route to Precise Synthesis of Poly(propylene oxide) and Its Blocks with High Activity
The fast and living ring-opening polymerization (ROP) of propylene oxide (PO) by metal-free catalysis is reported. By using triethyl borane (TEB) and organic Lewis bases (LBs, e.g.: phosphazene base, amidine and guanidine) as the catalysts, various alkyl alcohols can effectively initiate the ROP of PO, yielding tailor-made poly(propylene oxide)s (PPOs) with high regioregularity, predictable mole...
http://www.polymer.cn//ss/xhzhang/publicationsshow_14175.html |
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[Polym. Chem.] Rare Earth Metal-Mediated Ring-opening Polymerisation of Cyclic Phosphoesters
In this report, simple ytterbocene complex was used for the first time in the ring-opening polymerisation of cyclic phosphoesters. The polymerisation is applicable to both cyclic phosphonates and cyclic phosphates, giving corresponding biodegradable polyphosphoesters with medium to high molar mass and low molecular weight distribution. NMR and MALDI-Tof investigation indicates the polymerisation f...
http://www.polymer.cn//ss/zhang_ning/publicationsshow_14150.html |
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Anion-regulated solid polymer electrolyte enhances the stable deposition of lithium ion for lithium metal batteries
The adoption of lithium metal anodes, which are ideal for constructing batteries with high specific energy, is limited by dendrite growth and poor cycle performance. Herein, an anion-regulated solid polymer electrolyte based on in-situ-polymerized poly(ethylene glycol ether acrylate) is prepared for dendrite-free lithium metal batteries. According to the space-charge theory, the growth of lithiu...
http://www.polymer.cn//ss/dujie/publicationsshow_14074.html |
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PEI grafted UiO-66-NH2(Zr) Metal-Organic Frameworks: Preparation and Enhanced CO2 Selective Adsorption. ACS Omega
UiO-66-NH2, a zirconium-based functional metal?organic framework (MOF), was postsynthetically modified via Schiff base reaction between aldehyde groups in glutaraldehyde and amino groups in UiO-66-NH2 and CO2-preabsorbed polyethyleneimine (PEI). The resulting PEImodified MOFs, abbreviated as PEIC@UiO, were characterized with 1H NMR, Fourier transform infrared, powder Xray diffraction, Brunauer?E...
http://www.polymer.cn//ss/wulinbo/publicationsshow_14067.html |
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Metal nanoparticles supported on WO3 nanosheets for highly selective hydrogenolysis of cellulose to ethylene glycol
Although the conversion of cellulose to polyols is currently well-developed, the production of the considerably valuable ethylene glycol (EG) is still challenging. Reactions have long relied on the design of suitable catalysts to obtain a high selectivity and yield of EG. Herein, using well-shaped rectangular tungsten trioxide nanosheets as the substrate, we investigated the catalytic performanc...
http://www.polymer.cn//ss/zhoujiancheng/publicationsshow_14049.html |
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Effect of Amino Functionality on the Uptake of Cationic Dye by Titanium-Based Metal Organic Frameworks
Titanium-based metalorganic frameworks (MOFs), named MIL-125 and NH2-MIL-125, have been successfully synthesized by the hydrothermal method. They were specially designed for the application of methylene blue (MB) removal from aqueous solution. The maximum adsorption capacityof MB was found to be 321.39 mg/g and 405.61 mg/g. The amount of dye
that has been adsorbed 99.9% was 300 ppm within 20 ...
http://www.polymer.cn//ss/zhoujiancheng/publicationsshow_14047.html |
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Bio-oil production from hydrogenation liquefaction of rice straw over metal (Ni, Co, Cu)-modified CeO2 catalysts
This paper describes catalytic hydrogenation liquefaction of rice straw over metal (Ni, Co, and Cu)-modified CeO2 catalysts for bio-oil production. The results show that the highest rice straw conversion (89.08%) and bio-oil yield (66.7%) were obtained over Ni/CeO2 catalyst. The bio-oil contains mainly phenols, high-value-added, and widely used chemicals. Furthermore, metal-modified CeO2 catalys...
http://www.polymer.cn//ss/zhoujiancheng/publicationsshow_14042.html |
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64. Macroporous graphene thin films as electrochemical electrodes: Enhancing the sensitivity for detection of metal ions
A macroporous graphene thin films coated on ITO substrates (MGTFs@ITO) have been developed as electrodes for the electrochemical detection of heavy metal ions. The MGTF@ITO electrodes were characterized by scanning electron microscopy, Raman spectroscopy and contact angle measurements. Theresults demonstrated that the MGTF@ITO has a high specific area with robust macroporous framework and a hydrop...
http://www.polymer.cn//ss/jianxingeng/publicationsshow_13957.html |
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44. Composite Films of Poly(3-hexylthiophene) Grafted Single-Walled Carbon Nanotubes for Electrochemical Detection of Metal Ions
In this study, we prepared electrochemically active films of poly(3-hexylthiophene) grafted single-walled carbon nanotubes (SWNT-g-P3HT) by using a modified vacuum-assisted deposition approach, in which a SWNT-g-P3HT composite layer of various thicknesses was deposited on the top of a thin SWNT layer. Measurement of the optical and electrical properties of the SWNT-g-P3HT composite films demonstra...
http://www.polymer.cn//ss/jianxingeng/publicationsshow_13937.html |
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