A5100383749- Carbon Dioxide Capture Technologies
- Membrane Separation and Gas Transport
- Electrospun Nanofibers in Biomedical Applications
- Supercapacitor Materials and Fabrication
- Aluminum Alloys Composites Properties
- Hydrogen Storage and Materials
- Hydrogen embrittlement and corrosion behaviors in metals
- Covalent Organic Framework Applications
- Electrohydrodynamics and Fluid Dynamics
- Nuclear Materials and Properties
- Surface Modification and Superhydrophobicity
- Fiber-reinforced polymer composites
- Recycling and Waste Management Techniques
- Catalytic Processes in Materials Science
- Magnesium Alloys: Properties and Applications
- Graphene research and applications
Chinese Academy of Sciences
2018-2023
Ningbo Institute of Industrial Technology
2018-2023
China South Industries Group (China)
2019
Lanzhou University of Technology
2016
Xi'an Peihua University
2007
University of Alberta
2001
Utilizing porous polyacrylonitrile (PAN) fibers as the precursors, carbon were obtained by cross-linking of precursor with hydrazine hydrate and subsequent heat treatment. A nitrogen content more than 14 wt % was achieved in fibers. The fiber that prepared at low concentration (5 %) showed an optimal BET surface area 277.4 m2/g micro-/meso-/macropores. CO2 adsorbed amount this 101 mg/g 25 °C under atmospheric pressure, which 2.1 times without hydrate. In simulated flue gas environment (10%...
Nitrogen-enriched porous carbon fibers were successfully prepared by one-step carbonization–activation treatment of oxidized polyacrylonitrile fibers. Utilizing the low-temperature carbonization and air activation, lots narrow micropores developed, volume pores with a size below 0.8 nm was in range 0.110–0.122 g/cm3. Meanwhile, nitrogen preserved exceeded 20.8 wt % content. The fiber exhibited an optimal CO2 uptake 99 mg/g at 25 °C 1 bar. More importantly, incomparable Henry's law CO2/N2...
Nitrogen-containing porous carbon fibers with a large BET surface area (919–1625 m2/g) and pore volume (0.429–0.772 cm3/g) were developed from polyimide fiber, which was treated in the presence of potassium carbonate by one-step simultaneous carbonization/activation. The effect carbonization temperature on chemical structure monitored. nitrogen contents activated decreased treatment temperature, varied range 1.23–2.76 wt %. Compared unactivated ones showed more ultramicropores than 0.279...
Using KOH, NaOH, and K2CO3 as activating agents, porous carbon fibers were prepared from carbonized polyimide by chemical activation. The filaments could keep their fibrous morphologies after the activation of strong bases (KOH NaOH), which did not change shape initial fiber. nitrogen content was only 1.26–2 wt % in activated fibers, while oxygen exceeded 20 K2CO3- KOH-activated fibers. Compared with PCF–KOH had higher values specific surface area (1156 m2/g), total volume (0.54 cm3/g),...
The fabrication of bionic surfaces resembling hydrophobic plants through micro manufacturing, which creates abundant multi-level micro/nanostructures and elemental variations, has been widely employed to change the surface wettability metallic materials. Based on mechanisms for selective permeation various liquids, it could achieve function oil/water separation. Herein, a separation copper membrane fabricated with pulsed laser ablation modified graphene oxide (GO) deposition showed...
Pre-oxidized polyacrylonitrile (PAN) fibers were chemically modified by sulfuric acid. In the process, conjugated imine sequences retained and amide groups transformed from unreacted nitrile groups. The adsorption experiments of Cu(II) ions PAN indicated that capacities significantly improved increasing initial concentrations metal ions, reaction time temperature. equilibriums followed Langmuir isotherm with correlation coefficients greater than 0.99. Kinetics analysis demonstrated copper on...