An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available from the CCDC and typically includes 3D coordinates, cell parameters, space group, experimental conditions and quality measures.
A polypropylene hollow fiber membrane (PPHFM) was obtained by UV grafting polyacrylic acid (PAA) on the surface. The hydrophilicity of PPHFM was improved with water contact angle reduced from 82.3° to 73.6°. The photoinitiator and monomer concentration conditions had significant effects on the grafting rates. After modification, the pure water flux decreased, but the rejection rate was improved.
In this paper, the adsorption capacity of CNT modified polyacrylonitrile (PAN) film on copper ions under different conditions was studied by the adsorption experiment of the prepared multilayer diazo resin acidified carbon nanotubes/PAN composite film. The concentration of copper ion solution before and after adsorption was measured by inductively coupled plasma (ICP). The results show that the adsorption capacity of the pan film modified by CNT increases first and then reaches the adsorption equilibrium with the increase of the adsorption time of copper ion, and the adsorption capacity of the pan film modified by CNT increases with the increase of the initial concentration of copper ion and the external temperature With the increase of solution pH, the adsorption capacity of CNT modified polyacrylonitrile membrane to copper ion increases first and then decreases; after multiple desorption/adsorption of the modified membrane which has reached adsorption equilibrium, the membrane still has CNT adsorption capacity to copper ion, indicating that the membrane has excellent recycling performance.
Abstract Considering the impact of industrial hydrogen load on the consumptive capacity of new energy, it is necessary to research the generation coordination and planning of new power systems considering industry hydrogen load. Firstly, considering the energy consumption in the hydrogen production and storage process, as well as the energy storage for hydrogen addition/use, hydrogen load transfer, and interruptible flexibility, an equivalent electrical load conversion model for multiple forms of hydrogen loads is established. Secondly, considering the impact of industrial hydrogen load on the absorption capacity of new energy, the investment decision-making problem of power supply, hydrogen production, and storage equipment is unified with the operation simulation problem of the system at the planning level, to minimize the annual cost of the system. To reduce the complexity of the model, the proposed model plan to the expansion capacity of various types of power sources from the perspective of power types. Finally, by using actual data from a power grid in a certain province as an example, the results verified the rationality and effectiveness of the model compared with the power grid planning without hydrogen load.
This article described the preparation of opal ball with enhanced structural colors by using silica microspheres droplet templates on polytetrafluoroethylene (PTFE) superhydrophobic surfaces. The structural colors of the opal ball wasgreatly enhanced by incorporating carbon black nanoparticles (CB-NPs) into the voids of silica colloidal crystals in the dry self-assembly (DSA) process.The presence of CB-NPs in the structure did not lead to a shift of the reflection band, but enhanced the diffraction color by increased reflectance and suppressed transmission.
Fullerene (C60) was successfully grafted on cellulose following with the modification of cellulose by acid chlorination and subsequently azidation. The structures of modified cellulose made by sulfonation, acylating chlorination, Azidation, ionization and fullerenated were determined by infrared spectroscopy. The results show that the raw cellulose can obtain good dissolution property when the methyl imidazole-chloropropylene ionic liquid is used as the solvent system. The choice of intermediates has an important effect on the modification. The better grafting efficiency can be obtained with acyl chlorinated cellulose, and the reactivity and reactivity control of the azided chlorinated cellulose fibers are more easily to obtain. The azided chlorinated cellulose can be grafted by fullerene successfully.
Humidity-sensitive poly(ethylene glycol) (PEG) inverse opals with micropatterns of 2 μm wide anti-swell-broken grooves were prepared using polystyrene (PS) colloidal crystals as templates and colloidal lithography. Monodisperse PS colloids were deposited in an ordered manner onto glass slides using a double-substrate vertical deposition method to form colloidal crystal templates. Poly(ethylene glycol) diacrylate (PEGDA) with photoinitiator was infiltrated into the interspaces of the colloidal crystals and photo-crosslinked by UV irradiation through a photomask. After removal the PS templates and unexposed PEGDA by tetrahydrofuran (THF), PEG hydrogel micropatterns with three-dimensional ordered porous structures were obtained. The band gaps of the PS colloidal crystals and corresponding PEG hydrogel inverse opals were measured by UV-VIS reflection spectrometer, calculated by Bragg law and simulated by Band SOLVE. The obtained PEG hydrogel inverse opal micropatterns can be used as sensors for humidity sensing due to absorption and desorption of moisture in the band gap structures. The sensor had a very reliable performance after repeated humidity sensing, and could be mass produced facilely with very low cost. The photopatterned anti-swell-broken grooves play an important role in the reliability of the sensors.
A novel method to prepare capillary coatings using dopamine (DA) and hyaluronic acid (HA) was mentioned in this paper. Firstly, dopamine was oxidized to form polydopamine and attached to the inner wall of the capillary spontaneously. HA attached to the polydopamine by electrostatic interaction to form a polydopamine-hyaluronic acid (PDA-HA) coating. Protein adsorption on the inner surface of capillary was suppressed, and the proteins of lysozyme (Lys), cytochrome c (Cyt-c), bovine serum albumin (BSA) and ribonuclease A (RNase A) were baseline separated obviously using capillary electrophoresis (CE) within 20 minutes.
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