This experiment is to research the chemical compositions of the crosslink of the woolen, oxidized with H 2 O 2 of various concentrations and temperatures, cured with the citric acid and TiO 2 /chitosan liquid of different proportions, and then observed by means of Fourier Transfer Infrared Spectrometer (FT-IR), Scanning Electronic Microscope (SEM), Energy Dispersive Spectrometer (EDS), and Thermo-Gravity Analyzer (TGA). Its antishrinkage, antimicrobes, antiultraviolet, strength, elasticity, softness, and yellowness are also investigated to study the changes in its physical properties. From the result, we can see, under the SEM, the sign of disappearance of woolen scales owing to the destruction by H 2 O 2 oxidization; the more H 2 O 2 and its oxidization temperature, the more serious their destruction. The phenomenon of crosslink is not obvious after oxidization and curing treatment with TiO 2 /chitosan, but it somehow apparently happens to the woolen surface. Because TiO 2 /chitosan does not intertwine with the woolen well, which has few effects of heat, the woolen shrinks less with more H 2 O 2 and oxidization temperatures. Its antishrinkage is better. But the more wash, the more shrinkage. However, TiO 2 covered with chitosan catches less sunlight, and thus cannot suppress or even kill microbes. The woolen processed with nanometer TiO 2 enhances the effect of antiultraviolet, which is better as the density of TiO 2 increases. The strength and elasticity of the woolen are worse for more H 2 O 2 and the higher temperature destroy scales and make the woolen coarse, yellow,and less soft.
The rapid capacity degradation of Ge-based materials hinders their practical application for next generation lithium ion batteries, which could be solved by synthesizing Ge-containing ternary oxides, with new structures and hybridizing with carbon nanomaterials. Herein, novel Ni3Ge2O5(OH)4 nanosheets were synthesized and distributed in situ on reduced graphene oxide (RGO) sheets, with both flat-lying and vertically-grown spatial distributions to imitate the growth of lotus leaves. These two types of Ni3Ge2O5(OH)4 nanosheets enhance their efficient contact with RGO, and increase the mass loading of active materials. Furthermore, the interfacial bonds between RGO sheets and Ni3Ge2O5(OH)4 nanosheets are introduced to improve the diffusion rate of lithium ions. The RGO sheets act as a buffer matrix to sustain the volume change and prevent the nanosheets from aggregation. Consequently, the chemically bonded Ni3Ge2O5(OH)4/RGO hybrid delivers a high specific capacity of 863 mA h g-1 over 75 cycles, which is much higher than those for neat Ni3Ge2O5(OH)4 nanosheets or the hybrid without the interfacial bonding. This study provides a novel perspective for designing high-performance Ge-based anode materials for advanced lithium ion batteries.
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