Nanocomposites of PAn-DBSA/γ-Fe 2O 3 with electrical and ferromagnetic behavior(σ= 2.18×10 -3-5.00×10 -5 S/cm, M s=3.7-16.6 m 2·A/kg, H c=8 805.2-9 133.1 A/m) were prepared by a chemical modification-...Nanocomposites of PAn-DBSA/γ-Fe 2O 3 with electrical and ferromagnetic behavior(σ= 2.18×10 -3-5.00×10 -5 S/cm, M s=3.7-16.6 m 2·A/kg, H c=8 805.2-9 133.1 A/m) were prepared by a chemical modification-redoping method in a neutral medium. The products were characterized by TEM, XRD, UV-Vis, four-probe method, and magnetometer. The results indicate that the electrical and magnetic properties of the nanocomposites strongly depend on γ-Fe 2O 3 content. With the increase of γ-Fe 2O 3 content, the electrical conductivity is decreased and saturation magnetization is increased.展开更多
采用CeO2-TiO2复合物薄膜作为聚苯胺电致变色器件的对电极,选用聚合物固态电解质(PE:PMMA-PC-EC-L iC lO4),构筑了新型双层结构(Dual-type)聚苯胺(PANI)固态电致变色(EC)器件.用电化学现场紫外-可见光谱法表征了该EC器件(ITO|PANI||PE||...采用CeO2-TiO2复合物薄膜作为聚苯胺电致变色器件的对电极,选用聚合物固态电解质(PE:PMMA-PC-EC-L iC lO4),构筑了新型双层结构(Dual-type)聚苯胺(PANI)固态电致变色(EC)器件.用电化学现场紫外-可见光谱法表征了该EC器件(ITO|PANI||PE||CeO2-TiO2|ITO)的电致变色性能,并与单层结构(S ingle-type)EC器件(ITO|PANI||PE||ITO)进行了比较.研究结果表明,双层结构EC器件比单层结构EC器件的电致变色性能好,如响应速度快,循环寿命长.同时,考察了电解质组分对聚苯胺电致变色稳定性的影响.EC器件(ITO|PANI||PE||CeO2-TiO2|ITO)的颜色呈现由透明的黄色(-1.5 V,PANIvs.CeO2-TiO2)到蓝色(1.0 V)的可逆变化,在700 nm处的透射率由42.19%变到13.35%,经过150个循环,其透射率差仍保持不变,着色效率为152.1 cm2/C.展开更多
文摘Nanocomposites of PAn-DBSA/γ-Fe 2O 3 with electrical and ferromagnetic behavior(σ= 2.18×10 -3-5.00×10 -5 S/cm, M s=3.7-16.6 m 2·A/kg, H c=8 805.2-9 133.1 A/m) were prepared by a chemical modification-redoping method in a neutral medium. The products were characterized by TEM, XRD, UV-Vis, four-probe method, and magnetometer. The results indicate that the electrical and magnetic properties of the nanocomposites strongly depend on γ-Fe 2O 3 content. With the increase of γ-Fe 2O 3 content, the electrical conductivity is decreased and saturation magnetization is increased.
