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聚亚甲基蓝变色膜的制备及其变色性能研究 被引量:2
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作者 赫春香 张凤 《辽宁师范大学学报(自然科学版)》 CAS 2009年第4期473-476,共4页
用电化学沉积方法制备了1种电致变色膜——聚亚甲基蓝膜,探索了制备该膜的最佳条件并测试了薄膜的电致变色性能.结果表明:在含有2.00×10-3mol/L硼砂和0.1 mol/L NaNO3的磷酸盐缓冲溶液中(pH 11.00),保持60℃恒温,在+0.80 V处恒电... 用电化学沉积方法制备了1种电致变色膜——聚亚甲基蓝膜,探索了制备该膜的最佳条件并测试了薄膜的电致变色性能.结果表明:在含有2.00×10-3mol/L硼砂和0.1 mol/L NaNO3的磷酸盐缓冲溶液中(pH 11.00),保持60℃恒温,在+0.80 V处恒电位电解40 min,可以使亚甲基蓝单体在ITO导电玻璃上聚合成聚亚甲蓝膜;在±0.8 V电位范围内,膜颜色可在蓝色和无色间可逆变化,在618 nm处的透过率之差(ΔT)可达60%,薄膜具有很快的电变色速度,着色效率(CE)为182.6 cm2/C. 展开更多
关键词 聚亚基蓝 变色性能 透过率 着色效率
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One-pot synthesis of poly vinyl alcohol(PVA) supported silver nanoparticles and its efficiency in catalytic reduction of methylene blue 被引量:1
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作者 P.SAGITHA K.SARADA K.MURALEEDHARAN 《Transactions of Nonferrous Metals Society of China》 SCIE EI CAS CSCD 2016年第10期2693-2700,共8页
Stable silver nanoparticles were synthesized using polyvinyl alcohol (PVA) as reducing and capping agent. The method of steric stabilization was adopted for the incorporation of silver nanoparticles in the polymer m... Stable silver nanoparticles were synthesized using polyvinyl alcohol (PVA) as reducing and capping agent. The method of steric stabilization was adopted for the incorporation of silver nanoparticles in the polymer matrix. The successful incorporation of silver nanoparticles in a PVA matrix was confirmed by UV–Visible spectroscopy, transmission electron microscopy (TEM) and Fourier transform infrared (FT-IR) spectroscopy. The synthesized silver nanoparticles were characterized by a peak at 426 nm in the UV–Vis spectrum. TEM studies showed the formation of spherical shaped silver nanoparticles of 10-13 nm, following the reduction by UV irradiation. Catalytic properties were studied by means of UV-Visible spectroscopic analysis. The synthesized silver nanoparticles exhibited good catalytic properties in the reduction of methylene blue. 展开更多
关键词 PVA supported silver nanoparticles dye degradation reduction of methylene blue catalytic reduction
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