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首页> 外文期刊>Chemistry: A European journal >Electrochromic hysteresis performance of a Prussian blue film arising from electron-transfer control by a tris(2,2 '-bipyridine)ruthenium(II)-doped WO3 film as studied by a spectrocyclic voltammetry technique
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Electrochromic hysteresis performance of a Prussian blue film arising from electron-transfer control by a tris(2,2 '-bipyridine)ruthenium(II)-doped WO3 film as studied by a spectrocyclic voltammetry technique

机译：由三（2,2'-联吡啶）钌（II）掺杂的WO3薄膜进行电子转移控制而引起的普鲁士蓝薄膜的电致变色滞后性能

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摘要

A [Ru(bpy)(3)](2+) (bpy=2,2'-bipyridine)-doped WO3 film was prepared as a base layer on a substrate by cathodic electrodeposition from a colloidal triad solution containing peroxotungstic acid (PTA), [Ru(bpy)(3)](2+), and poly(sodium 4-styrenesulfonate) (PSS). A Prussian blue (PB; Fe-II-Fe-III) film was cathodically electrodeposited on the [Ru(bpy)3]21 -doped WO3 film or neat WO3 film from an aqueous Berlin brown (BB; Fe-III-Fe-III.) colloid solution to yield a [Ru(bpy)(3)](2+)-doped WO3/PB bilayer film or WO3/PB bilayer film. For the spectrocyclic voltammogram (SCV) of the WO3/PB film, a redox response of Prussian white (PW; (FeFeII)-Fe-II)/PB was observed at 0.11 V, however, further oxidation of PB to BB was not allowed by the interfacial n-type Schottky barrier between the WO3 and PB layers. For the [Ru(bpy)(3)](2+)-doped WO3/PB film, any electrochemical response assigned to the redox of PB was not observed in the cyclic voltammogram, however, the in situ absorption spectral change recorded simultaneously showed the significant redox reactions based on PB. The SCV revealed that PW on the [Ru(bpy)3]2+ -doped WO3 film is completely oxidized to PB by a geared reaction of Ru-II/Ru-III at 1.05 V, and that 32 % of PB formed is further oxidized to BB by the same geared reaction in the potential scan to 1.5 V PB was completely re-reduced to PW by a geared reaction of HxWO3/WO3 at -0.5 V in the reductive potential scan. These geared electrochemical reactions produced an electrochromic hysteresis performance of the PB film layered on the [Ru(bpy)(3)](2+)-doped WO3 film.
机译：通过阴极电沉积，由含有过氧钨酸（PTA）的胶体三元组溶液制备[Ru（bpy）（3）]（2+）（bpy = 2,2'-联吡啶）掺杂的WO3膜作为基底层的基础层），[Ru（bpy）（3）]（2+）和聚（4-苯乙烯磺酸钠）（PSS）。将一种普鲁士蓝（PB; Fe-II-Fe-III）膜阴极沉积在柏林水成棕（BB; Fe-III-Fe-）的[Ru（bpy）3] 21掺杂的WO3膜或纯WO3膜上。 III。）胶体溶液以产生[Ru（bpy）（3）]（2+）掺杂的WO3 / PB双层膜或WO3 / PB双层膜。对于WO3 / PB膜的光谱循环伏安图（SCV），在0.11 V时观察到普鲁士白（PW;（FeFeII）-Fe-II）/ PB的氧化还原响应，但是不允许PB进一步氧化为BB通过WO3和PB层之间的界面n型肖特基势垒。对于[Ru（bpy）（3）]（2+）掺杂的WO3 / PB膜，在循环伏安图中未观察到任何与PB氧化还原有关的电化学反应，但是，同时记录的原位吸收光谱变化表明基于PB的重要氧化还原反应。 SCV显示[Ru（bpy）3] 2+掺杂的WO3膜上的PW通过Ru-II / Ru-III在1.05 V的齿轮反应完全氧化为PB，并且进一步形成了32％的PB在电位扫描中通过相同的齿轮反应被氧化为BB氧化为BB到1.5 V PB在还原电位扫描中被HxWO3 / WO3在-0.5 V的齿轮反应完全还原为PW。这些齿轮化的电化学反应产生了在[Ru（bpy）（3）]（2+）掺杂的WO3薄膜上分层的PB薄膜的电致变色滞后性能。

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