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Hierarchical mesoscale assembly of PbO2 on 3D titanium felt/TiO2 nanotubular array electrode for anodic decolourisation of RB-5 dye
Advances in Natural Sciences: Nanoscience and Nanotechnology ( IF 1.7 ) Pub Date : 2020-09-25 , DOI: 10.1088/2043-6254/abb93b
C Harito 1 , S Z J Zaidi 2 , D V Bavykin 2 , A S Martins 2, 3 , B Yuliarto 4, 5 , F C Walsh 2 , C Ponce de Len 2
Affiliation  

Hierarchical PbO2 nanoparticles (NPs) were grown by hydrothermal method on TiO2 nanotubes (NTs) at 3D titanium felt, which is simple and scalable method. TiO2 NTs were formed on titanium felt by anodising at 25 C in environmentally friendly methanesulphonic acid solution. The growth of PbO2 on the TiO2 NTs depended on immersion time during hydrothermal synthesis and followed a LaMer-Dinegar burst kinetic model of nucleation and growth. PbO2 formation began with rapid nucleation, followed by mesoscale assembly due to organic capping of poly(vinylpyrrolidinone). The electrochemical performance of 3D electrode was recorded in pH 3 sodium sulphate solutions containing Reactive Black 5 (RB-5) azo dye at 25 C. The resulting hierarchical 3D electrode achieved 98% decolourisation after 50 min of anodic oxidation with a first order batch decay rate of 0.0875 min−1.



中文翻译:

PbO 2在 3D 钛毡/TiO 2纳米管阵列电极上的分级中尺度组装,用于 RB-5 染料的阳极脱色

通过水热法在 3D 钛毡上的 TiO 2纳米管 (NTs)上生长分层 PbO 2纳米粒子 (NPs) ,这是一种简单且可扩展的方法。通过在环境友好的甲磺酸溶液中在 25°C 下进行阳极氧化,在钛毡上形成了TiO 2 NTs。PbO 2在 TiO 2 NTs上的生长取决于水热合成过程中的浸泡时间,并遵循成核和生长的 LaMer-Dinegar 爆发动力学模型。氧化铅2形成开始于快速成核,然后由于聚(乙烯基吡咯烷酮)的有机封端而进行中尺度组装。3D 电极的电化学性能在含有活性黑 5 (RB-5) 偶氮染料的 pH 3 硫酸钠溶液中记录,温度为 25°C。所得分级 3D 电极在阳极氧化 50 分钟后实现了 98% 的脱色,并具有一级批衰减0.0875 min -1 的速率。

更新日期:2020-09-25
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