Bismuth Vanadate with Electrostatically Anchored 3D Carbon Nitride Nano‐networks as Efficient Photoanodes for Water Oxidation,ChemSusChem

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Bismuth Vanadate with Electrostatically Anchored 3D Carbon Nitride Nano‐networks as Efficient Photoanodes for Water Oxidation
ChemSusChem ( IF 7.5 ) Pub Date : 2018-07-16 , DOI: 10.1002/cssc.201801119
Peng Luan ₁ , Ying Zhang ₁ , Xiaolong Zhang ₁ , Zhijun Li ₂ , Ragesh Prathapan ₁ , Udo Bach ₃ , Jie Zhang ₁

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In this study, we report a photoanode consisting of a polymeric/inorganic nanojunction between novel nanostructured 3D C₃N₄ nano‐networks and BiVO₄ substrate. This nanojunction is formed such that 3D C₃N₄ nano‐networks with a positively charged surface are efficiently anchored on the BiVO₄ photoanode with a negatively charged surface. This electrostatic self‐assembly can initiate and contribute to an intimate contact at the interfaces, leading to an enhanced photoelectrochemical activity and stability compared with that fabricated by non‐electrostatic assembly. The C₃N₄ nano‐network/BiVO₄ photoanode achieved a remarkable photocurrent density of 4.87 mA cm⁻² for water oxidation at 1.23 V (vs. reversible hydrogen electrode) after depositing FeOOH/NiOOH as oxygen‐evolution co‐catalyst, which is among the highest photocurrent densities reported so far for BiVO₄‐based photoanodes.

中文翻译：

钒酸铋与静电锚固3D氮化碳纳米网络可作为有效的水氧化光阳极。

在这项研究中，我们报告了一个由新型纳米结构的3D C ₃ N ₄纳米网络和BiVO ₄衬底之间的聚合物/无机纳米结组成的光阳极。这种纳米结的形成是使带正电表面的3D C ₃ N ₄纳米网络有效地锚定在带负电表面的BiVO ₄光电阳极上。与非静电组装相比，这种静电自组装可引发并促进界面处的紧密接触，从而增强了光电化学活性和稳定性。C ₃ N ₄纳米网络/ BiVO ₄沉积FeOOH / NiOOH作为氧演化助催化剂后，光阳极在1.23 V（vs.可逆氢电极）上的水氧化过程中实现了4.87 mA cm ^-2的显着光电流密度，这是迄今为止BiVO报道的最高光电流密度基于₄的光阳极。

更新日期：2018-07-16

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