Active BiVO4 Swimmers Propelled by Depletion Gradients Caused by Photodeposition,Small

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Active BiVO4 Swimmers Propelled by Depletion Gradients Caused by Photodeposition
Small ( IF 13.0 ) Pub Date : 2023-01-22 , DOI: 10.1002/smll.202206885
Martin Wittmann ₁ , Maximilian Voigtmann ₁ , Juliane Simmchen _{1,

2}

Affiliation

Artificial active matter often self-propels by creating gradients of one or more species or quantities. For chemical swimmers, most frequently either O₂ or H⁺ that are created in certain catalytic reactions are causing the interfacial flows which drive the self-propulsion. While the palette of reactions is extending constantly, especially toward more bio-compatible fuels, the depletion of species is often overlooked. Here, the photodeposition of metal species on BiVO₄ micro swimmers is considered. During the photodeposition reaction, metal ions are removed from the solution creating a depleted region around the particle. The ability of this depletion to drive active motion of artificial micro swimmers, as well as the influences of different metal ions and counter ions on the motion are investigated and cross compared.

中文翻译：

由光沉积引起的耗尽梯度推动的活跃 BiVO4 游泳者

人造活性物质通常通过产生一种或多种物质或数量的梯度来自我推进。对于化学游泳者来说，最常见的是在某些催化反应中产生的 O ₂或 H ⁺会引起界面流动，从而驱动自推进。虽然反应的范围不断扩大，尤其是向生物相容性更强的燃料发展，但物种的枯竭往往被忽视。在此，金属物质在 BiVO _{4上的光沉积}微型游泳运动员被认为是。在光沉积反应过程中，金属离子从溶液中去除，在粒子周围形成耗尽区。研究并交叉比较了这种耗尽驱动人造微型游泳运动员主动运动的能力，以及不同金属离子和抗衡离子对运动的影响。

更新日期：2023-01-22

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