Yang Yuxin, Zeng Haoyue, Wang Daiyi, Wu Yujian, Chen Jiaqi, Huang Yanyan, Wang Pan, Feng Wei
School of Mechanical Engineering, Chengdu University, Chengdu610000, PR China.
Langmuir. 2023 Feb 28;39(8):3045-3051. doi: 10.1021/acs.langmuir.2c03069. Epub 2023 Feb 15.
Fractal dendrites are extensively observed in industry, especially in the electrochemical deposition process. The fractal dendrite electrodeposition behavior of quasi-two-dimensional Cu (Q2D-Cu) metal based on the wire is examined via direct electrodeposition using a thin layer reactor. Here, to explain the fractal growth mechanism, the directional migration and random walking of ions are introduced in the traditional diffusion-limited aggregation model, and fractal patterns consistent with the experimental results are successfully simulated. In addition, the Cu fractal dendrite structure is finely adjusted by varying electrodeposition conditions, demonstrating its great potential for further optimization. The CuO/Q2D-Cu fractal dendrite photothermal device fabricated through in situ assembly of CuO nanowires on Cu fractal dendrite has good photothermal conversion ability. Therefore, metal fractal dendrites, which are considered harmful in the electroplating industry, have application prospects in the photothermal field.
分形枝晶在工业中广泛存在，尤其是在电化学沉积过程中。通过使用薄层反应器进行直接电沉积，研究了基于金属丝的准二维铜（Q2D-Cu）的分形枝晶电沉积行为。在此，为了解释分形生长机制，在传统的扩散限制聚集模型中引入了离子的定向迁移和随机游动，并成功模拟出与实验结果一致的分形图案。此外，通过改变电沉积条件对铜分形枝晶结构进行了精细调控，显示出其进一步优化的巨大潜力。通过在铜分形枝晶上原位组装氧化铜纳米线制备的CuO/Q2D-Cu分形枝晶光热器件具有良好的光热转换能力。因此，在电镀工业中被认为有害的金属分形枝晶在光热领域具有应用前景。
