Facile preparation of gold nanoparticles anchored on layered yttrium hydroxide by electrochemical methods for enhanced sensing of hydroquinone and catechol

作者：Zhang, Yuhan; Du, Xinle; Mao, Jianming; He, Shuai; Cao, Zhenbo^*

来源：Materials Chemistry and Physics, 2024, 311: 128526.

DOI：10.1016/j.matchemphys.2023.128526

• Au nanoparticle
• Layered metal hydroxide
• Electrosynthesis
• Electrochemical sensing

Gold nanoparticles (AuNPs) have emerged as highly competitive catalysts. However, the precise regulation of intrinsic structural parameters that account for the activity of AuNPs remains a challenge in designing high-performance electrocatalysts. Herein, the layered yttrium hydroxide (LYH) nanosheets supported AuNPs are prepared via a facile electrochemical deposition method. The tunability of morphology in LYH support and their utilization in controlling the growth of small AuNPs with uniform dispersion are emphasized. Finally, a novel sensor is constructed using flower-like AuNPs/LYH modified electrodes, which allows for simultaneous determination of the dihydroxybenzene isomers hydroquinone and catechol with good sensitivity, reproducibility and stability. The excellent performance can be attributed to the synergistic effects between AuNPs and LYHs. The strategy of depositing gold onto LYH nanosheets and the resulting high performance provide new approaches for further developing highly efficient composite electrodes across a wide range of applications.

• 单位
  桂林理工大学