In the present work, we report a simple and facile templateless electrodeposition of hierarchical flowerlike gold microstructure which was synthesized by using a chronoamperometric (CA) i–t curve technique at a constant applied potential of E = 0.5 V with respect to sat Ag/AgCl (KCl) on indium tin oxide electrode (ITO) substrate. The surface morphology, elemental composition and the preferred orientation of gold microflowers (AuMFs) were characterized using scanning electron microscopy (SEM) and X–ray photoelectron spectroscopy (XPS) analyses. The SEM images of the as-prepared AuMFs resembled nanoflakes which are building block for the formation of a three dimensional hierarchical flower–like morphology. Surface elemental composition and valence state of AuMFs is further examined by X–ray photoelectron spectroscopy (XPS). The electrochemical oxidation behavior of AuMFs was investigated by using Cyclic Voltammetry (CV) and chronoamperometric CA techniques with the H₂O₂ analyst in 0.1 M phosphate buffer solution (pH 7.4). The AuMFs deposited ITO electrodes exhibited excellent electrocatalytic reactivity towards H₂O₂ oxidation due to the increase of in adsorption of H₂O₂ on gold–oxide surfaces and it was enhancing the amperometric sensing of H₂O₂ in neutral solutions.

在当前的工作中，我们报告了一种简单而简便的无模板的花状金微结构电沉积方法，该方法是通过使用计时安培（CA）i–t曲线技术在恒定的E施加电势下合成的 相对于铟锡氧化物电极（ITO）衬底上的饱和Ag / AgCl（KCl）= 0.5V。使用扫描电子显微镜（SEM）和X射线光电子能谱（XPS）分析来表征金微花（AuMFs）的表面形态，元素组成和首选取向。所制备的AuMFs的SEM图像类似于纳米片，它们是形成三维分层花状形态的基础。通过X射线光电子能谱（XPS）进一步检查了AuMFs的表面元素组成和化合价态。通过循环伏安法（CV）和计时安培CA技术以及H ₂ O ₂研究了AuMFs的电化学氧化行为。分析人员使用0.1 M磷酸盐缓冲溶液（pH 7.4）。由于在金氧化物表面上H ₂ O _2的吸附增加，AuMFs沉积的ITO电极对H ₂ O _2的氧化表现出优异的电催化反应性，并且增强了中性溶液中H ₂ O ₂的安培感测。