Li Shiju, Wang Haibei, Wang Shengdong, Xie Feng, Sun Xudong
School of Metallurgy, Northeastern University, Shenyang 110819, China; BGRIMM Technology Group, Beijing 100160, China.
BGRIMM Technology Group, Beijing 100160, China.
Ultrason Sonochem. 2025 Aug;119:107410. doi: 10.1016/j.ultsonch.2025.107410. Epub 2025 May 30.
In order to reduce the duration of the recovery process for indium from zinc oxide dust, an electrodeposition technique was employed, utilizing a hydrochloric acid stripping solution as the electrolyte. A study of the cyclic voltammetry-EQCM of conventionally electrodeposited indium and of ultrasound-assisted electrodeposition of indium was undertaken. The valence transition of conventionally electrodeposited indium was found to be In-In, In-In; that of ultrasound-assisted electrodeposition of indium is In-In-In, In-In. Furthermore, the Scharifker and Hills model underwent modification due to the negative values of the timed amperage curve currents, which resulted in the dimensionless processed timed amperage curve (j/j)-(t/t) conforming to the specification. Concurrently, it was determined that ultrasound-assisted electrodeposition has the capacity to impede the precipitation of hydrogen, chlorine, and trivalent arsenic on the cathode deposition. The chronoamperometric study demonstrated that conventional electrodeposition exhibited transient nucleation at deposition potentials of -0.75 V, -0.78 V, -0.80 V, and -0.82 V. Conversely, ultrasound-assisted electrodeposition manifested transient nucleation at deposition potentials of -0.75 V, -0.78 V, and -0.82 V, along with gradual nucleation at the -0.80 V potential. Furthermore, at the same electrodeposition potential, ultrasound-assisted electrodeposition resulted in greater nucleation density values (N) than conventional electrodeposition. Furthermore, ultrasound-assisted electrodeposition has been shown to enhance current efficiency. In addition, scanning electron microscopy with energy-dispersive spectroscopy (SEM-EDS) analysis has revealed that the indium deposited on the cathode exhibits high purity. Moreover, the surface morphology of the indium layer deposited by conventional electrodeposition is characterized by flocculent structures, while the indium layer deposited by ultrasound-assisted electrodeposition demonstrates a spherical morphology. This provides a novel concept for the large-scale production of indium sponge.
为了缩短从氧化锌粉尘中回收铟的过程持续时间，采用了一种电沉积技术，使用盐酸剥离溶液作为电解质。对常规电沉积铟和超声辅助电沉积铟进行了循环伏安 - 电化学石英晶体微天平（EQCM）研究。发现常规电沉积铟的价态转变为In - In、In - In；超声辅助电沉积铟的价态转变为In - In - In、In - In。此外，由于计时电流曲线电流为负值，对Scharifker和Hills模型进行了修正，使得无量纲处理后的计时电流曲线(j/j)-(t/t)符合规范。同时，确定超声辅助电沉积能够抑制氢、氯和三价砷在阴极沉积上的析出。计时电流研究表明，常规电沉积在 - 0.75 V、 - 0.78 V、 - 0.80 V和 - 0.82 V的沉积电位下表现出瞬时成核。相反，超声辅助电沉积在 - 0.75 V、 - 0.78 V和 - 0.82 V的沉积电位下表现出瞬时成核，在 - 0.80 V电位下表现出渐进成核。此外，在相同的电沉积电位下，超声辅助电沉积产生的成核密度值（N）比常规电沉积更大。此外，超声辅助电沉积已被证明能提高电流效率。另外，扫描电子显微镜与能量色散光谱（SEM - EDS）分析表明，沉积在阴极上的铟具有高纯度。而且，常规电沉积法沉积的铟层表面形貌具有絮状结构，而超声辅助电沉积法沉积的铟层呈现球形形貌。这为大规模生产海绵铟提供了一个新的概念。
