Lakkaraju S, Bennahmias M J, Borges G L, Gordon Ii J G, Lazaga M, Stone B M, Ashley K
Appl Opt. 1990 Nov 20;29(33):4943-9. doi: 10.1364/AO.29.004943.
Optical second harmonic generation and quartz crystal microbalance techniques are used as in situ probes of copper underpotential deposition on polycrystalline gold surfaces in sulfuric acid electrolyte. The second harmonic signal from a polished bulk gold substrate is observed to decrease by >60% as a result of copper underpotential deposition on gold. Also, the mass of an underpotentially deposited copper adlayer is monitored in situ by an oscillating quartz crystal microbalance, yielding an estimated coverage of ~8.0 x 10(-10) mol cm(-2) and an electrosorption valency of 1.5 for a copper adlayer on the surface of vapor-deposited polycrystalline gold.
光学二次谐波产生和石英晶体微天平技术被用作原位探针，用于研究硫酸电解液中多晶金表面上铜的欠电位沉积。观察到，由于金上铜的欠电位沉积，抛光的块状金基底的二次谐波信号降低了60%以上。此外，通过振荡石英晶体微天平原位监测欠电位沉积的铜吸附层的质量，得出气相沉积多晶金表面上铜吸附层的估计覆盖度约为8.0×10(-10) mol cm(-2)，电吸附价为1.5。
