The formation of precipitation under the action of a direct current atmospheric pressure discharge in air on a copper (II) nitrate solution was investigated. The discharge was excited by applying a high voltage to two pointed titanium electrodes placed above the liquid anode and liquid cathode in the H-shaped cell. The one of the advantages of such design is the absence of the contact of the electrodes and liquid phase that can affect on the precipitation composition. The studies were carried out at initial concentrations of 0.005 and 0.1 mol·L⁻¹ of Cu(NO₃)₂ and discharge currents from 30 to 70 mA. Under the discharge action of the discharge, the formation of colloidal solutions occurs only in the anode part of the discharge. Turbidimetry kinetic measurements showed that the process includes two stages. In the first stage (slow), insoluble copper compounds are formed, the coagulation of which and an increase in concentration leads to the second stage (fast). When the precipitate is calcined, crystalline monoclinic CuO is formed. The size of the aggregates of the sediment particles was less than 1 μm. It is assumed that the process is initiated by solvated electrons generated in the anodic part of the discharge. Their reactions with water molecules lead to the formation of hydroxide ions. These ions, reacting with copper ions, lead to the formation of their insoluble hydroxo compounds.

研究了在空气中直流大气压放电作用下硝酸铜 (II) 溶液上沉淀的形成。通过向放置在 H 形电池中的液体阳极和液体阴极上方的两个尖头钛电极施加高电压来激发放电。这种设计的优点之一是不存在会影响沉淀组成的电极和液相的接触。这些研究是在 0.005 和 0.1 mol·L ^-1的 Cu(NO ₃ ) ₂初始浓度下进行的和放电电流从 30 到 70 mA。在放电的放电作用下，胶体溶液的形成只发生在放电的阳极部分。浊度动力学测量表明该过程包括两个阶段。在第一阶段（缓慢），形成不溶性铜化合物，其凝结和浓度增加导致第二阶段（快速）。当沉淀物被煅烧时，形成结晶单斜晶CuO。沉积物颗粒的聚集体尺寸小于1μm。假设该过程是由放电阳极部分产生的溶剂化电子引发的。它们与水分子的反应导致氢氧根离子的形成。这些离子与铜离子反应，导致形成不溶性羟基化合物。