Porous ZnO nanosheets with different thickness were prepared on zinc substrate by air cold plasma for photocatalytic degradation and photoelectrochemical water splitting. The ZnO nanosheets consisted of nanocrystallines with high-density oxygen-related defects characterized by the strong red luminescence. The UV absorption tended to be saturated as the thickness increased, and the saturation occurred at a thickness of about 2.3 μm. Under UV irradiation (365 nm), the 2.3 μm thick sample with higher content of oxygen vacancies and oxygen interstitials showed the highest photocatalytic activity (and higher than P25 TiO₂) in degradation of gaseous ethyl acetate. Due to the excellent UV–vis absorption ability and the effective transfer of photogenerated carriers, the ZnO nanosheets with thickness of 3.3 μm showed a photocurrent density as high as 0.22 mA cm⁻² at −0.28 V (versus Ag/AgCl) under AM 1.5 G 100 mW cm⁻².

通过空气冷等离子体在锌基体上制备了不同厚度的多孔氧化锌纳米片，用于光催化降解和光电化学分解水。ZnO 纳米片由具有高密度氧相关缺陷的纳米晶体组成，其特征是强烈的红色发光。紫外吸收倾向于随着厚度增加至饱和，饱和发生的厚度的约2.3 μ米。在紫外线照射（365 nm）下，具有较高氧空位和氧间隙含量的 2.3 μ m 厚的样品表现出最高的光催化活性（并且高于 P25 TiO ₂) 降解气态乙酸乙酯。由于优异的紫外可见吸收能力和光生载流子的有效转移，厚度为 3.3 μm的 ZnO 纳米片在 AM 下在 -0.28 V（相对于 Ag/AgCl）下显示出高达 0.22 mA cm ^-2的光电流密度1.5 G 100 mW cm ^-2。