A novel nanomaterial (L-Cu&Mn-nZVFe@B) was synthesized and was applied to nitrate selective reduction under UV irradiation and persulfate activation in the presence of oxalic acid. Results denoted the deposition of copper could prompt the nitrate conversion and improve the nitrate conversion significantly. The high nitrate conversion was on account of the formation of galvanic cells accelerating the generation of electrons, in which Fe° acted as anode and Cu° acted as cathode. Meanwhile, the coexistence of Cu₂O and MnO₂ exhibited excellent photocatalytic performance with the obvious improvement of N₂ selectivity because of the formation of heterojunction could boost the generation of CO₂⁻. Furthermore, the deposition of manganese could also accelerate the generation of CO₂⁻ through the activation of persulfate. The conversion of NO₃⁻ was almost 100 % and the N₂ selectivity could reach 81.57 % by the S₂O₈^2―/UV/L-Cu&Mn-nZVFe@B/H₂C₂O₄ system when the initial nitrate concentration was 100 mg /L, the L-Cu&Mn-nZVFe@B dosage was 6.0 g/L, the H₂C₂O₄ dosage was 15 mmol/L, pH was 5.0, the reaction time was 100 min under 25 °C. Research provides an alternative approach for selective reduction nitrate into nitrogen.

合成了一种新型的纳米材料（L-Cu＆Mn-nZVFe @ B），并将其应用于草酸存在下的紫外线辐射下的硝酸盐选择性还原和过硫酸盐活化。结果表明铜的沉积可以促进硝酸盐转化并显着提高硝酸盐转化率。较高的硝酸盐转化率是由于形成了加速电子生成的原电池，其中Fe°充当阳极，而Cu°充当阴极。同时，将Cu共存₂ O和MnO的₂显示出优异的光催化性能以N的明显的改进₂选择性，因为形成异质结的可能促进CO的产生的₂ ^-。此外，锰的沉积还可能加快CO的生成₂ ^-通过过硫酸盐的活化。NO转化₃ ^-几乎100％和N ₂选择性可以由S达到81.57％₂ ö ₈ ^{2- /} UV / L铜和锰nZVFe @ B / H ₂ ç ₂ Ò ₄系统的初始硝酸盐浓度时为100 mg / L，L-Cu＆Mn-nZVFe @ B用量为6.0 g / L，H ₂ C ₂ O ₄用量为15 mmol / L，pH为5.0，在25°C下反应时间为100分钟。研究提供了将硝酸盐选择性还原为氮的替代方法。