Catalytic hydrogen reduction appears to be a promising strategy for nitrate removal. However, the danger and low utilization of H₂ are the disadvantages of catalytic hydrogen reduction. Sodium borohydride (NaBH₄), considered a potential candidate for hydrogen storage, has been investigated as an electron source for the catalytic reduction of contaminants. However, extensive use of NaBH₄ makes commercialization costly and causes environmental pollution. In this study, we prepared supported Cu/Pd bimetallic nanoparticles that could prestore hydrogen. No additional reducing agent was required during the nitrate reduction process. The performance and mechanism of Cu/Pd bimetallic nanoparticles for nitrate reduction are discussed. Good performance was obtained with high reactivity (99.04% nitrate removal efficiency) and high selectivity for N₂ (94.71%). The Cu/Pd bimetallic catalyst could be recovered by NaBH₄ for 5 cycles. Moreover, a 97.49% nitrate removal efficiency was obtained for actual wastewater, indicating good prospects for nitrate reduction applications.

催化氢还原似乎是去除硝酸盐的有前途的策略。然而，H ₂的危险性和低利用率是催化氢还原的缺点。硼氢化钠 (NaBH ₄ ) 被认为是储氢的潜在候选者，已被研究作为催化还原污染物的电子源。然而，NaBH _{4 的}广泛使用使商业化成本高昂并造成环境污染。在这项研究中，我们制备了可以预储存氢的负载型 Cu/Pd 双金属纳米粒子。在硝酸盐还原过程中不需要额外的还原剂。讨论了Cu/Pd双金属纳米粒子还原硝酸盐的性能和机理。以高反应性（99.04% 硝酸盐去除效率）和高 N ₂选择性（94.71%）获得了良好的性能。Cu/Pd双金属催化剂可以通过NaBH ₄回收5个循环。此外，实际废水的硝酸盐去除效率为 97.49%，表明硝酸盐还原应用前景良好。