过氧化氢在工业、医疗和污水处理等多领域具有重要的应用价值. 本研究采用水相合成法成功制备了NiTe纳米材料. 研究结果表明, 以氧气和纯水为原料, 采用多孔阳离子交换树脂作为介导的固态电解质器件中, 在电位为0.31 V (vs. RHE)时, H₂O₂法拉第效率高达85%, 在200 mV电位窗口内保持法拉第效率超过80%. 此外, 在0.11 V (vs. RHE)时, H₂O₂产率可达4334.39 mmol•h^-1•g^-1. NiTe催化剂中Te的电子结构调控效应, 结合富含的晶界和缺陷位点, 以及小尺寸和多孔的复合结构, 为其提供了理想的活性中心和优异的结构基础. 固态电解质器件的应用不仅显著降低成本和操作风险, 还能直接生产纯净的过氧化氢溶液, 提高生产效率. 该研究为氧气高效电还原产过氧化氢提供了新思路.

Hydrogen peroxide has significant applications across various sectors, including industry, healthcare, and wastewater treatment. NiTe nanomaterial has been synthesized using a facile aqueous-phase method in this work. Specifically, 5 mmol of nickel acetate tetrahydrate (Ni(CH₃COO)₂•4H₂O) was dissolved in deionized water and reacted with 10 mmol of tartaric acid to form solution A. Simultaneously, 5 mmol of tellurium dioxide powder was heated in 10 mmol of ammoniated tartaric acid to prepare solution B. Both solution A and B were adjusted to a pH value of 10. Solution B was gradually introduced into solution A under continuous agitation to ensure homogeneous mixing. Subsequently, 7.5 mmol of sodium borohydride (NaBH₄) was added to the mixture under vigorous mechanical stirring, resulting in the formation of a black NiTe precipitate. The research results indicate that, using oxygen and pure water as raw materials, and employing porous cation exchange resins as solid-state electrolyte in the electrolyzer, the Faradaic efficiency of H₂O₂ reaches 85% at a potential of 0.31 V (vs. RHE) and maintains a Faradaic efficiency of over 80% within a potential window of 200 mV. Additionally, at 0.11 V (vs. RHE), the H₂O₂ production rate can reach 4334.39 mmol•h^-1•g^-1. In stability assessments, the NiTe catalyst exhibited continuous and stable H₂O₂ production for over 6 h. The electronic structure modulation effect of Te in the NiTe catalyst, combined with abundant grain boundaries and defect sites, as well as the small particle size and hybrid porous structure, provides ideal active centers and excellent structural foundation, which endows NiTe with excellent catalytic performance. The application of solid-state electrolyte devices not only significantly reduces costs and operational risks but also enables the direct production of pure hydrogen peroxide solution, thereby improving production efficiency. This research offers a new approach for the efficient electrochemical production of hydrogen peroxide from oxygen.