溶液中硝酸根的检测是生态环境保护中亟待解决的首要问题。用氢气泡模板法通过调节沉积时间制备出了系列对硝酸根具有良好电化学传感作用的高密度纳米铜簇材料。通过能谱分析、扫描电镜观察和电化学性能测试对该系列纳米铜簇的成分、相结构、形貌和催化性能进行了测定。研究结果表明，沉积时间是影响纳米铜簇材料传感性能的重要因素。通过优化沉积时间，可以获得纳米枝晶和大量纳米颗粒复合的结构，该结构对硝酸根具有较强的传感信号，且在00．3～15． mmol／L 的 NO3－1浓度范围内还原峰电流密度与硝酸根离子浓度成线性关系。
The determination of the nitrate concentration was one of the key issues for the conservation and im‐provement of the ecological environment .This work reported the formation of copper nanoclusters which had high catalytic activity towards the electrochemical reduction of the nitrate .The results showed that the deposi‐ting time played an import role on the structure and catalytic performance of the copper nanoclusters .30 s of deposition leads to the strongest current signal and a good linear relationship between the current density and the nitrate concentration in a wide nitrate concentration range from 0 0.3 to 1 5. mmol/L .
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