CAJ | 학술논문

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。
용액중초산근적검측시생태배경보호중극대해결적수요문제。용경기포모판법통과조절침적시간제비출료계렬대초산근구유량호전화학전감작용적고밀도납미동족재료。통과능보분석、소묘전경관찰화전화학성능측시대해계렬납미동족적성분、상결구、형모화최화성능진행료측정。연구결과표명，침적시간시영향납미동족재료전감성능적중요인소。통과우화침적시간，가이획득납미지정화대량납미과립복합적결구，해결구대초산근구유교강적전감신호，차재00．3～15． mmol／L 적 NO3－1농도범위내환원봉전류밀도여초산근리자농도성선성관계。
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 .