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引用本文:   朱巍然, 郝楠, 杨小弟, 王坤. 基于二氧化锰-氧掺杂氮化碳级联催化的无酶比色检测葡萄糖研究. 分析化学, 2020, 48(6): 727-732. doi:  10.19756/j.issn.0253-3820.201047 [复制]

Citation:   ZHU Wei-Ran , HAO Nan , YANG Xiao-Di , WANG Kun . Cascade-catalyzed Enzyme-free Colorimetric Detection of Glucose Based on Manganese Dioxide-oxygen Doped Carbon Nitride Composites. Chinese Journal of Analytical Chemistry, 2020, 48(6): 727-732. doi: 10.19756/j.issn.0253-3820.201047 [复制]

基于二氧化锰-氧掺杂氮化碳级联催化的无酶比色检测葡萄糖研究

收稿日期: 2020-01-17

基金项目: 本文系国家自然科学基金项目(Nos.21575067,21675066)资助

Cascade-catalyzed Enzyme-free Colorimetric Detection of Glucose Based on Manganese Dioxide-oxygen Doped Carbon Nitride Composites

Received Date:  2020-01-17

Fund Project:  This work was supported by the National Natural Science Foundation of China (Nos. 21675066, 21575067).

基于二氧化锰(MnO2)-氧掺杂氮化碳(OCN)复合材料,构建了一种级联催化无酶比色葡萄糖传感器。通过在OCN的分散液中化学沉淀MnO2晶体制备得到MnO2-OCN复合材料。单体MnO2具有优异的类葡萄糖氧化酶活性,能够催化葡萄糖分解产生H2O2,但类过氧化物酶活性较弱,无法充分消耗反应产生的H2O2。通过引入OCN,利用其优异的类过氧化物酶活性,可以显著促进H2O2对底物的催化氧化,使溶液变色,显著改善了对葡萄糖的检测性能。基于MnO2-OCN复合材料构建的无酶比色传感器拥有较宽的检测范围(0.05~2.00 mmol/L),检出限为23 μmol/L(S/N=3)。将此传感器用于血清样品中葡萄糖的检测,加标回收率为91.9%~94.3%。由于MnO2和OCN两种材料对底物有较强的专一性,此传感器特异性识别催化葡萄糖,特异性良好。

关键词:   二氧化锰, 氧掺杂氮化碳, 葡萄糖, 比色法, 无酶检测
Key words:   Manganese dioxide, Oxygen doped carbon nitride, Glucose, Colorimetric, Enzyme-free detection
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基于二氧化锰-氧掺杂氮化碳级联催化的无酶比色检测葡萄糖研究

朱巍然, 郝楠, 杨小弟, 王坤

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