分析测试学报2025，Vol.44Issue(11)：2236-2244,9.DOI:10.12452/j.fxcsxb.25011533
V4+-V2O5/NC复合纳米酶制备及其可视化比色检测Mn2+的应用研究
Preparation of V4+-V2O5/NC Composite Nanozyme and Its Application in Visual Colorimetric Detection of Mn2+
摘要
Abstract
The objective of this study was to develop a rapid and straightforward visual colorimetric detection method for Mn2+.A V4+-incorporated V2O5/NC composite nanozyme(V4+-V2O5/NC,where NC represents nitrogen-doped carbon material)was successfully synthesized via a calcination pro-cess.The morphology,composition,and structure of the as-fabricated V4+-V2O5/NC were character-ized and analyzed in detail.This nanomaterial exhibited a rich porous structure and remarkable perox-idase-like activity(POD).Notably,the presence of V4+significantly enhances the catalytic activity of V2O5/NC,promoting the generation of superoxide radicals(·O2-)from H2O2,which subsequently oxi-dizes the colorless 3,3',5,5'-tetramethylbenzidine(TMB)into blue oxidized TMB(oxTMB).The introduction of Mn2+into the chromogenic system triggered complexation to convert the solution from blue to colorless.Leveraging this phenomenon,we developed a visual colorimetric detection method for Mn2+that offered high selectivity and sensitivity.A satisfactory linearity existed between Mn2+con-centration and 652 nm absorbance with a linear range of 0.01-50 μmol/L and a detection limit of 3.3 nmol/L.This colorimetric approach is both simple and cost-effective,thereby providing a viable and reliable solution for rapid Mn2+detection.关键词
V4+-V2O5/NC纳米酶/比色检测/Mn2+/H2O2Key words
V4+-V2O5/NC nanozyme/colorimetric detection/Mn2+/H2O2分类
化学引用本文复制引用
侯晓峰,马勤勤,沈思宇,公海龙,王学东,刘婷婷..V4+-V2O5/NC复合纳米酶制备及其可视化比色检测Mn2+的应用研究[J].分析测试学报,2025,44(11):2236-2244,9.基金项目
国家自然科学基金(22076134) （22076134）
江苏省科技厅重点研发项目(BE2022733) （BE2022733）
江苏省研究生实践创新计划(SJCX24_1895) （SJCX24_1895）
