Nanomaterials exhibiting mimetic enzyme activity are promising candidates for colorimetric detection of chlorpyrifos.Herein,lignin-based FeN/C nanozymes(FeN/CNs)with peroxidase-like activity were synthesized by a one-...Nanomaterials exhibiting mimetic enzyme activity are promising candidates for colorimetric detection of chlorpyrifos.Herein,lignin-based FeN/C nanozymes(FeN/CNs)with peroxidase-like activity were synthesized by a one-pot method.Within the material,the nitrogen mainly exists as pyrrolyl nitrogen,which coordinates with iron to form an Fe-N structure that serves as the active site.The sensor incorporates acetylcholinesterase(AChE)to facilitate the restoration of oxidized 3,3',5',5'-tetramethylbenzidine(TMB),thereby restoring the blue solution to a color⁃less state.Furthermore,the presence of chlorpyrifos was found to inhibit AChE activity,causing the solution to turn blue again.A sensitive colorimetric method for chlorpyrifos has been established.The linear range of this method for the detection of chlorpyrifos was 0.90-80.00μg·g^(-1) and the limit of detection(LOD)was 0.13μg·g^(-1).When applied to real samples,the method achieved recoveries of 94.4%-109%for chlorpyrifos in soil,and relative standard devia⁃tions(RSD)of the assay were 3.6%-4.2%.Therefore,the constructed sensor holds significant potential for the reli⁃able detection of chlorpyrifos.展开更多
Recent progress in nanotechnology has provided high-performance nanomaterials for enzyme immobilization.Nanobiocatalysts combining enzymes and nanocarriers are drawing increasing attention because of their high cataly...Recent progress in nanotechnology has provided high-performance nanomaterials for enzyme immobilization.Nanobiocatalysts combining enzymes and nanocarriers are drawing increasing attention because of their high catalytic performance,enhanced stabilities,improved enzyme-substrate affinities,and reusabilities.Many studies have been performed to investigate the efficient use of cellulose nanocrystals,polydopamine-based nanomaterials,and synthetic polymer nanogels for enzyme immobilization.Various nanobiocatalysts are highlighted in this review,with the emphasis on the design,preparation,properties,and potential applications of nanoscale enzyme carriers and nanobiocatalysts.展开更多
基金The Fundamental Research Funds for the Central Universities(2572022DJ01)Natural Science Foundation of Heilongjiang Province(LH2022B002)。
文摘Nanomaterials exhibiting mimetic enzyme activity are promising candidates for colorimetric detection of chlorpyrifos.Herein,lignin-based FeN/C nanozymes(FeN/CNs)with peroxidase-like activity were synthesized by a one-pot method.Within the material,the nitrogen mainly exists as pyrrolyl nitrogen,which coordinates with iron to form an Fe-N structure that serves as the active site.The sensor incorporates acetylcholinesterase(AChE)to facilitate the restoration of oxidized 3,3',5',5'-tetramethylbenzidine(TMB),thereby restoring the blue solution to a color⁃less state.Furthermore,the presence of chlorpyrifos was found to inhibit AChE activity,causing the solution to turn blue again.A sensitive colorimetric method for chlorpyrifos has been established.The linear range of this method for the detection of chlorpyrifos was 0.90-80.00μg·g^(-1) and the limit of detection(LOD)was 0.13μg·g^(-1).When applied to real samples,the method achieved recoveries of 94.4%-109%for chlorpyrifos in soil,and relative standard devia⁃tions(RSD)of the assay were 3.6%-4.2%.Therefore,the constructed sensor holds significant potential for the reli⁃able detection of chlorpyrifos.
基金supported by the National Natural Science Foundation of China(21336002,21222606,21376096)the Key Program of Guangdong Natural Science Foundation(S2013020013049)+2 种基金the Fundamental Research Funds for the Chinese Universities(2015PT002,2015ZP009)the Program of State Key Laboratory of Pulp and Paper Engineering(2015C04)the South China University of Technology Doctoral Student Short-Term Overseas Visiting Study Funding Project~~
文摘Recent progress in nanotechnology has provided high-performance nanomaterials for enzyme immobilization.Nanobiocatalysts combining enzymes and nanocarriers are drawing increasing attention because of their high catalytic performance,enhanced stabilities,improved enzyme-substrate affinities,and reusabilities.Many studies have been performed to investigate the efficient use of cellulose nanocrystals,polydopamine-based nanomaterials,and synthetic polymer nanogels for enzyme immobilization.Various nanobiocatalysts are highlighted in this review,with the emphasis on the design,preparation,properties,and potential applications of nanoscale enzyme carriers and nanobiocatalysts.
