title: Iron-substituted SBA-15 microparticles: a peroxidase-like catalyst for H2O2 detection.
abstract: In this communication, we demonstrate our recent finding that iron-substituted SBA-15 (Fe-SBA-15) microparticles possess intrinsic peroxidase-like activity and can catalyze the oxidation of peroxidase substrate 3,3',5,5'-tetramethylbenzidine (TMB) by H(2)O(2) to develop a blue color in aqueous solution, leading to a simple approach towards colorimetric detection of H(2)O(2) with a linear detection range from 0.4 μM to 15 μM (r = 0.997) and a detection limit of 0.2 μM.
authors.affiliation: State Key Lab of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, 130022, Jilin, China.
authors.forename: Sen
authors.initials: S
authors.lastname: Liu
authors.forename: Jingqi
authors.initials: J
authors.lastname: Tian
authors.forename: Lei
authors.initials: L
authors.lastname: Wang
authors.forename: Yonglan
authors.initials: Y
authors.lastname: Luo
authors.forename: Guohui
authors.initials: G
authors.lastname: Chang
authors.forename: Xuping
authors.initials: X
authors.lastname: Sun
mesh_terms: D001560:Benzidines / Q000378:metabolism; D002384:Catalysis; D003124:Colorimetry / Q000379:methods*; D006861:Hydrogen Peroxide / Q000032:analysis*; D007202:Indicators and Reagents; D007501:Iron / Q000737:chemistry; D053768:Metal Nanoparticles / Q000737:chemistry*; D010084:Oxidation-Reduction; D010544:Peroxidases / Q000378:metabolism; D012822:Silicon Dioxide / Q000737:chemistry*
chemical_list: D001560:Benzidines; D007202:Indicators and Reagents; C509969:SBA-15; C021758:3,3',5,5'-tetramethylbenzidine; D012822:Silicon Dioxide; D006861:Hydrogen Peroxide; D007501:Iron; D010544:Peroxidases