کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
690579 | 1460415 | 2016 | 6 صفحه PDF | دانلود رایگان |
• Single phase β-MnOOH was fabricated via a facial hydrothermal and air oxidation route.
• It is first found to have peroxidase-like activity.
• It has two advantages, including high efficiency and long-term stability.
• It has great potential use of bio/chemical detection.
Single phase β-MnOOH with high crystallinity was successfully synthesized by a method combining controlled hydrothermal synthesis and subsequently air oxidation. The results of X-ray diffraction, scanning electron microscopy, transmission electron microscopy showed that the as-prepared β-MnOOH had a thin hexagonal layered structure, uniform particle size distribution, and good dispersion. The presence of hydrazine and suitable hydrothermal temperature (140 °C) are of the two key factors to synthesize pure phase β-MnOOH. The synthesized β-MnOOH nanoplates could catalyze the oxidation reaction of peroxidase substrate 3,3′,5,5′-tetramethylbenzidine in the absence of H2O2 to produce a blue color change, indicating an intrinsic enzyme-like activity. Furthermore, as an inorganic enzyme mimic, β-MnOOH also showed high stability, which facilitates its potential applications as enzyme mimics in biosensor, biotechnology, and biomedicine.
β-MnOOH nanoplates with good crystallinity, uniform particle distribution, and good dispersion can catalyze the oxidation reaction of peroxidase substrate TMB in the absence of H2O2 to produce a blue color change.Figure optionsDownload as PowerPoint slide
Journal: Journal of the Taiwan Institute of Chemical Engineers - Volume 59, February 2016, Pages 547–552