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Sensitive colorimetric glucose sensor by iron-based nanozymes with controllable Fe valence.
Zhao, Wenli; Zhang, Guangpu; Du, Yang; Chen, Shuangqin; Fu, You; Xu, Fan; Xiao, Xiangyun; Jiang, Wei; Ji, Qingmin.
Afiliación
  • Zhao W; Herbert Gleiter Institute for Nanoscience, School of Materials Science and Engineering, Nanjing University of Science and Technology, 200 Xiaolingwei, Nanjing, 210094, P. R. China. jiqingmin@njust.edu.cn.
  • Zhang G; National Special Superfine Powder Engineering Technology Research Center, Nanjing University of Science and Technology, Nanjing 210094, P. R. China. climentjw@126.com.
  • Du Y; School of Chemical Engineering, Nanjing University of Science and Technology, 200 Xiaolingwei, Nanjing, 210094, P. R. China.
  • Chen S; Herbert Gleiter Institute for Nanoscience, School of Materials Science and Engineering, Nanjing University of Science and Technology, 200 Xiaolingwei, Nanjing, 210094, P. R. China. jiqingmin@njust.edu.cn.
  • Fu Y; School of Chemical Engineering, Nanjing University of Science and Technology, 200 Xiaolingwei, Nanjing, 210094, P. R. China.
  • Xu F; Herbert Gleiter Institute for Nanoscience, School of Materials Science and Engineering, Nanjing University of Science and Technology, 200 Xiaolingwei, Nanjing, 210094, P. R. China. jiqingmin@njust.edu.cn.
  • Xiao X; Herbert Gleiter Institute for Nanoscience, School of Materials Science and Engineering, Nanjing University of Science and Technology, 200 Xiaolingwei, Nanjing, 210094, P. R. China. jiqingmin@njust.edu.cn.
  • Jiang W; National Special Superfine Powder Engineering Technology Research Center, Nanjing University of Science and Technology, Nanjing 210094, P. R. China. climentjw@126.com.
  • Ji Q; Herbert Gleiter Institute for Nanoscience, School of Materials Science and Engineering, Nanjing University of Science and Technology, 200 Xiaolingwei, Nanjing, 210094, P. R. China. jiqingmin@njust.edu.cn.
J Mater Chem B ; 9(23): 4726-4734, 2021 06 16.
Article en En | MEDLINE | ID: mdl-34095946
The proportion of Fe2+ and Fe3+ in Fe-based nanozymes is a key point in determining their catalytic activity. However, it is hard to adjust the Fe2+/Fe3+ ratio in nanozyme systems to achieve the best catalytic performance. In this work, we successfully regulate Fe2+/Fe3+ ratios in a wide range of 0.81-1.45 based on a novel porous platform of Fe doped silica hollow spheres. The homogeneous distribution and stable fixation of Fe components in Fe doped silica hollow spheres facilitate the valence regulation of Fe in the reduction heating in H2/Ar. When the Fe doped spheres (FeOx@SHSs) were used as nanozymes, different Fe2+/Fe3+ ratios have shown to influence the peroxidase-like catalytic activity greatly. The highest activity at the ratio of 1.41 should be due to the combined effects of the accelerated reaction rate by Fe2+ and the enhanced catalytic cycle efficiency by Fe3+. The FeOx@SHSs-based nanozyme is further applied to construct a facile colorimetric biosensing system, which exhibited extremely sensitive determination of glucose. This work presents an effective platform for controlling Fe valences and optimizing the peroxidase-like activity for catalytic processes or sensing systems.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Peroxidasas / Colorimetría / Nanopartículas del Metal / Glucosa / Hierro Tipo de estudio: Diagnostic_studies Idioma: En Revista: J Mater Chem B Año: 2021 Tipo del documento: Article Pais de publicación: Reino Unido
Texto completo
Añadir a Mi BVS
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XML
PubMed Links
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Peroxidasas / Colorimetría / Nanopartículas del Metal / Glucosa / Hierro Tipo de estudio: Diagnostic_studies Idioma: En Revista: J Mater Chem B Año: 2021 Tipo del documento: Article Pais de publicación: Reino Unido