Nanoarchitectured peroxidase-mimetic nanozymes: mesoporous nanocrystalline α- or γ-iron oxide?
Source abstract
Abstract
Nanozymes (nanoparticles with enzyme-like properties) have attracted considerable attention in recent years owing to their intrinsic enzyme-like properties and broad application in the fields of ELISA based immunoassay and biosensing. Herein, we systematically investigate the influence of crystal phases (γ-Fe2O3 and α-Fe2O3) of mesoporous iron oxide (IO) on their peroxidase mimetic activity. In addition, we have also demonstrated the applicability of these mesoporous IOs as nanozymes for detecting the glucose biomarker with a limit of detection (LOD) of 0.9 μM. Mesoporous γ-Fe2O3 shows high nanozyme activities (and magnetism) toward the catalytic oxidation of chromogenic substances, such as 3,3',5,5'-tetramethylbenzidine (TMB) and 2,2'-azino-bis(3-ethylbenzothiazoline-6-sulphonic acid)-ABTS, as well as for the colourimetric detection of glucose, compared to that of α-Fe2O3. We believe that this in-depth study of crystal structure based nanozyme activity will guide designing highly effective nanozymes based on iron oxide nanostructures for chemical sensing, biosensing and environmental remediation.
Source: openalex_inverted_index · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Advanced Nanomaterials in Catalysis · Nanocluster Synthesis and Applications · Advanced biosensing and bioanalysis techniques
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Australian Institute for Bioengineering and Nanotechnology (AIBN)
The University of Queensland
Brisbane
Australia
Department of Biochemistry & Molecular Biology
Australian Nuclear Science and Technology Organisation (ANSTO)
Lucas Heights
School of Environment and Science and Queensland Micro- and Nanotechnology Centre
Griffith University
QLD 4111
National Centre for Catalysis Research (NCCR) and Department of Chemistry
Indian Institute of Technology-Madras
Chennai 600 036
India
International Center for Materials Nanoarchitectonics (WPI-MANA)
National Institute for Materials Science (NIMS)
Ibaraki 305-0044
Japan
Department of Chemistry
King Abdulaziz University
Jeddah 21589
Saudi Arabia
Dr. MACS Bio-Pharma Pvt. Ltd
R&D Centre
Hyderabad
Funding
Australian Research Council · University of Queensland · King Abdulaziz University · Australian Institute of Nuclear Science and Engineering
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