Open AccessLamellar shape lead tungstate (PbWO4) nanostructures as synergistic catalyst for peroxidase mimetic activity
Author(s) -
Naveed Akhtar Shad,
Muhammad Munir Sajid,
Yasir Javed,
Muhammad Ikram,
Majid Hussain,
Saba Nawaz,
Amir Muhammad Afzal,
Syed Zajif Hussain,
Nasir Amin,
Imran Yousuf
Publication year - 2020
Publication title -
materials research express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.383
H-Index - 35
ISSN - 2053-1591
DOI - 10.1088/2053-1591/ab69cf
Subject(s) - lamellar structure , tungstate , biocompatibility , materials science , substrate (aquarium) , nanoporous , nanomaterials , adsorption , nanostructure , chemical engineering , nuclear chemistry , fourier transform infrared spectroscopy , specific surface area , catalysis , nanotechnology , chemistry , organic chemistry , metallurgy , oceanography , engineering , geology
Tungstate based nanomaterials have emerged as important class in transition metal oxide. In this study, Lead tungstate (PbWO 4 ) nanostructures with lamellar morphology were prepared by hydrothermal method. The synthesized materials were characterized by XRD, SEM, FTIR, DLS, BET and PL. Nitrogen adsorption-desorption measurements indicated that the surface area of the synthesized lamellar morphology was ∼86.225 m 2 g −1 . The lamellar-like morphology showed enhanced peroxidase-like activity owing to the large surface area, higher substrate interaction and efficient electron transportation. The results indicated higher reaction velocity (V max = 13.56 × 10 −8 M s −1 ) and low Michaelis-Menten constant (km = 0.325 mM) value for nanostructures, providing evidence for higher affinity of novel structures towards the substrate and increased peroxidase-like activity. Finally, biocompatibility test was conducted by performing cytotoxicity experiments of PbWO 4 nanostructures on MTT assays.