Titanium dioxide (TiO2) incorporated ordered 2D hexagonal mesoporous silica (SiO2) films on a glass substrate were fabricated for use as a catalytic nanoreactor. Films were prepared using a tetraethyl orthosilicate (TEOS) derived SiO2 sol and a commercially available dispersion of TiO2 nanoparticles (NPs) in the presence of pluronic P123 as the structure directing agent. The effect of TiO2 dopi...

In this scientific research, for the first time, the removal of radioactive strontium-90 (90Sr) by γ-MnO2-AgA zeolite as a novel nanocomposite adsorbent was accomplished under different conditions such as pH, temperature, adsorbent amount and the contact time that are examined from drinking water of Ramsar city and monitored via Ultra Low-Level Liquid Scintillation Counting (LSC) technique. Pri...

In this research, fabrication and functionalization of MnO2 nanoparticles with cetyltrimethylammonium bromide (MnO2 NPs-CTAB) were confirmed for removal two reactive anionic sulfonated azo dyes: remazol red (RR) black 5 (RB5). The modified nanosorbent was characterized via X-ray diffraction, thermogravimetric analysis, Fourier transform infrared spectroscopy, BET SEM HRTEM studies. Various adju...

objective(s):   recently, applications of mno2 nanoparticles and microparticles in industry, pharmacology, and medicine have considerably expanded. mn distribution and clearance from brain and spinal cord tissue compared with muscle tissue of rats after single subcutaneous injection of nanoparticles and microparticle of mno2. pain sensory threshold of rat was evaluated as neurologic consequence...

Based on the specific tumor microenvironment, characterized by an overproduction of H2O2 and a high glutathione (GSH) concentration, cascade reactions nanomaterials, capable mediating GSH depletion reactive oxygen species (ROS) generation, have become popular strategy to increase cancer therapy efficiency. In this study, we exploited reduced graphene oxide (rGO), one most promising graphene-bas...

background and aims: although metal and metal oxide nanoparticles are used in different medical applications, they may have considerable toxicity on various cells, such as myocytes. therefore, this study aimed to evaluate the toxicity of the naked and serum-treated silver nanoparticles (ag nps) and magnesium oxide nanoparticles (mgo nps) on the cardiomyocytes. materials and methods: cardiomyocy...

Here we proposed a novel architectural design of a ternary MnO2-based electrode - a hierarchical Co3O4@Pt@MnO2 core-shell-shell structure, where the complemental features of the three key components (a well-defined Co3O4 nanowire array on the conductive Ti substrate, an ultrathin layer of small Pt nanoparticles, and a thin layer of MnO2 nanoflakes) are strategically combined into a single entit...

In this work, a sensitive electrochemical aptasensor for the detection of thrombin (TB) is developed and demonstrated based on the co-catalysis of hemin/G-quadruplex, platinum nanoparticles (PtNPs) and flower-like MnO2 nanosphere functionalized multi-walled carbon nanotubes (MWCNT-MnO2).

The low energy efficiency and poor cycle stability arising from the high aggressivity of discharge products toward organic electrolytes limit practical applications Li-O2 batteries (LOBs). Compared with typical product Li2O2, LiOH shows better chemical electrochemical stability. In this study, a free-standing cathode composed hydrangea-like δ-MnO2 Ag nanoparticles (NPs) embedded in carbon paper...

Growing MnO2 nanocrystals in the bulk of porous carbon nanofibers is conducted in a KMnO4 aqueous solution aimed to enhance the electrochemical performance of MnO2. The rate of redox reaction between KMnO4 and carbon was controlled by the concentration of KMnO4 in a neutral solution. The MnO2 nanoparticles grow along with (211) crystal faces when the redox reaction happens on the surface of fib...