The base-free oxidation of furfural by non-noble metal systems has been challenging. Although MnO2 emerges as a potential catalyst application in conditions, its catalytic efficiency still needs to be improved. crystalline form is an important factor affecting the ability furfural. For this reason, four forms (?, ?, ?, and ?-MnO2) were selected. Their performance surface functional groups analy...

While radiotherapy (RT) is commonly used in clinics for cancer treatment, the therapeutic efficiency is not satisfactory owing to the existence of the hypoxic tumor microenvironment which seriously affects the efficiency of RT. Herein, we design polyethylene glycol (PEG)-modified reduced nano-graphene oxide-manganese dioxide (rGO-MnO2-PEG) nanocomposites to trigger oxygen generation from H2O2 t...

Fabricating hierarchical core-shell nanostructures is currently the subject of intensive research in the electrochemical field owing to the hopes it raises for making efficient electrodes for high-performance supercapacitors. Here, we develop a simple and cost-effective approach to prepare CuO@MnO2 core-shell nanostructures without any surfactants and report their applications as electrodes for...

Helical hierarchical porous Na x MnO2/CC and MoO2/CC, which are assembled from nanosheets and nanoparticles, respectively, are fabricated using a simple electrodeposition method. These unique helical porous structures enable electrodes to have a high capacitance and an outstanding cycling performance. Based on the helical Na x MnO2/CC as the positive electrodes and helical MoO2/CC as the negati...

The effects of solution pH and initial concentration on adsorption and coprecipitation of As(V) from aqueous solutions by manganese dioxide [MnO2] for 50d and 1120d were studied. The XRD, FT-IR and SEM results indicated that there was only slight difference between the MnO2 adsorbents before and after adsorption, but their crystal structure had not changed. For the initial As(V) concentration C...

background: the use of nanotechnology has led to rapid growth in various areas. thus, health and safety issues of nanoparticles (nps) should be promptly addressed. manganese oxide (mno2) nanoparticles (nps) are typically used for biomedical and industrial applications. however, characterizing the potential human health effects of mno2 nps is required before fully exploiting these materials. the...

Persistent luminescence nanoparticles (PLNPs) hold great promise for the detection and imaging of biomolecules. Herein, we have demonstrated a novel nanoprobe, based on the manganese dioxide (MnO2 )-modified PLNPs, that can detect and image glutathione in living cells and in vivo. The persistent luminescence of the PLNPs can be efficiently quenched by the MnO2 nanosheets. In the presence of glu...

The discharge characteristics of manganese dioxide cathode in the presence of small amounts (1, 3 and 5 wt. %) of titanium disulphide (TiS2) additive has been investigated in an alkaline cell using aqueous lithium hydroxide as the electrolyte. The incorporation of small amounts of TiS2 additives into manganese dioxide (MnO2) was found to improve the battery discharge capacity from 150 to 270 mA...

The influence of CeO2 additions on the electrochemical behaviour of the MnO2 cathode in a Zn-MnO2 battery using lithium hydroxide (LiOH) as an electrolyte is investigated using microscopy and spectroscopic techniques. The results showed that such additions greatly improve the discharge capacity of the battery (from 155 to 190 mAh/g) but only from the second discharge cycle onwards. Capacity fad...