caco3 nanoparticles have been synthesized via heat-treatment of a new precursor and solid state reaction. effect of calcinations temperature and quantity of surfactant on particle size has been investigated. the products were characterized by x-ray diffraction (xrd), scanning electron microscopy (sem), transmission electron microscopy (tem) and fourier transform infrared (ft–ir) spectroscopy.

indoor radon and thoron have been measured in the houses ofmoradabad district, uttar pradesh india, by means of solid state nuclear trackdetectors. radon, an invisible radioactive gas, occurs naturally in indooratmospheres and along with thoron is the most important contribution of humanexposure to natural sources. radon exists in soil gas building materials and indooratmosphere to name but a f...

groundwater makes up an important part of global freshwater resources, though it is often threatened by overuse of natural resources along with abundant production of wastes in modern society. this study aims to investigate the removal of three heavy metals including nickel, cadmium, and lead from groundwater via electrocoagulation, a suitable method for treatment of water-soluble compounds, de...

Solid electrolytes used in all-solid-state batteries electronically separate the positive and negative electrodes battery only allow carrier ions to pass through. KTiOPO 4 (KTP), a potassium ion-conducting solid electrolyte, was first applied as inner contact layer of an ion-selective electrode (ISE) stabilize membrane potential. Application KTP improved long-term potential stability ISE by sta...

All-solid-state Li-S batteries (use of solid electrolyte LiBH4) were prepared using cathodes a homogeneous mixture graphene oxide (GO) and reduced (rGO) with sulfur (S) lithium borohydride (LiBH4), their electrochemical performance was reported. The use LiBH4 its compatibility Li metal permits the utilization anode that improves vitality composite electrodes. GO-S rGO-S nanocomposites different...

A non-invasive brain-machine interface (BMI) or brain-computer interface is a technology for helping individuals with disabilities and utilizes neurophysiological signals from the brain to control external machines or computers without requiring surgery. However, when applying electroencephalography (EEG) methodology, users must place EEG electrodes on the scalp each time, and the development o...

Based on polyaniline-single-walled carbon nanotubes -sponge electrodes, highly compressible all-solid-state supercapacitors are prepared with an integrated configuration using a poly(vinyl alcohol) (PVA)/H2 SO4 gel as the electrolyte. The unique configuration enables the resultant supercapacitors to be compressed as an integrated unit arbitrarily during 60% compressible strain. Furthermore, the...

We report microelectrochemical devices that mimic some functions of solid-state circuit components such as diodes and transistors. The operation of this new family of devices is enabled by a network of microfluidic electrochemical cells that communicate with one-another via conductive solutions and, in some cases, bipolar electrodes. The output of the devices can be either electrochemical or op...

The reduction of carbon dioxide to fuels and chemicals can be accomplished by the use of electrocatalysts of the platinum group metals. Worthwhile products include carbon monoxide, formate, methanol, methane, oxalate and even higher hydrocarbons depending on the catalyst type and environment. Three classes of electrocatalysts have been identified: catalytic metal sugaces, monomeric solution com...

Great opportunities exist for Ion-Selective Electrodes (ISEs) in the fields of environmental monitoring and of wearable applications for example as the sensing part in wireless networks. In this review special attention is given to the recent results obtained with Solid Contact IonSelective Electrodes and Solid Contact Reference Electrodes. Their combination as disposable sensing platform may o...