In this work, platinum group metal (PGM) free-based cathode active layers were prepared using different printing techniques. The membrane electrode assemblies (MEAs) integrate a PGM free catalyst based on Fe, N and C atoms at the side. Scanning electron microscopy (SEM) images of MEA cross sections showed strong impact fabrication process structure, porosity ionomer repartition. MEAs characteri...

When young children do not receive adequate amounts of the micronutrient iodine in their diet, their growth and cognitive development can be impaired. Nearly every country in the world has programs in place to track iodine intake and provide supplemental iodine if needed, usually in the form of fortified salt. The iodine nutrition status of a population can be tracked by monitoring iodine level...

A comparative research on stability, viscosity (µ), and thermal conductivity (k) of carbon nanosphere (CNS) nanopowder (CNP) nanofluids was performed. CNS synthesized by the hydrothermal method, while CNP provided manufacturer. Stable at high concentrations 0.5, 1.0, 1.5 vol% were prepared successfully. The properties nanoparticles analyzed with Fourier-transform infrared spectroscopy (FT-IR), ...

Activated carbon (AC) derived from coconut shells (CS-AC) was obtained through pyrolysis at 700°C and subsequently activated with H3PO4. AC ground in a Wiley mill several times to form powder particles particle scales of 80, 100, 200 meshes. The characterization the studied using scanning electron microscopy (SEM), X-ray diffraction analysis (XRD), Fourier-transform infrared spectroscopy (FT-IR...

A series of composites consisting of anatase TiO2 nanocrystals and three-dimensional (3D) graphene aerogel (TiO2-GA) were self-assembled directly from tetrabutyl titanate and graphene oxides via a one-pot hydrothermal process. TiO2 was found to uniformly distribute inside the 3D network of GA in the resulting composites with large surface areas (SBET > 125 m(2) g(-1)) and high pore volumes (Vp ...

Biogas is one of the main biomass-energy resources. Its use for syngas production with a H2/CO ratio close to 2 would have huge environmental, social and economic impact in the actual energetic scenario. However, the use of dry reforming, where the two main components are transformed into syngas, does not allow the desired H2/CO ratio. For this reason, the addition of water is proposed. The pro...

Abstract: Hydroxyapatite, Ca10(PO4)6(OH)2, has been widely investigated for medical purposes because it is suitable for either direct clinical use as implants or tissue-engineering applications. In this work materials were successfully produced via hydrothermal transformation of aragonite, obtained from fresh cuttlefish bones, at 200°C and high pressures. Beyond low production cost, worldwide a...

The agricultural lands in Al-Qadisiyah Governorate are among the most economical sources which various crops grown, such as rice, wheat, and others. Samples were taken from seven areas Governorate, heavy elements, including lead, zinc, cadmium, nickel, copper chromium, examined by atomic spectrometry. In order to know extent of danger these elements soil their impact on human health, pollution ...

This paper summarizes some of the information contained in a comprehensive document about the beneficial use of municipal waste combustion (MWC) residues. The document entitled "Beneficial Use and Recycling of Municipal Waste Combustion Residues A Comprehensive Resource Document", presents information from world-wide sources and contains numerous references. Information is presented on ash char...

Computer aided analysis of electron paramagnetic resonance (EPR) spectra of tetrachloro-dibenzodioxin labelled with a nitroxide radical (TCDD-T) was employed to investigate the adsorption of dioxin vapours onto two carbons, the activated carbon (AC) NORIT GL50 and a carbon directly taken from a waste incinerator (WI) plant, termed EVN.2, and a low-polar micelle-templated mesoporous silica, term...