Nanocrystalline ZrO2 (Zirconia) has been synthesized by a conventional precipitation method. The structural, morphological, microstructural, optical and gas-sensing properties of ZrO2 were investigated by using X-ray diffraction analysis (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), UV-vis spectroscopy and static gas sensing unit, respectively. X-ray diffrac...

Due to issues surrounding carbon dioxide emissions from carbon-containing fuels, there is growing interest in ammonia (NH3) as an alternative combustion fuel. One attractive method of burning NH3 co-fire it with hydrocarbons, such natural gas, and this case soot formation possible. To begin understanding the influence on when co-fired volume fractions mole gas-phase species were computationally...

The formation of inorganic fine particulate matter (i.e., iPM2.5) is controlled by the thermodynamic equilibrium partitioning NH3-NH4+. To develop effective control strategies PM2.5, we aim to understand impacts changes in different precursor gases on iPM2.5 concentrations and NH3-NH4+ southeastern U.S., responses four seasons were investigated using field measurements iPM2.5, gases, meteorolog...

This study aimed to survey the chemical change and germination effect of anaerobic digestate after pH adjustment aerobic treatment. The amount ammonia (NH3) in swine slurry digestates (SS AD) 7.0 6.5 were lower than that un-adjusted digestate. Especially, with had lowest NH3 generation. NH4-N has been gradually decreasing untreated digestate, however, showed no significant changes. In tests dif...

Perovskite-type N-substituted SrTiO3 thin films with a preferential (001) orientation were grown by pulsed laser deposition on (001)-oriented MgO and LaAlO3 substrates. Application of N2 or ammonia using a synchronized reactive gas pulse produces SrTiO3-x:Nx films with a nitrogen content of up to 4.1 at.% if prepared with the NH3 gas pulse at a substrate temperature of 720 °C. Incorporating nit...

This communication describes a simple solvent-free method for fabricating chemoresistive gas sensors on the surface of paper. The method involves mechanical abrasion of compressed powders of sensing materials on the fibers of cellulose. We illustrate this approach by depositing conductive layers of several forms of carbon (e.g., single-walled carbon nanotubes [SWCNTs], multi-walled carbon nanot...

A compact, fast-response Quantum Cascade Tunable Infrared Laser Differential Absorption Spectrometer (QC-TILDAS) for measurements of ammonia (NH3) has been evaluated under both laboratory and field conditions. Absorption of radiation from a pulsed, thermoelectrically cooled QC laser occurs at reduced pressure in a 0.5 L multiple pass absorption cell with an effective path length of 76 m. Detect...

Micro-electronic gas sensor devices were developed for the detection of carbon monoxide (CO), nitrogen oxides (NOx), ammonia (NH3), and formaldehyde (HCHO), as well binary mixed-gas systems. Four sensing materials different target gases, Pd-SnO2 CO, In2O3 NOx, Ru-WO3 NH3, SnO2-ZnO HCHO, synthesized using a sol-gel method, then fabricated micro platform. The behavior response to mixture examined...