log (gas /glass) Major species of elements in the gas and glass phases log (gas /glass) Major species of elements in the gas and glass phases Ag 3.14 Ag(g), AgCl(g); AgCl Mn -5.30 MnO(g), MnCl2(g); MnSiO3 Al -5.60 AlOF2(g); Al2O3, feldspars Mo -0.2 H2MoO4(g); CaMoO4, Na2MoO4 As 1.28 AsO(g); AlAsO4 Na -0.76 NaCl(g); NaAlSi3O8 B 2.99 HBO2(g), NaBO2(g); CaB2O4 Nb -5.33 NbO2(g); NbO2, Nb2O5 Ba -5.1...

The tribology properties of TiO2/POE, SiO2/POE and TiO2-SiO2/POE nanolubricants were investigated for an automotive air-conditioning system with electrically-driven compressor (EDC). A two-step preparation method was used in dispersing TiO2 SiO2 nanoparticles into Polyol-ester (POE)-based lubricant at different volume concentrations 0.01 to 0.1%. coefficient friction (COF) wear scar diameter (W...

Increase in organic waste generation, dwindling nature of global oil reserves coupled with environmental challenges caused by waste oil disposal and burning of fossil fuels necessitated the need for alternative energy resources. Waste cooking oil obtained from the frying fish outlet was analyzed for its physicochemical properties using ASTM D-975 methods. Acid and Iodine values of the oil were ...

This interdisciplinary project investigates the performance of nanoscale metalinsulator-semiconductor (MIS) contact structures that electrically couple optimized catalysts to high quality semiconductor absorbers in photoelectrochemical (PEC) cells, while chemically protecting the absorbers from oxidation during solar-driven water splitting. In the 2013-14 funding period, we completed and publis...

TiO2/SiO2 composites were synthesized via a simple sol gel method by surface reduction of Ti4+ ions to Ti3+ using titanium isopropoxide as TiO2 precursor and rice husks (RHA) SiO2 source. The silica content calcination temperature the materials evaluated. Thermal, crystallographic physicochemical aspects suggest that biogenic (SiO2) can improve thermal stability anatase phase TiO2, when reaches...

The catalytic hydrogenation of lactic acid to 1,2-propanediol with supported Ru catalysts in water was investigated. The influence of catalyst support (activated carbon, γ-Al2O3, SiO2, TiO2, and CeO2) and promoters (Pd, Au, Mo, Re, Sn) on the catalytic performance was evaluated. Catalytic tests revealed that TiO2 yields the best Ru catalysts. With a monometallic Ru/TiO2 catalyst, a 1,2-propaned...

in this research we have developed a treatment method for textile wastewater by tio2/sio2-based magnetic nanocomposite. textile wastewater includes a large variety of dyes and chemicals and needs treatments. this manuscript presents a facile method for removing dyes from the textile wastewater by using tio2/sio2-based nanocomposite (fe3o4@sio2/tio2) under uv irradiation. this magnetic nanocompo...

Cr2O3 and Cr2O3–SiO2-TiO2 coatings are deposited on P265GH steel using atmospheric plasma spraying. The influence of silicon oxide—titanium oxide addition the surface morphology coatings, phase composition tribological properties under non-lubricated sliding conditions investigated. SiO2-TiO2 led to formation a more uniform reduce roughness coatings. X-ray diffraction (XRD) studies indicated th...