Increasing the amount of water without increasing the precursor concentration, the efficiency of sol-to-gel conversion is negatively affected [39], because of the reduced TEOS concentration in total reaction vo
corroborating the findings from static compression experiments, e.g., refs.20,26,. However, data collected on release from 18.9 and 33.6 GPa do show amorphization after conversion to stishovite, therefore we can assign the final state to be a diaplectic glass. We map out the pressure-...
A feature of SiO2‒TiO2 aerogels obtained by the method of low-temperature supercritical drying is a higher content of Si–O–Ti centres [[40], [41], [42]], which is due to the high chemical homogeneity of such materials and the absence of inclusions of crystalline TiO2. Materials ...
However, by employing rear SiO2/TiOx stack with the front SiO2/MoOx, the device performance enhanced to openヽircuit voltage of 785 mV, shortヽircuit current density of 41 mA/cm, fill factor of 77%, and simulated conversion efficiency of 24.83%, which is 10% enhancement in the performance...
Solar cells are considered a powerful strategy to harness solar energy [1]. Crystalline sili- con (c-Si) solar cell modules hold more than 90% of the solar cell market share. C-Si solar cell modules mainly include a front side glass cover with a thickness of 3.2 mm [2]. Within the ...
scientificreports Table 1 | The molar ratios of Si/V in the films prepared on aluminium foils and the thicknesses of the composite films on glass substrates with different Si/V molar ratios as well as the calculated filling factor according to the molar ratios of Si/V based on the EDX ...
Simm (1959) reports critical fields in the range of 2 to 4.1 kV/mm and observes that the onset of BC is polarity dependent. White (1974) has recorded breakdown field strengths in the range of 0.8 to 4 kV/mm; however, the values for dust contain- ing conductive particles (high ...
the phenol conversion with amorphous TiO2 is just 23.3%, whereas that with TiO2@SiO2 is 41.8%. The FTIR spectra in Fig. 2 show that TiO2 and SiO2 interact and form Ti–O–Si bonds. The formation of Ti–O–Si bonds is considered to be an important factor for high catalytic activi...
We applied SiO2 nanoparticles as an alternative to mesoporous TiO2 or Al2O3 scaffolds and achieved power conversion efficiency (PCE) of up to 16.2%. Careful characterization of the effects of different scaffolds on device performance reveals that SiO2-based perovskite solar cells show much higher PC...
10). Both catalysts exhibited stable CH4 selectivity, with Ba–Ni/SA maintaining 85.6% CO2 conversion, while Ce–Ni/SA showed a slight decline (2.5%) due to minor deactivation, possibly a lower Ni–Ce interactions at high temperatures. Furthermore, CO2 consumption rates at 250–350 °C (...