High emission reduction performance of a novel organic-inorganic composite filters containing sepiolite mineral nanofibers

Abstract

In this work, a new organic-inorganic composite filter was prepared. The thickness, pore size, air permeability, bursting strength and microstructure were characterized systematically, proving that coatings had regulatory effect on filters physical properties. Benefitting from the distinct coatings containing 5% sepiolite nanofibers after five times dilution, the physical properties of corresponding air filter exhibits the most favorable performance and meet the standard of air filter. When used as fuel filter, it satisfies the fuel filter standard and achieves the best performance after six times dilution. The contrast test on engine emission was taken based on auto filters coated with/without as prepared nanofibers. An obvious decrease in the emission of carbon monoxide (CO), hydrocarbons (HC) and nitrogen oxide (NOx) can be observed after installation of composite filter on vehicles. Under the high idle condition, gasoline engine emission decreased by 8.13%, 11.35% and 44.91% for CO, HC and NOx, respectively. When tested in the low idle condition, engine emission reduced by 0.43%, 1.14% and 85.67% for CO, HC and NOx, respectively. The diesel engine emissions of CO, NOx and total amount of HC and NOx decreased by 32.26%, 3.28% and 4.66%, respectively. The results illustrate the composite installation exhibits satisfactory emission reduction effect.

Non-Monotonic Trends of Hydrogen Adsorption on Single Atom Doped g-C3N4

“…We expect that this study could also be valuable for many HER-related applications such as CO 2 and N 2 capture and utilization [5,53]. Also, it is expected that similar trends could be found in other reactions (e.g., oxygen reduction [54][55][56][57], oxygen evolution [58], and organic oxidation [59][60][61]) and in various types of advanced under-coordinated material systems [62][63][64][65][66][67][68][69][70][71].…”

Lignin-Based Hybrid Admixtures and their Role in Cement Composite Fabrication

“…In recent years, numerous attempts have been made to develop functional inorganic-organic hybrid materials with improved mechanical parameters, thermal properties, biocompatibility or biodegradability, for example to improve rubber products [32,33] or to reduce the emission of harmful compounds [34,35].…”

Planar Compound Eye Lens for Enhanced Light Extraction Efficiency in AlGaN‐Based Deep Ultraviolet LEDs

“…As the luminescence from 210 to 365 nm can be obtained by modulating Al compositions in the Al x Ga 1-x N active layers, AlGaN-based DUV light-emitting diodes (LEDs) have attracted significant attentions for applications in healthcare and advanced industries by virtue of its compact size, spectral tunability, and green manufacturing. [1][2][3][4] However, AlGaN-based LEDs still suffer from relatively low external quantum efficiency (EQE), especially for the wavelength shorter than 280 nm. According to tremendous efforts, the EQE has been mainly increased by improving crystalline defects and light extraction efficiency (LEE).…”