Abstract:This examines the potential of heterogeneous photocatalysis, as an innovative oxidation technology. The aim is to demonstrate that this technology, is able to reduce the damaging effects of vehicle emissions by using nitrogen doped (N-doped) TiO2 as a photocatalyst immobilized above the asphalt road surface. In the study, the photocatalytic effectiveness and durability of N-doped TiO2 photocatalytic asphalt road material were assessed in both the laboratory and the field by direct and indirect measurement. The experimental results show that N-doped TiO2 asphalt road material has a higher activity compared with the pure TiO2 asphalt road material under visible light irradiation, with decontamination rate for NOx about 27.6%, 24.6%, 16.3% and 13.8% under the irradiation of light wavelength 330-420 nm, 430-530 nm, 470-570 nm and 590-680 nm, respectively. Results of the field test and predicted models suggest that the service life of N-doped TiO2 asphalt road material is approximately 13 months.
NoHas this paper or parts of it been published as a conference proceeding? A conference proceeding may be reviewed for publication only if it has been significantly revised and contains 50% new content. Any content overlap should be reworded and/or properly referenced. If your answer is yes, please explain in the comments box below and be prepared to provide the conference paper.No ASCE allows submissions of papers that are based on theses and dissertations so long as the paper has been modified to fit the journal page limits, format, and tailored for the audience. ASCE will consider such papers even if the thesis or dissertation has been posted online provided that the degree-granting institution requires that the thesis or dissertation be posted.
NoCompanion manuscripts are discouraged as all papers published must be able to stand on their own. Justification must be provided to the editor if an author feels as though the work must be presented in two parts and published simultaneously. There is no guarantee that companions will be reviewed by the same reviewers, which complicates the review process, increases the risk for rejection and potentially lengthens the review time. If
Powered by Edit orial Manager® and ProduXion Manager® from Aries Syst em s Corporat ionthis is a companion paper, please indicate the part number and provide the title, authors and manuscript number (if available) for the companion papers along with your detailed justification for the editor in the comments box below. If there is no justification provided, or if there is insufficient justification, the papers will be returned without review.If this manuscript is intended as part of a Special Issue or Collection, please provide the Special Collection title and name of the guest editor in the comments box below.Recognizing that science and engineering are best served when data aremade available during the review and discussion of manuscripts andjournal articles, and to allow others to replicate and build on workpublished in ASCE journals, al...
In order to study the influences of amino silane coupling agents with different grafting densities on the surface of nano silica on the thermomechanical properties of cross-linked epoxy resin, the molecular dynamics method was used to establish an amorphous model and calculate the mechanical properties, glass transition temperature, mean square displacement, hydrogen bond, binding energy, and radial distribution function of the composite models in this paper. The results are as follows: with the increase of the grafting density of an amino silane coupling agent on the surface of nano silica particles, the mechanical properties and glass transition temperature of epoxy resin showed a trend of increasing first and then decreasing. When the grafting ratio was 9%, the mechanical properties and glass transition temperature of the epoxy resin were the largest, and the glass transition temperature was increased by 41 K. At the same time, it was found that the higher the grafting ratio, the lower the chain movement ability, but the higher the binding energy. Besides, the binding energy between the nanoparticles of the grafted silane coupling agent and epoxy resin was negatively correlated with the temperature. By analyzing the hydrogen bond and radial distribution function, the results showed that the improvement of the grafted silane coupling agent on the surface of the nanoparticle to the thermomechanical properties of the epoxy resin was related to the OH···O and NH···O hydrogen bonds. The analysis results indicated that the proper grafting density should be selected based on the established model size, selected nanoparticle diameter, and epoxy resin materials in order to better improve the thermomechanical properties of the epoxy resin.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.