TiO2 Coated-Asphalt Buton Photocatalyst for High-Performance Motor Vehicles Gas Emission Mitigation

• Published in: Emission control science and technology (Online) Vol. 6; no. 1; pp. 28 - 36
• Main Authors: Muzakkar, Muhammad Zakir, Nurdin, Muhammad, Ismail, Ima, Maulidiyah, Maulidiyah, Wibowo, Dwiprayogo, Ratna, Ratna, Saad, Siti Khatijah Md, Umar, Akrajas Ali
• Format: Journal Article
• Language: English
• Published: Cham Springer International Publishing 01-03-2020; Springer Nature B.V
• Subjects: Adsorption; Aging; Air pollution; Air quality; Anatase; Asphalt; Carbon dioxide; Carbon monoxide; Coatings; Earth and Environmental Science; Earth Sciences; Emissions control; Environmental Science and Engineering; Fabrication; Gases; Hazardous materials; Industrial Chemistry/Chemical Engineering; Mitigation; Motor task performance; Motor vehicles; Odors; Pollutants; Pollution control; Sol-gel processes; Surfaces and Interfaces; Thin Films; Titanium dioxide; Vehicles; Mitigation; Asbuton-anatase TiO; Motor vehicle gas emission; Asphalt Buton; Photocatalyst; composite
• ISSN: 2199-3629; 2199-3637
• DOI: 10.1007/s40825-019-00132-3

Gas emission from motor vehicle has become the origin of many serious issues including health and air-quality, green house effect, and other environment issues. While motor vehicle manufacturers have set a particular standard of gas emission and motor vehicle aging, usage has contributed to the increase of hazardous gas emission from vehicles. Therefore, developing a special material that can adsorb the emitted gases should be continuously demonstrated. This paper reports the fabrication of a high-performance material, i.e., asphalt naturally found in Buton Island, Indonesia (asbuton), composited of anatase TiO
2
(ATi), for application in gas emission reduction, such as carbon monoxide (CO), carbon dioxide (CO
2
), and other hydrocarbon gases (HC). ATi was prepared by coating the pre-extracted asbuton with anatase TiO
2
sol-gel via a spray-coating technique and annealed at 120 °C for 3 h. We found that the CO, CO
2
, and HC gases can be effectively adsorbed by the ATi adsorbent as high as 600, 1500, and 760 ppm, respectively, for exposure time of only 90 s each. The gas adsorption on the ATi obeys Langmuir and Freundlich isotherms. The maximum gas adsorption capacity was found to be as high as 95,238 and 2348 ppm (for CO
2
and HC, respectively). The availability of abundant –OH active ligand on Si–OH and Ti–OH and highly porous structure, as judged from the FTIR and SEM analysis results, is assumed as the key reason for the high adsorption capacity of the ATi. The ATi should find a potential application in motor vehicle gas emission and air pollutant mitigation.