Heterogeneous photocatalysis over high-surface-area silica-supported silver halide photocatalysts for environmental remediation Conference

Hamal, DB, Klabunde, KJ. (2010). Heterogeneous photocatalysis over high-surface-area silica-supported silver halide photocatalysts for environmental remediation . ACS SYMPOSIUM SERIES, 1045 191-205. 10.1021/bk-2010-1045.ch011

cited authors

  • Hamal, DB; Klabunde, KJ

authors

abstract

  • High-surface area (971 -1232 m2/g) AgX-SiO2 (X = Cl, Br, I) photocatalysts were synthesized by using hexadecyltrimethylammonium bromide (CTAB) as structuredirecting template. Photocatalyst samples were characterized by nitrogen adsorption-desorption isotherm, X-ray diffraction analysis (XRD), and UV-Vis measurements. To demonstrate the environmental remediation processes, photodegradation reactions of acetaldehyde (gas-phase) and rhodamine blue (liquid-phase) were tested as model reactions under UV (320 - 400 nm) and visible light (420 nm) irradiation. It is concluded that silver iodide-silica system is the most active photocatalyst due to its stability, high-surface area, and low band gap as compared with silver bromide and chloride-silica systems for solar remediation of polluted air and water. © 2010 American Chemical Society.

publication date

  • August 6, 2010

published in

Digital Object Identifier (DOI)

International Standard Book Number (ISBN) 13

start page

  • 191

end page

  • 205

volume

  • 1045