Synergism of activated carbon and undoped and nitrogen-doped TiO2 in the photocatalytic degradation of the chemical warfare agents soman, VX, and yperite.
Efficient photocatalytic decomposition of chemical warfare agents is a process that may find application in emergency situations or for the controlled destruction of chemical warfare stockpiles. A series of heterogeneous photocatalysts comprising TiO2-activated carbon or N-TiO2-activated carbon composites exhibit excellent photocatalytic activity to effect the complete decomposition of yperite, soman, and VX in high concentrations. The remarkable photocatalytic activity arises from the synergism between adsorption on active carbon and photoactivity by titania. Nitridation makes the composite also active under visible-light irradiation.
Department of Chemical Technology and Catalysis, Faculty of Chemistry, University of Bucharest, Bd. Regina Elisabeta 4-12, Bucharest, Romania.
Bogdan
B
Cojocaru
Stefan
S
Neaţu
Vasile I
VI
Pârvulescu
Vasile
V
Somoghi
Nicoleta
N
Petrea
Gabriel
G
Epure
Mercedes
M
Alvaro
Hermenegildo
H
Garcia
D000327:Adsorption; D002384:Catalysis; D002606:Charcoal / Q000737:chemistry*; D002619:Chemical Warfare Agents / Q000737:chemistry* / Q000302:isolation & purification; D009151:Mustard Gas / Q000737:chemistry / Q000302:isolation & purification; D009584:Nitrogen / Q000737:chemistry*; D009946:Organothiophosphorus Compounds / Q000737:chemistry / Q000302:isolation & purification; D055668:Photochemical Processes; D012999:Soman / Q000737:chemistry / Q000302:isolation & purification; D013056:Spectrophotometry, Ultraviolet; D014025:Titanium / Q000737:chemistry*
D002606:Charcoal; D002619:Chemical Warfare Agents; D009151:Mustard Gas; D009584:Nitrogen; D009946:Organothiophosphorus Compounds; D012999:Soman; D014025:Titanium; C009495:titanium dioxide; C009680:VX-agent