TY - JOUR
T1 - Sensitizers on inorganic carriers for decomposition of the chemical warfare agent yperite
AU - Cojocaru, Bogdan
AU - Parvulescu, Vasile I.
AU - Preda, Elena
AU - Iepure, Gabriel
AU - Somoghi, Vasile
AU - Carbonell Llopis, Esther
AU - Alvaro, Mercedes
AU - García, Hermenegildo
PY - 2008/7/1
Y1 - 2008/7/1
N2 - Sulfur-containing compounds, such as mercaptans, alkali sulfides, alkali sulfites, and alkali thiosulfates, are byproducts of industrial processes and pollutants of waste and natural waters. Other sulfur-containing compounds such as yperite are dangerous chemical weapons. Efficient photocatalytic decomposition of these molecules is a process that can find applications in emergency situations or for the controlled destruction of chemical warfare stockpiles. A series of heterogeneous photocatalysts consisting of a metal phthalocyanine or 2,4,6-triphenylpyrylium as photoactive components encapsulated inside the cavities of zeolite Y or the mesoporous channels of MCM-41 or supported on silica ortitania-silica was tested for the photocatalytic decomposition of yperite. Two types of photoreactors, either an open reactor naturally aerated or a closed quartz tube with a constant airflow using UV or visible ambient light, were used. These tests demonstrated that iron and manganese phthalocyanine and 2,4,6-triphenylpyrylium embedded in NaY ortitania-silica can be suitable solid photocatalysts for the degradation of yperite using UV and visible irradiation.
AB - Sulfur-containing compounds, such as mercaptans, alkali sulfides, alkali sulfites, and alkali thiosulfates, are byproducts of industrial processes and pollutants of waste and natural waters. Other sulfur-containing compounds such as yperite are dangerous chemical weapons. Efficient photocatalytic decomposition of these molecules is a process that can find applications in emergency situations or for the controlled destruction of chemical warfare stockpiles. A series of heterogeneous photocatalysts consisting of a metal phthalocyanine or 2,4,6-triphenylpyrylium as photoactive components encapsulated inside the cavities of zeolite Y or the mesoporous channels of MCM-41 or supported on silica ortitania-silica was tested for the photocatalytic decomposition of yperite. Two types of photoreactors, either an open reactor naturally aerated or a closed quartz tube with a constant airflow using UV or visible ambient light, were used. These tests demonstrated that iron and manganese phthalocyanine and 2,4,6-triphenylpyrylium embedded in NaY ortitania-silica can be suitable solid photocatalysts for the degradation of yperite using UV and visible irradiation.
UR - http://www.scopus.com/inward/record.url?scp=46849110981&partnerID=8YFLogxK
U2 - 10.1021/es800170a
DO - 10.1021/es800170a
M3 - Article
C2 - 18678025
AN - SCOPUS:46849110981
SN - 0013-936X
VL - 42
SP - 4908
EP - 4913
JO - Environmental Science and Technology
JF - Environmental Science and Technology
IS - 13
ER -