TY - JOUR
T1 - Photodegradation of methyl green using visible irradiation in ZnO suspensions. Determination of the reaction pathway and identification of intermediates by a high-performance liquid chromatography-photodiode array-electrospray ionization-mass spectrometry method
AU - Mai, F. D.
AU - Chen, C. C.
AU - Chen, J. L.
AU - Liu, S. C.
PY - 2008/5/2
Y1 - 2008/5/2
N2 - Heterogeneous photocatalytic treatment of a dye called methyl green (MG), which was simulating textile wastewater from associated auxiliary chemicals, was investigated using ZnO. A detailed investigation of the photodegradation of MG has been carried out in the ZnO suspension irradiated with visible light. The effects of various factors - viz. pH values, amount of catalyst, initial dye concentration, and the presence of NaCl, Na2CO3, H2O2, and Na2S2O8 - on the degradation efficiency were studied. Thirty-two intermediates were separated, identified, and characterized by high-performance liquid chromatography-photodiode array-electrospray ionization-mass spectrometry (HPLC-ESI-DAD-MS) technology, giving us insight into the pathways of the degradation process.
AB - Heterogeneous photocatalytic treatment of a dye called methyl green (MG), which was simulating textile wastewater from associated auxiliary chemicals, was investigated using ZnO. A detailed investigation of the photodegradation of MG has been carried out in the ZnO suspension irradiated with visible light. The effects of various factors - viz. pH values, amount of catalyst, initial dye concentration, and the presence of NaCl, Na2CO3, H2O2, and Na2S2O8 - on the degradation efficiency were studied. Thirty-two intermediates were separated, identified, and characterized by high-performance liquid chromatography-photodiode array-electrospray ionization-mass spectrometry (HPLC-ESI-DAD-MS) technology, giving us insight into the pathways of the degradation process.
KW - HPLC-ESI-DAD-MS
KW - Methyl green
KW - Photodegradation
KW - ZnO
UR - http://www.scopus.com/inward/record.url?scp=41949142885&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=41949142885&partnerID=8YFLogxK
U2 - 10.1016/j.chroma.2008.01.027
DO - 10.1016/j.chroma.2008.01.027
M3 - Article
C2 - 18242624
AN - SCOPUS:41949142885
SN - 0021-9673
VL - 1189
SP - 355
EP - 365
JO - Journal of Chromatography A
JF - Journal of Chromatography A
IS - 1-2
ER -