TY - JOUR
T1 - Gadolinium doped tin dioxide nanoparticles
T2 - An efficient visible light active photocatalyst
AU - Al-Hamdi, Abdullah M.
AU - Sillanpää, Mika
AU - Dutta, Joydeep
N1 - Publisher Copyright:
© 2015 The Chinese Society of Rare Earths.
PY - 2015/12/1
Y1 - 2015/12/1
N2 - Photocatalytic degradation of phenol with sol-gel prepared rare earth doped tin dioxide (SnO2) nanoparticles was reported. Gadolinium doped tin dioxide (SnO2:Gd) nanoparticles were found to absorb higher visible light compared to lanthanum, neodymium and cerium doped materials that were studied in detail. Photocatalytic degradation of phenol under artificial white light and sunlight in the presence of SnO2:Gd nanoparticles was studied with high performance liquid chromatography (HPLC), capillary electrophoresis (CE), total organic carbon (TOC) measurements and the determination of chemical oxygen demand (COD). Clear correlations between the results obtained from these multiple measurements were found, and a kinetic pathway for the degradation process was proposed. Within 150 min of solar irradiation, the TOC of a 10 ppm phenol solution in water was reduced by 95%-99%, thus demonstrating that SnO2:Gd nanoparticles are efficient visible light photocatalysts.
AB - Photocatalytic degradation of phenol with sol-gel prepared rare earth doped tin dioxide (SnO2) nanoparticles was reported. Gadolinium doped tin dioxide (SnO2:Gd) nanoparticles were found to absorb higher visible light compared to lanthanum, neodymium and cerium doped materials that were studied in detail. Photocatalytic degradation of phenol under artificial white light and sunlight in the presence of SnO2:Gd nanoparticles was studied with high performance liquid chromatography (HPLC), capillary electrophoresis (CE), total organic carbon (TOC) measurements and the determination of chemical oxygen demand (COD). Clear correlations between the results obtained from these multiple measurements were found, and a kinetic pathway for the degradation process was proposed. Within 150 min of solar irradiation, the TOC of a 10 ppm phenol solution in water was reduced by 95%-99%, thus demonstrating that SnO2:Gd nanoparticles are efficient visible light photocatalysts.
KW - organic by-products
KW - phenol photo-degradation
KW - rare earth dopants
KW - solar irradiation
KW - tin dioxide nanoparticles
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U2 - 10.1016/S1002-0721(14)60557-3
DO - 10.1016/S1002-0721(14)60557-3
M3 - Article
AN - SCOPUS:84949510119
SN - 1002-0721
VL - 33
SP - 1275
EP - 1283
JO - Journal of Rare Earths
JF - Journal of Rare Earths
IS - 12
ER -