TY - JOUR
T1 - FDU-15-Pt composites with different Pt loading and their electrocatalytic reduction to ultratrace nitroaromatic compounds
AU - Nie, Dongxia
AU - Liang, Ying
AU - Zhou, Tianshu
AU - Sun, Qian
AU - Shi, Guoyue
AU - Jin, Litong
PY - 2012/6
Y1 - 2012/6
N2 - FDU-15 is a hexagonal mesoporous material with nanometer-sized, highly ordered arrays and large special surface area. In this work, FDU-15-Pt with 2.0%, 5.0% and 8.0% Pt loading were synthesised and used for electrochemical detection of trace nitroaromatic compounds (NACs). The FDU-15-Pt samples were characterised by CO Chemisorption, transmission electron microscopy (TEM) and X-ray diffraction (XRD). It has been demonstrated that FDU-15-Pt with 2.0% Pt loading has the smallest Pt particle size of 2.9 nm, highest Pt metal dispersion of 37.7% and largest Pt metal surface area of 21.36m2g-1. The FDU-15-Pt/PDDA modified electrode were assembled by electrostatic adsorption of Poly (diallyldimethylammonium chloride) (PDDA) and FDU-15-Pt. The 2.0% FDU-15-Pt modified sensor showed higher selectivity for NACs than those of 5.0% and 8.0% FDU-15-Pt, which were verified by electrochemical experiments. A linear response over TNT concentration ranging from 8.8 × 10-9 M to 1.2 × 10-5M was exhibited with a low detection limit of 2.9 × 10-9 M (S/N = 3). Moreover, the proposed 2.0% FDU-15-Pt/PDDA modified sensor has been applied to the detection of NACs in spiked environmental water samples and shows promise for fast and accurate determination of trace NACs in real samples.
AB - FDU-15 is a hexagonal mesoporous material with nanometer-sized, highly ordered arrays and large special surface area. In this work, FDU-15-Pt with 2.0%, 5.0% and 8.0% Pt loading were synthesised and used for electrochemical detection of trace nitroaromatic compounds (NACs). The FDU-15-Pt samples were characterised by CO Chemisorption, transmission electron microscopy (TEM) and X-ray diffraction (XRD). It has been demonstrated that FDU-15-Pt with 2.0% Pt loading has the smallest Pt particle size of 2.9 nm, highest Pt metal dispersion of 37.7% and largest Pt metal surface area of 21.36m2g-1. The FDU-15-Pt/PDDA modified electrode were assembled by electrostatic adsorption of Poly (diallyldimethylammonium chloride) (PDDA) and FDU-15-Pt. The 2.0% FDU-15-Pt modified sensor showed higher selectivity for NACs than those of 5.0% and 8.0% FDU-15-Pt, which were verified by electrochemical experiments. A linear response over TNT concentration ranging from 8.8 × 10-9 M to 1.2 × 10-5M was exhibited with a low detection limit of 2.9 × 10-9 M (S/N = 3). Moreover, the proposed 2.0% FDU-15-Pt/PDDA modified sensor has been applied to the detection of NACs in spiked environmental water samples and shows promise for fast and accurate determination of trace NACs in real samples.
KW - FDU-15-Pt
KW - detection
KW - electrocatalytic reduction
KW - nitroaromatic compounds
UR - https://www.scopus.com/pages/publications/84861513972
U2 - 10.1080/03067319.2010.520124
DO - 10.1080/03067319.2010.520124
M3 - 文章
AN - SCOPUS:84861513972
SN - 0306-7319
VL - 92
SP - 832
EP - 843
JO - International Journal of Environmental Analytical Chemistry
JF - International Journal of Environmental Analytical Chemistry
IS - 7
ER -
