We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
Terthiophene-functionalized mesoporous silica-based fluorescence sensor for the detection of trace methyl orange in aqueous media.
- Authors
Huang, Jing; Wang, Jing; Li, Dong; Chen, Pengxiang; Liu, Hai-Bo
- Abstract
A terthiophene-functionalized mesoporous SBA-15 silica, i.e., TTU-SBA-15, was successfully developed and used as a highly selective and ultrasensitive fluorescence sensor for methyl orange (MO) detection. When the concentration of MO was increased, the fluorescence emission intensity of TTU-SBA-15 suspensions at 452 nm gradually decreased at an excitation wavelength of 368 nm, and the color of the suspension solutions changed obviously from blue to dark under 365 nm UV light. The fluorescence intensity at 452 nm was linearly proportional to the concentration of MO in the range 0.20 − 2.0 μM, with a detection limit of 0.092 μM. Competitive pollutants, variations in pH, and sample recycling had subtle or negligible effects on the detection of MO. TTU-SBA-15 was applied to the determination of MO in tap water, and recoveries from spiked samples were in the range 98.3 − 103.0%. This study provides a convenient and effective strategy to realize highly sensitive and selective sensors that could target dyes via the functional modification of mesoporous materials.
- Subjects
MESOPOROUS silica; FLUORESCENCE; MESOPOROUS materials; DRINKING water; DETECTORS; DETECTION limit
- Publication
Microchimica Acta, 2021, Vol 188, Issue 12, p1
- ISSN
0026-3672
- Publication type
Article
- DOI
10.1007/s00604-021-05063-x