Highly selective “turn-on” fluorescent sensing of fluoride ion based on a conjugated polymer thin film-Fe3+ complex

Ding, Waverly W.; Xu, Jingkun; Wen, Yangping; Zhang, Jie; Liu, Hongtao; Zhang, Zhouxiang

doi:10.1016/j.aca.2017.02.027

Cited by 16 publications

(2 citation statements)

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“…The higher values of 'K' and 'n' demonstrate a preferable interaction of the Au/Bi2S3@TiO2 NTAs and Fe 3+ ions [66] . The detection limit is 0.221 µM according to this formula (3σ/S), which is much lower than the ones found in literature, as shown in Table 1 [67][68][69][70] . Furthermore, the method of synthesizing fluorophores is simple and cheap compared to the previous methods [71][72][73][74] .…”

Section: Resultscontrasting

confidence: 49%

TiO2 nanotube arrays decorated with Au and Bi2S3 nanoparticles for efficient Fe3+ ions detection and dye photocatalytic degradation

Huang

Shen

et al. 2020

Journal of Materials Science & Technology

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Due to increasingly serious environmental problems, many researchers are investigating green clean-energy to solve the world's energy supply issues. So a strategy that Au nanoparticles (Au NPs) and bismuth sulfide (Bi2S3) NPs are used to evenly decorate TiO2 nanotube arrays (TiO2 NTAs) was carried out. Composite materials demonstrated enhanced solar light absorption ability and excellent photoelectrochemical performance. This was attributed to the presence of Bi2S3 NPs with a narrow band gap and the decoration with noble metallic Au NPs which resulted in local surface plasmon resonance (LSPR) effects. The Au/Bi2S3@TiO2 NTAs composites exhibit improved photocatalytic activity for the degradation of methylene blue (MB) under irradiation of UV and visible light. Moreover, the Au/Bi2S3@TiO2NTAs exhibits high fluorescence emission at 822 nm. Due to the better binding affinity between Bi2S3, TiO2 and Fe 3+ ions, the synthesized nanocomposites exhibit high selectivity to Fe 3+ ions. The number of binding sites for Au/Bi2S3@TiO2 NTAs was estimated to be 1.41 according to the double logarithmic regression method. The calculated value of "K" was 1862 M -1 . Fluorescence emission intensity decreases with increasing concentration (30 μM to 5000 μM). The detection limit of the synthesized sensor is 0.221 µM.

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Section: Resultscontrasting

confidence: 49%

TiO2 nanotube arrays decorated with Au and Bi2S3 nanoparticles for efficient Fe3+ ions detection and dye photocatalytic degradation

Huang

Shen

et al. 2020

Journal of Materials Science & Technology

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show abstract

“…20 Along this line, the development of anion sensors from cyclic siloxanes would be very intriguing and challenging. In the meantime, a lot of molecular interactions were proposed for designing probes, including hydrogen bonding, 21,22 electrostatic interaction, 23 deprotonation, 24,25 nucleophilic substitution 26 and Si-O bond cleavage. 27,28 In the last two decades, the usage of organosilica-based cage materials has expanded to cover many fields of applications such as catalytic supports, polymers, biocompatible materials and sensors.…”

Section: Introductionmentioning

confidence: 99%