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Dye modification of nanofibrous silicon oxide membranes for colorimetric HCl and NH3 sensing

(2016) ADVANCED FUNCTIONAL MATERIALS. 26(33). p.5987-5996
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Abstract
Colorimetric sensors for monitoring and visual reporting of acidic environments both in water and air are highly valuable in various fields, such as safety and technical textiles. Until now sol-gel-based colorimetric sensors are usually nonflexible bulk glass or thin-film sensors. Large-area, flexible sensors usable in strong acidic environments are not available. Therefore, in this study organically modified silicon oxide nanofibrous membranes are produced by combining electrospinning and sol-gel technology. Two pH-indicator dyes are immobilized in the nanofibrous membranes: methyl yellow via doping, methyl red via both doping, and covalent bonding. This resulted in sensor materials with a fast response time and high sensitivity for pH-change in water. The covalent bond between dye and the sol-gel network showed to be essential to obtain a reusable pH-sensor in aqueous environment. Also a high sensitivity is obtained for sensing of HCl and NH3 vapors, including a memory function allowing visual read-out up to 20 min after exposure. These fast and reversible, large-area flexible nanofibrous colorimetric sensors are highly interesting for use in multiple applications such as protective clothing and equipment. Moreover, the sensitivity to biogenic amines is demonstrated, offering potential for control and monitoring of food quality.
Keywords
ACID-BASE EQUILIBRIA, ELECTROSPUN NANOFIBERS, SOL-GEL MATRIX, PH-INDICATOR, METHYL RED, TEXTILE MATERIALS, NITRAZINE YELLOW, OPTICAL SENSORS, GAS, NANOPARTICLES

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Citation

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MLA
Geltmeyer, Jozefien, et al. “Dye Modification of Nanofibrous Silicon Oxide Membranes for Colorimetric HCl and NH3 Sensing.” ADVANCED FUNCTIONAL MATERIALS, vol. 26, no. 33, 2016, pp. 5987–96, doi:10.1002/adfm.201602351.
APA
Geltmeyer, J., Vancoillie, G., Steyaert, I., Breyne, B., Cousins, G., Lava, K., … De Clerck, K. (2016). Dye modification of nanofibrous silicon oxide membranes for colorimetric HCl and NH3 sensing. ADVANCED FUNCTIONAL MATERIALS, 26(33), 5987–5996. https://doi.org/10.1002/adfm.201602351
Chicago author-date
Geltmeyer, Jozefien, Gertjan Vancoillie, Iline Steyaert, Bet Breyne, Gabriella Cousins, Kathleen Lava, Richard Hoogenboom, Klaartje De Buysser, and Karen De Clerck. 2016. “Dye Modification of Nanofibrous Silicon Oxide Membranes for Colorimetric HCl and NH3 Sensing.” ADVANCED FUNCTIONAL MATERIALS 26 (33): 5987–96. https://doi.org/10.1002/adfm.201602351.
Chicago author-date (all authors)
Geltmeyer, Jozefien, Gertjan Vancoillie, Iline Steyaert, Bet Breyne, Gabriella Cousins, Kathleen Lava, Richard Hoogenboom, Klaartje De Buysser, and Karen De Clerck. 2016. “Dye Modification of Nanofibrous Silicon Oxide Membranes for Colorimetric HCl and NH3 Sensing.” ADVANCED FUNCTIONAL MATERIALS 26 (33): 5987–5996. doi:10.1002/adfm.201602351.
Vancouver
1.
Geltmeyer J, Vancoillie G, Steyaert I, Breyne B, Cousins G, Lava K, et al. Dye modification of nanofibrous silicon oxide membranes for colorimetric HCl and NH3 sensing. ADVANCED FUNCTIONAL MATERIALS. 2016;26(33):5987–96.
IEEE
[1]
J. Geltmeyer et al., “Dye modification of nanofibrous silicon oxide membranes for colorimetric HCl and NH3 sensing,” ADVANCED FUNCTIONAL MATERIALS, vol. 26, no. 33, pp. 5987–5996, 2016.
@article{8166617,
  abstract     = {{Colorimetric sensors for monitoring and visual reporting of acidic environments both in water and air are highly valuable in various fields, such as safety and technical textiles. Until now sol-gel-based colorimetric sensors are usually nonflexible bulk glass or thin-film sensors. Large-area, flexible sensors usable in strong acidic environments are not available. Therefore, in this study organically modified silicon oxide nanofibrous membranes are produced by combining electrospinning and sol-gel technology. Two pH-indicator dyes are immobilized in the nanofibrous membranes: methyl yellow via doping, methyl red via both doping, and covalent bonding. This resulted in sensor materials with a fast response time and high sensitivity for pH-change in water. The covalent bond between dye and the sol-gel network showed to be essential to obtain a reusable pH-sensor in aqueous environment. Also a high sensitivity is obtained for sensing of HCl and NH3 vapors, including a memory function allowing visual read-out up to 20 min after exposure. These fast and reversible, large-area flexible nanofibrous colorimetric sensors are highly interesting for use in multiple applications such as protective clothing and equipment. Moreover, the sensitivity to biogenic amines is demonstrated, offering potential for control and monitoring of food quality.}},
  author       = {{Geltmeyer, Jozefien and Vancoillie, Gertjan and Steyaert, Iline and Breyne, Bet and Cousins, Gabriella and Lava, Kathleen and Hoogenboom, Richard and De Buysser, Klaartje and De Clerck, Karen}},
  issn         = {{1616-301X}},
  journal      = {{ADVANCED FUNCTIONAL MATERIALS}},
  keywords     = {{ACID-BASE EQUILIBRIA,ELECTROSPUN NANOFIBERS,SOL-GEL MATRIX,PH-INDICATOR,METHYL RED,TEXTILE MATERIALS,NITRAZINE YELLOW,OPTICAL SENSORS,GAS,NANOPARTICLES}},
  language     = {{eng}},
  number       = {{33}},
  pages        = {{5987--5996}},
  title        = {{Dye modification of nanofibrous silicon oxide membranes for colorimetric HCl and NH3 sensing}},
  url          = {{http://dx.doi.org/10.1002/adfm.201602351}},
  volume       = {{26}},
  year         = {{2016}},
}

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