Washable Colorimetric Nanofiber Nonwoven for Ammonia Gas Detection

Oh, Hyun Ju; Yeang, Byeong Jin; Park, Young Ki; Choi, Hyun Jung; Kim, Jong H.; Kang, Young Sik; Bae, Younghwan; Kim, Jung Yeon; Lim, Seung Ju; Lee, Woo‐Sung; Hahm, Wan‐Gyu

doi:10.3390/polym12071585

Cited by 27 publications

(12 citation statements)

References 37 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Such a huge increase in response in hybrids with metal oxides was also observed in [ 147 ] for CNT/ZnO nanowire networks, and this effect is attributed to the higher transfer of electrons achieved in hybrid materials upon exposure to ammonia. Recently, sensors based on green materials and biopolymers were created [ 148 , 149 , 150 ]; therefore, the study of hybrids of these materials and carbon nanomaterials is expected in the future.…”

Section: Gas Sensors Based On Carbon Nanotubesmentioning

confidence: 99%

Recent Advances in Ammonia Gas Sensors Based on Carbon Nanomaterials

et al. 2021

View full text Add to dashboard Cite

This review paper is devoted to an extended analysis of ammonia gas sensors based on carbon nanomaterials. It provides a detailed comparison of various types of active materials used for the detection of ammonia, e.g., carbon nanotubes, carbon nanofibers, graphene, graphene oxide, and related materials. Different parameters that can affect the performance of chemiresistive gas sensors are discussed. The paper also gives a comparison of the sensing characteristics (response, response time, recovery time, operating temperature) of gas sensors based on carbon nanomaterials. The results of our tests on ammonia gas sensors using various techniques are analyzed. The problems related to the recovery of sensors using various approaches are also considered. Finally, the impact of relative humidity on the sensing behavior of carbon nanomaterials of various different natures was estimated.

show abstract

Section: Gas Sensors Based On Carbon Nanotubesmentioning

confidence: 99%

Recent Advances in Ammonia Gas Sensors Based on Carbon Nanomaterials

et al. 2021

View full text Add to dashboard Cite

show abstract

“…The detection performance of the fabricated textile sensors was characterized using a gas test system, as described in our previous report [32]. The gas test system (Figure 1) allowed the color change of the textile sensors when exposed to gas to be measured in real time.…”

Section: Gas Detection Performancementioning

confidence: 99%

Colorimetric Textile Sensor for the Simultaneous Detection of NH3 and HCl Gases

Park¹,

Bae

et al. 2020

Polymers

Self Cite

View full text Add to dashboard Cite

For the immediate detection of strong gaseous alkalis and acids, colorimetric textile sensors based on halochromic dyes are highly valuable for monitoring gas leakages. To date, colorimetric textile sensors for dual-gas detection have usually been fabricated by electrospinning methods. Although nanofibrous sensors have excellent pH sensitivity, they are difficult to use commercially because of their low durability, low productivity, and high production costs. In this study, we introduce novel textile sensors with high pH sensitivity and durability via a facile and low-cost screen-printing method. To fabricate these textiles sensors, Dye 3 and RhYK dyes were both incorporated into a polyester fabric. The fabricated sensors exhibited high detection rates (<10 s) and distinctive color changes under alkaline or acidic conditions, even at low gas concentrations. Furthermore, the fabricated sensors showed an outstanding durability and reversibility after washing and drying and were confirmed to contain limited amounts of hazardous materials. Thus, our results show that the fabricated textile sensors could be used in safety apparel that changes its color in the presence of harmful gases.

show abstract

“…Such colorimetric diagnostic tool is characterized by higher sensitivity and specificity, portability, low cost, simplicity of preparation and real-time visual determination of the targeted analyte. In addition, it needs less labor and simple instrumentations [ 14 , 15 , 16 , 17 , 18 ]. Nanomaterials have been significant for a diversity of applications, such as drug delivery, ecological monitoring, foodstuffs processing and medical diagnostic tools [ 19 , 20 , 21 , 22 ].…”

Section: Introductionmentioning

confidence: 99%

Solution Blowing Spinning Technology towards Green Development of Urea Sensor Nanofibers Immobilized with Hydrazone Probe

2021

View full text Add to dashboard Cite

Cellulose has been one of the most widespread materials due to its renewability, excellent mechanical properties, biodegradability, high absorption ability, biocompatibility and cheapness. Novel, simple and green colorimetric fibrous film sensor was developed by immobilization of urease enzyme (U) and tricyanofuran hydrazone (TCFH) molecular probe onto cellulose nanofibers (CNF). Cellulose acetate nanofibers (CANF) were firstly prepared from cellulose acetate using the simple, green and low cost solution blowing spinning technology. The produced CANF was exposed to deacetylation to introduce CNF, which was then treated with a mixture of TCFH and urease enzyme to introduce CNF-TCFH-U nanofibrous biosensor. CNF were reinforced with tricyanofuran hyrazone molecular probe and urease enzyme was encapsulated into calcium alginate biopolymer to establish a biocomposite film. This CNF-TCFH-U naked-eye sensor can be applied as a disposable urea detector. CNF demonstrated a large surface area and was utilized as a carrier for TCFH, which is the spectroscopic probe and urease is a catalyst. The biochromic CNF-TCFH-U nanofibrous biosensor responds to an aqueous medium of urea via a visible color signal changing from off-white to dark pink. The morphology of the generated CNF and CNF-TCFH-U nanofibrous films were characterized by different analytical tools, including energy-dispersive X-ray patterns (EDX), polarizing optical microscope (POM), Fourier-transform infrared spectroscopy (FT-IR) and scanning electron microscope (SEM). SEM images of CNF-TCFH-U nanofibers demonstrated diameters between 800 nm and 2.5 μm forming a nonwoven fabric with a homogeneous distribution of TCFH/urease-containing calcium alginate nanoparticles on the surface of CNF. The morphology of the cross-linked calcium alginate nanoparticles was also explored using transmission electron microscopy (TEM) to indicate an average diameter of 56–66 nm. The photophysical performance of the prepared CNF-TCFH-U was also studied by CIE Lab coloration parameters. The nanofibrous film biosensor displayed a relatively rapid response time (5–10 min) and a limit of detection as low as 200 ppm and as high as 1400 ppm. Tricyanofuran hydrazone is a pH-responsive disperse dye comprising a hydrazone detection group. Determination of urea occurs through a proton transfer from the hydrazone group to the generated ammonia from the reaction of urea with urease.

show abstract

Washable Colorimetric Nanofiber Nonwoven for Ammonia Gas Detection

Cited by 27 publications

References 37 publications

Recent Advances in Ammonia Gas Sensors Based on Carbon Nanomaterials

Recent Advances in Ammonia Gas Sensors Based on Carbon Nanomaterials

Colorimetric Textile Sensor for the Simultaneous Detection of NH3 and HCl Gases

Solution Blowing Spinning Technology towards Green Development of Urea Sensor Nanofibers Immobilized with Hydrazone Probe

Contact Info

Product

Resources

About