A March to Shape Optical Artificial Olfactory System toward Ultrasensitive Detection of Improvised Explosives

Zhang, Tianshi; Hu, Xiaoyun; Zu, Baiyi; Dou, Xincun

doi:10.1002/adpr.202200006

Cited by 12 publications

(4 citation statements)

References 179 publications

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“…The World Health Organization (WHO) has classified nitrite as a highly hazardous substance because of its potential to threaten human health (such as through carcinogenesis) and cause water and soil contamination over time [ 3 ]. Furthermore, nitroaromatic hydrocarbons, nitramines, and nitrates, which comprise the most used high-energy explosives, are mostly degraded by nitrite, which is one of the key components of improvised explosives [ 4 ]. The urgent requirement for on-site detection of trace nitrite is driven by the need to ensure sustainable environmental development and safeguard public health and security [ 5 , 6 , 7 , 8 ].…”

Section: Introductionmentioning

confidence: 99%

Zinc Nanocomposite Supported Chitosan for Nitrite Sensing and Hydrogen Evolution Applications

et al. 2023

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Nanoparticles of ZnO-Chitosan (Zn-Chit) composite were prepared using precipitation methods. Several analytical techniques, such as scanning electron microscope (SEM), transmitted electron microscope (TEM), powder X-ray diffraction (XRD), infrared spectroscopy (IR), and thermal analysis, were used to characterize the prepared composite. The activity of the modified composite was investigated for nitrite sensing and hydrogen production applications using various electrochemical techniques. A comparative study was performed for pristine ZnO and ZnO loaded on chitosan. The modified Zn-Chit has a linear range of detection 1–150 µM and a limit of detection (LOD) = 0.402 µM (response time ~3 s). The activity of the modified electrode was investigated in a real sample (milk). Furthermore, the anti-interference capability of the surface was utilized in the presence of several inorganic salts and organic additives. Additionally, Zn-Chit composite was employed as an efficient catalyst for hydrogen production in an acidic medium. Thus, the electrode showed long-term stability toward fuel production and enhanced energy security. The electrode reached a current density of 50 mA cm−2 at an overpotential equal to −0.31 and −0.2 V (vs. RHE) for GC/ZnO and GC/Zn-Chit, respectively. Electrode durability was studied for long-time constant potential chronoamperometry for 5 h. The electrodes lost 8% and 9% of the initial current for GC/ZnO and GC/Zn-Chit, respectively.

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Section: Introductionmentioning

confidence: 99%

Zinc Nanocomposite Supported Chitosan for Nitrite Sensing and Hydrogen Evolution Applications

et al. 2023

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“…[18] For hydrogel based chemical sensors, the change of disperse medium would affect the reaction rate and reaction process, and thus the influence of disperse medium on reaction should be considered while improving the environment stability. [19][20][21][22] Therefore, it is urgent to optimize the intrinsic polymer chains in hydrogels from the point of the construction procedure rather than from the perspective of adding other components into the disperse medium to ensure the hydrogel is stable in open environment.…”

Section: Introductionmentioning

confidence: 99%

Multi‐Hydration Induced Zwitterionic Hydrogel with Open Environment Stability for Chemical Sensing

Zhang

et al. 2023

Advanced Sensor Research

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Hydrogels with open environment stability are of great significance in the fields of microelectronics, organ regeneration, and hydrogel-based sensors. Although a series of strategies for exploring highly robust hydrogels have been proposed, it is still challenging to improve environmental stability while maintaining the original dispersed medium feature. Here, 1-vinyl-3-butylimidazolium (VBIM) and acrylic acid (AA) are used as the anionic and cationic monomers to prepare zwitterionic hydrogels through the thermal initiation polymerization. The prepared PAA-IL (polyacrylic acid-co-ionic liquid) hydrogel forms a large number of multi-hydration, including hydrogen bonds and ion-dipole interactions with water to inhibit the freezing and volatilization of water, and it possesses good structural stability due to the formation of ion bond self-association through interchain charge interaction. The robust stability of the chemical sensor with PAA-IL hydrogels as the substrate at different pH and temperature verifies the validity of the proposed design strategy. It is expected that the present zwitterionic hydrogel design strategy would shine a light on the exploration of environment-stable hydrogels and hydrogel-based chemical sensors.

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“…The detection of TNT and TNP is urgently required in a variety of scenarios since they have been widely used in military munitions and terrorist attacks, which are a severe threat to human health and life security. 1,2 Among various methods for detecting TNT or TNP, optical detection, which not only reects the essential characteristics of analytes based on optical signal variation but also has the advantages of high sensitivity, rapid response, portability, operational simplicity, as well as visualization, has been considered to be an ideal candidate. [3][4][5][6] There are two main optical methods, namely uorescent and colorimetric detection, that have been developed for detecting TNT or TNP.…”

Section: Introductionmentioning

confidence: 99%

Polyethyleneimine-capped copper nanoclusters for detection and discrimination of 2,4,6-trinitrotoluene and 2,4,6-trinitrophenol

Wang

Cai

et al. 2022

Anal. Methods

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A March to Shape Optical Artificial Olfactory System toward Ultrasensitive Detection of Improvised Explosives

Cited by 12 publications

References 179 publications

Zinc Nanocomposite Supported Chitosan for Nitrite Sensing and Hydrogen Evolution Applications

Zinc Nanocomposite Supported Chitosan for Nitrite Sensing and Hydrogen Evolution Applications

Multi‐Hydration Induced Zwitterionic Hydrogel with Open Environment Stability for Chemical Sensing

Polyethyleneimine-capped copper nanoclusters for detection and discrimination of 2,4,6-trinitrotoluene and 2,4,6-trinitrophenol

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