Room-Temperature Ammonia Sensing Using Polyaniline-Coated Laser-Induced Graphene DOI Creative Commons
José Carlos Santos-Ceballos, Foad Salehnia, Frank Güell

et al.

Sensors, Journal Year: 2024, Volume and Issue: 24(23), P. 7832 - 7832

Published: Dec. 7, 2024

The reliable detection of ammonia at room temperature is crucial for not only maintaining environmental safety but also reducing the risks hazardous pollutants. In this study, electrochemical modification laser-induced graphene (LIG) with polyaniline (PANI) led to development a chemo-resistive nanocomposite (PANI@LIG) detecting levels temperature. composite characterized by field emission scanning electron microscopy, Fourier transforms infrared, and Raman X-ray photoelectron spectroscopy. This work marks first utilization PANI@LIG gas sensing introduces simple effective approach fabricating low-cost wearable sensors high sensitivity flexibility.

Language: Английский

Limitation of Ammonia Exposure among Workers in Fertilizers Industry Using Modern Modified Technology Towards Sustainability DOI Creative Commons

Safinaz M. Elhadad,

Taher Mansour,

Ibrahim A. Elshibiny

et al.

Research Square (Research Square), Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 10, 2025

Abstract Background: Fertilizer production is a worldwide industry. Workers in the process area may be exposed to mineral dust, water-soluble and insoluble compounds, nitric acid, nitrogen dioxide, monoxide, ammonia (NH3), hydrogen fluoride which might emitted into work environment different departments. Subjects methods: The study was conducted one of modern nitrogenous fertilizer companies Alexandria, Egypt. company specializes producing high quality fertilizers, mainly Granular Urea (46%) as final product Anhydrous NH3 an intermediate using advanced technology. The involved descriptive research adopts quantitative case approach. Pre-designed pre- tested structured two questionnaires for workers' data were used. first questionnaire (A) used professional characters occupational hygiene profile. second (B) optimal symptom score employees’ complaints their awareness about exposure NH3. gas measured ten working areas factory. A direct reading- infrared spectrophotometry method Results: synthesis factory based on reliable proven steps controlled through automated operation plants machines. In urea plant, possible available emission reduction techniques All workers are males (100%). Current position includes specifications technicians (n=125, 74.4 %) engineers (n=43, 25.6%). technicians' job duties (n=77, 61.6%), (n=2, 1.6%), maintenance (n=32, 25.6%) inspection (n=14, 11.2%). Otherwise, ' (n=33, 76.7%), (n=1, 2.3%), (n=9, 20.9%). Work regime day shift (n=119, 70.8%), night (n=49, 29.2%). total number hours/week ranges from 24-48 hours with mean 47.68±1.85 median 48 hours. Considering availability usage personal protective equipment (PPE) (n=167, 99.4%) no smoking habits (n=168,100%), this reflects increased knowledge awareness, promoted safety culture both management employees. There statistically significant difference between years employment eyes, nose sinuses symptoms (P = 0.001, 0.019 0.009 respectively). Regarding concentration stations, it found lower than Threshold Limit Value- Time weighted average (TLV-TWA) NH3 which 25 ppm. Conclusion: current highlighted role applying modified industry limiting potential hazards, improving health workers, achieving sustainability.

Language: Английский

Citations

0
Trends in volatile organic compound-based metabolomics for biomarker discovery DOI
Husam Kafeenah, Michael O. Eze

Microchemical Journal, Journal Year: 2025, Volume and Issue: unknown, P. 113700 - 113700

Published: April 1, 2025

Language: Английский

Citations

0
Hydrophobic COFs Promote NH3 Sensing Response of Pyridine-Based Polymers Under High Humidity DOI

Xue Zhang,

Dongfeng Ma,

Yongqing Zhao

et al.

ACS Applied Polymer Materials, Journal Year: 2025, Volume and Issue: unknown

Published: April 21, 2025

Language: Английский

Citations

0
Temperature-Dependent Modulation of ZnO-NiO Composite Thin Films for the Development of Ammonia Gas Sensor DOI
V. Suresh, P. Nagaraju, Velavan Kathirvelu

et al.

Journal of Alloys and Compounds, Journal Year: 2025, Volume and Issue: unknown, P. 180719 - 180719

Published: May 1, 2025

Language: Английский

Citations

0
A Minimal Electronic Nose Based on Graphene Functionalized with Metalated Pyrazinoporphyrazines and Phthalocyanines for Ammonia, Benzene, and Hydrogen Sulfide Discrimination DOI Creative Commons
Sonia Freddi, Luca Vaghi, Andrea Penoni

et al.

Chemosensors, Journal Year: 2025, Volume and Issue: 13(5), P. 165 - 165

Published: May 5, 2025

The development of electronic noses is, nowadays, essential for several applications, including breath analysis and industrial security. Ammonia, benzene, hydrogen sulfide are particularly important due to their environmental health impacts. Here, graphene-based sensors, functionalized with unconventional in-house synthesized zinc copper octyl-pyrazinoporphyrazines commercially available phthalocyanine, have been prepared. Enhanced solubility given by the octyl chains allowed us exploit drop-casting as a straightforward functionalization technique. sensors demonstrated excellent performance detecting ammonia, single sensor, competitive detection limit high sensitivity compared state art. In particular, enabled sulfide, which no response is observed bare graphene, lowered all gases graphene. Additionally, prepared assembled into an e-nose that shows promising potentiality be used both medical applications thanks its discrimination capability mixtures.

Language: Английский

Citations

0
Recent Applications and Future Trends of Nanostructured Thin Films-Based Gas Sensors Produced by Magnetron Sputtering DOI Open Access
Pedro Catalão Moura, Susana Sério

Coatings, Journal Year: 2024, Volume and Issue: 14(9), P. 1214 - 1214

Published: Sept. 20, 2024

The field of gas sensors has been developing for the last year due to necessity characterizing compounds and, in particular, volatile organic whose detection can be special interest a vast range applications that extend from clinical evaluation environmental monitoring. Among all potential techniques develop sensors, magnetron sputtering emerged as one most suitable methodologies production large-scale uniform coatings, with high packing density and strong adhesion substrate at relatively low temperatures. Furthermore, it presents elevated deposition rates, allows growth thin films purity, permits precise control film thickness, enables simple manufacturing power consumption consequently, costs involved production. This work reviewed current developed through VOCs assessment by gathering relevant scientific works published. A total 10 were considered this work. Additionally, 13 other identified promising targets classified future trends field. Overall, summarizes state-of-the-art technology, allowing community take step forward explore new research areas.

Language: Английский

Citations

1
Room-Temperature Ammonia Sensing Using Polyaniline-Coated Laser-Induced Graphene DOI Creative Commons
José Carlos Santos-Ceballos, Foad Salehnia, Frank Güell

et al.

Sensors, Journal Year: 2024, Volume and Issue: 24(23), P. 7832 - 7832

Published: Dec. 7, 2024

The reliable detection of ammonia at room temperature is crucial for not only maintaining environmental safety but also reducing the risks hazardous pollutants. In this study, electrochemical modification laser-induced graphene (LIG) with polyaniline (PANI) led to development a chemo-resistive nanocomposite (PANI@LIG) detecting levels temperature. composite characterized by field emission scanning electron microscopy, Fourier transforms infrared, and Raman X-ray photoelectron spectroscopy. This work marks first utilization PANI@LIG gas sensing introduces simple effective approach fabricating low-cost wearable sensors high sensitivity flexibility.

Language: Английский

Citations

1