1
|
Review of advances in improving thermal, mechanical and electrochemical properties of polyaniline composite for supercapacitor application. Polym Bull (Berl) 2023. [DOI: 10.1007/s00289-023-04710-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/14/2023]
|
2
|
Biscay J, Findlay E, Dennany L. Electrochemical monitoring of alcohol in sweat. Talanta 2020; 224:121815. [PMID: 33379040 DOI: 10.1016/j.talanta.2020.121815] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2020] [Revised: 10/19/2020] [Accepted: 10/23/2020] [Indexed: 10/23/2022]
Abstract
Rapid, periodic monitoring and detection of ethanol (EtOH) after consumption via a non-invasive measurement has been an area of increased research in recent years. Current point-of-care or on-site detection strategies rely on single use sensors which are inadequate for monitoring during a longer period. A low cost, portable and novel approach is developed here for real-time monitoring over several days utilising electrochemical techniques. The sensor shows oxidation of the ethanol in phosphate buffer and artificial sweat using the amperometric response from the application of +0.9 V to the polyaniline modified screen printed electrode using 1 mM EtOH as the averaged amount of EtOH eliminated in sweat after the consumption of one alcoholic beverage. Our enzyme based electrochemical sensor exhibits a qualitative assessment of the presence of EtOH in small volumes (≤40 μL) of 0.1 M sodium bicarbonate and subsequently artificial sweat, with 50 measurements taken daily over 11 days. While quantitative information is not obtained, the sensor system exhibits excellent stability after 3 months' dried storage in this complex biological matrix in an oxygen free cabinet. This addresses one of the key challenges for enzyme based electrochemical sensors, namely, the ability for real-time monitoring in complex biological matrices. The qualitative response illustrates the potential for this sensor to be exploited by non-experts which suggests the promise for their wider application in next-generation wearable electronics necessary for alcohol monitoring.
Collapse
Affiliation(s)
- Julien Biscay
- WestChem, Department of Pure and Applied Chemistry, University of Strathclyde, Technology and Innovation Centre, 99 George Street, Glasgow, G1 1RD, UK; Stirling University Innovation Park, Buddi Ltd, Unit 14, Scion House, Stirling, FK9 4NF, UK
| | - Ewan Findlay
- Stirling University Innovation Park, Buddi Ltd, Unit 14, Scion House, Stirling, FK9 4NF, UK
| | - Lynn Dennany
- WestChem, Department of Pure and Applied Chemistry, University of Strathclyde, Technology and Innovation Centre, 99 George Street, Glasgow, G1 1RD, UK.
| |
Collapse
|
4
|
To KC, Ben-Jaber S, Parkin IP. Recent Developments in the Field of Explosive Trace Detection. ACS NANO 2020; 14:10804-10833. [PMID: 32790331 DOI: 10.1021/acsnano.0c01579] [Citation(s) in RCA: 58] [Impact Index Per Article: 14.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Explosive trace detection (ETD) technologies play a vital role in maintaining national security. ETD remains an active research area with many analytical techniques in operational use. This review details the latest advances in animal olfactory, ion mobility spectrometry (IMS), and Raman and colorimetric detection methods. Developments in optical, biological, electrochemical, mass, and thermal sensors are also covered in addition to the use of nanomaterials technology. Commercially available systems are presented as examples of current detection capabilities and as benchmarks for improvement. Attention is also drawn to recent collaborative projects involving government, academia, and industry to highlight the emergence of multimodal screening approaches and applications. The objective of the review is to provide a comprehensive overview of ETD by highlighting challenges in ETD and providing an understanding of the principles, advantages, and limitations of each technology and relating this to current systems.
Collapse
Affiliation(s)
- Ka Chuen To
- Department of Chemistry, University College London, 20 Gordon Street, Bloomsbury, London WC1H 0AJ, United Kingdom
| | - Sultan Ben-Jaber
- Department of Science and Forensics, King Fahad Security College, Riyadh 13232, Saudi Arabia
| | - Ivan P Parkin
- Department of Chemistry, University College London, 20 Gordon Street, Bloomsbury, London WC1H 0AJ, United Kingdom
| |
Collapse
|
5
|
Interaction of Several Toxic Heterocarbonyl Gases with Polypyrrole as a Potential Gas Sensor. CHEMOSENSORS 2020. [DOI: 10.3390/chemosensors8030084] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
The interactions of the toxic heterocarbonyl gases phosgene, carbonyl fluoride, formaldehyde, carbonyl sulfide, and acetone with polypyrrole as a toxic heterocarbonyl gas sensor, were extensively studied by density functional theory (DFT). The Becke 3-parameter, Lee-Yang-Parr (B3LYP) exchange-correlation functional methods were first tested against several high-level DFT methods employing the Dunning’s double-ζ and triple-ζ basis sets and were found to be sufficient in describing the non-covalent interactions involved in this study. The interaction of pyrrole with the heterocarbonyl gases resulted in changes in the structure and optoelectronic properties of the polymer and it was observed that acetone and formaldehyde had the strongest H-bonding interaction with polypyrrole, while the interaction of phosgene and formaldehyde resulted in the lowest energy gap and may result in its high sensitivity towards these gases. The UV-Vis absorption revealed significant red-shifted first singlet excited states (Eexcited, 1st) of the complexes and follows the same trend as the EGap values. It is shown that the Eexcited, 1st was due to the π(HOMOPy) ⟶ π*(LUMOHC) transitions and the excited state at maximum absorption (Eexcited, max) was due to the π(HOMOPy) ⟶ π*(LUMOPy) transitions. This study demonstrates the potential sensitivity and selectivity of polypyrrole as a toxic heterocarbonyl sensor.
Collapse
|
8
|
Wang H, Nie S, Li H, Ali R, Fu J, Xiong H, Li J, Wu Z, Lau WM, Mahmood N, Jia R, Liu Y, Jian X. 3D Hollow Quasi-Graphite Capsules/Polyaniline Hybrid with a High Performance for Room-Temperature Ammonia Gas Sensors. ACS Sens 2019; 4:2343-2350. [PMID: 31448586 DOI: 10.1021/acssensors.9b00882] [Citation(s) in RCA: 40] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
Designing sensing materials with novel morphologies and compositions is eminently challenging to achieve high-performance gas sensor devices. Herein, an in situ oxidative polymerization approach is developed to construct three-dimensional (3D) hollow quasi-graphite capsules/polyaniline (GCs/PANI) hierarchical hybrids by decorating protonated PANI on the surface of GCs; as a result, an immensely active and sensitive material was developed for sensing ammonia gas at room temperature. Moreover, the GCs possessed a capsule-like hollow/open structure with partially graphitized walls, and PANI nanospheres were uniformly decorated on the GC surfaces. Furthermore, the inflexible and rigid 3D ordered chemistry of these materials provides the resulting hybrids with a large interfacial surface area, which not only allows for rapid adsorption and charge transfer but also provides the necessary structural stability. The 3D hollow GCs/PANI hybrids exhibit excellent performance; the GCs/PANI-3 hybrid is highly sensitive (with a response value of 1.30) toward 10 ppm NH3 gas and has short response and recovery times of 34 and 42 s, respectively. The GCs/PANI-3 hybrid also demonstrates a good selectivity, repeatability, and long-term stability, which are attributed to the substantial synergistic effect of the GCs and PANI. The design of such a unique 3D ordered framework provides a promising pathway to achieve room-temperature gas sensors for commercial applications.
Collapse
Affiliation(s)
- Hong Wang
- School of Materials and Energy, Center for Applied Chemistry, University of Electronic Science and Technology of China, Chengdu 611731, P. R. China
| | - Song Nie
- School of Materials and Energy, Center for Applied Chemistry, University of Electronic Science and Technology of China, Chengdu 611731, P. R. China
| | - Han Li
- School of Materials and Energy, Center for Applied Chemistry, University of Electronic Science and Technology of China, Chengdu 611731, P. R. China
| | - Rashad Ali
- School of Materials and Energy, Center for Applied Chemistry, University of Electronic Science and Technology of China, Chengdu 611731, P. R. China
| | - Jianan Fu
- School of Materials and Energy, Center for Applied Chemistry, University of Electronic Science and Technology of China, Chengdu 611731, P. R. China
| | - Huajing Xiong
- School of Materials and Energy, Center for Applied Chemistry, University of Electronic Science and Technology of China, Chengdu 611731, P. R. China
| | - Jing Li
- School of Materials and Energy, Center for Applied Chemistry, University of Electronic Science and Technology of China, Chengdu 611731, P. R. China
| | - Zuquan Wu
- School of Electrical Engineering and Electronic Information, Xihua University, Chengdu, Sichuan 610039, P. R. China
| | - Woon-Ming Lau
- Center for Green Innovation, School of Mathematics and Physics, University of Science and Technology Beijing, Beijing 100083, P. R. China
| | - Nasir Mahmood
- School of Materials and Energy, Center for Applied Chemistry, University of Electronic Science and Technology of China, Chengdu 611731, P. R. China
- School of Engineering, RMIT University, 124 La Trobe Street, Melbourne, Victoria 3001, Australia
| | - Ruonan Jia
- School of Materials and Energy, Center for Applied Chemistry, University of Electronic Science and Technology of China, Chengdu 611731, P. R. China
| | - Yifan Liu
- School of Materials and Energy, Center for Applied Chemistry, University of Electronic Science and Technology of China, Chengdu 611731, P. R. China
| | - Xian Jian
- School of Materials and Energy, Center for Applied Chemistry, University of Electronic Science and Technology of China, Chengdu 611731, P. R. China
| |
Collapse
|
9
|
Katowah DF, Hussein MA, Alam MM, Gabal MA, Sobahi TR, Asiri AM, Uddin J, Rahman MM. Selective Fabrication of an Electrochemical Sensor for Pb
2+
Based on Poly(pyrrole‐co‐
o–
toluidine)/CoFe
2
O
4
Nanocomposites. ChemistrySelect 2019. [DOI: 10.1002/slct.201902714] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Affiliation(s)
- Dina F. Katowah
- Chemistry DepartmentFaculty of ScienceKing Abdulaziz University P.O. Box 80203 Jeddah 21589 Saudi Arabia
| | - Mahmoud A. Hussein
- Chemistry DepartmentFaculty of ScienceKing Abdulaziz University P.O. Box 80203 Jeddah 21589 Saudi Arabia
- Polymer chemistry Lab.Chemistry DepartmentFaculty of ScienceAssiut University Assiut 71516 Egypt
| | - M. M. Alam
- Department of Chemical Engineering and Polymer ScienceShahjalal University of Science and Technology Sylhet 3100 Bangladesh
| | - M. A. Gabal
- Chemistry DepartmentFaculty of ScienceKing Abdulaziz University P.O. Box 80203 Jeddah 21589 Saudi Arabia
- Chemistry DepartmentFaculty of ScienceBenha University, Benha Egypt
| | - T. R. Sobahi
- Chemistry DepartmentFaculty of ScienceKing Abdulaziz University P.O. Box 80203 Jeddah 21589 Saudi Arabia
| | - Abdullah M. Asiri
- Chemistry DepartmentFaculty of ScienceKing Abdulaziz University P.O. Box 80203 Jeddah 21589 Saudi Arabia
- Center of Excellence for Advanced Materials Research (CEAMR)King Abdulaziz University Jeddah 21589 Saudi Arabia
| | - Jamal Uddin
- Center for NanotechnologyDepartment of Natural SciencesCoppin State University 2500 W. N. Ave Baltimore, MD USA
| | - Mohammed M. Rahman
- Chemistry DepartmentFaculty of ScienceKing Abdulaziz University P.O. Box 80203 Jeddah 21589 Saudi Arabia
- Center of Excellence for Advanced Materials Research (CEAMR)King Abdulaziz University Jeddah 21589 Saudi Arabia
| |
Collapse
|
10
|
Humidity properties of Schiff base polymers. OPEN CHEM 2018. [DOI: 10.1515/chem-2018-0106] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
AbstractThe synthesized Schiff base polymers were investigated for humidity and chloroform response characteristics. The crystal structure of polymers were analyzed using X-ray diffraction (X-RD) method. We used the QCM (quartz crystal microbalance) method for the analyses of the water steam adsorption and desorption ratio of polymers. The experimental results showed that Schiff base polymers were very sensitive to humidity and chloroform at room temperature and it was possible to use it as a sensing element in moisture sensor applications.
Collapse
|