Chemical Sensor Development and Antibacterial Activities Based on Polyaniline/Gemini Surfactants for Environmental Safety

Journal Article · Sun Apr 15 04:00:00 EDT 2018 · Journal of Polymers and the Environment

DOI:https://doi.org/10.1007/S10924-017-1055-9· OSTI ID:22788187

Khan, Anish; Rahman, Mohammed M.; Asiri, Abdullah M. ^[1]; Oves, Mohammad ^[2]

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1. King Abdulaziz University, Center of Excellence for Advanced Materials Research (Saudi Arabia)
2. King Abdulaziz University, Center of Excellence in Environmental Studies (Saudi Arabia)

The polyaniline doped novel anionic gemini surfactant (PANI/GS) was chemically synthesized by a micellar polymerization process and then characterized in details by X-ray powder diffractometry, scanning electron microscopy, and FTIR spectroscopy. The results show the presence of polyaniline in the emeraldine base was formed by doping with gemini surfactant. The thermal properties of the composites were studied by carrying out thermal gravimetric analysis. The PANI/GS were found to be soluble in common organic solvents such as chloroform as well as DMSO. The antibacterial activity of the obtained PANI/GS was also evaluated against Gram positive bacteria Bacillus subtilis, Gram negative bacteria Escherichia coli and antibiotics (Amoxicillin) using the agar plate. The antibacterial study showed that the PANI/GS was found to be most effective against both B. subtilis and E. coli respectively which was significant compared to the amoxicillin. Beside that thin-layer of PANI/GS onto glassy carbon electrode (GCE) was fabricated with conducting 5% nafion coating agents to fabricate a sensitive and selective Cd{sup 2+} ionsic sensor in short response time into the phosphate buffer phase. The fabricated cationic-sensor was exhibited higher sensitivity, large-dynamic concentration ranges, long-term stability, and improved electrochemical performances towards Cd{sup 2+} ions. The calibration plot is linear (r{sup 2}, 0.9799) over the large Cd{sup 2+} concentration ranges (10.0 nM–1.0 mM). The sensitivity and detection limit is calculated as 2.324 µA µM{sup −1}cm{sup −2} and 6.85 nM (signal-to-noise ratio, at a SNR of 3) respectively. These novel efforts are intiated a well-known method for significant cationic sensor development with directly fabricated nanocomposite onto GCE for the detection of hazardous toxins in ecological and environmental fields in huge scales. Graphical Abstract: .

• OSTI ID: 22788187
• Journal Information: Journal of Polymers and the Environment, Journal Name: Journal of Polymers and the Environment Journal Issue: 4 Vol. 26; ISSN 1566-2543
• Country of Publication: United States
• Language: English

Related Subjects

77 NANOSCIENCE AND NANOTECHNOLOGY
AGAR
CHLOROFORM
DOPED MATERIALS
ESCHERICHIA COLI
INFRARED SPECTRA
SCANNING ELECTRON MICROSCOPY
SIGNAL-TO-NOISE RATIO
THERMAL GRAVIMETRIC ANALYSIS
THERMODYNAMIC PROPERTIES
X-RAY DIFFRACTION