Development of PANI/BN-based absorbents for water remediation

Abstract

In this research, novel PANI/BN-based absorbent was prepared by bonding polyaniline and bentonite for water remediation and their structures were characterized by scanning electron microscopy (SEM) and Fourier transform infrared spectroscopy (FTIR). The effect of pH, concentration of metal, and dosage amount on synthesized novel PANI/BN-based absorbent was investigated in detail. The result indicated that the PANI/BN-based absorbent has an excellent adsorption performance towards Cu, Pb, and Ni, and the highest binding capacity of 130 mg g−1 for Ni was obtained under normal conditions. The adsorption of PANI/BN absorbent was found to depend on pH when pH < 7.0, but the adsorption has been found independent from the ionic bond effect. The adsorption at optimum pH for Cu (pH 6) and Pb (pH 5) was observed as 85 mg g−1 and 105 mg g−1, respectively. The best results collected at those conditions of isotherm data and adsorption kinetics are represented by the Langmuir model and pseudo-second order equation, respectively. Thermodynamic results (ΔH > 0, ΔS > 0, ΔG < 0) showed that the adsorption process of Cu, Ni, and Pb is significantly increased by the synthesized novel PANI/BN-based absorbent.

Novel Synthesis of Sensitive Cu-ZnO Nanorod–Based Sensor for Hydrogen Peroxide Sensing

“…The electrochemical technique is a superior alternative to the other methods because of its inherent sensitivity, wide detection range, rapid response, low cost, and good selectivity ( Lin et al, 2010 ; Aziz et al, 2022a ). Materials with metal-oxide properties have proven to be effective in the field of electrochemical sensing ( Arsalan et al, 2019 ; Sooppy Nisar et al, 2019 ; Awais et al, 2021a ; Arsalan et al, 2021b ). There are many metal oxides with good performance in the biosensor and chemical sensor fields, including tin oxide, tungsten oxide, copper oxide, titanium dioxide, magnesium oxide, cuprous oxide, and zinc oxide (ZnO) ( Khan et al, 2019 ; Awais et al, 2021b ; Awais et al, 2021c ; Khan et al, 2022 ).…”

Rational Design of Highly Efficient One‐pot Synthesis of Ternary PtNiCo/FTO Nanocatalyst for Hydroquinone and Catechol Sensing

“…The Achilles heel of these nanomaterials is that they form a closely packed structure after assembly on the electrode surface, which reduces its specific surface area and escalates its electrochemical performance [6]. The rapid growth of industry in all aspects has led to the release of a large number of potentially toxic compounds that have ravaged the earth‘s balance and increased toxicity at an alarming rate [7, 8]. These widely dispersed contaminants are directly related to human health problems [9, 10].…”

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“…The electrochemical technique is a superior alternative to the other methods because of its inherent sensitivity, wide detection range, rapid response, low cost, and good selectivity (Lin et al, 2010;Aziz et al, 2022a). Materials with metal-oxide properties have proven to be effective in the field of electrochemical sensing (Arsalan et al, 2019;Sooppy Nisar et al, 2019;Awais et al, 2021a;Arsalan et al, 2021b). There are many metal oxides with good performance in the biosensor and chemical sensor fields, including tin oxide, tungsten oxide, copper oxide, titanium dioxide, magnesium oxide, cuprous oxide, and zinc oxide (ZnO) (Khan et al, 2019;Awais et al, 2021b;Awais et al, 2021c;Khan et al, 2022).…”