Synthesis and electrochemical behaviour of GO doped ZrP nanocomposite membranes

Kumari, Vanita; Badru, Rahul; Singh, Sandeep Kumar; Kaushal, Sandeep; Singh, Prit Pal

doi:10.1016/j.jece.2020.103690

Cited by 9 publications

(2 citation statements)

References 42 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…At present, the recovery of rare earth ions mainly includes chemical precipitation, solvent extraction, membrane separation, ion exchange, etc. [ 9 , 10 , 11 ]. However, these methods commonly come with the problems of being high cost, easily causing secondary pollution in the environment and being unsuitable for industrial production [ 12 , 13 ].…”

Section: Introductionmentioning

confidence: 99%

Green Preparation of Aminated Magnetic PMMA Microspheres via EB Irradiation and Its Highly Efficient Uptake of Ce(III)

et al. 2022

View full text Add to dashboard Cite

The modification of polymers can significantly improve the ability to remove rare earth ions from wastewater, but so far few studies have focused on the irradiation-induced grafting method. In this study, a novel magnetic chelating resin for Ce(III) uptake was first synthesized by suspension polymerization of PMMA@Fe3O4 microspheres followed by irradiation-induced grafting of glycidyl methacrylate (GMA) and subsequent amination with polyethyleneimine (PEI). The FT-IR, SEM, TG and XRD characterization confirmed that we had successfully fabricated magnetic PMMA-PGMA-PEI microspheres with a well-defined structure and good thermal stability. The obtained adsorbent exhibited a satisfactory uptake capacity of 189.81 mg/g for Ce(III) at 318.15 K and an initial pH = 6.0. Additionally, the impact of the absorbed dose and GMA monomer concentration, pH, adsorbent dosage, contact time and initial concentration were thoroughly examined. The pseudo-second order and Langmuir models were able to describe the kinetics and isotherms of the adsorption process well. In addition, the thermodynamic data indicated that the uptake process was spontaneous and endothermic. Altogether, this research enriched the Ce(III) trapping agent and provided a new method for the removal rare earth pollutants.

show abstract

Section: Introductionmentioning

confidence: 99%

Green Preparation of Aminated Magnetic PMMA Microspheres via EB Irradiation and Its Highly Efficient Uptake of Ce(III)

et al. 2022

View full text Add to dashboard Cite

show abstract

“…To solve solubility in different solvents and increase charge transferability to an analyte, the surface of MWCNTs has been functionalized by polar groups, which enhance the adsorption affinity of electron‐donor or acceptor molecules and occur more reliable response [16a–b] . MWCNT‐based electrochemical sensors have remarkable advantages for analytical applications, such as enhanced detection sensitivity, low charge‐transfer resistance (R tc ), electrocatalytic effect, and reduced fouling [16c–d] …”

Section: Introductionmentioning

confidence: 99%

Nanotube‐Boramidic Acid Derivative for Dopamine Sensing

et al. 2021

View full text Add to dashboard Cite

A new sensor, based on boramidic acid-bounded MWCNTs (Multi-walled carbon nanotubes), was synthesized in three simple steps. Modification of the sensor surface was accomplished using boric acid in which the boron atom is adjacent to the NH group. Characterization, electrochemical behaviors, and stability of newly modified nanosensor were completed using SEM (scanning electron microscope), TEM (Transmission electron microscope), CV (cyclic voltammetry), EIS (electron impedance), DTA (Differential thermal analysis), and XPS (X-ray photoelectron spectroscopy). SEM and TEM analysis were confirmed the modified surface of the nanosensor. The stability of the newly synthesized sensor was also designated that the initial weight loss occurred between 50-145°C was corre-sponded to the degradation of both ethylene diamine and boric acid. According to the EIS study, the Nyquist plot of the MWCNTs-NH-B (OH) 2 /GC electrode displayed a 0.435 kΩ Rct with a smaller semicircle than the bare GC (6.57 kΩ). The electrochemical behavior of dopamine was investigated using cyclic and square wave voltammetry (0.1 M phosphate buffer solution-pH 7.4). The diffusion-controlled process was determined when the oxidation of dopamine was studied. The detection limit of dopamine was found to be 5.1 nM. An actual sample study was done using the developed analytical method, and the detection of dopamine in urine was successfully performed. This study is the first example of boramidic acidmodified multi-walled carbon nanotubes

show abstract