Polythiocyanuric acid-functionalized MoS2 nanosheet-based high flux membranes for removal of toxic heavy metal ions and congo red

Sreeramareddygari, Muralikrishna; Shivanna, Jyothi Mannekote; Somasundrum, Mithran; Soontarapa, Khantong; Surareungchai, Werasak

doi:10.1016/j.cej.2021.130592

Cited by 31 publications

(12 citation statements)

References 56 publications

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“…After that, the permeate uranium concentration increases due to the blockage of active sites. The electrostatic repulsion plays an important role in the uranium removal after 300 min as only the size exclusion principle does not hold well for the separation. − , …”

Section: Resultsmentioning

confidence: 99%

“…47−50 The highresolution S 2p XPS spectrum (Figure 1b) shows a peak at 162 eV corresponding to the thiol moiety (−C−S−) present in the specimen. 28,51 Moreover, as shown in the high-resolution C 1s spectrum (Figure S2b), the peak at 285 eV is attributed to sp 2 -C of the triazine ring and the peak at 283.1 eV can be assigned to graphitic impurity from the carbon tape used for XPS investigation. 14,42 The peak at 131.4 eV in the high-resolution P 2p spectrum (Figure S2c) is attributed to the �P�N� functional group present in the framework.…”

Section: Characterizations Of Cthm-2mentioning

confidence: 93%

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Removal of Uranium from Aqueous Solution and Simulated Seawater Using a Mixed Matrix Membrane Fabricated by Cyclophosphazene and Triazine-Based Inorganic–Organic Hybrid Material

Das

Rawat

Singh

et al. 2023

ACS Appl. Eng. Mater.

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The efficient removal of uranium ions from aqueous and simulated seawater is reported by using a mixed matrix membrane (MMM-2) fabricated by cyclophosphazene and triazine-based inorganic−organic hybrid material (CTHM-2) as the adsorbent. CTHM-2 with a specific surface area of 76 m 2 g −1 was synthesized within 60 min by microwave-assisted polycondensation reaction. In batch mode adsorption, the concentration of uranium has been decreased from 5 ppm to <15 ppb (permissible limit of uranium by the World Health Organization) within 120 min at pH of 6 and 298 K. However, a maximum adsorption capacity of 580 mg g −1 is estimated with 500 ppm of the initial concentration. The isotherm and kinetic studies indicate that it could fit well with the Freundlich isotherm and pseudo-second order kinetics. The negative ΔG and ΔH values indicate the spontaneous and exothermic adsorption processes, respectively. When the MMM-2 was used to treat 5 L of 5 ppm U(VI) solution, with a water flux of 8.1 L m −2 h −1 and 2 bar transmembrane pressure, it provides safe drinkable water (<15 ppb) for 300 min. Additionally, the CTHM-2 and MMM-2 could be further used to remove uranium ions from the simulated seawater with adsorption capacities of 53 and 167 mg g −1 , respectively.

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Section: Resultsmentioning

confidence: 99%

Section: Characterizations Of Cthm-2mentioning

confidence: 93%

Removal of Uranium from Aqueous Solution and Simulated Seawater Using a Mixed Matrix Membrane Fabricated by Cyclophosphazene and Triazine-Based Inorganic–Organic Hybrid Material

Das

Rawat

Singh

et al. 2023

ACS Appl. Eng. Mater.

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“…The 2D sheets of TMDCs are made up of single layer bonded together by Van der Waals interactions with ultrathin structure (~0.6 to 0.7 nm), and high surface area to mass ratio, which make it an attracting for desalination technology compared to GO. [44,[76][77][78][79][80][81] Up to date, only MoS 2 and WS 2 based TMDCs have been investigated for desalination application. In this section, we will discuss the MoS 2 and WS 2 based lamellar membranes for water purification and desalination of sea and brackish water in detail.…”

Section: Water Desalination and Purification Applicationsmentioning

confidence: 99%

Recent Development in Laminar Transition Metal Dichalcogenides‐Based Membranes Towards Water Desalination: A Review

Rehman

Memon

Ullah

et al. 2022

The Chemical Record

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Transition metal dichalcogenides (TMDCs)‐based laminar membranes have gained significant interest in energy storage, fuel cell, gas separation, wastewater treatment, and desalination applications due to single layer structure, good functionality, high mechanical strength, and chemical resistivity. Herein, we review the recent efforts and development on TMDCs‐based laminar membranes, and focus is given on their fabrication strategies. Further, TMDCs‐based laminar membranes for water purification and seawater desalination are discussed in detail. Finally, present their merits, limits and future challenges needed in this area.

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“…[8] Due to their high toxicity, lead, arsenic, cadmium, chromium, and mercury are among the heavy metals that pose a danger to public health. [9,10] Even low exposure to these metals is known to cause multiple organ damage. [11] Among these heavy metals, lead is a highly toxic element that especially affects the central nervous system and then the brain.…”

Section: Introductionmentioning

confidence: 99%

A functional electrochemical sensing platform for the detection of lead ions

Khaleel

Soylu

2023

Preprint

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A novel electrochemical sensor for the detection of lead ions was constructed by using electrodeposition of gold nanoparticles (GNPs) and glutathione (GSH) onto reduced graphene oxide (rGO) to form a GSH@GNP@rGO nanocomposite on a glassy carbon electrode (GSH@GNP@rGO@GCE). The sensing properties of the obtained sensor were tested by Cyclic Voltammetry (CV) and Differential Pulse Voltammetry (DPV). Under optimized experimental conditions, the voltammetry response gradually raises by increasing the concentration (2-20 μΜ). The result showed that the GSH@GNP@rGO@GCE sensor exhibited high sensitivity towards Pb(II) with a low detection limit of 0.43 μMby DPV. Our studies suggest that the GSH@GNP@rGO nanocomposite could potentially be used for detecting Pb(II).

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Polythiocyanuric acid-functionalized MoS2 nanosheet-based high flux membranes for removal of toxic heavy metal ions and congo red

Cited by 31 publications

References 56 publications

Removal of Uranium from Aqueous Solution and Simulated Seawater Using a Mixed Matrix Membrane Fabricated by Cyclophosphazene and Triazine-Based Inorganic–Organic Hybrid Material

Removal of Uranium from Aqueous Solution and Simulated Seawater Using a Mixed Matrix Membrane Fabricated by Cyclophosphazene and Triazine-Based Inorganic–Organic Hybrid Material

Recent Development in Laminar Transition Metal Dichalcogenides‐Based Membranes Towards Water Desalination: A Review

A functional electrochemical sensing platform for the detection of lead ions

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