Enhanced preconcentration of selected chlorofluorocarbons on multiwalled carbon nanotubes with polar functionalities

Saridara, Chutarat; Hussain, Chaudhery Mustansar; Ragunath, S.; Mitra, Somenath

doi:10.1002/jssc.201400741

Cited by 3 publications

(2 citation statements)

References 38 publications

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“…Furthermore, the combination between the CNTs and the Js was studied through the FTIR spectrometer. As shown in Figure S4, the CNTs demonstrated a distinct absorption peak at 1710 cm –1 , which was assigned to the CO stretching vibration of carboxylic acid, and the Js showed an absorption peak at 1633 cm –1 , which belonged to the O–H bending vibration of absorbed H 2 O. As for the FTIR spectrum of the C-Js, there was a new absorption peak around 1658 cm –1 .…”

Section: Resultsmentioning

confidence: 92%

JUJUNCAO-Stem-Based Interfacial Solar-Driven Evaporator with Natural Two-Phase Composite Structures of Functional Partition and Inherent Ultralow Vaporization Enthalpy of Water for Stable and Efficient Steam Production

Tan,

Wu,

Xia

et al. 2024

ACS Appl. Mater. Interfaces

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The interfacial solar-driven evaporation has been deemed as an environmentally friendly approach for freshwater generation. Nevertheless, there is still a challenge to obtain solar evaporators with efficient vapor production from low-cost and renewable biomass through a simple preparation process. Herein, the JUJUNCAO stem was selected as the substrate material, and a kind of interfacial solar-driven evaporator with natural two-phase composite structures and inherent ultralow water vaporization enthalpy was constructed by a dip-coating process. The natural two-phase composite structures were utilized as independent functional partition: the low-tortuosity and hydrophilic vascular bundles served as hierarchical channels for rapid water transportation and continuous steam escape, and the honeycomb-like parenchyma cells were considered natural heat insulators for effective thermal management. Furthermore, the JUJUNCAO stem exhibited inherent ultralow water vaporization enthalpy which was only 1.15 kJ g–1. Benefiting from the natural two-phase composite structures of functional partition and inherent ultralow water vaporization enthalpy, the C-Js evaporator could achieve an evaporation rate of 2.77 kg m–2 h–1 with an efficiency of 85.6% under 1 sun illumination. Meanwhile, the C-Js exhibited a stable and ideal evaporation performance and metal ion rejection behavior in the actual brine desalination process. Owing to the cost-effective and simple pretreatment process, the C-Js evaporator has the potential for freshwater generation in undeveloped areas.

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Section: Resultsmentioning

confidence: 92%

JUJUNCAO-Stem-Based Interfacial Solar-Driven Evaporator with Natural Two-Phase Composite Structures of Functional Partition and Inherent Ultralow Vaporization Enthalpy of Water for Stable and Efficient Steam Production

Tan,

Wu,

Xia

et al. 2024

ACS Appl. Mater. Interfaces

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“…We introduce for the first time multiwalled carbon nanotubes (MWCNT) as a new resin material for EMLC and apply them at a preparative scale. MWCNT have been utilized as the chromatography stationary phase for various applications in the last few years , though not in EMLC. Data on the high adsorption capacity of MWCNT for uraemic toxins , ultrahigh specific adsorption of CNTs for salt , and their capacity for dye removal from aqueous solutions have been published.…”

Section: Introductionmentioning

confidence: 99%

Carbon nanotubes-A resin for electrochemically modulated liquid chromatography

2017

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Electrochemically modulated liquid chromatography is a special form of ion exchange chromatography in which the separation process is controlled by applying an electric potential to the stationary phase. This form of chromatography has so far only been applied in research studies. The present study shows that multiwalled carbon nanotubes are an effective resin material for an electrochemically modulated chromatography process. The experiments are carried out in a newly designed column that enables the packing of nanomaterials. We investigate the influence of the applied potential on the retention and elution of maleic acid, determine the dynamic binding capacity, and calculate the utilization degree of the electrical charge in the adsorption process. Moreover, the stability of the resin and the membrane over more than 200 working hours are presented. In addition to the stability, their sturdiness and inexpensive price are important qualities that make multiwalled carbon nanotubes interesting for application as the stationary phase in an electrochemically driven process. The investigated chromatography technique represents a promising separation process for future applications as a preparative step in biotechnology as well as other life science fields.

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Analytical sample preparation, preconcentration and chromatographic separation on carbon nanotubes

Intrchom

Mitra

2017

Current Opinion in Chemical Engineering

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Enhanced preconcentration of selected chlorofluorocarbons on multiwalled carbon nanotubes with polar functionalities

Cited by 3 publications

References 38 publications

JUJUNCAO-Stem-Based Interfacial Solar-Driven Evaporator with Natural Two-Phase Composite Structures of Functional Partition and Inherent Ultralow Vaporization Enthalpy of Water for Stable and Efficient Steam Production

JUJUNCAO-Stem-Based Interfacial Solar-Driven Evaporator with Natural Two-Phase Composite Structures of Functional Partition and Inherent Ultralow Vaporization Enthalpy of Water for Stable and Efficient Steam Production

Carbon nanotubes-A resin for electrochemically modulated liquid chromatography

Analytical sample preparation, preconcentration and chromatographic separation on carbon nanotubes

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