Constructing an acidic microenvironment by sulfonated polymers for photocatalytic reduction of hexavalent chromium under neutral conditions

Zhang, Chaofan; Zhuang, Qixin; Wang, Hao; Ying, Xintong; Ji, Ruoyang; Sheng, Daohu; Dong, Wei; Xie, Aming

doi:10.1016/j.jcis.2022.10.055

Cited by 14 publications

(4 citation statements)

References 78 publications

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“…As shown in Fig. S4A, new characteristic bands of −SO 3 H groups assigned to the asymmetric (centered at 1230 cm −1 ; region e) and symmetric (centered at 1175 cm −1 ; region f) stretching vibrations of S=O bonds [15,44,45] emerged after the post-synthetic sulfonation of HCPs. A new band at 590 cm -1 (region g) is also observed and assigned to the stretching vibration of C-S bonds [32].…”

Section: Adsorbents Preparation and Characterizationmentioning

confidence: 96%

The influence of cross-linking density on the efficiency of post-synthetic sulfonation of hyper-cross-linked polymers and their adsorption capacity for antibiotic pollutants

Wolska

Muńko

Siblani

et al. 2023

Journal of Environmental Chemical Engineering

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Section: Adsorbents Preparation and Characterizationmentioning

confidence: 96%

The influence of cross-linking density on the efficiency of post-synthetic sulfonation of hyper-cross-linked polymers and their adsorption capacity for antibiotic pollutants

Wolska

Muńko

Siblani

et al. 2023

Journal of Environmental Chemical Engineering

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“…MOFs have high redox activity, large surface areas, and promising porous structures, making them potential electrode materials for SCs and models for other electrode materials due to their variety of design and composition. [48][49][50][51] MOFs are divided into three classes: pristine MOFs, composites of MOFs, and derivatives of MOFs. The derivative of MOFs electrode material showed good electrochemical performance.…”

Section: Electrode Materials For Esdsmentioning

confidence: 99%

“…These materials are necessary for various applications. [48][49][50][51][52][53] Figure 2 shows that the freestanding MOFs-based electrode materials can be separated into three types. Freestanding primitive MOFs, which have a distinct structure, some mixed metal centers, and some conductive properties, freestanding composites of MOFs which can be combined with secondary materials for the enhancement of electrochemical performance, and freestanding derivatives of MOFs materials can be combined with different materials like carbons, metal hydroxides, oxides, selenides, sulfides, and phosphates, are beneficial for efficient ion transportation after post treatments.…”

Section: Mofs-based Progressive Electrode Materials For Scsmentioning

confidence: 99%

Review—Recent Progress on MOFs-based Electrode Materials for Supercapacitor

Asghar,

Ghaly,

Awaji

et al. 2024

J. Electrochem. Soc.

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Supercapacitors are gaining popularity as energy storage devices (ESDs), and their electrode materials strongly influence their performance. There is no doubt that supercapacitors are capable and reliable ESDs for producing high power even when they operate at low energy levels. Surface modification of the materials can improve the power and energy density of the materials, which is beneficial for enhancing the electrochemical performance of the supercapacitor. During the past few years, more research has been reported to develop new electrode materials for improving the supercapacitors' energy density, charge retention, specific capacitance, stability, and rate performance. This review focuses on the execution of progressive organic-based electrode materials called metal-organic frameworks (MOFs) in the supercapacitor, which offer high electrode stability, capacity, and adjustable pore size, making them promising for electrochemical energy storage applications (supercapacitors) despite challenges. The main purpose of this review is to explain the MOFs-based electrode materials and their progress in the supercapacitor field. Because MOFs allow many attributes like multiple dimensions, additional accept ratio, and higher surface area, MOF fabrication provides stronger bonding between metal and organic linkers than traditional material, making them progressive materials for supercapacitors. Finally, the challenges and perspectives of MOFs-based electrode materials are discussed.

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“…Besides these conventional adsorption methodologies, there is also great interest in investigating the removal of toxic chromium(VI) from solutions via reduction to the less harmful chromium(III) oxidation state. Among the adsorbents used for this purpose, published investigations have used: nanozerovalent iron in a nonaqueous medium [ 25 ], nanozerovalent iron particles immobilized on Mbenes [ 26 ], nanozerovalent iron-rgGO hybrids [ 27 ], nanoscale FeS assembled onto MXenes [ 28 ], Cu 2 ZnSnS 4 (containing Ag or Au) nanocrystals [ 29 ], and sulphonated polymers [ 30 ].…”

Section: Introductionmentioning

confidence: 99%

Transport of Chromium(VI) across a Supported Liquid Membrane Containing Cyanex 921 or Cyanex 923 Dissolved in Solvesso 100 as Carrier Phase: Estimation of Diffusional Parameters

Robla

2023

Membranes

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An investigation of chromium(VI) transport across a supported liquid membrane containing the phosphine oxides Cyanex 921 and Cyanex 923 dissolved in Solvesso 100 as carrier phases was carried out in batch operation mode. Chromium(VI) transport was investigated as a function of different variables: hydrodynamic conditions in the feed (1000–1600 min−1) and stripping (600–1500 min−1) phases, HCl (0.25–2 M) and indium (0.01–0.1 g/L) concentrations in the feed phase, and carrier (0.01 M–0.75 M) concentration in the membrane phase. Indium was recovered in the stripping phase using hydrazine sulphate solutions, and, at the same time, chromium(VI) was reduced to the less harmful Cr(III) oxidation state. Models describing the transport mechanism comprising a diffusion process through the feed aqueous diffusion layer, fast interfacial chemical reaction, and diffusion of the respective chromium(VI)–phosphine oxide complexes across the membrane were developed. The equations describing the rate of transport correlate the membrane permeability coefficient with diffusion and equilibrium parameters, as well as the chemical compositions of the respective metal–carrier phases. The models were used to calculate diffusional parameters for each metal–carrier system, and the minimum thickness of the feed boundary layer was calculated as 1 × 10−3 cm and 6.3 × 10−4 cm for the Cr(VI)-Cyanex 921 and Cr(VI)-Cyanex 923 systems, respectively.

show abstract

Constructing an acidic microenvironment by sulfonated polymers for photocatalytic reduction of hexavalent chromium under neutral conditions

Cited by 14 publications

References 78 publications

The influence of cross-linking density on the efficiency of post-synthetic sulfonation of hyper-cross-linked polymers and their adsorption capacity for antibiotic pollutants

The influence of cross-linking density on the efficiency of post-synthetic sulfonation of hyper-cross-linked polymers and their adsorption capacity for antibiotic pollutants

Review—Recent Progress on MOFs-based Electrode Materials for Supercapacitor

Transport of Chromium(VI) across a Supported Liquid Membrane Containing Cyanex 921 or Cyanex 923 Dissolved in Solvesso 100 as Carrier Phase: Estimation of Diffusional Parameters

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