Selective recovery of protonated dyes from dye wastewater by pH-responsive BCN material

Wang, Peifang; Wang, Pingfan; Guo, Yong; Rao, Lei; Yan, Congcong

doi:10.1016/j.cej.2021.128532

Cited by 50 publications

(10 citation statements)

References 46 publications

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“…Few spherical grains are observed in BCNO platelets, revealing the h-BCN phase. 54 The TEM image along with corresponding area elemental mapping (Figure S3) displayed the thorough distribution of B, C, N, and O, revealing the uniform distribution of different phases in BCNO. Figures S4 and S5 present the N 2 adsorption−desorption isotherms and pore size distribution in nanostructured BCNO and CCT aerogel.…”

Section: ■ Results and Discussionmentioning

confidence: 99%

Fibrous Aerogel-Templated Nanostructured Boron Carbon Oxynitride Networks for Preferential Adsorptive Separation of Cationic Dyes

Joshi

Sharma

Srivastava

et al. 2022

ACS Appl. Nano Mater.

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Organic dyes in wastewater jeopardize aquatic ecosystems and biodiversity, besides having several concerns of health hazards. Nanostructured materials of controlled textural features with active surface functionalities are gaining immense interest as effective adsorbents for wastewater treatment. The present work addresses a facile approach to synthesize fibrous aerogel-templated nanostructured boron carbon oxynitride (BCNO). The surface functionalities, structural heterogeneity, crystalline phases, and morphological features of BCNO are probed by Fourier transform infrared spectroscopy, X-ray photoelectron spectroscopy, Raman, X-ray diffraction, and high-resolution transmission electron microscopy analyses. The nanostructured BCNO showed preferential and remarkably high adsorption of cationic dyes with a removal capacity of 1258 mg g −1 for malachite green (MG) dye. The adsorption of MG dye by nanostructured BCNO is carried out at different pH, ionic strength, and temperature to emphasize the influence of environmental factors. The spectroscopic analyses suggested multiple adsorption pathways, viz. electrostatic, π−π, hydrogen, and Lewis acid−base interactions for unprecedentedly higher adsorption of cationic dyes by BCNO. Batch-mode findings promise the potential of nanostructured BCNO for wastewater treatment applications.

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Section: ■ Results and Discussionmentioning

confidence: 99%

Fibrous Aerogel-Templated Nanostructured Boron Carbon Oxynitride Networks for Preferential Adsorptive Separation of Cationic Dyes

Joshi

Sharma

Srivastava

et al. 2022

ACS Appl. Nano Mater.

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“…The color of the BCN solution obtained by acid washing was substantially darker than the color of the BCN solution obtained by water washing. Water washing resulted in the release of 105.21 mg/g of MB dye, whereas acid desorption resulted in the release of 631.54 mg/g of MB dye from the BCN material [78].…”

Section: Bcn Based Adsorbentsmentioning

confidence: 99%

Boron carbon nitride nanosheets in water and wastewater treatment: A critical review

et al. 2022

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“…A large amount of acidic wastewater comes from metallurgy [1], printing and dyeing [2], chemical production [3], mining of mineral resources [4], etc. In China, the pickling process of stainless steel in metallurgy alone produces at least 650,000 tons of acidic waste liquid every year [5].…”

Section: Introductionmentioning

confidence: 99%

Negatively Charged MOF-Based Composite Anion Exchange Membrane with High Cation Selectivity and Permeability

Afsar

Chen

et al. 2022

Membranes

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Every metal and metallurgical industry is associated with the generation of wastewater, influencing the living and non-living environment, which is alarming to environmentalists. The strict regulations about the dismissal of acid and metal into the environment and the increasing emphasis on the recycling/reuse of these effluents after proper remedy have focused the research community’s curiosity in developing distinctive approaches for the recovery of acid and metals from industrial wastewaters. This study reports the synthesis of UiO-66-(COOH)2 using dual ligand in water as a green solvent. Then, the prepared MOF nanoparticles were introduced into the DMAM quaternized QPPO matrix through a straightforward blending approach. Four defect-free UiO-66-(COOH)2/QPPO MMMs were prepared with four different MOF structures. The BET characterization of UiO-66-(COOH)2 nanoparticles with a highly crystalline structure and sub-nanometer pore size (~7 Å) was confirmed by XRD. Because of the introduction of MOF nanoparticles with an electrostatic interaction and pore size screening effect, a separation coefficient (SHCl/FeCl2) of 565 and UHCl of 0.0089 m·h−1 for U-C(60)/QPPO were perceived when the loading dosage of the MOF content was 10 wt%. The obtained results showed that the prepared defect-free MOF membrane has broad prospects in acid recovery applications.

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Selective recovery of protonated dyes from dye wastewater by pH-responsive BCN material

Cited by 50 publications

References 46 publications

Fibrous Aerogel-Templated Nanostructured Boron Carbon Oxynitride Networks for Preferential Adsorptive Separation of Cationic Dyes

Fibrous Aerogel-Templated Nanostructured Boron Carbon Oxynitride Networks for Preferential Adsorptive Separation of Cationic Dyes

Boron carbon nitride nanosheets in water and wastewater treatment: A critical review

Negatively Charged MOF-Based Composite Anion Exchange Membrane with High Cation Selectivity and Permeability

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