Facile synthesis of Tri-metallic layered double hydroxides (NiZnAl-LDHs): Adsorption of Rhodamine-B and methyl orange from water

Nazir, Mamona; Najam, Tayyaba; Jabeen, Shazia; Wattoo, Muhammad Ahmad; Bashir, Muhammad Sohail; Shah, Syed Shoaib Ahmad; Rehman, Aziz ur

doi:10.1016/j.inoche.2022.110008

Cited by 101 publications

(40 citation statements)

References 56 publications

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“…The difference in the adsorption capacity was related to its specific surface area. The larger the specific surface area of carbon material, the richer the pore structure, and the higher the adsorption capacity of Cu 2+ [ 23 , 24 ]. To sum up, the adsorption performance of AC-12@CD was the best, which was subsequently measured as an example.…”

Section: Resultsmentioning

confidence: 99%

“…It confirmed that the theoretical model agrees better with the experimental data; the Langmuir model could be better described in the adsorption process than the Freundlich model. The adsorption characteristics of Cu 2+ on AC-12 and AC-12@CD were of unimolecular adsorption with uniform distribution of active groups on the adsorbent surface [ 24 , 29 ]. The functional groups such as –NH x , –OH, and –COOH in the adsorbent could remove metal pollution through electronic interaction with charged metal ions in the solution [ 30 , 31 ].…”

Section: Resultsmentioning

confidence: 99%

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Preparation of Ganoderma Lucidum Bran-Based Biological Activated Carbon for Dual-Functional Adsorption and Detection of Copper Ions

Wang

Lan

et al. 2023

Materials

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In this paper, Ganoderma lucidum bran was explored as the precursor to fabricate biomass activated carbon. When potassium hydroxide was selected as an activator (1:6, mass ratio of AC-12 to potassium hydroxide), and the activation condition was 700 °C at 5 h, the highest specific surface area reached 3147 m2 g−1. Carbon dots were prepared with citric acid monohydrate and thiourea as precursors and then loaded onto the surface of activated carbon by a simple and green method. Activated carbon for dual-functional had a high adsorption capacity. Additionally, based on its unique optical properties, the fluorescence response for detecting copper ion was established. The fluorescence intensity of the materials decreased linearly with the increase of copper ion concentration, in the range of 10–50 nmol L−1. The research opened up a new way for applying biomass activated carbon in the field of adsorption and detection. Highlights: (1) Carbon dots were loaded on the surface of activated carbon; (2) the simultaneous adsorption and detection were realized; (3) it provides a way for the preparation of dual-functional materials.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Preparation of Ganoderma Lucidum Bran-Based Biological Activated Carbon for Dual-Functional Adsorption and Detection of Copper Ions

Wang

Lan

et al. 2023

Materials

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“…Rhodamine B (RhB) is a typical dye organic compound which is primarily used for industrial dyeing. RhB possesses carcinogenicity and teratogenicity, causing certain harm to human health and the sustainable development of ecosystems when it is discharged into water bodies [ 1 , 2 ]. The methods of removing RhB include physical adsorption, chemical precipitation, biological filtration, etc.…”

Section: Introductionmentioning

confidence: 99%

Effect of Ag Modification on the Structure and Photocatalytic Performance of TiO2/Muscovite Composites

et al. 2023

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Ag/TiO2/muscovite (ATM) composites were prepared by the sol–gel method and the effects of Ag modification on the structure and photocatalytic performance were investigated. The photocatalysts were characterized using X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), Brunauer–Emmett–Teller surface area (BET), X-ray photoelectron spectroscopy (XPS), Fourier transform infrared spectra (FTIR), photoluminescence spectra (PL) and ultraviolet–visible diffuse reflectance spectra (DRS). The photocatalytic activity of the obtained composites was evaluated by taking 100 mL (10 mg/L) of Rhodamine B (RhB) aqueous solution as the target pollutant. The muscovite (Mus) loading releases the agglomeration of TiO2 particles and the specific surface area increases from 17.6 m2/g (pure TiO2) to 39.5 m2/g (TiO2/Mus). The first-order reaction rate constant increases from 0.0009 min−1 (pure TiO2) to 0.0074 min−1 (150%TiO2/Mus). Ag element exists in elemental silver. The specific surface area of 1-ATM further increases to 66.5 m2/g. Ag modification promotes the separation of photogenerated electrons and holes and increases the visible light absorption. 1%Ag-TiO2/Mus (1-ATM) exhibits the highest photocatalytic activity. After 100 min, the rhodamine B (RhB) degradation degrees of PT, 150%TiO2/Mus and 1-ATM are 10.4%, 48.6% and 90.6%, respectively. The first-order reaction rate constant of 1-ATM reaches 0.0225 min−1, which is 25 times higher than that of pure TiO2.

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“…At present, numerous adsorbents have been widely studied for the removal of various dyes due to their excellent performance as advanced materials, such as metal oxides (including NiO [ 22 ], ZnO [ 23 ], Fe 3 O 4 [ 24 ], TiO 2 [ 25 ]), NiZnAl layered double hydroxides [ 26 ], montmorillonite [ 27 ], chitosan [ 28 ] and hydrogel [ 29 ]. Among all the adsorbent materials, ceria (CeO 2 ) is a significant and promising candidate because of its good environmental compatibility and thermal stability [ 30 , 31 ].…”

Section: Introductionmentioning

confidence: 99%

Effective and Efficient Porous CeO2 Adsorbent for Acid Orange 7 Adsorption

Gao

Yang

et al. 2023

Materials

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A porous CeO2 was synthesized following the addition of guanidine carbonate to a Ce3+ aqueous solution, the subsequent addition of hydrogen peroxide and a final hydrothermal treatment. The optimal experimental parameters for the synthesis of porous CeO2, including the amounts of guanidine carbonate and hydrogen peroxide and the hydrothermal conditions, were determined by taking the adsorption efficiency of acid orange 7 (AO7) dye as the evaluation. A template−free hydrothermal strategy could avoid the use of soft or hard templates and the subsequent tedious procedures of eliminating templates, which aligned with the goals of energy conservation and emission reduction. Moreover, both the guanidine carbonate and hydrogen peroxide used in this work were accessible and eco−friendly raw materials. The porous CeO2 possessed rapid adsorption capacities for AO7 dye. When the initial concentration of AO7 was less than 130 mg/L, removal efficiencies greater than 90.0% were obtained, achieving a maximum value of 97.5% at [AO7] = 100 mg/L and [CeO2] = 2.0 g/L in the first 10 min of contact. Moreover, the adsorption–desorption equilibrium between the porous CeO2 adsorbent and the AO7 molecule was basically established within the first 30 min. The saturated adsorption amount of AO7 dye was 90.3 mg/g based on a Langmuir linear fitting of the experimental data. Moreover, the porous CeO2 could be recycled using a NaOH aqueous solution, and the adsorption efficiency of AO7 dye still remained above 92.5% after five cycles. This study provided an alternative porous adsorbent for the purification of dye wastewater, and a template−free hydrothermal strategy was developed to enable the design of CeO2−based catalysts or catalyst carriers.

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Facile synthesis of Tri-metallic layered double hydroxides (NiZnAl-LDHs): Adsorption of Rhodamine-B and methyl orange from water

Cited by 101 publications

References 56 publications

Preparation of Ganoderma Lucidum Bran-Based Biological Activated Carbon for Dual-Functional Adsorption and Detection of Copper Ions

Preparation of Ganoderma Lucidum Bran-Based Biological Activated Carbon for Dual-Functional Adsorption and Detection of Copper Ions

Effect of Ag Modification on the Structure and Photocatalytic Performance of TiO2/Muscovite Composites

Effective and Efficient Porous CeO2 Adsorbent for Acid Orange 7 Adsorption

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