Porous materials prepared from eco-friendly attapulgite and gallnut stabilized aqueous foam templates for high-efficient removal of organic pollutants

Yu, Hui; Zhu, Yongfeng; Duan, Fuqing; Wang, Aiqin

doi:10.1016/j.mtsust.2023.100315

Cited by 5 publications

(6 citation statements)

References 49 publications

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“…This is because the foam template is free of contamination, using air as the dispersed phase, while water functions as the continuous phase. 11 However, the foam template method for creating porous materials has been studied minimally, due to issues with gas diffusion leading to the evaporation of foam, coarsening, liquid drainage, and other phenomena. 12,13 This has resulted in poor stability of the foam.…”

Section: Introductionmentioning

confidence: 99%

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Porous superabsorbent composites prepared from aqueous foam template and application evaluation

Liu,

Duan,

Zhu

et al. 2024

Soft Matter

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Section: Introductionmentioning

confidence: 99%

“…This is because the foam template is free of contamination, using air as the dispersed phase, while water functions as the continuous phase. 11…”

Section: Introductionmentioning

confidence: 99%

Porous superabsorbent composites prepared from aqueous foam template and application evaluation

Liu,

Duan,

Zhu

et al. 2024

Soft Matter

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“…Owing to its rich mineral resources, easy access, low cost, nontoxic nature, and multiple applications, natural ATP has excellent potential for solving heavy metal pollution in water [18,19]. The ATP clay resources in Linze, Gansu are relatively abundant, with ATP from the Linze mine exhibiting a stratified distribution and a brick-red surface [20]. However, the low-grade ATP from the original mine contains many impurities and has a rough surface and a low specific surface area, resulting in substantially weakened physicochemical properties, hampering its large-scale exploitation.…”

Section: Introductionmentioning

confidence: 99%

Attapulgite-Supported Nanoscale Zero-Valent Iron Composite Materials for the Enhanced Removal of Ni2+ from Aqueous Solutions: Characterization, Kinetics, and Mechanism

Ma,

Meng,

Ren

et al. 2024

Applied Sciences

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This study focuses on addressing the pollution caused by Ni in water. To enhance the removal efficiency of Ni2+, attapulgite (ATP) from Linze County, Gansu Province, China, was used as a carrier to prepare attapulgite loaded with nanoscale zero-valent iron (nZVI@ATP) via a liquid-phase reduction. This approach aims to mitigate the aggregation and oxidation tendencies of nZVI, thereby improving its performance in Ni2+ removal. The results revealed that nZVI@ATP exhibited a mesoporous structure with a specific surface area and an average pore size of 51.79 m2/g and 9.22 nm. Notably, nZVI@ATP showed a remarkably reduced agglomeration phenomenon. In addition, nZVI@ATP demonstrated a considerably more excellent adsorption performance for Ni2+ than raw ATP and pure nZVI, as its highest adsorption capacity was 143.20 mg/g when the iron–ATP ratio was 2:1 (initial concentration: 200 mg/L, initial pH: 5, temperature: 298 K, and dosing amount: 1 g/L). The adsorption of Ni2+ by nZVI@ATP followed the quasi-secondary kinetic model, and the removal rate of Ni2+ was inversely proportional to the initial concentration and directly proportional to the dosage. The adsorption capacity tended to increase and then decrease as the pH increased. The removal mechanism of Ni2+ by nZVI@ATP involved adsorption, reduction, and precipitation, with the significant mechanism being the induced Ni(OH)2 precipitation on the nZVI@ATP surface.

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“…12 Nanoattapulgite (nano-ATP) is a magnesium−aluminum silicate clay with a nanoscale rod-like crystal structure. 13 The T h i s c o n t e n t i s fundamental structural component is the stacked chain structure with nanopores and surface-active groups. 14 Owing to its high porosity and large specific surface area, graptolite has excellent adsorption capacity.…”

Section: ■ Introductionmentioning

confidence: 99%

“…Nanoattapulgite (nano-ATP) is a magnesium–aluminum silicate clay with a nanoscale rod-like crystal structure . The fundamental structural component is the stacked chain structure with nanopores and surface-active groups .…”

Section: Introductionmentioning

confidence: 99%

Biomimetic Hydroxyapatite on 3D-Printed Nanoattapulgite/Polycaprolactone Scaffolds for Bone Regeneration of Rat Cranium Defects

Dai,

Wu,

Liu

et al. 2023

ACS Biomater. Sci. Eng.

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Nanoattapulgite (nano-ATP), a magnesium−aluminum silicate clay, can absorb substances and is a suitable material for bone repair and regeneration. In this study, using threedimensional printing technology, a nano-ATP/polycaprolactone (PCL) scaffold was fabricated and modified using NaOH to form a rough surface. Biomimetic hydroxyapatite (HA) on nano-ATP/ PCL scaffolds was fabricated using a biomineralized approach. The scaffold provided structural support through PCL and was modified with ATP and HA to improve hydrophilicity and promote the delivery of nutrients. The biocompatibility and osteogenic induction of scaffolds were assessed in vitro using mouse bone marrow mesenchymal stem cells. According to the in vitro study results, the nano-ATP/PCL/HA composite scaffold significantly boosted the expression levels of genes related to osteogenesis (p < 0.05), attributed to its superior alkaline phosphatase activity and calcium deposition capabilities. The outcomes of in vivo experimentation demonstrated an augmentation in bone growth at the rat cranial defect site when treated with the ATP/ PCL/HA composite scaffold. It can be inferred from the results that the implementation of ATP and HA for the bone tissue engineering repair material displays encouraging prospects.

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Porous materials prepared from eco-friendly attapulgite and gallnut stabilized aqueous foam templates for high-efficient removal of organic pollutants

Cited by 5 publications

References 49 publications

Porous superabsorbent composites prepared from aqueous foam template and application evaluation

Porous superabsorbent composites prepared from aqueous foam template and application evaluation

Attapulgite-Supported Nanoscale Zero-Valent Iron Composite Materials for the Enhanced Removal of Ni2+ from Aqueous Solutions: Characterization, Kinetics, and Mechanism

Biomimetic Hydroxyapatite on 3D-Printed Nanoattapulgite/Polycaprolactone Scaffolds for Bone Regeneration of Rat Cranium Defects

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