Synergistic effects of iron ion and PANI in biochar material for the efficient removal of Cr(VI)

Gao, Junting; Wu, Zhiwei; Chen, Likun; Xu, Zhaoyu; Gao, Wenbo; Jia, Guosheng; Yao, Yingming

doi:10.1016/j.matlet.2018.12.116

Cited by 20 publications

(4 citation statements)

References 10 publications

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“…For PANI-OH-3-B, the XPS C 1s spectrum ( Figure 2 c) was curve-fitted to four peaks with binding energies of 284.25 eV, 284.8 eV, 285.45 eV, and 286.4 eV, which were attributed to C-H, C-C, C-N, and C-O [ 24 , 25 , 26 ], respectively; moreover, the C 1s regions of PANI-OH-3 and PANI-OH-3-B were without obvious changes. Concerning the O 1s regions of PANI-OH-3 and PANI-OH-3-B, for PANI-OH-3, the dominant peak is located at 532.8 eV, which was attributed to the C-O that originated from C-OH ( Figure 2 d), while the two peaks with binding energies of 532.5 eV and 533.1 eV were assigned to C-O and B-O [ 27 , 28 ] as a result of the presence of C-OH and C-O-B ( Figure 2 e). The binding energies between 399.29 eV and 399.7 eV consisted of the N1s peak ( Figure 2 f), which was ascribed to -N = and -NH- [ 24 , 26 ], respectively.…”

Section: Resultsmentioning

confidence: 99%

Preparation and Boron Removal Performance of Glycidol Modified PANI Nanorods: An Optimization Study Based on Response Surface Methodology

Guan

et al. 2023

Polymers

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Boron removal from aqueous solutions has attracted increasing attention, offering benefits for animal and plant health as well as profound significance for exploiting Salt Lake boron resources. In this work, we synthesized novel glycidol-functionalized and hydrophilic polyaniline (PANI) nanorod adsorbents, which were prepared to separate boron compounds from boric acid aqueous solutions. The as-prepared adsorbents were significantly different from the traditional polymers’ grafting reaction because they had a higher functional yield and more active position for adsorption. The maximum adsorption capacity (0.2210 mmoL∙g−1) and optimal adsorption conditions (boric acid concentration of 1307 mg/L, pH = 9.82, time of 10 h) were obtained with single-factor experimentation and the response surface method (RSM). In addition, adsorption kinetics studies showed that the adsorption reaction belonged to the pseudo-first-order kinetic model, and diffusion was the key limiting factor; therefore, the adsorption equilibrium time is more than 10 h. Finally, the related possible adsorption mechanism was investigated based on the species and the diffusion of boron in the aqueous phase.

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Section: Resultsmentioning

confidence: 99%

Preparation and Boron Removal Performance of Glycidol Modified PANI Nanorods: An Optimization Study Based on Response Surface Methodology

Guan

et al. 2023

Polymers

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“…The results showed that, compared to the biochar without modification, CFCP had faster adsorption rate probably due to the increased N-containing heterocycles. Gao et al [ 129 ] prepared biochar from grapefruit endothelium and modified it by iron ion and polyaniline through biosorption-pyrolysis method. This novel biochar displayed superior removal capacity towards Cr 6+ (up to 100% within 135 min at initial Cr 6+ concentration of 50 μM, 30 mL) mainly due to the synergistic effect of polyaniline and iron ion.…”

Section: Functional Materials Derived From Biomass Wastesmentioning

confidence: 99%

Recent progress in the conversion of biomass wastes into functional materials for value-added applications

Zhou

Wang

2020

Science and Technology of Advanced Materials

123

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The amount of biomass wastes is rapidly increasing, which leads to numerous disposal problems and governance issues. Thus, the recycling and reuse of biomass wastes into value-added applications have attracted more and more attention. This paper reviews the research on biomass waste utilization and biomass wastes derived functional materials in last five years. The recent research interests mainly focus on the following three aspects: (1) extraction of natural polymers from biomass wastes, (2) reuse of biomass wastes, and (3) preparation of carbon-based materials as novel adsorbents, catalyst carriers, electrode materials, and functional composites. Various biomass wastes have been collected from agricultural and forestry wastes, animal wastes, industrial wastes and municipal solid wastes as raw materials with low cost; however, future studies are required to evaluate the quality and safety of biomass wastes derived products and develop highly feasible and cost-effective methods for the conversion of biomass wastes to enable the industrial scale production.

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“…The valorization of natural wastes represents a challenging task within the circular economy approach. 1 In recent years, numerous studies have explored novel protocols for the conversion of organic waste feedstocks to functional materials suitable for remediation, 2–4 catalysis, 5,6 energy storage, 7,8 packaging 9,10 and biomedicine. 11,12 The literature reports that the combination of natural nanoparticles with polymers derived from biomass wastes drive the fabrication of biocomposite materials with thermomechanical properties comparable to petroleum-based plastics.…”

Section: Introductionmentioning

confidence: 99%

Composite materials based on halloysite clay nanotubes and cellulose from Posidonia oceanica sea balls: from films to geopolymers

Calvino,

Cavallaro,

Milioto

et al. 2024

Environ. Sci.: Nano

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Synergistic effects of iron ion and PANI in biochar material for the efficient removal of Cr(VI)

Cited by 20 publications

References 10 publications

Preparation and Boron Removal Performance of Glycidol Modified PANI Nanorods: An Optimization Study Based on Response Surface Methodology

Preparation and Boron Removal Performance of Glycidol Modified PANI Nanorods: An Optimization Study Based on Response Surface Methodology

Recent progress in the conversion of biomass wastes into functional materials for value-added applications

Composite materials based on halloysite clay nanotubes and cellulose from Posidonia oceanica sea balls: from films to geopolymers

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