Stable silver nanoparticle doped mesoporous biochar-based nanocomposite for efficient removal of toxic dyes

Shaikh, Wasim Akram; Islam, Rafique Ul; Chakraborty, Sukalyan

doi:10.1016/j.jece.2020.104982

Cited by 57 publications

(14 citation statements)

References 44 publications

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“…The survey region (Figure 3a) exhibits sharp Ag3d doublet is noted with Ag3d 5/2 and Ag3d 3/2 peaks centred at 368.2 and 374.2 eV, respectively (Figure 3b). These binding energy values [19] and 6 eV splitting [20] are consistent with silver in the metallic state. C1s narrow region from the biochar is displayed in Figure 3c; it is peak fitted with four components assigned to sp² carbon atoms (284.6 eV), sp 3 carbon atoms (285.3 eV), C-O (286.8 eV) and O-C=O (288.6 eV) carbon atom types [21].…”

Section: Physicochemical Properties Of Biochar and Biochar@agsupporting

confidence: 72%

“…%); O/C ratio is about 0.16 , lower than 0.20 obtained for Shorea robusta leaves, carbonized at 300 °C [20]. A lower pyrolysis temperature induces less degradation of the cellulosic initial material and thus leads to higher O/C ratio as is the case in the case of S. robusta [20]. One interesting point is that the actual surface silver content is high, and parallels the sharp Ag3d doublet noticed in Figure 3a.…”

Section: Physicochemical Properties Of Biochar and Biochar@agmentioning

confidence: 70%

“…Figure 3d depicts the surface elemental composition (in at. %); O/C ratio is about 0.16 , lower than 0.20 obtained for Shorea robusta leaves, carbonized at 300 °C [20]. A lower pyrolysis temperature induces less degradation of the cellulosic initial material and thus leads to higher O/C ratio as is the case in the case of S. robusta [20].…”

Section: Physicochemical Properties Of Biochar and Biochar@agmentioning

confidence: 73%

“…This indicates that direct pyrolysis of silver nitrate-impregnated biomass is an effective way to obtain high silver nanoparticle loading on biochar, compared to the impregnation of biochar with pre-fabricated silver nanoparticles. Indeed, the survey region reported by Shaikh et al [20] exhibits a very low relative intensity of the Ag3d doublet. SEM/EDX can further give credit to the XPS analysis and could explain the sharp Ag3d peak.…”

Section: Physicochemical Properties Of Biochar and Biochar@agmentioning

confidence: 90%

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Strong anti-kinetoplastid activity of silver nanoparticle-coated biochar

Snoussi

Sifaoui

Khalil

et al. 2022

Preprint

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Neglected tropical diseases including Chagas disease, also known as American trypanosomiasis and leishmaniasis remains a serious health problem in several endemic. To address this medical problem, much has been done in the past 15 years to design nanomaterials with effective anti-kinetoplastids activity, particularly those nanomaterials based on gold and silver nanoparticles. Herein, we describe a simple method to prepare silver-loaded biochar by pyrolysis of silver nitrate-impregnated agrowaste powder (from olive stones). The resulting Biochar@Ag was prepared at 400 °C for 15 minutes only and the yield was found to be 36.5 %. The supported metallic Ag nanoparticles have triangular shape in the nanoscale regime (< 100 nm) and a loading of 7.85 mmol per gram of Biochar@Ag. The Biochar@Ag showed promising antiparasitic activity against promastigotes stage of L. donovani, L. amazonensis and epimastigotes of T. cruzi with and IC50 of 9.942 ± 0.900 ppm; 14.555 ± 1.035 ppm and 12.154 ± 0.206 ppm, respectively. From the above, this work conclusively demonstrates that slow pyrolysis is a unique thermochemical approach to valorize agrowastes into highly effective anti-kinetoplastid silver-loaded biochar with remarkably low cytotoxicity towards murine macrophages.

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Section: Physicochemical Properties Of Biochar and Biochar@agsupporting

confidence: 72%

Section: Physicochemical Properties Of Biochar and Biochar@agmentioning

confidence: 70%

Section: Physicochemical Properties Of Biochar and Biochar@agmentioning

confidence: 73%

Section: Physicochemical Properties Of Biochar and Biochar@agmentioning

confidence: 90%

See 2 more Smart Citations

Strong anti-kinetoplastid activity of silver nanoparticle-coated biochar

Snoussi

Sifaoui

Khalil

et al. 2022

Preprint

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show abstract

“…The number of commercially available dyes is currently estimated to exceed 1 million, where at least 10,000 difffert dyes are routinely used in the cosmetic, dyeing, leather, paper, pharmaceutical plastic, printing and textile industries (Shaikh et al 2021 ). As a result, about 0.7 million tons of dye wastes are commonly released in effluent annually (Shaikh et al 2020 ), where non-biodegradable bi-products (dyes and dyestuff) pose major environmental threats to the biosphere.…”

Section: Applications Of Biosynthesized Agnpmentioning

confidence: 99%

A review of the phytochemical mediated synthesis of AgNP (silver nanoparticle): the wonder particle of the past decade

et al. 2021

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A Cellulose‐Based Adsorbent using Box‐Behnken Design for the Adsorption of Reactive Blue 19 Dye from Simulated Wastewater

Yadav,

Rajput,

Yadav

et al. 2024

ChemistrySelect

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This study attempts a successful synthesis of a cellulose‐based adsorbent using orthophosphoric acid as a chemical activating agent followed by pyrolysis. A detailed characterization of synthesized adsorbent in terms of its morphology, material crystallinity, and surface area was studied. Batch studies were performed to remove reactive blue 19 dye from its simulated wastewater. The impact of various adsorption parameters such as adsorbent dosage (A: 0.1 to 0.5 g), initial dye concentration (B: 100 to 500 mg/L), contact time (C: 10 to 180 min), pH (D: 2 to 10), temperature (E: 35 to 60 °C) were examined and optimized using on Box‐Behnken method with Response Surface Methodology. The experimentally obtained adsorption data were fitted to different isotherms and kinetic models. The findings prove that more than 96 % of 400 mg/L of RB19 dye removal is possible with 4 g/L dosage in 18.5 min at 50 °C with its original pH of 6.8. Also, three cycles of regenerability and reusability of CBA gives 51.88 % of RB19 dye removal. Moreover, the possibility of using spent adsorbent in the boiler as a fuel was explored. Consequently, this research will contribute to SDG6 by maintaining circularity and sustainability in the entire process.

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Stable silver nanoparticle doped mesoporous biochar-based nanocomposite for efficient removal of toxic dyes

Cited by 57 publications

References 44 publications

Strong anti-kinetoplastid activity of silver nanoparticle-coated biochar

Strong anti-kinetoplastid activity of silver nanoparticle-coated biochar

A review of the phytochemical mediated synthesis of AgNP (silver nanoparticle): the wonder particle of the past decade

A Cellulose‐Based Adsorbent using Box‐Behnken Design for the Adsorption of Reactive Blue 19 Dye from Simulated Wastewater

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