Environmental remediation by nanoadsorbents-based polymer nanocomposite

Singh, Pradeep Pratap; Ambika, .

doi:10.1016/b978-0-12-811033-1.00010-x

Cited by 18 publications

(6 citation statements)

References 97 publications

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“…Nanotechnology has gained much attention in environmental remediation over the last few decades [1]. Nanotechnology is an advanced technology that works on the material in nanometer scale (1-100 nm) and produces materials, devices, and systems with specific and novel properties and functions by controlling the size and the shape of matters [1,4,9]. The nanomaterials are broadly categorized as organic and inorganic nanomaterials.…”

Section: Nanotechnology and Its Advantages And Applicationsmentioning

confidence: 99%

Starch-Based Hybrid Nanomaterials for Environmental Remediation

Gamage¹,

Thiviya²,

Madhujith³

2022

Biochemistry

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Environmental pollution is becoming a major global issue with increasing anthropogenic activities that release massive toxic pollutants into the land, air, and water. Nanomaterials have gained the most popularity in the last decades over conventional methods because of their high surface area to volume ratio and higher reactivity. Nanomaterials including metal, metal oxide, zero-valent ions, carbonaceous nanomaterials, and polymers function as adsorbents, catalysts, photocatalysts, membrane (filtration), disinfectants, and sensors in the detection and removal of various pollutants such as heavy metals, organic pollutants, dyes, industrial effluents, and pathogenic microbial. Polymer-inorganic hybrid materials or nanocomposites are highly studied for the removal of various contaminants. Starch, a heteropolysaccharide, is a natural biopolymer generally incorporated with other metal, metal oxide, and other polymeric nanoparticles and has been reported in various environmental remediation applications as a low-cost alternative for petroleum-based polymers. Therefore, this chapter mainly highlights the various nanomaterials used in environmental remediation, starch-based hybrid nanomaterials, and their application and limitations.

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Section: Nanotechnology and Its Advantages And Applicationsmentioning

confidence: 99%

Starch-Based Hybrid Nanomaterials for Environmental Remediation

Gamage¹,

Thiviya²,

Madhujith³

2022

Biochemistry

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“…Nanoremediation is an innovative remediation technique that relies on the use of nanomaterials. Nanoremediation allows to tackle and address the formidable challenges of 21 st century such as pollution crisis, contaminated land management, restoration of environmental imbalance and presents innovative solutions for quick and efficient removal of pollutants from contaminated environment El-Ramady et al, 2017;Singh and Ambika, 2018). The technologies employing nanostructures has potential not only to reduce the overall costs of cleaning up large scale contaminated, but also to reduce clean-up time, eliminate the need for treatment and disposal of contaminated materials, and reduce contaminant concentration to near zero-all in situ (Corsi et al, 2018;Karn et al, 2009).…”

Section: Introductionmentioning

confidence: 99%

Nanoremediation technologies for sustainable remediation of contaminated environments: Recent advances and challenges

et al. 2021

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A major and growing concern within society is the lack of innovative and effective solutions to mitigate the challenge of environmental pollution. Uncontrolled release of pollutants into the environment as a result of urbanisation and industrialisation is a staggering problem of global concern. Although, the eco-toxicity of nanotechnology is still an issue of debate, however, nanoremediation is a promising emerging technology to tackle environmental contamination, especially dealing with recalcitrant contaminants. Nanoremediation represents an innovative approach for safe and sustainable remediation of persistent organic compounds such as pesticides, chlorinated solvents, brominated or halogenated chemicals, perfluoroalkyl and polyfluoroalkyl substances (PFAS), and heavy metals. This comprehensive review article provides a critical outlook on the recent advances and future perspectives of nanoremediation technologies such as photocatalysis, nano-sensing etc., applied for environmental decontamination. Moreover, sustainability assessment of nanoremediation technologies was taken into consideration for tackling legacy contamination

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“…17 However, the large band gap semiconductors suffer a drawback, that is, they absorb UV light which is only 4% of the solar spectrum. To shift the absorption of these semiconductors to the visible region, several procedures are followed, such as metal ion doping, 18,19 heterostructure fabrication, 20,21 formation of polymer nanocomposites, 22 and metal organic frameworks. 23 To further improve the visible light response and photocatalytic performance, ternary composites are preferred.…”

Section: Introductionmentioning

confidence: 99%

“…However, the large band gap semiconductors suffer a drawback, that is, they absorb UV light which is only 4% of the solar spectrum. To shift the absorption of these semiconductors to the visible region, several procedures are followed, such as metal ion doping, , heterostructure fabrication, , formation of polymer nanocomposites, and metal organic frameworks . To further improve the visible light response and photocatalytic performance, ternary composites are preferred. , Ternary nanocomposites are promising materials for usage as photocatalysts, electrochemical sensors, and energy storage devices and exhibit improved light absorption and power density, improved stability, and better catalytic activity.…”

Section: Introductionmentioning

confidence: 99%

Ag₂S-Sensitized NiO–ZnO Heterostructures with Enhanced Visible Light Photocatalytic Activity and Acetone Sensing Property

et al. 2019

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Visible light-driven Ag 2 S-grafted NiO–ZnO ternary nanocomposites are synthesized using a facile and cost-effective homogeneous precipitation method. The structural, morphological, and optical properties were extensively studied, confirming the formation of ternary nanocomposites. The surface area of the synthesized nanocomposites was calculated by electrochemical double-layer capacitance ( C dl ). Ternary Ag 2 S/NiO–ZnO nanocomposites showed excellent visible light photocatalytic property which increases further with the concentration of Ag 2 S. The maximum photocatalytic activity was shown by 8% Ag 2 S/NiO–ZnO with a RhB degradation efficiency of 95%. Hydroxyl and superoxide radicals were found to be dominant species for photodegradation of RhB, confirmed by scavenging experiments. It is noteworthy that the recycling experiments demonstrated high stability and recyclable nature of the photocatalyst. Moreover, the electrochemical results indicated that the prepared nanocomposite exhibits remarkable activity toward detection of acetone. The fabricated nanocomposite sensor showed high sensitivity (4.0764 μA mmol L –1 cm –2 ) and a lower detection limit (0.06 mmol L –1 ) for the detection of acetone. The enhanced photocatalytic and the sensing property of Ag 2 S/NiO–ZnO can be attributed to the synergistic effects of strong visible light absorption, excellent charge separation, and remarkable surface properties.

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Environmental remediation by nanoadsorbents-based polymer nanocomposite

Cited by 18 publications

References 97 publications

Starch-Based Hybrid Nanomaterials for Environmental Remediation

Starch-Based Hybrid Nanomaterials for Environmental Remediation

Nanoremediation technologies for sustainable remediation of contaminated environments: Recent advances and challenges

Ag₂S-Sensitized NiO–ZnO Heterostructures with Enhanced Visible Light Photocatalytic Activity and Acetone Sensing Property

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Environmental remediation by nanoadsorbents-based polymer nanocomposite

Cited by 18 publications

References 97 publications

Starch-Based Hybrid Nanomaterials for Environmental Remediation

Starch-Based Hybrid Nanomaterials for Environmental Remediation

Nanoremediation technologies for sustainable remediation of contaminated environments: Recent advances and challenges

Ag2S-Sensitized NiO–ZnO Heterostructures with Enhanced Visible Light Photocatalytic Activity and Acetone Sensing Property

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Product

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Ag₂S-Sensitized NiO–ZnO Heterostructures with Enhanced Visible Light Photocatalytic Activity and Acetone Sensing Property