Hydrogel Nanocomposite Adsorbents and Photocatalysts for Sustainable Water Purification

Kumar, Neeraj; Gusain, Rashi; Pandey, Sadanand; Ray, Suprakas Sinha

doi:10.1002/admi.202201375

Cited by 54 publications

(36 citation statements)

References 444 publications

(561 reference statements)

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“…The removal of dyes and other impurities from the water bodies has become a puzzling assignment in modern times. Hence, numerous approaches have been implemented to tackle such issues. − Photocatalysis may be the top remedy in capturing the sunlight and degrading water pollutants …”

Section: Introductionmentioning

confidence: 99%

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Comparative Studies on Synthesis, Characterization and Photocatalytic Activity of Ag Doped ZnO Nanoparticles

et al. 2023

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In this work, silver (Ag) doped zinc oxide (ZnO) nanoparticles were synthesized using zinc chloride, zinc nitrate, and zinc acetate precursors with (0 to 10) wt % Ag doping by a simple reflux chemical method. The nanoparticles were characterized by X-ray diffraction, scanning electron microscopy, transmission electron microscopy, ultraviolet visible spectroscopy, and photoluminescence spectroscopy. The nanoparticles are studied as a photocatalyst for visible light driven annihilation of methylene blue and rose bengal dyes. The 5 wt % Ag doped ZnO displayed optimum photocatalytic activity toward methylene blue and rose bengal dye degradation at the rate of 13 × 10 −2 min −1 and 10 × 10 −2 min −1 , respectively. Here we report antifungal activity for the first time using Ag doped ZnO nanoparticles against Bipolaris sorokiniana, displaying 45% efficiency for 7 wt % Ag doped ZnO.

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Section: Introductionmentioning

confidence: 99%

“…Hence, numerous approaches have been implemented to tackle such issues. 1 − 3 Photocatalysis may be the top remedy in capturing the sunlight and degrading water pollutants. 4 …”

Section: Introductionmentioning

confidence: 99%

Comparative Studies on Synthesis, Characterization and Photocatalytic Activity of Ag Doped ZnO Nanoparticles

et al. 2023

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“…Fabric industries eliminate large quantities of polluted wastewater that possess organic dyes . Coloring reagents are one of the recognized types of water pollutants that should be extracted from wastewater prior to release within aquatic techniques. − Actually, a concentration of 1.0 mg/L provides sufficient coloration and can be unsuitable for consumption by human beings and also contaminate water bodies. There are vast concerns related to the contamination of water by dyes as a kind of organic contaminant due to their persistence and coloration results .…”

Section: Introductionmentioning

confidence: 99%

Metal–Organic Framework-Based Materials for Wastewater Treatment: Superior Adsorbent Materials for the Removal of Hazardous Pollutants

et al. 2023

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In previous years, different pollutants, for example, organic dyes, antibiotics, heavy metals, pharmaceuticals, and agricultural pollutants, have been of note to the water enterprise due to their insufficient reduction during standard water and wastewater processing methods. MOFs have been found to have potential toward wastewater management. This Review focused on the synthesis process (such as traditional, electrochemical, microwave, sonochemical, mechanochemical, and continuous-flow spray-drying method) of MOF materials. Moreover, the properties of the MOF materials have been discussed in detail. Further, MOF materials’ applications for wastewater treatment (such as the removal of antibiotics, organic dyes, heavy metal ions, and agricultural waste) have been discussed. Additionally, we have compared the performances of some typical MOFs-based materials with those of other commonly used materials. Finally, the study’s current challenges, future prospects, and outlook have been highlighted.

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“…[1][2][3] Typically, they are hydrophilic, threedimensional (3D) networks constructed through physical or chemical crosslinking. Hydrogels have drawn tremendous attention of researchers owing to their widespread applications in biomedicine, [4][5][6] bionic smart material, [7,8] adsorption [9] and electrochemistry. [10] Even though, traditional hydrogels are still difficult to meet specially required functions in many cases.…”

Section: Introductionmentioning

confidence: 99%

Carbon Dot‐Based Hydrogels: Preparations, Properties, and Applications

Wang

Yin

et al. 2023

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heat, electricity, magnetism, mechanics, and chemistry. For example, the involvement of nanoparticles has proved to be an effective strategy to impart multifunctional properties to the hydrogels. [11] As a composite material, nanoparticle hydrogel composites have made remarkable progress in the fields of biomedicine, [12,13] sensing, [14,15] advanced energy technology, [16] environment and industry. [17] For another example, fluorescent hydrogels have been constructed by introducing organic dyes, [18,19] lanthanides, [20,21] or semiconductor quantum dots [22] into the hydrogel system.CDs are a novel class of carbon-based nanomaterials, which can be viewed as the relatives of nanoparticles with contractible sizes (typically <10 nm). Compared with other nanoparticles, CDs have high photostability, [23] low cost, [24] good biocompatibility, [25] high water solubility, and tunable photoluminescence. [26] These intriguing properties afford CDs many potential applications in biomedicine, [27,28] sensing, [29,30] catalysis, [31,32] optoelectronic devices, [33][34][35] and anticounterfeiting. [36] The emergence of CDs solved the long-lasting drawbacks of traditional PL materials, such as the poor photostability of organic dyes, the high cost of lanthanides, and the toxicity of semiconductor quantum dots. Generally, CDs can be obtained by two strategies. One is the top-down route, in which the CDs are broken off from larger carbon species. The other is the bottomup route, in which the CDs are synthesized by using molecular precursors. [37] According to the micro-/nanostructure, formation mechanism, and precursors used, CDs are mainly divided into four categories: [38] graphene quantum dots (GQDs), carbon quantum dots (CQDs), carbon nanodots (CNDs), and carbonized polymer dots (CPDs). GQDs with one or multiple-layer graphite structure and apparent graphene lattices are generally gained by "top-down" prepared routes: oxidation of cutting bulky graphitized carbon materials. CQDs, CNDs, and CPDs are usually synthesized from biomass, small molecules, or polymers by assembling, polymerization, crosslinking, and carbonization by "bottom-up" routes. CQDs have graphitelike crystal lattices with surface functional groups, showing internal state luminescence and the quantum size confinement. CNDs also have a large number of functional groups on the surface, but the cores of CNDs contain amorphous carbon without apparent crystal lattices. [39] CPDs have unique "core-shell" nanostructures, consisting of carbon cores with Hydrogels have extremely high moisture content, which makes it very soft and excellently biocompatible. They have become an important soft material and have a wide range of applications in various fields such as biomedicine, bionic smart material, and electrochemistry. Carbon dot (CD)-based hydrogels are based on carbon dots (CDs) and auxiliary substances, forming a gel material with comprehensive properties of individual components. CDs embedding in hydrogels could not only solve their aggregation-caused quenching (A...

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Hydrogel Nanocomposite Adsorbents and Photocatalysts for Sustainable Water Purification

Cited by 54 publications

References 444 publications

Comparative Studies on Synthesis, Characterization and Photocatalytic Activity of Ag Doped ZnO Nanoparticles

Comparative Studies on Synthesis, Characterization and Photocatalytic Activity of Ag Doped ZnO Nanoparticles

Metal–Organic Framework-Based Materials for Wastewater Treatment: Superior Adsorbent Materials for the Removal of Hazardous Pollutants

Carbon Dot‐Based Hydrogels: Preparations, Properties, and Applications

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