Silver nanoparticles for enhanced dye degradation

Gola, Deepak; Kriti, Anu; Bhatt, Neha; Bajpai, Medha; Singh, Aameek; Arya, Arvind; Chauhan, Nitin; Srivastava, Sunil K.; Tyagi, Pankaj; Agrawal, Yamini

doi:10.1016/j.crgsc.2021.100132

Cited by 108 publications

(42 citation statements)

References 30 publications

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“…The linearity factor (R 2 ) was determined as 0.981. The rate constant (k) for the degradation of MB using AgNPs was derived from the straight-line gradient value based on the previously reported literature [37,[57][58][59] and is 0.106 min −1 . Moreover, the MB degrading efficiency was calculated to be >99%.…”

Section: Dye Degradation Efficiency Of the Prepared Silver Nanoparticlesmentioning

confidence: 99%

Sustainable Synthesis of Silver Nanoparticles Using Marine Algae for Catalytic Degradation of Methylene Blue

et al. 2021

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Herein, Sargassum coreanum (marine algae)-mediated silver nanoparticles (AgNPs) were successfully synthesized by a simple reduction method. The synthesized AgNPs were characterized using ultraviolet-visible spectroscopy, attenuated total reflection Fourier transformed infrared spectroscopy, X-ray diffractometry, field emission scanning electron microscopy (FESEM) with energy-dispersive X-ray (EDX) spectroscopy, and high-resolution transmission electron microscopy (HR-TEM) analysis. The acquired colloidal AgNPs were strongly absorbed around 420 nm and displayed brown color under visible light. The XRD pattern of AgNPs exposed their face-centered cubic geometry along with crystalline nature. The HRTEM images of synthesized AgNPs confirmed the mean particle size of 19 nm with a distorted spherical shape, and the calculated interlayer distance (d-spacing value) was about 0.24 nm. Further, the catalytic degradation of methylene blue using sodium borohydride and AgNPs was monitored using UV–vis spectroscopy. The result revealed that AgNPs performed as a superior catalyst, which completely degraded MB in 20 min. The rate constant for MB degradation was calculated to be 0.106 min−1, demonstrating that the marine algae-mediated AgNPs had outstanding catalytic activity. This approach is easy and environmentally benign, which can be applied for environmental-based applications such as dye degradation and pollutant detoxification.

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Section: Dye Degradation Efficiency Of the Prepared Silver Nanoparticlesmentioning

confidence: 99%

Sustainable Synthesis of Silver Nanoparticles Using Marine Algae for Catalytic Degradation of Methylene Blue

et al. 2021

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“…Thus, we used irradiated UV light, which is another well-known method for decomposing carbon compounds [ 42 , 43 , 44 ]. Moreover, AgNPs used as SERS particles can also act as a catalyst for carbon decomposition [ 45 , 46 ]. The UV lights were irradiated for a sufficiently long time (60 h) to perfectly remove the carbon residue.…”

Section: Resultsmentioning

confidence: 99%

Cost-Effective and Facile Fabrication of a Tattoo Paper-Based SERS Substrate and Its Application in Pesticide Sensing on Fruit Surfaces

et al. 2023

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Surface-enhanced Raman spectroscopy (SERS) has been transformed into a useful analytical technique with significant advantages in relation to sensitive and low-concentration chemical analyses. However, SERS substrates are expensive and the analyte sample preparation is complicated; hence, it is only used in limited areas. We have fabricated a tattoo paper-based SERS substrate by using non-complicated inkjet printing. The sensitivity of the SERS substrate was increased by removing the carbon residues via exposure to ultraviolet light without damaging the substrate. Thus, low concentrations of pesticides (up to 1 μM thiram) were measured. The SERS substrate was attached to the curved surface of an apple to demonstrate its advantages, such as the flexibility and easy attachability of tattoo paper, and its feasibility was verified by measuring 1 μM thiram on the apple’s surface. Due to its economic cost, simple usage, and rapid measurement, it will be helpful for the identification of both agricultural adulterants and food adulterants and for water-based pollutant detection. It will also possibly be helpful for medical purposes related to human body surfaces in the future.

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“…Hence, scientists grave attraction to the degradation of dye [50] . The various methods used to degrade dyes from wastewater are coagulation‐flocculation, chlorination, photocatalytic degradation, and heterogeneous catalytic degradation [51–54] . However, heterogeneous catalytic degradation using Ag/TiO 2 ‐based catalysts against methyl orange is noteworthy.…”

Section: Introductionmentioning

confidence: 99%

“…[50] The various methods used to degrade dyes from wastewater are coagulation-flocculation, chlorination, photocatalytic degradation, and heterogeneous catalytic degradation. [51][52][53][54] However, heterogeneous catalytic degradation using Ag/TiO 2 -based catalysts against methyl orange is noteworthy. In current years, significant efforts have been made to produce Ag-based TiO 2 nanoporous material to improve photocatalytic performance.…”

Section: Introductionmentioning

confidence: 99%

Tween‐85 Surfactant‐Assisted Fabrication of Silver Monoliths for Catalytic Reduction of Methyl Orange and Caffeine Sensing

et al. 2023

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An elegant method (modified sol-gel method) was developed to fabricate porous silver (Ag) monoliths using Tween-85 (T-85) as a reducing agent with and without dextran (Dex) and TiO 2 nanoparticles (TiO 2 NPs) for heterogeneous catalysis for the reduction of methyl orange (MO) using sodium borohydride (NaBH 4 ), as reducing agent and also sensor against caffeine. Ag/Tween-85/Dextran/TiO 2 NPs (Ag/T-85/Dex/TiO 2 NPs) catalyst was characterized by thermogravimetric analysis (TGA), X-ray photoelectron spectroscopy (XPS), X-ray diffraction (XRD), UV-Vis spectroscopy, transmission electron microscopy (TEM), scanning electron microscopy (SEM), Brunauer-Emmett-Teller (BET) adsorption isotherm technique, and Fourier transform infrared (FTIR) analysis. Porous Ag/T-85/Dex/TiO 2 NPs monolith degraded toxic dye methyl orange just in 25 seconds (s) which is the minimum time reported. Cyclic voltammetry (CV) using modified carbon paste electrode (CPE) together with Ag/AgCl as reference and pt as counter electrodes with 0.1 m H 2 SO 4 as supporting electrolyte were used. Ag/T-85/Dex/TiO 2 NPs À CPE acts as a sensor against caffeine with a limit of detection (LOD) and limit of quantization (LOQ) 0.654 ng mL À 1 and 0.876 ng mL À 1 respectively and sensitivity is 0.236 μA/mm/cm 2 .

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Silver nanoparticles for enhanced dye degradation

Cited by 108 publications

References 30 publications

Sustainable Synthesis of Silver Nanoparticles Using Marine Algae for Catalytic Degradation of Methylene Blue

Sustainable Synthesis of Silver Nanoparticles Using Marine Algae for Catalytic Degradation of Methylene Blue

Cost-Effective and Facile Fabrication of a Tattoo Paper-Based SERS Substrate and Its Application in Pesticide Sensing on Fruit Surfaces

Tween‐85 Surfactant‐Assisted Fabrication of Silver Monoliths for Catalytic Reduction of Methyl Orange and Caffeine Sensing

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