Photocatalytic degradation of azo dyes by ultra-small green synthesized silver nanoparticles

Bustos-Guadarrama, Sayra; Nieto-Maldonado, Alejandra; Flores-López, Lucı́a Z.; Espinoza-Gómez, Heriberto; Alonso-Núñez, G.

doi:10.1016/j.jtice.2022.104663

Cited by 22 publications

(4 citation statements)

References 57 publications

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“…This high photocatalytic efficiency is due to the narrow band gap energy value. The ultra small size of the synthesized AgNPs/Afs was confirmed to be a mode size of 0.6 nm, with a reported size interval of 0.3 to 0.1 nm, owing to the higher photocatalytic efficiency [30].…”

Section: Wastewater Treatment 41 Dye Degradationmentioning

confidence: 84%

Advancements in Materials Science and Photocatalysts for Sustainable Development

Vadivel,

Suryakumar,

Casella

et al. 2024

Catalysts

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Materials science and catalysis advancements play a critical role in achieving sustainable development by managing environmental, energy, and resource challenges. Catalyst design advancements focus on enhancing selectivity to achieve sustainable chemical reactions, reducing energy consumption. Designing catalysts that are environmentally friendly and biodegradable is increasingly gaining importance. This aligns with the principles of green chemistry and contributes to minimizing the environmental impact of catalytic processes. These advances, taken as a whole, lead to more sustainable and efficient processes in industries ranging from energy production to pollutant removal, fueling the advancement toward a more sustainable future. Photochemistry, that is, the activation of a stable compound (catalyst) into the highly reactive excited state, is of particular importance, since photons—especially when they come from solar light—are a green and renewable resource. This review article has provided the overall idea of the photocatalysts and materials under green chemistry perspective from the standpoint of the concept of sustainable development.

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Section: Wastewater Treatment 41 Dye Degradationmentioning

confidence: 84%

Advancements in Materials Science and Photocatalysts for Sustainable Development

Vadivel,

Suryakumar,

Casella

et al. 2024

Catalysts

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show abstract

“…Some examples of these methods include co-precipitation, hydrothermal synthesis, electrochemical synthesis, and phyto-mediated synthesis. 8 The use of physicochemical methods for the synthesis has been limited due to the employment of toxic chemical substances and the requirement for high temperatures. 9 Biogenic production of AgNPs using different biologically active substances has attracted a lot of attention because of it's safe, easy, and affordable synthesis process.…”

Section: Introductionmentioning

confidence: 99%

“…The preparation of AgNPs can be achieved through a wide range of methods, including physico‐chemical and biological approaches. Some examples of these methods include co‐precipitation, hydrothermal synthesis, electrochemical synthesis, and phyto‐mediated synthesis 8 . The use of physicochemical methods for the synthesis has been limited due to the employment of toxic chemical substances and the requirement for high temperatures 9 .…”

Section: Introductionmentioning

confidence: 99%

Synthesis of chitosan and gum arabic functionalized silver nanocomposite for efficient removal of methylene blue and antibacterial activity

Bharathi,

Wadaan,

Mythili

et al. 2024

Polymers for Advanced Techs

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The discharge of industrial effluent has a harmful effect on the aquatic ecosystems and surrounding environment. The unprocessed discharge of organic dyes into the aquatic environment is a significant contributor to the aquatic pollution. Hence, it is imperative to ensure the proper disposal of organic colorants and their derivatives before their discharge into wastewater. The present study aimed to synthesis silver (Ag) nanocomposite using gum arabic (GA) and chitosan (CS) by an environment‐friendly and sustainable method. The formulated Ag nanocomposite was characterized using UV–visible, FTIR, TEM coupled with EDS. The FTIR analysis demonstrated the existence of polymers that have a crucial role in the formation of nano‐Ag‐composite. TEM revealed that the synthesized Ag nanocomposite had a spherical nanostructure, with diameters ranging from 18 to 95 nm. Further studies were conducted on Ag nanocomposite to analyze the breakdown of Methylene Blue (MB) under visible light irradiation. The synthesized Ag nanocomposite demonstrated a removal efficiency of 93.3% for MB after 60 min. Furthermore, the reusability of the Ag nanocomposite was studied, and it demonstrated substantial photocatalytic activity after three consecutive cycles. In addition, Ag nanocomposite (100 μg/mL) demonstrated potential inhibition against Escherichia coli (20 mm) and Staphylococcus aureus (18 mm). Finally, our findings showed that the synthesized nanocomposite can be employed as an outstanding photocatalyst and also bactericidal agent in both industrial and clinical sectors.

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“…Plant parts are used primarily because they are safe, widely accessible, and contain a large number of active compounds that help reduce the amount of silver ions in the body. These compounds include enzymes, proteins, alkaloids, amino acids, polysaccharides, saponins, tannins, polyphenols, terpenoids, and vitamins [12,13]. However, the existing upscaling technique necessitates the use of high-power and repetition-rate laser sources, as well as quick scanning devices, which are not widely available and expensive.…”

Section: Introductionmentioning

confidence: 99%

Exploring the efficiency of green synthesized silver nanoparticles as photocatalysts for organic dye degradation: unveiling key insights

Sharma,

Sunny,

Arulraj

et al. 2024

Nano Ex.

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Silver nanoparticles (AgNPs) have received a lot of interest for their several applications, including their remarkable potential as photocatalysts for organic dye degradation. This research thoroughly investigates the efficacy of ecologically friendly, green-synthesized AgNPs in the treatment of synthetic dye-contaminated wastewater. The synthesis of AgNPs from various biological substrates is investigated, emphasizing their economic viability, significant conductivity, and considerable biocompatibility. The improper disposal of synthetic dyes in wastewater poses severe environmental and health risks due to their non-biodegradable nature and persistent chemical features. In response to this challenge, this review paper investigates the capability of AgNPs to serve as effective photocatalysts for degrading a range of organic dyes commonly found in industrial effluents. Specific dyes, including Aniline Blue, Congo Red, Nitrophenol, Methylene Blue, and Malachite Green, are studied in the context of wastewater treatment, providing insights into the efficacy of AgNPs synthesized from diverse biological sources. The review sheds light on the photocatalytic degradation methods used by green-synthesized AgNPs, shedding light on the transition of these synthetic dyes into less hazardous compounds. It also delves into the toxicity aspect of the AgNPs and its possible remediation from the environment. The ecologically friendly synthesis procedures investigated in this work provide an alternative to traditional methods, highlighting the importance of sustainable technologies in solving modern environmental concerns. Furthermore, a comparative examination of various biological substrates for AgNPs synthesis is presented, evaluating their respective dye degradation efficiencies. This not only helps researchers understand the environmental impact of synthetic dyes, but it also directs them in choosing the best substrates for the production of AgNPs with enhanced photocatalytic activities.

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Photocatalytic degradation of azo dyes by ultra-small green synthesized silver nanoparticles

Cited by 22 publications

References 57 publications

Advancements in Materials Science and Photocatalysts for Sustainable Development

Advancements in Materials Science and Photocatalysts for Sustainable Development

Synthesis of chitosan and gum arabic functionalized silver nanocomposite for efficient removal of methylene blue and antibacterial activity

Exploring the efficiency of green synthesized silver nanoparticles as photocatalysts for organic dye degradation: unveiling key insights

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