Improved photocatalytic efficiency of SnO2 nanoparticles through green synthesis

Luque, P.A.; Nava, O.; Soto-Robles, C.A.; Chinchillas-Chinchillas, Manuel J.; Garrafa-Gálvez, H.E.; Báez-López, Yolanda; Valdez, K.P.; Vilchis-Néstor, Alfredo R.; Castro-Beltrán, A.

doi:10.1016/j.ijleo.2020.164299

Cited by 55 publications

(26 citation statements)

References 59 publications

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“…The photocatalysts mostly used today are oxide semiconductor NPs, such as titanium dioxide (TiO 2 ), tin dioxide (SnO 2 ), copper oxide (CuO), iron oxide (III) (Fe 2 O 3 ), wolfram oxide (WO 3 ), ZnO, etc. [13][14][15][16][17][18]. ZnO is a material with excellent thermal stability and is a multifunctional material.…”

Section: Introductionmentioning

confidence: 99%

ZnO Semiconductor Nanoparticles and Their Application in Photocatalytic Degradation of Various Organic Dyes

et al. 2021

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The biosynthesis of oxide semiconductor nanoparticles (NPs) using materials found in nature opens a wide field of study focused on sustainability and environmental protection. Biosynthesized NPs have the capacity to eliminate organic dyes, which pollute water and cause severe damage to the environment. In the present work, the green synthesis of zinc oxide (ZnO) NPs was carried out using Capsicum annuum var. Anaheim extract. The photocatalytic elimination of methylene blue (MB), methyl orange (MO), and Rhodamine B (RhB) in UV radiation was evaluated. The materials were characterized by scanning and transmission electron microscopy (SEM and TEM) and SEM-coupled energy dispersive spectroscopy (EDS), attenuated total reflectance-infrared (ATR-IR), X-ray photoelectron spectroscopy (XPS), X-ray diffraction (XRD), Photoluminescence (PL), and ultraviolet-visible spectroscopy (UV-Vis). The TEM analysis showed the NPs have an average size of 40 nm and quasi-spherical shape. ATR-IR showed the ZnO NPs contained functional groups from the extract. The analysis through XRD indicated that the NPs have a hexagonal zincite crystal structure with an average crystallite size of approximately 17 nm. The photoluminescence spectrum (PL) presented an emission band at 402 nm. From the UV-Vis spectra and TAUC model, the band-gap value was found to be 2.93 eV. Finally, the photocatalytic assessment proved the ZnO NPs achieved 100% elimination of MB at 60 min exposure, and 85 and 92% degradation of MO and RhB, respectively, at 180 min. This indicates that ZnO NPs, in addition to using a friendly method for their synthesis, manage to have excellent photocatalytic activity in the degradation of various organic pollutants.

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Section: Introductionmentioning

confidence: 99%

ZnO Semiconductor Nanoparticles and Their Application in Photocatalytic Degradation of Various Organic Dyes

et al. 2021

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“…A strong bond at around 620-671 cm − 1 was detected which can be attributed to the anti-symmetric vibrations of Sn-O-Sn band (Begum and Ahmaruzzaman, 2018;Begum et al, 2016). A broad bond at the 3399-3442 cm − 1 and moderate bond at 1637-1657 cm − 1 might be related to stretching vibration and bending vibration of hydroxyl groups (-OH), respectively, which exists on the surface of SnO 2 preparations due to the physical adsorption of H 2 O molecules (Begum and Ahmaruzzaman, 2018;Das and Roy, 2019;Jahnavi et al, 2019;Luque et al, 2020). The peak at 2923-2925 cm − 1 detected in all selected SnO 2 preparations can be related to the C-H asymmetric stretching (Begum and Ahmaruzzaman, 2018).…”

Section: Surface Properties and Particles Size Distributionmentioning

confidence: 95%

Synthesis and characterization of SnO2 crystalline nanoparticles: A new approach for enhancing the catalytic ozonation of acetaminophen

Rashidashmagh

Bennani

Tizghadam-Ghazani

et al. 2021

Journal of Hazardous Materials

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A novel sol-gel method was employed in this study to efficiently synthesize SnO 2 nanoparticles to catalyze the ozonation of acetaminophen (ACT) from aqueous solutions. The influence of various parameters including Sn source, type of capping and alkaline agents, and calcination temperature on the catalytic activity of the SnO 2 preparations was investigated. The SnO 2 nanoparticles prepared by tin tetrachloride as Sn source, NaOH as gelatin agent, CTAB as capping agent and at calcination temperature of 550 • C (SnNaC-550) exhibited the maximum performance in the catalysis of ACT. The optimized catalyst (SnNaC-550) had spherical-homogeneous and cubic-shaped nanocrystalline particles with 5.5 nm mean particle size and a BET surface area of 81 m 2 /g, which resulted in 98% degradation and 84% mineralization of 50 mg/L ACT at 20 and 30 min reaction time, respectively when combined with ozonation (COP). Based on the radical scavenger experiments, • OH was the major oxidizing agent involved in the removal of ACT. LC/MS analysis showed that short-chain carboxylic acids were the main intermediates. Furthermore, the SnNaC-550 catalytic activity was preserved after four successive cycles. Collectively, the new method has the potential to efficiently synthesize stable and reusable SnO 2 nanoparticles to catalyze the ozonation of ACT from aquatic environments.

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“…There are different mechanisms of NPs formation using microorganisms [38]. A huge variety of nature biological materials, including plants [43][44][45][46][47][48][49][50][51], algae [52][53][54][55][56], fungi [57][58][59][60][61], yeast [62][63][64][65], bacteria [66][67][68][69], viruses [70], etc., can be used for the synthesis of "green" NPs (Figure 3).…”

Section: Biological Components For "Green" Synthesismentioning

confidence: 99%

Green Synthesis of Metal and Metal Oxide Nanoparticles: Principles of Green Chemistry and Raw Materials

et al. 2021

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Increased request for metal and metal oxide nanoparticles nanoparticles has led to their large-scale production using high-energy methods with various toxic solvents. This cause environmental contamination, thus eco-friendly “green” synthesis methods has become necessary. An alternative way to synthesize metal nanoparticles includes using bioresources, such as plants and plant products, bacteria, fungi, yeast, algae, etc. “Green” synthesis has low toxicity, is safe for human health and environment compared to other methods, meaning it is the best approach for obtaining metal and metal oxide nanoparticles. This review reveals 12 principles of “green” chemistry and examples of biological components suitable for “green” synthesis, as well as modern scientific research of eco-friendly synthesis methods of magnetic and metal nanoparticles. Particularly, using extracts of green tea, fruits, roots, leaves, etc., to obtain Fe3O4 NPs. The various precursors as egg white (albumen), leaf and fruit extracts, etc., can be used for the „green” synthesis of spinel magnetic NPs. “Green” nanoparticles are being widely used as antimicrobials, photocatalysts and adsorbents. “Green” magnetic nanoparticles demonstrate low toxicity and high biocompatibility, which allows for their biomedical application, especially for targeted drug delivery, contrast imaging and magnetic hyperthermia applications. The synthesis of silver, gold, platinum and palladium nanoparticles using extracts from fungi, red algae, fruits, etc., has been described.

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Improved photocatalytic efficiency of SnO2 nanoparticles through green synthesis

Cited by 55 publications

References 59 publications

ZnO Semiconductor Nanoparticles and Their Application in Photocatalytic Degradation of Various Organic Dyes

ZnO Semiconductor Nanoparticles and Their Application in Photocatalytic Degradation of Various Organic Dyes

Synthesis and characterization of SnO2 crystalline nanoparticles: A new approach for enhancing the catalytic ozonation of acetaminophen

Green Synthesis of Metal and Metal Oxide Nanoparticles: Principles of Green Chemistry and Raw Materials

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