Highly efficient catalytic reduction of 4-nitrophenol and organic dyes by ultrafine palladium nanoparticles anchored on CeO2 nanorods

Wang, Wenxia; Dai, Guodong; Yang, Haibin; Liu, Xiaofeng; Chen, Xi; Meng, Zhenbang; He, Qi

doi:10.1007/s11356-021-16276-1

Cited by 15 publications

(2 citation statements)

References 48 publications

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“…In these processes, there may be a large redox potential difference between the electron donor (BH 4 − ion) and acceptor (dye) species, which can hamper the relay of electrons 27 . In contrast, catalytic reductive degradation of organic dye molecules by metal nanoparticles in the presence of NaBH 4 is a relatively fast process and was recently used extensively because of its several advantages over other technologies 36 , 37 . This advantage includes the complete degradation of pollutants, simple and easy treatment procedures, and no secondary pollutant generation 38 .…”

Section: Introductionmentioning

confidence: 99%

Highly efficient catalytic degradation of organic dyes using iron nanoparticles synthesized with Vernonia Amygdalina leaf extract

Jara,

Mekiso,

Washe

2024

Sci Rep

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Today, nanoscience explores the potential of nanoparticles due to their extraordinary properties compared to bulk materials. The synthesis of metal nanoparticles using plant extracts is a very promising method for environmental remediation, which gets global attention due to pollution-led global warming. In the present study, iron nanoparticles (FeNPs) were successfully synthesized by the green method using Vernonia amygdalina plant leaf extract as a natural reducing and capping agent. Biosynthesized FeNPs were characterized with different analytical techniques such as UV–visible, FT-IR, XRD, and SEM. The analysis revealed the formation of amorphous FeNPs with an irregular morphology and non-uniform distribution in size and shape. The average particle size was approximately 2.31 µm. According to the catalytic degradation investigation, the FeNPs produced via the green approach are highly effective in breaking down both CV and MB into non-toxic products, with a maximum degradation efficiency of 97.47% and 94.22%, respectively, when the right conditions are met. The kinetics study exhibited a high correlation coefficient close to unity (0.999) and (0.995) for the degradation of MB and CV, respectively, for the zero-order pseudo-kinetics model, which describes the model as highly suitable for the degradation of both dyes by FeNPs compared to other models. The reusability and stability of biosynthesized nano-catalysts were studied and successfully used as efficient catalysts with a slight decrease in the degradation rate more than four times. The results from this study illustrate that green synthesized FeNPs offer a cost-effective, environmentally friendly, and efficient means for the catalytic degradation of organic dyes.

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Section: Introductionmentioning

confidence: 99%

Highly efficient catalytic degradation of organic dyes using iron nanoparticles synthesized with Vernonia Amygdalina leaf extract

Jara,

Mekiso,

Washe

2024

Sci Rep

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“…In this respect, benzimidazole derivative ligands are indispensable for coordination chemistry because they contain both electron withdrawing and donor groups in their heterocyclic structures and are frequently used in complexation reactions. Pd complexes, Pd nanoparticles and solid supported Pd nanoparticles are widely used in the catalytic reduction / degradation of the dyes in the literature (Nadagouda et al, 2012;Abdelaal & Mohamed, 2013;Hassani et al, 2015;Nguyen et al, 2018;Asadabadi et al, 2019;Wang et al, 2021). Pd metal complexes with improved electronic and chemical properties with appropriate ligand selection are used in catalysis.…”

Section: Introductionmentioning

confidence: 99%

Catalytic Use of Pd(II) Complex Bearing 2-(thiophen-2-yl)-1H-Benzimidazole Ligand for The Reduction / Degradation of Multiple Mixtures Containing 4-NP, RhB and MB Organic Pollutants

Tercan

2023

Yüzüncü Yıl Üniversitesi Fen Bilimleri Enstitüsü Dergisi

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In this study, 2-(thiophen-2-yl)1H-benzimidazole ligand (L1) and its Pd(II) complex (C1) were synthesized and characterized by FT-IR, 1H-NMR, 13C-NMR, ESI-MS spectroscopic techniques. The catalytic efficiency of the C1 complex on the reduction of 4-nitro phenol compound (4-NP) and the degradation of rhodamine B (RhB), methylene blue (MB) dyes was investigated in the presence of NaBH4 in aqueous medium. The catalytic performance was examined with single solutions of these substrates (4-NP and RhB, MB dyes) and at the end of 5 minutes, over 92% conversion was observed for all three substrates. In the catalytic trials with 4-NP + RhB + MB triple substrate mixture, 84, 94 and 93% conversion values were obtained, respectively, after 5 minutes. C1 complex catalyst is very effective in the simultaneous reduction / degradation of these toxic organic compounds from aqueous environments without any competition or selectivity.

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Swift reduction of nitroaromatics by gold nanoparticles anchored on steam-activated carbon black via simple preparation

Lai

Chen

et al. 2022

Environ Sci Pollut Res

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Gold (Au) nanoparticles supported on certain platforms display highly e cient activity on nitroaromatics reduction. In this study, steam-activated carbon black (SCB) was used as a platform to fabricate Au/SCB catalysts via a green and simple method for 4nitrophenol (4-NP) reduction. The obtained Au/SCB catalysts exhibit e cient catalytic performance in reduction of 4-NP (rate constant k app = 2.1925 min -1 ). The effects of SCB activated under different steam temperature, Au loading amount, pH and reaction temperature were studied. The structural advantages of SCB as a platform were analyzed by various characterizations. Especially, the result of N 2 adsorption-desorption method showed that steam activating process could bring higher surface area (from 185.9689 m²/g to 249.0053 m²/g), larger pore volume (from 0.073268 cm³/g to 0.165246 cm³/g) and more micropore for SCB when compared with initial CB, demonstrating the suitable of SCB for Au NPs anchoring, thus promoting the catalytic activity. This work contributes to the fabrication of other supported metal nanoparticle catalysts for preparing different functional nanocomposites for different applications.

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Highly efficient catalytic reduction of 4-nitrophenol and organic dyes by ultrafine palladium nanoparticles anchored on CeO2 nanorods

Cited by 15 publications

References 48 publications

Highly efficient catalytic degradation of organic dyes using iron nanoparticles synthesized with Vernonia Amygdalina leaf extract

Highly efficient catalytic degradation of organic dyes using iron nanoparticles synthesized with Vernonia Amygdalina leaf extract

Catalytic Use of Pd(II) Complex Bearing 2-(thiophen-2-yl)-1H-Benzimidazole Ligand for The Reduction / Degradation of Multiple Mixtures Containing 4-NP, RhB and MB Organic Pollutants

Swift reduction of nitroaromatics by gold nanoparticles anchored on steam-activated carbon black via simple preparation

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