Green synthesis of Konjac glucomannan templated palladium nanoparticles for catalytic reduction of azo compounds and hexavalent chromium

Wei, Dong; Liu, Luqing; Nai, Jianbo; Liu, Ying; Xiong, Yi; Peng, Junjun; Mahmud, Sakil; Liu, Huihong

doi:10.1016/j.matchemphys.2021.124651

Cited by 34 publications

(8 citation statements)

References 89 publications

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“…For instance, guar gum produced 70-80 nm spherical Pd NPs (Anjum et al, 2020), gum acacia produced 9 nm spherical Pd NPs (Devi et al, 2011), and xanthan gum produced 10 nm spherical Pd NPs (Venkatesham et al, 2015). In addition, other sugars such as glucosamine (Ullah et al, 2018) and glucomannan (Chen et al, 2021) resulted in the synthesis of 3-9 nm and 6 nm spherical Pd NPs, respectively. Interestingly, gums, glucosamine, and glucomannan acted as both reducing and stabilization agents for the production of Pd NPs.…”

Section: Other Examples Of Biologically-mediated Synthesis Of Pd Npsmentioning

confidence: 99%

Synthesis methods and applications of palladium nanoparticles: A review

Joudeh

Saragliadis

Koster

et al. 2022

Front. Nanotechnol.

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Palladium (Pd) is a key component of many catalysts. Nanoparticles (NPs) offer a larger surface area than bulk materials, and with Pd cost increasing 5-fold in the last 10 years, Pd NPs are in increasing demand. Due to novel or enhanced physicochemical properties that Pd NPs exhibit at the nanoscale, Pd NPs have a wide range of applications not only in chemical catalysis, but also for example in hydrogen sensing and storage, and in medicine in photothermal, antibacterial, and anticancer therapies. Pd NPs, on the industrial scale, are currently synthesized using various chemical and physical methods. The physical methods require energy-intensive processes that include maintaining high temperatures and/or pressure. The chemical methods usually involve harmful solvents, hazardous reducing or stabilizing agents, or produce toxic pollutants and by-products. Lately, more environmentally friendly approaches for the synthesis of Pd NPs have emerged. These new approaches are based on the use of the reducing ability of phytochemicals and other biomolecules to chemically reduce Pd ions and form NPs. In this review, we describe the common physical and chemical methods used for the synthesis of Pd NPs and compare them to the plant- and bacteria-mediated biogenic synthesis methods. As size and shape determine many of the unique properties of Pd NPs on the nanoscale, special emphasis is given to the control of these parameters, clarifying how they impact current and future applications of this exciting nanomaterial.

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Section: Other Examples Of Biologically-mediated Synthesis Of Pd Npsmentioning

confidence: 99%

Synthesis methods and applications of palladium nanoparticles: A review

Joudeh

Saragliadis

Koster

et al. 2022

Front. Nanotechnol.

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“…TEM analysis shows the particles as spherical and worm-like shapes. During the removal of Cr, the absorption peak was seen at 350 nm which was estimated because of the LMCT with an overall of 93% of Cr reduction at 45 °C along with Azo dyes reduction; the entire mechanism followed the pseudo-first-order [9].…”

Section: Role Of Phytonanotechnology In Removal Of Water Contaminationmentioning

confidence: 99%

“…These NPs are suitable for eliminating toxic organic compounds and dyes with visible light illumination under ambient temperature. 3-mercaptopropionic acid (3-MPA) demonstrated an adsorptive capacity of 81.2 mg/g at 25 °C and the highest adsorptive rate (98.57% MG removal within 120 min) persisting over a wide pH range (6)(7)(8)(9)(10)(11)(12). A removal efficiency of more than 85% was further obtained when the adsorbent (3-MPA@PMNPs) was recovered and reused for a total of five times [47].…”

Section: Journal Of Nanomaterialsmentioning

confidence: 99%

Role of Phytonanotechnology in the Removal of Water Contamination

Gole

John

Krishnamoorthy

et al. 2022

Journal of Nanomaterials

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Environmental pollution is expedited by the rapid increase in population, urbanization, industrialization, and growth in the global economy. Water contamination is accelerated by the incautious disposal of wastes into water bodies. The need of the hour is to develop novel, ergonomic, subsidized, and reproducible technologies that assist in the remediation of such wastes that require minimal human intervention, preserve the quality of water, and are eco-friendly. Phytonanotechnology is emerging as a promising strategy, characterized by the biosynthesis of metallic nanomaterials and nanoparticles (NPs) using plant-based sources. Conventional remediation technologies like adsorptive, reactive, in situ, ex situ, and open fabrication of phytogenic magnetic NPs (PMNPs) have already been established in scientific literature. A keen understanding of building material platforms, fabricating and performance-optimizing are required to develop nanomaterials capable of addressing environmental issues. Furthermore, their antimicrobial activity, biodegradability and biocompatibility, optoelectronic properties, low toxicity, availability, energy efficiency, and versatility have been utilized efficiently.

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“…is required to convert metallic ions to nanoparticles and stabilize them. [26] Recently we have tested different sources of polysaccharides such as sodium alginate, [27] sodium hyaluronate, [28] cellulose, [29] chitosan, [30] konjac, [31] and kappa carrageen [32] as a bio-template for the synthesis of metal nanoparticles. Some polymers such as polyacrylic acid or hyperbranched polymers have also used AgNPs synthesis.…”

Section: Introductionsmentioning

confidence: 99%

Bioreduction and Stabilization of Nanosilver using Chrysanthemum Phytochemicals for Antibacterial and Wastewater Treatment

et al. 2022

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An easy, sustainable, and one-step method has been explored to synthesize colloidal silver nanoparticles (AgNPs) using Chrysanthemum (CT) flower extract and applied for antibacterial treatment and azo dye catalysis. The synthesis parameters (effect of CT extract concentration, reaction temperature, time, and pH) were thoroughly examined via a one-variable-at-a-time (OVAT) method to identify an optimization condition. The characterization of AgNPs produced at as-obtained optimum condition found that the nanoparticles are primarily spherical/ oval shape, nanometer size (1.98 � 0.57 nm), very crystalline (dspacing = 0.236 nm), significantly stabilized (zeta potential = À 22.1 mV). The characterizations also indicated that the AgNPs were produced by the redox reaction between plant phytochemicals and metal cations and stabilized via encapsulation of plant phytochemicals. The bacterial resistivity AgNPs was monitored by the agar disk diffusion test and found to be highly effective towards both Staphylococcus aureus (+ ev) and Escherichia coli (À ev) bacteria. Moreover, the synthesized AgNPs displayed an innate catalytic reduction of azo dyes such as acid red 1 (AR1) and acid blue 29 (AB29). The degradation reactions were followed pseudo-first-order kinetics model and the rate constants k were calculated to be 0.45528 min À 1 (r 2 = 0.94465) for AR1 and 0.28214 min À 1 (r 2 = 0.88764) for AB29, respectively. This study reveals the prospect of CT flower extract as a botanical source for the biosynthesis of AgNPs and its potential application in bacterial reduction and azo-contaminated wastewater treatment.

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Green synthesis of Konjac glucomannan templated palladium nanoparticles for catalytic reduction of azo compounds and hexavalent chromium

Cited by 34 publications

References 89 publications

Synthesis methods and applications of palladium nanoparticles: A review

Synthesis methods and applications of palladium nanoparticles: A review

Role of Phytonanotechnology in the Removal of Water Contamination

Bioreduction and Stabilization of Nanosilver using Chrysanthemum Phytochemicals for Antibacterial and Wastewater Treatment

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