Green synthesis of gum-acacia assisted gold-hydroxyapatite nanostructures – Characterization and catalytic activity

Sreedhar, B.; Devi, D. Keerthi; Neetha, A. Sai; Kumar, V. Pavan; Chary, Komandur V. R.

doi:10.1016/j.matchemphys.2014.12.031

Cited by 28 publications

(7 citation statements)

References 65 publications

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“…Green synthesis of HA got extensive scope because of its eco-friendly. Reducing, capping and stabilizing properties of many plant extracts such as Moringa oleifera leaf, gum-arabic, grape seed, banana, tamarind extract, Coccinia grandis and Azadirachta indica, orange, and potato peel, papaya leaf and calendula flower [10][11][12][13][14][15][16]. When an aqueous plant extract is used a green reducing agent during the synthesis of metal or metal oxide nanoparticles, explaining the role of a particular phytochemical is not an easy one.…”

Section: Introductionmentioning

confidence: 99%

Experimental studies on caffeine mediated synthesis of hydroxyapatite nanorods and their characterization

Subramanian¹,

Murugan²,

Chinnadurai³

et al. 2020

Mater. Res. Express

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Hydroxyapatite nanorods (HA) were fabricated using caffeine as a modifier at room temperature. Various concentrations of caffeine were utilized to synthesize the HA nanoparticles to analyze its effect on size, shape and morphology. The formation of phosphate ion was confirmed by Fourier Transform spectrophotometer (FTIR). Crystalline structure and phase of the nanoparticles was confirmed by x-ray diffraction study (XRD). The formation of HA nanorods with diversified morphology was confirmed by Transmission Electron Microscope (TEM) images. The results acquired in this study reveals that the HA nanoparticles synthesized using caffeine are uniform and evenly scattered nanorods. The average size of the nanorods obtained from the XRD study was in the range of 20-30 nm. The TEM and SAED investigation revealed the shape, morphology and arrangement of HA nanorods with higher crystallinity. This investigation claims that caffeine is a natural modifier to produce HA nanorods.

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Section: Introductionmentioning

confidence: 99%

Experimental studies on caffeine mediated synthesis of hydroxyapatite nanorods and their characterization

Subramanian¹,

Murugan²,

Chinnadurai³

et al. 2020

Mater. Res. Express

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“…Previously established by our TGA-MS studies, the evolution of CO 2 during these decomposition stages results from the breakdown of -COOH functional groups found in GA, indicating that these nanostructures are inorganic-organic hybrid materials. [65][66][67] Figure 6 Thermogram of as-prepared GA-Ag-SiO 2…”

Section: Paper Synopenmentioning

confidence: 99%

Gum Acacia Stabilized Ag-TiO2 and Ag-SiO2: Sustainable Nanocatalysts for Direct and Convenient Synthesis of 5-Substituted 1H-tetrazoles

Prakash,

Sreedhar,

Naidu

2023

SynOpen

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We describe the use of biocompatible gum acacia (GA)-assembled Ag-TiO2 and Ag-SiO2 nanostructures as effective heterogeneous catalysts for the synthesis of 5-substituted 1H-tetrazoles through the traditional [3+2] cycloaddition of aryl nitriles with sodium azides. Characterization of the prepared catalysts employing TEM, XPS, FE-SEM, FT-IR, XRD, and TGA-DTG reveals silver nanoparticles encapsulated in the GA matrix amidst modified nano titania or silica. A variety of structurally divergent aryl nitriles were converted into the corresponding tetrazoles in a short reaction time. Other advantages include low catalytic load, easy handling of catalyst, limited use of toxic reagents, and desirable conversion yields, making this protocol a viable and practical alternative for this cyclization. The catalysts can be easily recovered and reused over multiple cycles without significant loss of catalytic activity.

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“…The observed report indicates that the changes were due to an interaction of the carboxyl functional group of Gum acacia with Ca cations. 158,159 In Fig. 3a, the SEM image of HAp synthesized by commercially purchased malic acid as the template shows particles that are larger, agglomerated, and look like balls.…”

Section: Role Of Phytochemicals In Pms Of Nano-hapmentioning

confidence: 99%

A plant-mediated synthesis of nanostructured hydroxyapatite for biomedical applications: a review

2020

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Green synthesis of gum-acacia assisted gold-hydroxyapatite nanostructures – Characterization and catalytic activity

Cited by 28 publications

References 65 publications

Experimental studies on caffeine mediated synthesis of hydroxyapatite nanorods and their characterization

Experimental studies on caffeine mediated synthesis of hydroxyapatite nanorods and their characterization

Gum Acacia Stabilized Ag-TiO2 and Ag-SiO2: Sustainable Nanocatalysts for Direct and Convenient Synthesis of 5-Substituted 1H-tetrazoles

A plant-mediated synthesis of nanostructured hydroxyapatite for biomedical applications: a review

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