Effect of Reaction Time and Stability Properties of Gold Nanoparticles Synthesized by &lt;i&gt;p&lt;/i&gt;-Aminobenzoic Acid and &lt;i&gt;p&lt;/i&gt;-Aminosalicylic Acid

Aji, Abdul; Santosa, Sri Juari; Kunarti, Eko Sri

doi:10.22146/ijc.44674

Cited by 8 publications

(3 citation statements)

References 24 publications

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“…The shift of AgNPs maximum wavelength could also be the parameter of AgNPs stability. [ 23 ] From Figure 3, it can be seen that the maximum wavelength was shifted by 2 nm, from 408 to 410 nm that indicated the AgNPs were slightly aggregated. This phenomenon was confirmed by PSA analysis, which gave results that the AgNPs size after synthesis was 33.3 nm and the AgNPs size after 4 weeks was 56.1 nm.…”

Section: Resultsmentioning

confidence: 99%

UV–vis Study on β‐Cyclodextrin as Dual Function for Synthesis AgNPs and Antibacterial Application

Nurkhaliza,

Fathoni,

Yati

et al. 2023

Macromolecular Symposia

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The current study reveals the synthesis of silver nanoparticles (AgNPs) with β‐cyclodextrin (β‐CDs) as a dual function, reducing, and stabilizing agent. UV–vis study is carried out to monitor the optimum condition of AgNPs formation. It is observed that setting pH at 12, 1:33 concentration ratio of AgNO3 to β‐CDs, and 5 min of incubation time are the optimum condition to synthesize AgNPs. The stability of AgNPs 4 weeks after synthesized is confirmed by the UV–vis spectra. Fourier transform infrared (FTIR) characterization reveals there is a peak appearing assigned to C=O which proves a redox reaction occurs between AgNO3 and β‐CDs. Gram‐positive (Bacillus subtilis and Staphylococcus aureus) and Gram‐negative bacteria (Escherichia coli and Pseudomonas aeruginosa) are tested to investigate the antibacterial activity of AgNPs. This study shows that AgNPs exhibit inhibition of bacterial growth.

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Section: Resultsmentioning

confidence: 99%

UV–vis Study on β‐Cyclodextrin as Dual Function for Synthesis AgNPs and Antibacterial Application

Nurkhaliza,

Fathoni,

Yati

et al. 2023

Macromolecular Symposia

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“…These factors showed that AgNPs-β-CDs were relatively stable after 5 months. The wavelength shift and increasing absorbance intensity could also be observed to study the AgNPs-β-CDs stability [27]. Fig.…”

Section: Synthesis and Stability Test Of Agnps-β-cdsmentioning

confidence: 92%

Development of a Rapid and Sensitive Probe for Colorimetric Detection of Ni<sup>2+</sup> Ion in Water Sample by β-Cyclodextrin Stabilized Silver Nanoparticles

Nurkhaliza,

Fathoni,

Prastya

et al. 2023

Indones. J. Chem.

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A rapid and selective colorimetric detection of Ni2+ was developed using silver nanoparticles (AgNPs) with β-cyclodextrin (β-CDs) as reducing and stabilizing agents. Characterization was assessed by spectrophotometer UV-vis, Fourier transform infra-red (FTIR), transmission electron microscopy (TEM), and particle size analyzer (PSA). The AgNPs-β-CDs were relatively stable after being stored for 5 months. The addition of Ni2+ to the AgNPs-β-CDs shifted the surface plasmon resonance (SPR) band at 409 nm. Synthesized AgNPs-β-CDs had a spherical shape and an average size of 25.07 ± 0.66 nm (analyzed by TEM) and 33.63 ± 0.25 nm, as confirmed by PSA. AgNPs-β-CDs as colorimetric sensors for Ni2+ ions had a good linear calibration curve at 409 nm with the R2 value of 0.9993. The limit of detection (LoD) was found to be 33.30 ppb, while the limit of quantification (LoQ) was 111.0 ppb. This sensor had been applied to a seawater sample from Ancol Beach, North Jakarta, Indonesia and it exhibited good precision and accuracy. In this work, β-CDs-synthesized AgNPs were able to detect Ni2+ ions and were beneficial as an alternative method for Ni2+ screening in environmental samples.

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“…Thus, reaction time and temperature, in addition to other parameters such as the pH of the solution and the reducing agents influences the physical parameters of the NPs. Shorter reaction times mainly produce smaller and spherical sizes, whereas longer times change the nanospheres to other shapes such as nanoprisms [40]. Optical properties of the HB-AuNPs were measured at 0-2 h, designated as T0-T2.…”

Section: Effect Of Temperature Hbe Concentration and Timementioning

confidence: 99%

Anticancer and Drug-Sensitizing Activities of Gold Nanoparticles Synthesized from Cyclopia genistoides (Honeybush) Extracts

et al. 2023

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Synthesis of gold nanoparticles (AuNPs) using phytochemicals has become tremendously prominent in biomedical applications because of its enhanced bioactivity and biocompatibility. In this study, water extracts from the leaves of Cyclopia genistoides (C. genistoides), commonly known as honeybush (HB), were used to synthesize honeybush gold nanoparticles (HB-AuNPs). The HB water extracts (HBE) served as both reducing and capping agents in the synthesis of HB-AuNPs. The HB-AuNPs were characterized by UV–Vis spectrophotometry, dynamic light scattering (DLS), and transmission electron microscopy (TEM). The cytotoxicity and apoptotic effects of the HBE and HB-AuNPs, alone and in combination with doxorubicin (Dox), were examined against various human cell lines. Spherical-shaped HB-AuNPs with a hydrodynamic diameter range of 63 to 121 nm were produced. The HB-AuNPs conferred selective cytotoxicity against colon (Caco-2), breast (MCF-7), and prostate (PC-3) cancer cells and did not display any cytotoxicity to non-cancerous skin fibroblast (KMST-6) and human embryonic kidney (HEK)-293 cells. Moreover, co-treatment of Caco-2 cells with HB-AuNPs and Dox (at non-toxic concentrations) significantly enhanced the anti-cancer effects of Dox towards the Caco-2 cells. Furthermore, it was demonstrated that HB-AuNPs induced PC-3 cell death through apoptosis. Further studies are warranted to elucidate the mechanisms by which the HB-AuNPs influence cell death when used alone or in combination with drugs, as well as the type of phytochemicals involved in AuNPs synthesis and activity.

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Effect of Reaction Time and Stability Properties of Gold Nanoparticles Synthesized by <i>p</i>-Aminobenzoic Acid and <i>p</i>-Aminosalicylic Acid

Cited by 8 publications

References 24 publications

UV–vis Study on β‐Cyclodextrin as Dual Function for Synthesis AgNPs and Antibacterial Application

UV–vis Study on β‐Cyclodextrin as Dual Function for Synthesis AgNPs and Antibacterial Application

Development of a Rapid and Sensitive Probe for Colorimetric Detection of Ni<sup>2+</sup> Ion in Water Sample by β-Cyclodextrin Stabilized Silver Nanoparticles

Anticancer and Drug-Sensitizing Activities of Gold Nanoparticles Synthesized from Cyclopia genistoides (Honeybush) Extracts

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