Synthesis and Characterization of Nanogold-Nanosilver Cluster Diameter Using UV-Visible Instruments and TEM Electron Microscope Transform Instruments

Taufikurohmah, Titik; Soepardjo, Djodjok; Rusmini,; Armadianto, Hari

doi:10.2991/icracos-19.2020.31

Cited by 5 publications

(5 citation statements)

References 5 publications

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“…In nanosilver synthesis, sodium citrate will serve to provide citrate ions which will form complexes with silver ions [8]. Silver ions with a charge of +1 (Ag + ) will be reduced to nanosilver which has no charge (Ag 0 ).…”

Section: Nanosilver Synthesismentioning

confidence: 99%

Utilization of Nanogold and Nanosilver in Kelor (Moringa Oleifera Lam.) Leaf Extract for Pandemic of Covid-19

Taufikurohmah¹

2022

ijcsrr

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This research has the purpose to determine the characteristics of the synthesis of 20 ppm nanogold using TEM, determine the effect of adding nanogold on the antioxidant activity of Moringa leaves, and determine the best concentration that supports increasing antioxidant activity in Moringa leaves. Nanogold and nanosilver were synthesized using bottom-up methods. The concentrations used for Moringa leaf extract and nanogold were 5, 10, 15, 20, 25, and 30 ppm. The concentration of the nanosilver used is 20 ppm. Nanosilver at a concentration of 20 ppm had the best inhibition of antibacterial activity. Testing of antioxidant activity was carried out using the DPPH method which was analyzed with a UV-Vis spectrophotometer. The results of the TEM nanogold test have a dominant cluster size of 22.17 nm. The best test results for the antioxidant activity of Moringa leaf extract at a concentration of 30 ppm was 60.7258 ppm. The addition of nanogold with a greater concentration of 30 ppm Moringa leaf extract resulted in greater antioxidant activity. The results showed that the best concentration of nanogold as a supporter of antioxidant activity in Moringa leaves was 30 ppm with a percent reduction of 79.288 ppm (very strong category).

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Section: Nanosilver Synthesismentioning

confidence: 99%

Utilization of Nanogold and Nanosilver in Kelor (Moringa Oleifera Lam.) Leaf Extract for Pandemic of Covid-19

Taufikurohmah¹

2022

ijcsrr

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“…This indicates that nanogold was formed in this synthesis. The six nanogold with different concentrations were then characterized using a Transmission Electron Microscope (TEM) [11].…”

Section: Synthesis and Characterization Of Nanogoldmentioning

confidence: 99%

Production and Organoleptic Test of Hand Sanitizer Nanogold, Nanosilver, and Eucalyptus Oil in the Pandemic Covid-19

Zain¹

2022

ijcsrr

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Hand sanitizer is an antiseptic that contains alcohol and other active ingredients that can prevent and inhibit microbial infections. The use of hand sanitizer has increased during the COVID-19 pandemic. Hand sanitizer used continuously can cause damage to the skin because it contains harsh chemicals, such as alcohol and peroxide. Therefore, there needs to be innovation in hand sanitizer during the Covid-19 pandemic, ranging from antioxidants, antimicrobials to antivirals. The purpose of this study was to produce and conduct organoleptic tests on hand sanitizer with the addition of nanogold, nanosilver, and eucalyptus oil. The formulations used in the manufacture of this hand sanitizer have been in accordance with those set by WHO with the addition of the active ingredients nanogold, nanosilver, and eucalyptus oil. The addition of nanogold functions as an antioxidant to keep the skin healthy. Nanosilver and eucalyptus oil function as an antimicrobial to antiviral, which is suitable in the formulation of hand sanitizer during the COVID-19 pandemic. The results of the research at the organoleptic test stage showed that hand sanitizer with the addition of nanogold, nanosilver, and eucalyptus oil were preferred by the panelists with an average value of 3.45 in the color category, 3.95 in the fragrance category, and 3.50 in the absorption level category.

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“…𝑘𝑅 …….2 Dengan nilai: Eg (∞) = 1,3 eV me and mh = 0,25 k = 6,5 [35] Contoh spektrum UV-Vis nanopartikel perak yang disintesis menggunakan bioreduktor ekstrak tumbuhan disajikan pada Gamber 6.…”

Section: Karakterisasi Nanopartikel Perak Menggunakan Spektrofotomete...unclassified

Review Artikel: Sintesis Nanopartikel Perak Menggunakan Bioreduktor Ekstrak Tumbuhan Sebagai Bahan Antioksidan

Oktavia

Sutoyo

2021

UJC

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Abstrak. Review artikel ini ditujukan untuk membahas tentang metode pembuatan nanopartikel perak dan potensi pengaplikasian nanopartikel perak sebagai bahan antioksidan. Berdasarkan hasil review dapat dinyatakan bahwa nanopartikel perak merupakan suatu logam perak yang memiliki ukuran nano. Nanopartikel perak banyak diaplikasikan dalam berbagi bidang, misalnya optik, elektronik, biologi, katalis, kesehatan, pangan, dan lingkungan. Nanopartikel perak dapat dibuat dengan metode top-down maupun bottom-up. Sintesis dengan metode bottom-up dapat dilakukan melalui reaksi reduksi ion Ag+ dengan penambahan pereduktor. Zat yang berperan sebagai zat pereduktor dapat diperoleh dari ekstrak tumbuhan atau yang dikenal dengan bioreduktor. Bioreduktor dapat dibuat dari ekstrak air atau ekstrak alkohol dari berbagai bagian tanaman. Nanopartikel hasil sintesis dikarakterisasi untuk mengetahui karakteristik kimia dengan spektroskopi UV-Vis dan FTIR dan karakteristik fisik dengan TEM dan PSA. Nanopartikel hasil sintesis dengan bioreduktor memiliki potensi sebagai antioksidan, sebab nanopartikel perak mampu mendonorkan elektron valensinya ke radikal bebas dan capping agent dari ekstrak tanaman mampu mendonorkan atom hidrogen ke radikal bebas. Aktivitas antioksidan dapat ditentukan dengan metode DPPH, ABTS dan FRAP. Berdasarkan beberapa penelitian yang telah dilakukan sebelumnya menunjukkan hasil jika nanopartikel yang dihasilkan melalui reaksi reduksi menggunakan bioreduktor memiliki aktivitas antioksidan yang kuat. Hal tersebut yang mendasari banyaknya penelitian mengenai potensi nanopartikel perak sebagai bahan antioksidan. Kata kunci : nanopartikel perak, bioreduktor, ekstrak tumbuhan, antioksidan Abstract. This review article is intended to describe the method of making silver nanoparticles and the potential application of silver nanoparticles as an antioxidant material. Based on the results of the review it can be stated that silver nanoparticles are a silver metal that has a nano size. Silver nanoparticles are widely applied in various fields, such as optics, electronics, biology, catalysts, health, food, and the environment. Silver nanoparticles can be obtained by top-down or bottom-up methods. Synthesis by the bottom-up method can be done through Ag + ion reduction reaction with the addition of a reducing agent. Substances that act as reducing agents can be obtained from plant extracts, known as bioreductors. Bioreductors can be made from water extracts or alcohol extracts from various parts of the plant. Synthesized nanoparticles were characterized to determine chemical characteristics by UV-Vis and FTIR spectroscopy also for physical characteristics with TEM and PSA. Nanoparticles synthesized by bioreductors have potential as antioxidants because silver nanoparticles can donate its valence electrons to free radicals and capping agents from plant extracts can donate hydrogen atoms to free radicals. Antioxidant activity can be determined by DPPH, ABTS and FRAP methods. Based on several studies that have been done previously, the results show that nanoparticles produced through a reduction reaction using bioreductors have strong antioxidant activity. This is the basis of many studies regarding the potential of silver nanoparticles as an antioxidant. Key words: silver nanoparticles, bioreductor, plant ekstract, antioxidant

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Synthesis and Characterization of Nanogold-Nanosilver Cluster Diameter Using UV-Visible Instruments and TEM Electron Microscope Transform Instruments

Cited by 5 publications

References 5 publications

Utilization of Nanogold and Nanosilver in Kelor (Moringa Oleifera Lam.) Leaf Extract for Pandemic of Covid-19

Utilization of Nanogold and Nanosilver in Kelor (Moringa Oleifera Lam.) Leaf Extract for Pandemic of Covid-19

Production and Organoleptic Test of Hand Sanitizer Nanogold, Nanosilver, and Eucalyptus Oil in the Pandemic Covid-19

Review Artikel: Sintesis Nanopartikel Perak Menggunakan Bioreduktor Ekstrak Tumbuhan Sebagai Bahan Antioksidan

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