MARC details
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02698nam a22001817a 4500 |
| 003 - CONTROL NUMBER IDENTIFIER |
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OSt |
| 005 - DATE AND TIME OF LATEST TRANSACTION |
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20240910093050.0 |
| 008 - FIXED-LENGTH DATA ELEMENTS--GENERAL INFORMATION |
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240910b |||||||| |||| 00| 0 eng d |
| 040 ## - CATALOGING SOURCE |
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| Original cataloging agency |
MMSU |
| Transcribing agency |
ULS |
| 100 ## - MAIN ENTRY--PERSONAL NAME |
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| Personal name |
Berenguer, Marian Angle S. |
| 245 ## - TITLE STATEMENT |
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| Title |
Green synthesis of silver nanoparticles using mandarin orange (citrus reticulata) peel extract / |
| Statement of responsibility, etc. |
Marian Angle S. Berenguer |
| 260 ## - PUBLICATION, DISTRIBUTION, ETC. |
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| Place of publication, distribution, etc. |
City of Batac : |
| Name of publisher, distributor, etc. |
MMSU, |
| Date of publication, distribution, etc. |
2024. |
| 300 ## - PHYSICAL DESCRIPTION |
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| Extent |
xiv, 58 leaves : |
| Dimensions |
29 cm. |
| 500 ## - GENERAL NOTE |
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| General note |
UTHESIS (Bachelor of Science in Ceramic Engineering) |
| 504 ## - BIBLIOGRAPHY, ETC. NOTE |
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| Bibliography, etc. note |
Bibliography : leaves 36-39 |
| 520 ## - SUMMARY, ETC. |
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| Summary, etc. |
There are several methods for synthesizing silver nanoparticles (AgNPs), <br/>including chemical reduction, microemulsion, sonochemical, sol-gel, and <br/>electrochemical techniques. However, these chemical methods can be toxic and <br/>expensive. In contrast, green synthesis using plant extracts, such as mandarin orange <br/>peel (MOP) extract, offers a non-toxic, eco-friendly, and cost-effective alternative for <br/>producing AgNPs. Thus, there is a need for "green synthesis" of nanoparticles, this <br/>method avoids the use of high temperatures, pressures, energy, and toxic chemicals. <br/>Silver nanoparticles are synthesized by the reduction of silver ions to neutral silver <br/>atoms. This is achieved by the reduction of silver ions by a reducing agent. In this <br/>study, silver nanoparticles (AgNPs) were synthesized through a green synthesis <br/>method using the extracts from Mandarin Orange Peel (MOP) that acts as a reducing <br/>agent. The effects of reaction time on the nanoparticles were investigated. Four (4) <br/>treatments (reaction times) were conducted, each with three (3) replicates. Following <br/>the reaction times, the samples underwent a centrifugation process to separate the <br/>particles from the solution, and then it was characterized and analyzed utilizing XRF <br/>and SEM technique. The pH level 4.9 adhered to the standard acidity criteria, and the <br/>maximum absorption peak wavelength which is 390nm of the MOP extract was <br/>within the acceptable range. The visible color change from light yellow to dark brown <br/>indicated the rapid formation and nucleation of silver nanoparticles. The percentage <br/>yield extracted from the solution obtained was low, having the highest yield of <br/>11.80% only. Based on the XRF data analysis, (Ag) was not detected due to the <br/>detection limits of the instrument. SEM revealed that the synthesized AgNPs <br/>exhibited a structure consisting of spherical and cubical structures and average sizes <br/>fall within the standard nanoparticles range of 1-100 nm. The smallest AgNPs, <br/>averaging 33.59 nm in size, were synthesized through a 24-hour reaction. |
| 942 ## - ADDED ENTRY ELEMENTS (KOHA) |
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| Source of classification or shelving scheme |
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| Koha item type |
Thesis/Dissertation |