Telah dilakukan sintesis nanopartikel perak menggunakan bioreduktor ekstrak daun pucuk idat (Cratoxlum glaucum) menggunakan metode iradiasi microwave. Sintesis dilakukan dengan mereaksikan ekstrak daun pucuk idat dengan larutan perak nitrat pada perbandingan komposisi 1:2. Variabel penelitian ini yaitu variasi konsentrasi perak nitrat dan waktu sintesis. Berdasarkan hasil analisis UV-Vis menunjukkan adanya serapan panjang gelombang maksimum yang merupakan karakteristik pembentukan nanopartikel perak pada panjang gelombang 398,8 nm dengan konsentrasi AgNO3 0,5 mM dan waktu sintesis 120 detik. Analisis ukuran partikel menunjukkan distribusi ukuran partikel sebanyak 10% berukuran 92,5 nm dan secara keseluruhan berukuran 544,1 nm. Hasil uji aktivitas antibakteri menunjukkan nanopartikel perak memiliki sifat antibakteri yang kuat terhadap bakteri E.coli dan S.aureus
Polymer electrolyte DSSC is one component of the application can convert solar energy into electrical energy. The polymer electrolyte can be synthesized from brown seaweed Turbinaria sp. However, the optimization of alginate extraction has not been widely carried out, so the aim of this study was to determine the optimum conditions for variations in the concentration of Na2CO3 (3%, 5%, 7%) in extracts from Turbinaria sp as raw material for polymer electrolyte synthesis for DSSC. Alginate optimum extraction results known by percentage yield, moisture content and functional groups using FTIR analysis. The optimum conditions for alginate extraction from Turbinaria sp are Na2CO3 5% and a temperature of 60 oC with a yield of 23.81% and a moisture content of 8.1%. FTIR results also indicate the intensity of the strongest mannuronic seen at 822cm-1 wave numbers.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.