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All Journal Matematika dan Sains Chemistry and Materials Prosiding Seminar Nasional Pengabdian Kepada Masyarakat PERDULI: Jurnal Pengabdian kepada Masyarakat Mitra Teras: Jurnal Terapan Pengabdian Masyarakat ALENA : Journal of Elementary Education

Yusmaniar

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Author-ID : 426201

Religion Humanities Biochemistry, Genetics & Molecular Biology Chemistry Economics, Econometrics & Finance Education Energy Environmental Science Materials Science & Nanotechnology Mathematics Public Health Social Sciences Other

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Synthesis and Characterization of Zero Valent Iron Prepared Using Green Synthesis Method Devi Indrawati Syafei; Sahid Hidayat; Yusmaniar
Chemistry and Materials Vol. 1 No. 2 (2022)
Publisher : Pusat Inovasi Sains

This research was conducted to develop a green synthesis method for zero valent iron (ZVI) preparation. The ZVI was synthesized by reacting FeCl2 with polyphenols extracted from kepok banana peels. This polyphenol extraction process was carried out using three different solvents, namely: water, chloroform, and ethyl acetate. Gas chromatography mass spectroscopy test showed three main phenolic compounds contained in the banana peel extract, namely: 2-methoxy-4-vinylphenol, 4-methoxy-2-vinylphenol, and 2-methoxy-5-vinylphenol. The optimum composition of FeCl2 and polyphenol was 3:2. Fourier transform infra red spectroscopy data confirmed that the synthesized ZVI contains organic compounds having –OH and C=O groups which are assumed to be capping agents that can maintain stability. This has also been supported by the results of the energy dispersive X-ray analysis where there are carbon atoms (C) and oxygen atoms (O) in ZVI. The ZVI particle size was uneven and form a compact solid. The largest particle size distribution of ZVI is in the range of 234.49 nm - 407.49 nm with the average size of ZVI beings 616.26 nm. The results of the XRD analysis have also confirmed the formation of a simple cubic ZVI with fine crystallite size of ca 26.64 nm.

Preparation of Polyaniline/Polypyrrole Thin Films as Electrode in Salt Water Dechlorination Maryanti; Yusmaniar
Chemistry and Materials Vol. 1 No. 1 (2022)
Publisher : Pusat Inovasi Sains

Chlorine is a chemical element that is widely used in daily life that require for dechlorination process to prevent the environment. One method that can be used to treat chlorine waste is through dechlorination. During the dechlorination process, electrodes that chemically stable properties are used. This study aims to test the dechlorination of polyaniline (PANI), polypyrrole (PPy), and various compositions of PANI/PPy composite. FTIR shows related functional groups found in PANI, PPy, and PANI/PPy. XRD shows that the PANI formed was in the semicrystalline phase, while PPy was in the amorphous phase. The conductivity test shows that the PANI sample has the highest conductancy value compared to the PPy or PANI/PPy samples. PANI/PPy with composition ratio of 75/25 had the highest difference in conductance values compared to other composites. The highest dechlorination efficiency value occurred in PANI at a voltage of 1.8 V, which was 1.9%. Meanwhile, in PANI/PPy composite, the highest dechlorination efficiency value came from PANI/PPy 75/25, which was 0.97%.

Synthesis of Modified Polyvinyl Pyrrolidone (PVP) Silver Nanoparticles Using Soursop (Annona muricata Linn) Leaf Extract and Its Application as a Heavy Metal Colorimetric Sensor Yussi Pratiwi; Rizky Amelia; Yusmaniar
Chemistry and Materials Vol. 3 No. 1 (2024)
Publisher : Pusat Inovasi Sains

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56425/cma.v3i1.66

This study aims to analyze the characteristics and performance of silver nanoparticles (AgNP) synthesized using soursop leaf extract bioreductor modified with the addition of polyvinyl pyrrolidone (PVP) stabilizer as a colorimetric sensor for heavy metal ions. The synthesis of silver nanoparticles was carried out by reducing AgNO3 using soursop leaf extract (Annona muricata Linn) bioreductor modified with the addition of PVP as stabilizer. The results showed that the optimum synthesis volume ratio of AgNP synthesis was 0.7 mL of soursop leaf extract: 10 mL AgNO3 with the addition of 3% PVP stabilizer. The formation of AgNP was characterized by a change in the color of the solution from yellow to brownish with a surface plasmon resonance peak at a maximum wavelength of 438 nm. Fourier-transform infrared spectroscopy studies showed hydroxyl groups (-OH) and carbonyl groups (C=O) play a role in the reduction process of silver ions. Particle size analysis results demonstrated an average particle size of 71.5 nm with a polydispersity index value of 0.364. The results of the colorimetric analysis showed that the synthesized AgNPs proved to be highly selective towards Cu metal ions.

Co-Authors Afrizal Afrizal Alannasir, wahyullah Almira Talitha Hasna Alysa Hestaviana Andini Lestari Syah Putri Anisa Hanum Arinda Putri Nurhaliza Deby Virgiawan Devi Indrawati Syafei Diska Ariani Silalahi Madinah Fatma Maria Paristiowati Maryanti Masykur Falah Naidi MUHAMMAD ILHAM Noviantika Nurul Nabillah Nur Afni Rasikha Ulhaq Ratna Choiryana Retno Dewi Kusumaningsih Rizky Amelia Sahid Hidayat Setia Budi Syifa Nur Muttaqin Yussi Pratiwi

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