Department of Chemistry: Recent submissions
Now showing items 21-40 of 2907
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Sintesis Nitrogen-Doped Carbon Dots (N-CDS) dengan Metode Hidrotermal dari Kulit Nangka dan Potensinya Sebagai Antibakteri
(Universitas Sumatera Utara, 2024)This research aims to utilize jackfruit peel waste as a carbon source for synthesizing Carbon Dots (CDs) and Nitrogen-Doped Carbon Dots (N-CDs), as well as to evaluate the antibacterial potential of N-CDs. In the first ... -
Peningkatan Aktivitas Fotokatalitik Titanium Dioksida Termodifikasi Carbon Dots Biji Asam Jawa (Tamarindus Indica.L) sebagai Bahan Pendegradasi Pewarna Naftol Hijau B
(Universitas Sumatera Utara, 2024)The photodegradation ability of titanium dioxide nanoparticles can be increased by the addition of carbon dots from tamarind seeds (Tamarindus indica.L) in degrading green naphthol B synthetic dye. The stages carried out ... -
Sintesis Poliuretan dari Campuran Getah Damar Mata Kucing (Shorea Javanica) dan Peg 400 dengan Toluena Diisosianat (TDI)
(Universitas Sumatera Utara, 2024)The synthesis of polyurethane from Damar mata kucing (Shorea Javanica) and PEG 400 using isocyanate monomer was carried out by reacting the resin resin with 98% formic acid and 30% H2O2, then polyurethane was made by ... -
Efektivitas Karbon Aktif Kulit Biji Kopi Sebagai Adsorben Terhadap Penurunan Kadar Logam Besi (Fe) pada Air Sumur Bor
(Universitas Sumatera Utara, 2024)The material that can be used to make active carbon is coffee bean skin which is still underutilized. This research was carried out to reduce iron (Fe) levels using activated carbon from coffee bean skins with KOH activator ... -
Isolasi dan Identifikasi Golongan Senyawa Flavonoid Serta Uji Aktivitas Antibakteri dari Kulit Batang Kelengkeng (Dimocarpus Longan Lour.)
(Universitas Sumatera Utara, 2024)Flavonoid compounds have been isolated from the bark of longan (Dimocarpus longan Lour.). The isolation stage begins with maceration extraction using methanol solvent. The concentrated methanol extract was partition extracted ... -
Preparasi dan Karakterisasi Komposit Karet Alam (SIR 10)/Karet Stirena Butadiena dengan Pengisi Sepiolite
(Universitas Sumatera Utara, 2024)This study examines the manufacture of natural rubber composites (SIR 10)/styrene butadiene rubber by varying the loading of sepiolite as a filler. The use of filler materials is a strategy to improve the properties of ... -
Pembuatan Membran Selulosa Asetat dengan Penambahan Karbon Aktif dari Ranting Eucalyptus alba sebagai Filter Air dalam Menurunkan Kadar Fe
(Universitas Sumatera Utara, 2024)Eucalyptus alba branches that contain cellulose compounds can be used as natural materials for the production of activated carbon to make membranes. The purpose of this study is to make cellulose acetate membranes with ... -
Penentuan Kadar Logam pada Road Dust Berdasarkan Perbedaan Ukuran Partikel dari Jalan Dr Mansyur
(Universitas Sumatera Utara, 2024)This research aims to determine the concentration of heavy metals in road dust sediment with specific particle sizes at the Dr. Mansyur street location. The study was conducted by sieving road dust into particle sizes ... -
Peningkatan Aktivitas Fotokatalitik Zno Termodifikasi N-Doped Carbon Dots Biji Asam Jawa (Tamarindus Indica L.) dalam Mendegradasi Metilen Biru
(Universitas Sumatera Utara, 2024)The rapid development of the textile industry sector is an environmental problem that causes pollution by liquid dye waste such as methylene blue (MB) dye. Therefore, effective efforts are needed to reduce MB levels, namely ... -
Isolasi dan Identifikasi Golongan Senyawa Flavonoida dari Kulit Batang PohonTrembesi (Samanea Saman (Jacq.) Merr)
(Universitas Sumatera Utara, 2024)Isolation and identification of flavonoid compound groups from the bark of rain tree (samanea saman (jacq.) Merr) had been carried out through the stages of maceration extraction using methanol solvent. Extraction was ... -
Isolasi dan Identifikasi Golongan Senyawa Flavonoida dari Kulit Batang Landoyung (Litsea Cubeba (Lour.) Pers.)
(Universitas Sumatera Utara, 2024)Isolation and identification of flavonoid compound groups from landoyung bark (Litsea cubeba (Lour.) Pers.) had been carried out through maceration extraction stages with methanol solvent. The methanol extract was concentrated ... -
Isolasi dan Identifikasi Golongan Senyawa Flavonoida dari Kulit Batang Mahang Damar (Macaranga Triloba (Thunb.) Mull.Arg.)
(Universitas Sumatera Utara, 2024)Isolation and identification of flavonoid compounds from stem bark of mahang damar (Macaranga triloba (Thunb.) Mull.Arg.) had been carried out. Isolation was carried out through maceration extraction using methanol and was ... -
Isolasi dan Identifikasi Golongan Senyawa Flavonoida dari Daun Mahang Biru (Macaranga Heynei I. M. Johnst)
(Universitas Sumatera Utara, 2024)Isolation and identification of the flavonoid compound from mahang biru (Macaranga heynei I. M. Johnst.) leaves had been done by maceration extraction technique with methanol solvent. Methanol solid extract was re extracted ... -
Isolasi dan Identifikasi Golongan Senyawa Flavonoida dari Kulit Batang Glodokan (Polyalthia longifolia (Sonn.) Benth & Hook. F Ex Thwaites)
(Universitas Sumatera Utara, 2024)Isolation and identification of flavonoids compound from the bark of glodokan (Polyalthia longifolia (Sonn.) Benth & Hook.F ex Thwaites) had been carried out through the maceration extraction stage used methanol solvent. ... -
Pengaruh Variasi Massa Katalis Coal Fly Ash dalam Proses Perengkahan Katalitik Minyak Jelantah Menjadi Bahan Bakar Hidrokarbon
(Universitas Sumatera Utara, 2024)Petroleum reserves in the world are dwindling due to a significant increase in population and fossil oil which has non-renewable properties so that the development of environmentally friendly alternative fuels is needed ... -
Isolasi dan Identifikasi Golongan Senyawa Flavonoida dari Daun Turi Merah (Sesbania Grandiflora (L.) Poir)
(Universitas Sumatera Utara, 2024)Turi merah (Sesbania grandiflora (L.) Poir) is a fern plant that is widely used by the general public for natural treatment, such as nausea, diarrhea, strep throat and others. The isolation and identification of flavonoid ... -
Karakterisasi Paduan EPDM/NR SIR-20 dengan Pengisi Serbuk Cangkang Tiram (Crassostrea gigas) sebagai Peredam Benturan Pintu Kendaraan (Weather Strip)
(Universitas Sumatera Utara, 2024)Research on composites from the EPDM/NR SIR-20 alloy with the addition of oyster shell powder (Crassostrea gigas) as a filler material which is applied as a vehicle door impact absorber (weather strip). Making weather ... -
Karakteristik Sensor Berbasis Kitosan/Tembaga II Oksida (CuO) dalam Mendeteksi Konsentrasi Aseton dengan Amperometri
(Universitas Sumatera Utara, 2024)Research has been done on the characteristics of sensors based on chitosan/Copper II Oxide (CuO) in detecting acetone concentrations using the amperometric method. The effect of copper II oxide addition on chitosan film ... -
Sensitivitas Elektroda Termodifikasi Kitosan/Grafena Oksida Tereduksi/Serium Oksida Dalam Mendeteksi Konsentrasi Epinefrin
(Universitas Sumatera Utara, 2024)In this research, chitosan/reduced graphene oxide (rGO)/cerium oxide (CeO2) modified electrodes have been successful in detecting epinephrine using the cyclic voltammetry method. The addition of cerium oxide is considered ... -
Karakterisasi Komposit dari Paduan EPDM/NR SIR-20 dengan Pengisi Serbuk Tanah Liat (Clay) sebagai Peredam Benturan Pintu Kendaraan (Weather Strip)
(Universitas Sumatera Utara, 2024)Composite research of EPDM/NR SIR-20 alloy with the addition of clay powder as a filler used as a car door impact absorber (weather strip). The weather strip was prepared by mixing SIR-20 natural rubber with EPDM synthetic ...