Garuda - Garba Rujukan Digital

p-Index From 2021 - 2026

0.92

P-Index

This Author published in this journals

All Journal CAKRA KIMIA (Indonesian E-Journal of Applied Chemistry) Alchemy : Journal of Chemistry Teknosains: Media Informasi Sains dan Teknologi Jurnal Sains Teh dan Kina Al-Kimia Chimica et Natura Acta Walisongo Journal of Chemistry Jurnal Kesehatan Panrita Husada Jurnal Fisika dan Terapannya Amina

Aisyah Aisyah

Jurusan Kimia, Fakultas Sains Dan Teknologi, Univesitas Islam Negeri Alauddin Makassar, Makassar, Indonesia, 92118

Author-ID : 4137526

Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Electrical & Electronics Engineering Energy Environmental Science Health Professions Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Physics

Published : 27 Documents Claim Missing Document

Claim Missing Document

Articles

1 2 3

Sintesis Etil Ester Dari Minyak Biji Kemiri (Aleurites molluccana) Menggunakan Metode Ultrasonokimia Yunizar AL; Aisyah Aisyah; Suriani Suriani
Al-Kimia Vol 3 No 2 (2015): December
Publisher : Study Program of Chemistry - Alauddin State Islamic University of Makassar

The availability of the fuel oil in the world are declining, so that alternative energy is needed to meet the needs of the fuel. One of the alternative energy is biodiesel (ethyl/methyl ester). The research aimed to determine the optimal conversion value of ethyl ester, to identify ester components and their concentration. The biodiesel was produced from candlenut oil (Aleurites mollucana) ethanol by the ratio of 1:6 using 0.5% KOH catalyst which reacted by utilizing ultrasonic wave (47 kHz) for 45, 60 and 75 minutes. Biodiesel conversion value were 3.9%, 1.6% and 1.2% respectively. The biodiesel obtained then were analyzed by FTIR and result the pattern of fatty acid ethyl esters. In addition, analysis by GC-MS revealed the concentration under variation times of ethyl palmitate, ethyl linoleic, ethyl oleic and ethyl stearic from variation time 45, 60 and 75 minutes. They were 6.34%, 1.76% and 1.56%), (25.94%, 6.46% and 7.46%), (31.42%, 8.17% and 8.79%) and 2.13%.

Fitoremediasi Tanaman Akar Wangi (Vetiver zizanioides) Terhadap Tanah Tercemar Logam Kadmium (Cd) Pada Lahan TPA Tamangapa Antang Makassar Alfia Patandungan; Syamsidar HS; Aisyah Aisyah Aisyah
Al-Kimia Vol 4 No 2 (2016): December
Publisher : Study Program of Chemistry - Alauddin State Islamic University of Makassar

One example of soil contamination on land landfill is (TPA) Makassar. The method of prevention is phytoremediation of the contaminated land. This study examined the ability of the plant will vetiver (Vetiver zizanioides) in reducing the levels of Cd in the soil. To increase the potential of these plants to remediate Cd, the soil where the plants grow is combined with compost in which bacteria within the compost might improve the absorption of Cd. Planting medium used is pure soil and compost from Tamangapa Makassar. Research carried out for 28 days with a variation of the study. The composition of the media that the contaminated soil (TT) metal kadmium (Cd) and compost (K) with a ratio of 100% (TT): 0 K, 5 (TT): 1 (K), 4.5 (TT): 1.5 (K) and 4 (TT): 2 (K). The results shwed that vetiver plants were able to absorb Cd of 0,298 mg/Kg so it can be concluded that the composition of the planting medium with a combination of compost less significant because the combination of the contaminated soil with compost are less precise in helping vetiver plants accumulate or reduce metal pollution cadmium in contaminated soil Tamangapa Antang Makassar.

Karakterisasi Zat Warna Tomat (Solanum lycopersicum) FRAKSI Metanol:N-Heksan Sebagai Photosensitizer Pada Dye Sensitized Solar Cell (DSSC) Nur Hasbi Wahab; Aisyah Aisyah Aisyah; Suriani Suriani
Al-Kimia Vol 4 No 2 (2016): December
Publisher : Study Program of Chemistry - Alauddin State Islamic University of Makassar

One of the potential alternative energy to be developed to overcome energy crisis in the world is an DSSC. This research aimed to make a series of Dye Sensitized Solar Cell (DSSC) using an organic dye from crude extract of tomato as a photosensitizer. The dye obtained from the maceration by of ultrasonic waves using methanol. Separation was done by KKCV using eluent of methanol: n-hexane (3: 7, 1: 1, 7: 3). The best efficiency value (Ƞ) in the series of DSSC that results from the fraction methanol: n-hexane (1:1) was 0.0249%. Characterization using spectrophotometer UV-Vis showed a maximum absorption at wavelength of 447 nm which is the absorption of carotene compound. FTIR analysis showed that samples generally have -CH2-, C=C and OH strecth wich are the characteristic of carotene compound. GCMS analysis showed that dye components which estimated is dihydroxy lycopene of the retention time 10.93 with a molecular ion peak at m/z 91.

Produksi Etil Ester Dari Minyak Dedak Padi (Oryza Sativa) Menggunakan Reaktor Ultrasonik Aisyah Aisyah; Riskayanti Riskayanti; Iin Novianty; Asriyani Ilyas; Sjamsiah Sjamsiah; Sitti Chadijah
Al-Kimia Vol 6 No 1 (2018): JUNE
Publisher : Study Program of Chemistry - Alauddin State Islamic University of Makassar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24252/al-kimia.v6i1.3036

Indonesia as the third largest grain producer in the world produces large amounts of bran. High contain Free Fatty Acid (FFA) in rice bran oil causes it can be converted into the fatty acid ethyl esters (biodiesel) by esterification and transesterification methods. The rice bran oil was obtained by rice bran extraction using n-hexane. The esterification process was catalyzed by HCl. In this study, the transesterification process to convert triglycerides into ethyl esters (biodiesel) was conducted by the addition of KOH as a neutralizer and a catalyst Oil and ethanol by ratio 1:6 using 0,5% KOH as catalysator were reacted by utilizing 47 kHz ultrasonic wave for 45, 60 and 75 minutes. Biodiesel conversion value obtained were 49,23%; 70,55% and 52,04% respectively. Biodiesel product spectrum was analyzed using FTIR and GCMS instrument. The density, viscosity and flash point is also measured. FTIR analysis on all variations give similar data spectrum, where the ethyl ester products are characterized by typical bands at specific frequencies such as -C=O; -C-C; -C-H (sp3) and = C-H (sp2) stretch. Based on the data from GCMS spectrum, the product components are ethyl palmitate, ethyl linoleate, ethyl stearate and ethyl oleate.

Pengaruh Kandungan Senyawa pada Ekstrak Daun Ketapang n-Heksan, Etil Asetat, Metanol dan Campuran Terhadap Nilai Efisiensi Dye Sensitized Solar Cell (DSSC) Aisyah Aisyah; Kurnia Arini Putri; Suriani Suriani; Iswadi Iswadi
Al-Kimia Vol 5 No 2 (2017): December
Publisher : Study Program of Chemistry - Alauddin State Islamic University of Makassar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24252/al-kimia.v5i2.3856

The needs of electrical energy that increase year by year cause electrical energy crisis. Alternative energy sources which are potential to be developed as a substitute of fossil fuels are organic solar cells or DSSC (Dye Sensitized Solar Cell). The purpose of this study is to determine the value of efficiency resulting from Ketapang leaf extract and to determine the effect of compound content in Ketapang leaf extract toward the value of DSSC efficiency. This study investigate the efficiency value of the DSSC which are senzitized by the N-hexane, ethyl acetate, methanol extract of the Ketapang leaf and the mixture extract. The compounds from each axtract are characterized used UV-Vis and FTIR. The measurement results of the efficiency value from n-hexane of Ketapang leaf extract, ethyl acetate, methanol and the mixture were respectively 0.0051%, 0.09%, 0.12% and 0.22%. The results of UV-Vis characterization with maximum wavelength were respectively 667 nm, 665.9 nm, 665.9 nm and 209 nm. The FTIR identified an auxchrome group such as -OH, C-N, -NH, and C-O as well as chromophore groups such as C=O and C=C. These data support that the existence of flavonoid and alcaloid compound in the mixture extract generate significant efficiency value.

The Photosensitizer from the Basic Dye Extract of the Skin Fruit of Eggplant (Solanum melongena L.) Indah Ayu Risnah; Aisyah Aisyah; Iswadi Iswadi; Jawiana Saokani
Al-Kimia Vol 6 No 1 (2018): JUNE
Publisher : Study Program of Chemistry - Alauddin State Islamic University of Makassar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24252/al-kimia.v6i1.4826

The latest generation of solar cell that utilizes dye from plants as a photosensitizer is Dye-Sensitized Solar Cell (DSSC). The dye from Solanum melongena L. is one of the potential photosensitizers due to its chemical and physical characteristics. This study aims to determine these characteristics as well as its efficiency value in DSSC. The dye was obtained by ultrasonic extraction in 1% HCl methanol solution. The crude extract of dye was treated in acid and basic condition and then separated by vacuum gravitation chromatography in a way that the polarity was increased. The results were a variety of dyes according to their polarity. The dye then applied in DSSC as the photosensitizers. The highest conversion value was 0.0211%, performed by the dye in pH 8 solution. The characteristic of this extract was identified by UV-Vis, FTIR, and GC-MS. All the spectral data indicated that the main component which responsible for this efficiency was pelargonidin.

PENGARUH KONSENTRASI PIGMEN WARNA DARI DAUN PACAR KUKU (Lawsonia inermis L.) TERHADAP EFISIENSI DYE SENSITIZED SOLAR CELL (DSSC) Yulia Kirana Lahsmin; Iswadi Iswadi; Aisyah Aisyah; Rahmaniah Rahmaniah
Teknosains Vol 12 No 2 (2018): JULI
Publisher : Fakultas Sains dan Teknologi Universitas Islam Negeri Alauddin Makassar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24252/teknosains.v12i2.7598

There was research on Dye Sensitized Solar Cell to determine the effect of concentration Henna (Lawsonia inermis L.) leaves pigments on the efficiency of DSSC. The solar cell is made with a sandwich structure, the dye used is made in three variations of concentration is concentration of 10%, 20% and 30%. TiO2 deposition on ITO glass made using the method of doctor blade with a cell area of 2.25 cm2 for 24 hours of immersion in the dye. Based on the results of measurements of IV by using a source of light, DSSC efficiency for dye obtained with a concentration of 30% which is 0.003366667%, to dye with a concentration of 20% is 0.0033264% and to dye with a concentration of 10% which is 0.000312%. This research can be concluded that the higher the concentration of dye used, the higher the efficiency of DSSC generated.

PENGARUH KANDUNGAN SENYAWA PADA EKSTRAK DAUN JATI (Tectona grandis) TERHADAP NILAI EFISIENSI DYE SENSITIZED SOLAR CELL (DSSC) Muharam Bapa Lasang; Aisyah Aisyah; Iswadi Iswadi; Andi Nurfitriani Abu Bakar
Teknosains Vol 13 No 1 (2019): JANUARI
Publisher : Fakultas Sains dan Teknologi Universitas Islam Negeri Alauddin Makassar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24252/teknosains.v13i1.9615

Abstrak Dye Sensitized Solar Cell (DSSC) merupakan salah satu sumber energi alternatif yang berkelanjutan dan ramah lingkungan. Beberapa zat warna dari tumbuhan lokal Indonesia diketahui berpotensi sebagai sensitizer. Penelitian ini mengevaluasi kemampuan komponen zat warna dari daun jati berikatan dengan semikonduktor TiO2 untuk mengkonversi energi matahari menjadi energi listrik. Daun jati diekstrak dengan maserasi menggunakan pelarut n-heksan etil asetat dan metanol. Nilai efisiensi DSSC diukur dari ketiga ekstrak ditambah dengan campuran dari ketiga ekstrak tersebut. Data spektrum zat warna dimonitor menggunakan spektrofotometer FTIR dan UV-VIS. Data spektrum menunjukkan adanya senyawa flavonoid, alkaloid dan terpenoid dalam ekstrak campuran yang menghasilkan serapan panjang gelombang maksimal khas pada daerah 500-650 nm dan 269 nm. Nilai efisiensi DSSC diukur dari ketiga ekstrak dan campuran dari ketiga ekstrak tersebut. Nilai efisiensi dari ke empat sampel berturut-turut yaitu 0.0068%, 0.03%, 0.06%, dan 0.34%. Hal ini menunjukkan bahwa semakin banyak kandungan zat warna yang terikat pada TiO2 semakin tinggi nilai efisiensi DSSC.

PERBANDINGAN EFISIENSI SEL FOTOVOLTAIK BERBASIS DSSC DARI EKSTRAK ZAT WARNA SEGAR DAN KERING TUMBUHAN SECANG, TARUM DAN PACAR KUKU Iswadi Ibrahim Patunrengi; Aisyah Aisyah
Teknosains Vol 14 No 1 (2020): JANUARI
Publisher : Fakultas Sains dan Teknologi Universitas Islam Negeri Alauddin Makassar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24252/teknosains.v14i1.12938

Solar energy is the most abundance energy source in the world. However, it is used only limited amount for energy conversion. Photovoltaics system is one method to harvest energy from the sun and convert it to electricity. In this research, the fresh and dried extract of organic dyes from Secang wood; Tarum leaves (Indigofera tinctoria) and Pacar Kuku leaves (lawsonia inermis L) are used as a sensitizer in solar cells. Results shows that efficiency of photovoltaic cells from fresh extract are higher than the dried one. The efficiency of fresh dyes from Secang, Tarum and Pacar Kuku are 1,26%; 0,74% and 0,21% respectively. Meanwhile, efficiency of dried extracts are 1,26%; 0,74% and 0,21% respectively.

STUDI AWAL PEMANFAATAN EKSTRAK WARNA TANAMAN TARUM (Indigofera tinctoria) SEBAGAI DYE UNTUK DSSC Iswadi Ibrahim Patunrengi; Aisyah Aisyah; Achmad Nasyori; Awaluddin Iwan Perdana
Teknosains Vol 15 No 1 (2021): Januari-April
Publisher : Fakultas Sains dan Teknologi Universitas Islam Negeri Alauddin Makassar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24252/teknosains.v15i1.17611

Sel surya berbasis sensitiser pewarna (DSSC), telah mendapat perhatian besar untuk diteliti karena mudah untuk disintesis dan fabrikasi, proses pembuatannya memerlukan biaya rendah, dan bahannya melimpah di alam. Pewarna alami yang diekstraksi dari tanaman Indigofera tinctoria dipelajari potensi penggunaannya sebagai sensitiser untuk DSSC (Dye-Sensitized Solar Cell). Dalam penelitian ini, pewarna diekstraksi dari daun dengan tiga jenis ekstrak yang berbeda yaitu ekstrak segar, kering dan tradisional. TiO2 yang digunakan sebagai bahan aktif diaplikasikan dengan menggunakan metode Doctor Blade. Pengukuran tegangan dan arus dilakukan di luar ruangan di bawah iradiasi matahari. Spektrum UV-Vis pewarna menunjukkan bahwa ketiga sampel menunjukkan jumlah puncak serapan yang berbeda tetapi memiliki panjang gelombang yang sama di wilayah sekitar 644 nm. Hasil penelitian menunjukkan bahwa nilai efisiensi PCE sampel segar, kering dan tradisional adalah masing-masing sebesar 0,6%; 0,3%; 0,1%.

Co-Authors A. Reskianti Wardani Abd. Rasyid Syamsuri Achmad Nasyori Afandi, Irwan Alfia Patandungan Aminuddin Baharuddin Andi Nur Fitriani Abubakar Andi Nurfitriani Abu Bakar Arfiani Nur Asdinar Asriani Ilyas Asriyani Ilyas Awaluddin Iwan Perdana Didin Mujahidin Dyah Wulandhari Sulthan Firnanelty, Firnanelty Hajrah Hajrah Heri Heriyono Holyness Nurdin Singadimedja Iin Novianty Ilmi Wahyuni Indah Ayu Risnah Indah Ayu Risnah Irnaningsih Jawiana Saokani Jawiana Saokani Kurnia Arini Putri Maria Cecilia Lezama Escalante Maswati Baharuddin Maswati Baharuddin Melati Masri Muh. Said L Muh. Taufiq M. Bintang Muharam Bapa Lasang Nila Berghuis Tamaela, Nila Berghuis Nur Hasbi Wahab Nurlina Nurlina Nurul FA Patunrengi, Iswadi Ibrahim Rahmaniah Rahmaniah Rahmatia Syam Rahmawati Aziz Rahmiani Gani Riskayanti Riskayanti Saadatul Husna Sappewali Sappewali Siti Zubaidah Sitti Chadijah Sjamsiah, Sjamsiah St Chadijah Suriani Suriani Suriani Suriani Suriani Suriani Syamsidar HS Syarifah Rabiatul Adawiah Titik Andriani Ummi Zahra, Ummi Yana Maolana Syah Yulia Kirana Lahsmin Yunizar AL

Title

Found 27 Documents
Search

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Title Search

Found 27 Documents Search

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Title

Found 27 Documents
Search