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All Journal VALENSI JURNAL KIMIA SAINS DAN APLIKASI Biology, Medicine, & Natural Product Chemistry ALCHEMY Jurnal Penelitian Kimia JURNAL INFORMATIKA Aplikasia: Jurnal Aplikasi Ilmu-Ilmu Agama JKPK (Jurnal Kimia dan Pendidikan Kimia) Integrated Lab Journal Perspektif Indonesian Journal of Mathematics and Natural Sciences
Sudarlin -
Department Of Chemistry, Faculty Of Science And Technology, Universitas Islam Negeri Sunan Kalijaga Yogyakarta
Religion Agriculture, Biological Sciences & Forestry Humanities Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Computer Science & IT Control & Systems Engineering Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Materials Science & Nanotechnology Medicine & Pharmacology Public Health Social Sciences Other

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Polimerisasi Eugenol Minyak Daun Cengkeh Hasil Redistilasi, Ekstraksi, dan Fraksinasi Menggunakan Katalis Asam Sulfat Pekat Sudarlin Sudarlin; Winarto Haryadi
Jurnal Kimia Valensi Jurnal Kimia VALENSI Volume 3, No. 1, Mei 2017
Publisher : Syarif Hidayatullah State Islamic University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (764.431 KB) | DOI: 10.15408/jkv.v3i1.4685

Abstract

Polymerization of purified eugenol from clove leaf oil using concentrated sulfuric acid as catalyst has been done in this research. Clove leaf oil was purified by vacuum redistillation, acid-base extraction, and vacuum fractionation to yield eugenol. The eugenol was polymerized with concentrated sulfuric acid in ratio 1: 2. Polyeugenol from eugenol of clove leaf oil resulted from redistillation, extraction, and fractionation is in solid form (yield: 88.14%); from redistillation and extraction is also in solid form (yield: 86.15%); from redistillation clove leaf oil is in gel form (yield: 100.29%). Structure of polyeugenol was determined by infrared spectrophotometer and characterized by thin layer chromatography (TLC). Molecular weight of the product was calculated by viscometry method.DOI: http://dx.doi.org/10.15408/jkv.v0i0.4685
Computational Chemical Study of Pigment of Mangosteen (Garcinia mangostana) Rind Extract as Dye Compound in Dye-Sensitized Solar Cell (DSSC) Didik Krisdiyanto; Sudarlin Sudarlin; Hikmah Supriyati
Biology, Medicine, & Natural Product Chemistry Vol 10, No 1 (2021)
Publisher : Sunan Kalijaga State Islamic University & Society for Indonesian Biodiversity

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14421/biomedich.2021.101.41-46

Abstract

The electronic transition processes of α-mangostin and β-mangostin as dye compounds in DSSC and their ability to transfer electrons to semiconductors have been studied in theory. The research was carried out computationally using the NwChem application. The methods used are Density Functional Theory (DFT) for structure optimization and Time-Dependent DFT (TD-DFT) for electronic transitions. The results showed that the energy of HOMO β-mangostin was lower that it was more stable or easier to form bonds with semiconductors. Likewise, its LUMO energy is lower than α-mangostin that it is easier to inject electrons into the semiconductor. The energy difference of HOMO-LUMO β-mangostin is smaller than α-mangostin. This shows that β-mangostin is more easily excited or more efficient in exciting solar energy to convert it into electricity. This is consistent with the molecular spectra where λmaxβ-mangostin is at a higher wavelength. Orbital analysis shows electron injection of α-mangostin and β-mangostin into the semiconductor via double O atoms in each molecule. The injection is influenced by the bond length, where the bond length of α-mangostin to TiO2 is smaller than that of β-mangostin to TiO2.
Krokot Extract (Portulaca Oleracea. L) as Natural Light-harvesting pigments for Dye-Sensitized Solar Cells (DSSCs) : Influence of Dye Acidity Cici Nurfaizah; Didik Krisdiyanto; Khamidinal Khamidinal; Sudarlin Sudarlin
Biology, Medicine, & Natural Product Chemistry Vol 4, No 1 (2015)
Publisher : Sunan Kalijaga State Islamic University & Society for Indonesian Biodiversity

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (385.305 KB) | DOI: 10.14421/biomedich.2015.41.17-24

Abstract

Dye-sensitized solar cells (DSSCs) was fabricated using natural dyes extracted from krokot (Portulaca Oleracea. L). The effect of dye acidity was investigated on natural pH extract, 5.00, 4.00 and 3.00 of pH. The efficiency and stability DSSCs as a function of the dye acidity was studied. The result of the UV-Vis shows that the absorption of wave-length from dye extract of krokot is located in the visible region with the absorbance peak in 410.5 nm and 664.5 nm which are the peak of chlorophyll. The efficiency of extract krokot dye sensitized solar cells was decreasing  6.88 x 10-3 %  to  0.42 x 10-3 % when pH of the dye was adjusted from 6.27 to 3.00. DSSCs stability was also decreased look for efficiency loss from 5.27% to 97.49% in the same conditions.
Theoretical Modification of Cyanidin as Sensitizers in Dye Sensitized Solar Cell (DSSC) Using Rhodanine Acetic Acid as Electron Withdrawing Group Sudarlin Sudarlin
JKPK (Jurnal Kimia dan Pendidikan Kimia) Vol 4, No 1 (2019): JKPK ( Jurnal Kimia dan Pendidikan Kimia)
Publisher : Program Studi Pendidikan Kimia FKIP Universitas Sebelas Maret

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (749.84 KB) | DOI: 10.20961/jkpk.v4i1.28978

Abstract

Modification of cyanidin as sensitiser on Dye Sensitized Solar Cell (DSSC) has been carried out theoretically in this study using rhodanine acetic acid. The rhodanine acetic acid as electron withdrawing group can increase the electron density of the LUMO state, so injection of the excited electron to the semiconductor can also be increase. The theoretical method used is DFT/B3LYP theory by NWChem software. The calculation shows that the LUMO energy of cyanidin rhodanine acetic is higher than cyanidin, so electron injection to the conduction band of the semiconductor is easier. This condition is supported by reduced of HOMO-LUMO energy gap, so the range of the sunlight that can be involved in the electron excitation process is wider. In addition, the LUMO electron density of the cyanidin rhodanine acetic is localized at rhodanine acetic which makes the distance of the excited electron is closer to the semiconductor, thereby facilitating electron injection.
Upaya Penyuluhan Proses Sertifikasi Halal Hasil Penyembelihan Rumah Potong Ayam (RPA) Pada Anggota Kelompok Ternak Unggas “Mitra Harapan Turi” Dusun Garongan Wonokerto Turi Sleman Yogyakarta Khamidinal Khamidinal; Sudarlin Sudarlin; Didik Krisdiyanto; Irwan Nugraha; Endaruji Sedyadi
Aplikasia: Jurnal Aplikasi Ilmu-ilmu Agama Vol. 18 No. 1 (2018)
Publisher : UIN Sunan Kalijaga

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14421/aplikasia.v18i1.1354

Abstract

Persaingan antara pelaku usaha yang semakin ketat akibat interaksi global menuntut setiap UKM (Usaha Kecil Menengah) sektor pangan harus lebih kreatif dan cermat dalam memasarkan produk mereka. Salah satu yang menjadi isu penting dalam persaingan global produk UKM sektor pangan adalah kenyamanan konsumen, khususnya konsumen muslim yang menuntut kehalalan suatu produk pangan. Oleh karena itu, pemerintah dan pihak terkait harus aktif memberikan penyuluhan terkait dengan sertifikat halal suatu produk. Jurusan Kimia UIN Sunan Kalijaga sebagai lembaga pendidikan tinggi yang core studinya fokus pada integrasi-interkoneksi sains-keislaman mewujudkan perannya dalam bentuk kegiatan penyuluhan proses sertifikasi halal hasil penyembelihan Rumah Potong Ayam (RPA) yang disampaikan kepada UKM anggota kelompok ternak unggas “Mitra Harapan Turi” di Dusun Garongan Wonokerto Turi Sleman Yogyakarta. Kegiatan ini merupakan langkah awal yang diikuti dengan kegiatan pendampingan, pembinaan, dan pengawasan bagi kelompok UKM tersebut guna meningkatkan pendapatan mereka. Materi penyuluhan meliputi manfaat dan proses sertifikasi halal suatu produk, khususnya produk RPA, serta materi mengenai teknik penyembelihan ayam potong yang sehat dan halal sesuai dengan syariat Islam. Peserta memperoleh pengetahuan baru dan motivasi dalam mengembangkan UKM mereka. Jika produk mereka dilengkapi dengan sertifikat halal, maka wilayah pemasaran produk mereka dapat diperluas hingga ke hotel dan rumah makan. Ini sangat memungkinkan karena Yogyakarta merupakan kota wisata yang memiliki banyak hotel dan rumah makan. Sebanyak 7 RPA bersedia mengurus sertifikat halal untuk produk mereka pada gelombang pertama bulan Maret 2015, sementara RPA yang lain menyusul pada gelombang kedua. Mereka didampingi oleh Jurusan Kimia UIN Sunan Kalijaga hingga memperoleh sertifikat tersebut dari LPPOM-MUI. Selanjutnya, Jurusan Kimia UIN Sunan Kalijaga bersama dengan LPPOM-MUI D.I. Yogyakarta akan melakukan pengawasan dalam pelaksanaan jaminan halal masing-masing RPA yang telah memiliki sertifikat halal.
PENGARUH PENAMBAHAN EKSTRAK LIDAH BUAYA DENGAN PEMLASTIS SORBITOL TERHADAP SIFAT MEKANIK DAN DEGRADASI PLASTIK BIODEGRAD Dahlia Rahima; Endaruji Sedyadi; Imelda Fajriati; Sudarlin Sudarlin
Integrated Lab Journal Vol. 7 No. 1 (2019): Integrated Lab Journal
Publisher : UIN Sunan Kalijaga Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (684.213 KB) | DOI: 10.14421/ilj.2019.%x

Abstract

Plastik Biodegradabel yang dibuat dari campuran pati garut, sorbitol, asam asetat, dengan penambahan ekstrak lidah buaya telah dilakukan. Penelitian ini bertujuan untuk mengetahui pengaruh penambahan ekstrak lidah buaya terhadap sifat mekanik dan sifat degradasi plastik Biodegradabel dalam tanah. Metode dalam pembuatan plastik Biodegradabel dengan penambahan ekstrak lidah buaya ada empat tahap, yaitu pembuatan ekstrak lidah buaya, pembuatan plastik Biodegradabel, karakterisasi plastik Biodegradabel, dan uji biodegradasi plastik. Berat ekstrak lidah buaya divariasikan masing-masing yaitu 0; 0,1; 0,3; 0,5; 0,7; dan 1,4 gram. Plastik Biodegradabel kemudian dikarakterisasi dengan FTIR, untuk mengetahui gugus fungsi dalam plastik. Uji mekanik dilakukan untuk mengetahui ketebalan, kuat tarik, dan elongasi plastik. Uji biodegradasi kemudian dilakukan pada sampel tanah. Kelembapan, pH, dan temperatur tanah dijaga agar selalu konstan. Hasil penelitian menunjukkan bahwa penambahan ekstrak lidah buaya dapat meningkatkan nilai ketebalan plastik sampai 0,11 mm. Penambahan ekstrak lidah buaya dapat pula meningkatkan nilai elongasi hingga 16,99% pada penambahan 1,4 gram. Kuat tarik plastik mengalami penurunan menjadi 4,66 MPa pada penambahan 0,5 gram lidah buaya. Laju serapan air yang dihasilkan pada penambahan ekstrak lidah buaya dengan konsentrasi 0,1 gram hanya menyerap 30% air. Uji biodegradasi plastik Biodegradabel menggunakan media tanah menunjukkan bahwa plastik dapat terdegradasi di tanah dalam waktu 12 hari.
Aplikasi Edible Film Pati Singkong Dengan Penambahan Ekstrak Lidah Buaya (Aloe Vera) Pada Cabai Rawit (Capisum Frutascens L.) Mei Dian Syaputra; Endaruji Sedyadi; Imelda Fajriati; Sudarlin Sudarlin
Integrated Lab Journal Vol. 8 No. 1 (2020)
Publisher : UIN Sunan Kalijaga Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14421/ilj.2020.080101

Abstract

Penelitian tentang edible film menggunakan bahan dasar pati singkong dengan penambahan ekstrak lidah buaya dan sorbitol sebagai plasticizer telah dilakukan. Tujuan dari penelitian ini untuk memahami pengaruh penambahan ekstrak lidah buaya terhadap sifat mekanik edible film danpengaruh pelapisan edible film terhadap masa simpan cabai rawit (Capsicum frutescens L.) berdasarkan uji susut bobot dan uji tekstur. Penelitian ini dilakukan dengan 4 tahapan kerja yaitu, pembuatan ekstrak lidah buaya, pembuatan edible film, uji sifat mekanik yang meliputi ketebalan, kuat tarik, elongasi, modulus elastisitas, dan aplikasi edible film pada cabai rawit. Variasi ekstrak lidah buaya yang ditambahkan sebesar 0,01; 0,03; 0,05; 0,07 dan 0,14 gram. Karakteristik gugusfungsi diuji dengan menggunakan FTIR dan uji aplikasi edible film pada cabai rawit dilakukan selama empat belas hari dengan parameter uji susut bobot dan tekstur. Sifat mekanik terbaik dihasilkan dengan ketebalan 0,0620 mm, kuat tarik 10,8342 MPa, elongasi 3,4166 %, moduluselastisitas 3,5544 MPa dan WVTR sebesar 3,8776 g/m2.24 jam. Penambahan ekstrak lidah buaya menunjukkan pengaruh yang signifikan terhadap sifat mekanik. Pelapisan edible film pada cabai rawit berpengaruh terhadap masa simpan yang dibuktikan dengan susut bobot dan uji tekstur.
SYNTHESIS OF CHITOSAN-FILM COMPOSITE TiO2 USING SORBITOL AS PLASTICIZER Imelda Fajriati; Endaruji Sedyadi; Sudarlin Sudarlin
ALCHEMY Jurnal Penelitian Kimia Vol 13, No 1 (2017): March
Publisher : UNIVERSITAS SEBELAS MARET (UNS)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/alchemy.13.1.4350.75-94

Abstract

The synthesis of chitosan–TiO2 film composite using sorbitol as plasticizer has been conducted. This research aims to develop environmental friendly plastic material which is safe for health due to the use of biodegradable chitosan - TiO2 that can block UV rays and therefore, maintain the quality of product from damage caused by UV rays. The anatase phase TiO2 nanocrystal was synthesized in chitosan matrix at room temperature and aging process. The solution was then added and blended in sorbitol for 24 hours to obtain homogeneous solution. The composite film was formed by coating method on a plate substrate, followed by drying. The characterization of film composite by XRD, TEM and FTIR showed the forming of anatase phase TiO2 nanocrystal that dispersed in chitosan matrix and formed the hydrogen bond. Meanwhile, from the physical properties characterization it was observed that the use of sorbitol as plasticizer had improved the plasticity tensile strength and elongation of the composite film. However, the excess sorbitol reduced the elasticity, tensile strength and elongation of the plastic. The best quality of plasticity obtained from film composite added by 3 % of sorbitol.
Utilization of Montmorillonite-Modified Earthenware from Bentonite-Ca as a Microbial Fuel Cell (MFC) Membrane Based on Tempe Liquid Waste as a Substrate Sudarlin Sudarlin; Andika Wahyu Afrianto; Melly Khoerunnisa; Dhea Wiegya Rahmadhani; Anggit Nugroho
Jurnal Kimia Sains dan Aplikasi Vol 23, No 6 (2020): Volume 23 Issue 6 Year 2020
Publisher : Chemistry Department, Faculty of Sciences and Mathematics, Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (2963.776 KB) | DOI: 10.14710/jksa.23.6.222-227

Abstract

Modifications of the Microbial Fuel Cell (MFC) membrane need to be carried out to increase its electric potential energy. This research aims to determine the effect of montmorillonite from bentonite-Ca as a composite in modified earthenware (GT), which is then used as a membrane of the MFC-based on tempe wastewater as substrate. The results obtained were compared to MFC that used pure earthenware membrane (GM). The ratio of bentonite-Ca and clay in GT was 50:50, while GM used 100% of clay. Characterizations of GT dan GM were performed using FTIR, XRD, and SAA. MFC testing was carried out for 24 hours, where every 2 hours, measurements of potential difference (V), current (A), and power density (W/cm2) were carried out. FTIR and XRD data showed an increase in montmorillonite content in GT, while SAA data showed a decrease in pore volume in GT. The decrease in pore volume GT occurs due to an increase in the number of trivalent cations (Al3+, Fe3+) and bivalent (Mg2+). These cations help transfer protons from the anode to the cathode, which causes a decrease in the potential difference and an increase in the current strength and the MFC-GT power density. The average difference between the decrease in potential difference from MFC-GM to MFC-GT is 0.043 V, while the increase in current is 0.022 mA, and the increase in power density is 0.163 mW/cm2.
Studi Teoritis Penggunaan Derivasi Asam Siano sebagai Akseptor Elektron dalam Pelargonidin sebagai Senyawa Pewarna Sel Surya Sensitasi Muhamad Imam Muslim; Sudarlin Sudarlin
Jurnal Kimia Sains dan Aplikasi Vol 22, No 4 (2019): Volume 22 Issue 4 Year 2019
Publisher : Chemistry Department, Faculty of Sciences and Mathematics, Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (2068.149 KB) | DOI: 10.14710/jksa.22.4.123-128

Abstract

The theoretical study of the use of cyano acid derivatives as electron acceptor groups in pelargonidin as a dye compound in sensitized solar cells (DSSC) was successfully carried out. Theoretical study was carried out with the purpose to determine the effect modification of the addition of cyanoacrylic benzothiadiazole, cyanoacrylate, cyanovinyl, and cyanocynamic as electron acceptors to the characteristics of pelargonidin as dye DSSC. The effect of modification is based on the parameters of bond length, spectra, molecular electron density, light harvesting efficiency (LHE), (VRP), and HOMO-LUMO energy. The molecular structure created using the Avogadro program, then optimized by DFT/TDDFT method using a base set 6.311G *. Based on the results of research on pelargonidin-benzothiadiazole cyanoacrylate is a better modification when compared with pelargonidin without modification or pelargonidin modified with other cyano acids. This modification is better modification based on parameters molecular electron density, HOMO-LUMO energy, (VRP), bond lengths, and spectra. Pelargonidin-benzothiadiazole cyanoacrylic electron density in LUMO conditions centred in benzothiadiazole cyanoacrylic, HOMO and LUMO energy of dye is -4.97856 eV & -2,56731 eV, VRP value 0.439, bond lengths 1.936 Å, and spectra at wavelength 393.14 nm & 377.09 nm. Based on the light harvesting efficiency (LHE), pelargonidin without modification is the best modification with an LHE value 0.820.
Co-Authors Andika Wahyu Afrianto Anggit Nugroho Asmiddin, Ahmad Maulid Azlin, Azlin Cici Nurfaizah Dahlia Rahima Dhea Wiegya Rahmadhani Didik Krisdiyanto Didik Krisdiyanto Didik Krisdiyanto Endaruji Sedyadi Endaruji Sedyadi Endaruji Sedyadi Endaruji Sedyadi Hikmah Supriyati Imelda Fajriati Imelda Fajriati Imelda Fajriati Irwan Nugraha Khamidinal Khamidinal Khamidinal Khamidinal Mawadha Sasya, Nadasyifa Mei Dian Syaputra Melly Khoerunnisa Muhamad Imam Muslim Muhammad Nur Maulidin Mahmud Winarto Haryadi