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All Journal Sodality: Jurnal Sosiologi Pedesaan Jurnal Rekayasa Proses International Journal of Renewable Energy Development JURNAL KIMIA SAINS DAN APLIKASI The Journal of Pure and Applied Chemistry Research Journal of Mathematical and Fundamental Sciences Jurnal Riset Kimia ALCHEMY Jurnal Penelitian Kimia Indonesian Journal of Chemistry Jurnal Rekayasa Proses Edulingua: Jurnal Linguistiks Terapan dan Pendidikan Bahasa Inggris JPPS (Jurnal Penelitian Pendidikan Sains) SEMAR Renjana Pendidikan Dasar International Journal of Science and Society (IJSOC) Makara Journal of Science Jurnal Natural Jurnal MIPA dan Pembelajarannya Molekul: Jurnal Ilmiah Kimia Prosiding Temu Ilmiah Nasional Guru International Journal of Renewable Energy Development Bulletin of Chemical Reaction Engineering & Catalysis Muara: Jurnal Manajemen Pelayaran Nasional Jurnal Rekayasa Proses
Fitria Rahmawati
Department Of Chemistry, Faculty Of Mathematics And Natural Sciences, Sebelas Maret University
Agriculture, Biological Sciences & Forestry Arts Humanities Astronomy Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Immunology & microbiology Languange, Linguistic, Communication & Media Materials Science & Nanotechnology Mathematics Medicine & Pharmacology Neuroscience Physics Social Sciences Other

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Synthesis of Ni2+/Natural Zeolite by Electro-Ion Exchange I F Nurcahyo; Fitria Rahmawati; Lisa Agustina Nurlaila; Yuniawan Hidayat; Eddy Heraldy; Khoirina Dwi Nugrahaningtyas; Taufiiq-Yap Yun Hin
ALCHEMY Jurnal Penelitian Kimia Vol 22, No 1 (2026): March
Publisher : UNIVERSITAS SEBELAS MARET (UNS)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/alchemy.22.1.80180.241-245

Abstract

Electro-ion exchange was carried out to synthesize Ni2+/natural zeolite at room temperature using various concentrations of Ni(NO3)2 of 0.05, 0.1, 0.15, and 2.0 M, zeolite wetting times of 0 and 24 hours, electrolysis times of 1, 2, and 3 hours, and voltages of 7.5, 15, and 28.4 V. The amount of Ni2+ that can be impregnated in the zeolite was monitored with Atomic Absorption Spectroscopy (AAS). The Ni2+/zeolite formed was characterized for its total acidity. The optimum conditions for this process are 28.4 V, 3 hours, and 0.1 M Ni(NO3)2. Under these optimum conditions, the Ni2+ content of the natural zeolite was 0.04 mmol/g, with a total acidity of 2.5 mmol/g. The increasing trend in the amount of Ni2+ content matched the trend in the total acidity. The synthesized Ni²⁺/natural zeolite is expected to be applied as a catalyst in reactions such as hydrogenation and hydrocracking.
SYNTHESIS AND CHARACTERIZATION OF CERAMIC METAL Ni-YSZ PREPARED FROM LOCAL ZIRCON SAND AT VARIOUS Ni:YSZ COMPOSITION Karima Apriany; Fitria Rahmawati; Eddy Heraldy; Dani G Syarif; Syoni Soepriyanto
ALCHEMY Jurnal Penelitian Kimia Vol 13, No 2 (2017): September
Publisher : UNIVERSITAS SEBELAS MARET (UNS)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/alchemy.13.2.2384.217-229

Abstract

This research synthesized a cermet Ni-YSZ, in which the YSZ (yttria stabilized-zirconia) was synthesized from the local zircon sand, ZrSiO4, as a side product of tin mining plant in Bangka island, Indonesia. The synthesized YSZ in this research is zirconia, ZrO2 doped by 8 % mol of yttrium dioxide. The synthesis used solid state reaction method and the result was characterized its crystal structure and its cell parameters by XRD analysis equipped with Le Bail refinement, surface morphology analysis, and an impedance analysis to understand its ionic conductivity. The cermet Ni-YSZ was synthesized at a various composition of Ni:YSZ i.e., 20:80, 30:70, and 40:60 (b/b). The analysis shows that Ni-YSZ is in two phases of Ni and YSZ without any presence of a third phase. It indicates that there was no solid state reaction between Ni and YSZ during synthesis. In this Ni-YSZ cermet, the Ni phase in a cubic structure, and the YSZ is also in a cubic structure. Morphological study shows that the addition of Ni to YSZ allows the morphology to become more roughness with larger grain size. This research found that the Ni-YSZ 20:80 has highest ionic conductivity.
Pelatihan Pembuatan Produk Sabun Cair Serbaguna Sebagai Upaya Inisiasi Usaha Mandiri Masyarakat Desa Tempuran Ngawi Rahmawati, Fitria
SEMAR (Jurnal Ilmu Pengetahuan, Teknologi, dan Seni bagi Masyarakat) Vol 11, No 2 (2022): November
Publisher : LPPM UNS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/semar.v11i2.64403

Abstract

Tempuran adalah sebuah desa di wilayah Kecamatan Paron, Kabupaten Ngawi, Provinsi Jawa Timur dan terdiri dari beberapa dusun, yaitu: Bulakan (ujung timur di pinggir Jalan Raya Ngawi - Maospati), Tempuran, Tempurejo, Munggur, Melikan (di tengah jalur kereta api), Jegolan (wilayah paling ujung selatan), Bendo, dan Bakalan (ujung barat). Sebagian besar geografisnya berupa lahan pertanian umumnya persawahan, dan topografi wilayahnya berupa dataran rendah. Sebagian besar penduduk asli desa Tempuran merupakan petani dan pekerja ladang, dengan jadwal pekerjaan sesuai musim tanam dan musim petik. Sesuai dengan letak georafisnya, desa ini relative mudah dijangkau dan terbuka dari berbagai arah mata angin. Sehingga jika ada usaha mikro dan menengah yang bisa diinisiasi, tidak akan terjadi kesulitan dalam akses pemasaran maupun transport bahan bakunya. Berdasarkan hal tersebut, grup riset solid state chemistry & catalysis (SSC) melakukan pelatihan pembuatan produk sabun cair berbahan baku organik gliserin sebagai dispersan, dan asam sitrun dan/ air lemon sebagai pemberi aroma. Produk sabun cair tersebut berpotensi untuk dikembangkan sebagai usaha mandiri warga karena bahan bakunya mudah didapatkan, selain itu produk sabun cair ini serbaguna, bisa digunakan untuk membersihkan badan, cuci tangan, mencuci piring dan baju. Sehingga, kemungkinan pemasarannya masih luas. Warga mengikuti kegiatan dan dapat mempraktekkan pembuatan dan menghasilkan produk sabun cair dengan baik. Kata kunci : sabun cair serbaguna; masyarakat; ngawi;  pelatihan
Molecular simulation of single N and double N/S doping to carbon networks and the effect of doping dispersant Arikasuci Fitonna Ridassepri; Fitria Rahmawati; Agung Tri Wijayanta; Dedi Rohendi; Dyah Purwaningsih; Shota Sato; Jun Nakamura
International Journal of Renewable Energy Development Vol 15, No 5 (2026): September 2026
Publisher : Center of Biomass & Renewable Energy (CBIORE)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61435/ijred.2026.61404

Abstract

This research conducted a molecular simulation of single N and double N/S doping into a carbon network. The simulation aimed to explain the effect of N and N/S doping, which was investigated experimentally by our previous research, and to prove the hypothesis that N and/or S replace a normal C site within the carbon crystal structure. Experimental data agree with the simulation result, as shown by the increasing ID/IG ratio in the Raman spectrum, which indicates defect formation after doping. Meanwhile, the XRD patterns of the doped carbon are similar to those of the undoped carbon. It suggests that the dopants N and/or S diffused and replaced the C atom from its normal site in the carbon crystal structure without forming new N and/or S-based compounds. The result is consistent with different dispersants investigated in this research, i.e., deionized water and ethanol. However, ethanol provided better dispersibility than water, resulting in a modified N/S carbon material with ethanol dispersant, NSCE, with a higher electrical conductivity of 23.74 x 10-1 Scm-1 than the N/S-modified carbon with water dispersion, NSCW, i.e., 5.97 x 10-1 Scm-1. The presence of defects increases the number of sites for charge carriers to migrate within the carbon network, making it a good electrode material for an LFP battery, with an initial charging capacity of 349.94 ± 79.04 mAh/g and an initial discharge capacity of 113.41 ± 12.59 mAh/g. The results reveal N/S-doped carbon as a sustainable candidate for lithium-ion batteries and other advanced energy storage technologies. 
Co-Authors -, Patiha Abu Masykur Abu Masykur Agung T. Wijayanta Agung Tri Wijayanta AGUS PURWANTO Agustin Widyowati Alaih, Imam Shofid Andini W. Pratiwi Anggia Putri Gustami Arikasuci Fitonna Ridassepri Aryanthi, G. Ayu Aryunani ., Aryunani Aulia, Nabila Putri Bagus Swandito, Paulus Bintang Junita Siagian, Bintang Junita Byba Melda Suhita Chanif Mahdi Chintya Dewi, Chintya Dani G Syarif Dedi Rohendi Dhini A. Phasa Dian Irianti Dian Irianti Dian Maruto Widjonarko Dwi Aman Nur Romadhona Dwi Nugrahaningtyas, Khoirina Dyah Purwaningsih Eddy Heraldy Eddy Heraldy Eddy Heraldy Eddy Heraldy Eddy Heraldy Eddy Heraldy Edi Pramono Fadlulloh, Zaki Firanda Larasati Gesyth Mutiara Hikhmah Al Ichsan Handaka, Muhammad F. A. Heliani, Kinkind Raras I F Nurcahyo I F Nurcahyo, I F I. F. Nurcahyo I.F. Nurcahyo IF Nurcahyo Imam Shofid Alaih Indah Rizki Fitriani, Indah Rizki Irvina M. Murni Irvinna Mutiara Murni Istiqomah, Ana Ulfa Ita Permadani Ivandini Tribidasari Anggraningrum Jin Miyawaki Jun Nakamura Kardi, Soeparman Karima Apriany Khoirina Dwi Nugrahaningtiyas Khoirina Dwi Nugrahaningtyas Khoirina Dwi Nugrahaningtyas Khoirina Dwi Nugrahaningtyas Khoirina Dwi Nugrahaningtyas Khoirina Dwi Nugrahaningtyas Khoirina Nugrahaningtyas Kinkind Raras Heliani Koji Nakabayashi Larasati Larasati Lisa Agustina Nurlaila Mahsus, Mahsus Maisaroh, Ummi Mawasthi, Wanodya Anggit Moedjijono Moedjijono Mohamad Syafri Mudjijono Mudjijono Muhammad A. Munir Muhammad Farhan Muzayanha, Soraya U. Nilasary, Hanida Nugraheni, Putranty Widha Nur Aini NUR FADILAH Nurani Handayani Nurcahyo, I. F. Nurcahyo, I.F. Nursukatmo, Hartoto Oktaviano, Haryo S. Pamularsih A.W Paramartha, I Gusti Ayu Filia Patiha - Pranoto . Puspitasari, Noviana Putri, Denis Octareta Amelia Qurrotul'aini, Nisriina 'Abidah Raihan, Edo Ridwan, Qanita Rini Wulandari Rini Wulandari Rizki Nur Analita Rochmi I. Apriyani, Rochmi I. Rosalin, Azka W Saputri, Dini Deviana Sayekti Wahyuningsih Sayekti Wahyuningsih Sayekti Wahyuningsih Sentot B. Rahardjo, Sentot B. Septia K Arifah Shobikah, Nanik Shota Sato Sidiq Fathonah Siti Rondiyah Sofia, Iva Suciana Nur Cahyaningsih Syafira Nur Zalfa Syoni Soepriyanto Syulfi Faiz Taufiiq-Yap Yun Hin Trianingsih Eni Lestari Viona Natalia Viona Natalia W.W, Soegimin Wanodya Anggit Mawasthi Widiasih Wijayanta, Agung Tri Witri Wahyu Lestari Wulan Cahya Inayah Yuni, Prima Novia Yuniawan Hidayat Yuniawan Hidayat Yuniawan Hidayat Yuniawan Hidayat Yuniawan Hidayat Yuniawan Hidayat Zalfa, Syafira Nur