Garuda - Garba Rujukan Digital

p-Index From 2021 - 2026

1.829

P-Index

This Author published in this journals

All Journal Reaktor BERKALA FISIKA Jurnal Penelitian Fisika dan Aplikasinya (JPFA) Jurnal Sains Materi Indonesia Chem Info YOUNGSTER PHYSICS JOURNAL Prosiding Seminar Nasional Sains Dan Teknologi Fakultas Teknik Bulletin of Chemical Reaction Engineering & Catalysis JITEK (Jurnal Ilmiah Teknosains) Indonesian Journal of Chemistry Journal of Physics and Its Applications Astonjadro Jurnal Pijar MIPA Bulletin of Chemical Reaction Engineering & Catalysis JURNAL REKAYASA KIMIA & LINGKUNGAN

Iis Nurhasanah

Department Of Physics, Faculty Of Science And Mathematics, Diponegoro University, Jl. Prof. Soedarto SH, Tembalang, Semarang 50275, Indonesia

Author-ID : 334756

Agriculture, Biological Sciences & Forestry Astronomy Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Earth & Planetary Sciences Education Energy Engineering Materials Science & Nanotechnology Mathematics Mechanical Engineering Physics Veterinary

Published : 40 Documents Claim Missing Document

Claim Missing Document

Articles

1 2 3 4

ANALISIS MIKROSTRUKTUR NANOPARTIKEL CeO2 DIDOPING Zn YANG DISINTESIS MENGGUNAKAN METODE PRESIPITASI Ririn Futikhaningtyas; Nurul Wahyu Puspaningrum; Iis Nurhasanah
Youngster Physics Journal Vol 2, No 2 (2013): Youngster Physics Journal April 2013
Publisher : Jurusan Fisika, Fakultas Sains dan Matematika, Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (747.291 KB)

Zn-doped CeO2 nanoparticles with various Zn content of 0 - 20% have been synthesized by using precipitation method in the solvent mixture of aquades and isopropanol at room temperature. The precipitant was calcinated at temperatur 300oC for 3 hours. The structural properties of CeO2 nanoparticles were characterized by using x-ray diffraction. X-ray diffraction pattern was analyzed to investigate the influence of Zn doping on crystalite size, lattice constant and lattice strain of CeO2 nanoparticle. Observation to the peaks diffraction indicate that all of the CeO2 nanoparticle with various Zn doping have cubic fluorite structure and lattice constants in the range 5,4155 Å – 5,4254 Å. The crystallite sizes of 6 – 11 nm were obtained by Williamson-Hall plot method. Incorporation of Zn to the CeO2 nanoparticle decrease the crystallite size. The crystallite size of Zn-doped CeO2 nanoparticles is depend on Zn%. Keywords: CeO2, nanoparticle, precipitation, lattice constant, x-ray diffraction

ANALISIS SIFAT OPTIS LAPISAN TIPIS TiO2:N UNTUK FOTODEGRADASI DIRECT BLUE 71 Yunita Indriyani; Heri Sutanto; Iis Nurhasanah
Jurnal Ilmiah Teknosains Vol 3, No 2 (2017): JiTek
Publisher : Universitas PGRI Semarang

Lapisan tipis TiO2:N telah dideposisikan di atas substrat kaca menggunakan metode sol-gel spray coating. TiO2 telah banyak diaplikasikan sebagai fotokatalis untuk fotodegradasi polutan organik. Celah energi TiO2 (~3,2 eV) membatasi aktivitas fotodegradasinya hanya pada rentang panjang gelombang UV. Cahaya matahari yang tersedia melimpah, sebagian besar berupa cahaya tampak dan sebagian kecil cahaya UV. Penggunaan cahaya matahari untuk fotodegradasi memerlukan fotokatalis dengan celah energi < 3.0 eV. Pada penelitian ini, nitrogen digunakan sebagai dopan untuk memperkecil celah energi TiO2, sehingga TiO2 dapat bekerja aktif untuk fotodegradasi menggunakan sinar matahari. Titanium (IV) isopropoxide digunakan sebagai sumber Ti dan urea sebagai sumber nitrogen pada larutan prekursor TiO2:N. TiO2:N dideposisikan di atas hotplate pada temperatur 450°C. Sifat optis, struktur kristal dan morfologi permukaan TiO2:N berturut-turut diuji menggunakan spektrofotometer UV-Vis, XRD, dan SEM. Keberadaan nitrogen dalam TiO2:N dianalisis menggunakan EDX. Kemampuan fotokatalitik TiO2:N diuji untuk fotodegradasi pewarna DB 71 dengan konsentrasi 10 ppm di bawah radiasi sinar matahari dan lampu UV C selama 3 jam. Spektrum absorbansi yang tinggi teramati pada rentang panjang gelombang 284 – 354 nm yang menunjukkan TiO2:N menyerap cahaya UV lebih baik daripada menyerap cahaya tampak. Celah energi TiO2:N yaitu 2,84 eV bersesuaian dengan celah energi TiO2 struktur rutile dan jenis doping N interstisial. Hal itu diperkuat dengan pola XRD yang menunjukkan puncak-puncak dominan bidang TiO2 rutile (200), (210), (221), (321) dan satu puncak brookite (032). Fotodegradasi DB 71 menggunakan TiO2:N lebih efektif dibandingkan dengan TiO2 murni.

RESPON LARUTAN NANOPARTIKEL CeO2 TERHADAP RADIASI SINAR GAMMA DOSIS RENDAH Iis Nurhasanah; Aldilla Lutfia; Zaenal Arifin
Jurnal Ilmiah Teknosains Vol 5, No 1 (2019): JiTek
Publisher : Universitas PGRI Semarang

Penelitian ini bertujuan untuk mengkaji respon larutan nanopartikel CeO2 terhadap radiasi sinar gamma dosis rendah. Nanopartikel CeO2 disintesis menggunakan metode presipitasi. Struktur dan sifat optis nanopartikel CeO2 dianalisis menggunakan difraktometeri sinar-X dan spektrofotometer UV Vis. Larutan nanopartikel CeO2 dengan konsentrasi berbeda diradiasi dengan sinar gamma dari sumber Co-60 teletherapy. Pola difraksi menunjukkan pembentukan nanopartikel CeO2 dengan ukuran kristalit 9,9 nm.Analisis absorbansi larutan nanopartikel CeO2 menunjukkan perubahan absorbansi linier terhadap peningkatan dosis. Konsentrasi larutan tidak memberikan pengaruh signifikan terhadap respon larutan nanopartikel CeO2 terhadap radiasi sinar gamma. Larutan nanopartikel CeO2 dapat digunakan untuk mengukur radiasi sinar gamma dengan rentang dosis 0 – 3 Gy.

French Fries-Like Bismuth Oxide: Physicochemical Properties, Electrical Conductivity and Photocatalytic Activity Yayuk Astuti; Fauzan Musthafa; Arnelli Arnelli; Iis Nurhasanah
Bulletin of Chemical Reaction Engineering & Catalysis 2022: BCREC Volume 17 Issue 1 Year 2022 (March 2022)
Publisher : Department of Chemical Engineering - Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.9767/bcrec.17.1.12554.146-156

Bismuth oxide synthesis using hydrothermal method has been conducted. This study aims to examine the effect of the hydrothermal reaction time on product characteristics and photocatalytic activity in degrading methyl orange dye. Bismuth oxide synthesis was initiated by dissolving bismuth nitrate pentahydrate (Bi(NO3)3.5H2O) and Na2SO4 in a distilled water and added NaOH gradually. The solution formed was transferred into a Teflon-lined autoclave and heated at 120 °C with time variations of 8–16 h. The formation of bismuth oxide was indicated by the vibrations of the Bi−O−Bi and Bi−O groups and the crystal structure consisting of a-Bi2O3, β-Bi2O3, and g-Bi2O3. In addition, the highest photocatalytic activity can be examined through several factors, such as: content of Bi−O−Bi and Bi−OH groups, crystal structure, band gap values, morphology, and surface area, acquired as a result of the effect of hydrothermal reaction time. Copyright © 2021 by Authors, Published by BCREC Group. This is an open access article under the CC BY-SA License (https://creativecommons.org/licenses/by-sa/4.0).

The Role of Concentration Ratio of TTiP:AcAc on the Photocatalytic Activity of TiO2 Thin Film in Reducing Degradation Products of Used Frying Oil Ummi Kaltsum; Affandi Faisal Kurniawan; Iis Nurhasanah; Priyono Priyono
Bulletin of Chemical Reaction Engineering & Catalysis 2017: BCREC Volume 12 Issue 3 Year 2017 (December 2017)
Publisher : Department of Chemical Engineering - Diponegoro University

The TiO2 thin film has been applied to reduce degradation products (free fatty acid/FFA and peroxide value/PV) in used frying oil under ultraviolet (UV) light irradiation. FFA and PV are degradation products in used frying oil that can cause various diseases in human. In this study, the TiO2 thin films were made from precursor solution with concentration ratio of titanium tetraisopropoxide (TTiP) and acetylacetone (AcAc) of 1:1, 1:2, 2:1, 2:3, and 3:2. The aim of this study is to investigate the effect of concentration ratio of TTiP and AcAc on the photocatalytic activity of TiO2 thin film in reducing FFA and PV of used frying oil. The spray coating method was used to deposit precursor solution of TiO2 onto glass substrate at 450 oC. All TiO2 thin films consist of spherical-like grain with dominant structure of TiO2 rutile. The band gap energy of TiO2 thin films was in the range 3.11-3.16 eV. Concentration ratio of TTiP and AcAc of 2:3 results in TiO2 thin film with highest photocatalytic activity in reducing FFA and PV of used frying oil.

Reduction of Peroxide Value and Free Fatty Acid Value of Used Frying Oil Using TiO2 Thin Film Photocatalyst Ummi Kaltsum; Affandi Faisal Kurniawan; Iis Nurhasanah; Priyono Priyono
Bulletin of Chemical Reaction Engineering & Catalysis 2016: BCREC Volume 11 Issue 3 Year 2016 (December 2016)
Publisher : Department of Chemical Engineering - Diponegoro University

The quality of used frying oil degraded due to the presence of products degradation, such as; PV and FFA which formed during the frying process. PV and FFA are harmful to human health. The photocatalytic activity of TiO2 thin film has been applied in various fields, especially in the environment. The aim of this study is to evaluate photocatalytic activity of TiO2 thin film for reducing PV and FFA in used frying oil. The TiO2 thin films were deposited on glass substrate by spray coating method at a temperature of 450 oC. The TiO2 precursor solution was prepared by mixing TTiP, AcAc, and ethanol. The thin films were varied into two conditions; as-deposited and annealed at a temperature of 500 oC. The morphology, crystalline structure, and optical properties of the thin films were characterized by scanning electron microscope (SEM), X-ray Diffraction (XRD), and UV-VIS spectrophotometer, respectively. The photocatalytic process was carried out by putting TiO2 thin film in used frying oil and irradiated by sunlight. The result showed that both of TiO2 thin films were still amorphous in nature. However, there was a peak with low intensity for annealed TiO2 thin film which corresponding to the TiO2 anatase crystals plane of (101). Annealing process improved crystallinity and changed the shape morphology of TiO2 thin films. The band gap was found to be 3.59 eV for as-deposited TiO2 thin film and 3.49 eV for the annealed-TiO2 thin film. The photocatalytic process shows that TiO2 thin films reduced FFA and PV of used frying oil up to 67.10% and 79.15%, respectively. Photocatalytic activity of annealed TiO2 thin film was higher than as-deposited TiO2 thin film. The results indicated that TiO2 thin film photocatalyst potential as the new alternative method to purify used frying oil.

Evaluation of Novel Integrated Dielectric Barrier Discharge Plasma as Ozone Generator Muhammad Nur; Ade Ika Susan; Zaenul Muhlisin; Fajar Arianto; Andi Wibowo Kinandana; Iis Nurhasanah; Sumariyah Sumariyah; Pratama Jujur Wibawa; Gunawan Gunawan; Anwar Usman
Bulletin of Chemical Reaction Engineering & Catalysis 2017: BCREC Volume 12 Issue 1 Year 2017 (April 2017)
Publisher : Department of Chemical Engineering - Diponegoro University

This paper presents a characterization of an integrated ozone generator constructed by seven of reactors of Dielectric Barrier Discharge Plasma (DBDP). DBDP a has spiral-cylindrical configuration. Silence plasma produced ozone inside the DBDP reactor was generated by AC-HV with voltage up to 25 kV and maximum frequency of 23 kHz. As a source of ozone, dry air was pumped into the generator and controlled by valves system and a flowmeter. We found ozone concentration increased with the applied voltage, but in contrary, the concentration decreased with the flow rate of dry air. It was also found that a maximum concentration was 20 mg/L and ozone capacity of 48 g/h with an input power of 1.4 kW. Moreover, in this generator, IP efficiency of 8.13 g/kWh was obtained at input power 0.45 kW and air flow rate of 9 L/min. Therefore, be the higher ozone capacity can be produced with higher input power; however, it provided lower IP efficiency. The effect of dry air flow rate and applied voltage on ozone concentrations have been studied. At last, spiral wire copper was very corrosive done to the interaction with ozone, and it is necessary to do a research for finding the best metals as an active electrode inside of the quartz dielectric.

Dose Distribution 6 MV of X-Ray Photon Beam over Cerium Oxide Nanoparticles Solution Iis Nurhasanah; Hella Arofah; Agus Subagio; Eko Hidayanto; Tri Windarti
Journal of Physics and Its Applications Vol 3, No 1 (2020): November 2020
Publisher : Diponegoro University Semarang Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/jpa.v3i1.9316

CeO2 nanoparticles are biomaterial that demonstrate potential as antioxidant and radioprotector for medical application. In this study, the radioprotector properties of CeO2 nanoparticles was evaluated by measuring absorbed dose of X-ray radiation. CeO2 nanoparticles were synthesized by precipitation and characterized using UV-Vis and FTIR spectrometers. CeO2 nanoparticle solution was prepared with various concentrations from 0.005 mg/mL to 0.06 mg/mL. The solution was exposed to 6 MV X-ray photon beam from medical linear acceleration with a source-to-surface distance of 100 cm and radiation dose of 2 Gy. The absorbed dose of X-ray by CeO2 nanoparticle solution was measured by an ion chamber detector. The absorbance peak at 301 nm observed in UV-Vis spectrum and absorbance peak at 854 and 492 cm-1 in the FTIR spectrum confirmed the formation of CeO2 nanoparticles. Radiation dose measurement exhibited dose reduction of CeO2 nanoparticles solution depend on concentration. CeO2 nanoparticle solution with concentration higher than 0.04 mg/mL showed potential application for radioprotector 6 MV of X-ray photon beam.

Synthesis of Colloidal Silver Nanoparticles in Various Liquid Media Using Pulse Laser Ablation Method and Its Antibacterial Properties Syifa Avicenna; Iis Nurhasanah; Ali Khumaeni
Indonesian Journal of Chemistry Vol 21, No 3 (2021)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/ijc.60344

The silver nanoparticles (AgNPs) have been applied as an antibacterial agent in consumer products, cosmetics, and food industries. In this present work, AgNPs were synthesized in various mediums of polyvinylpyrrolidone (PVP), polyethylene glycol (PEG), and chitosan using the pulse laser ablation synthesis method. Experimentally, a pulse Nd:YAG laser beam (1064 nm, 7 ns, 30 mJ) was directed using a silver mirror and focused using a quartz lens with a focal length of 30 mm on a silver metal plate placed in a petri dish containing liquid mediums for 120 min to produce colloidal silver nanoparticles. The results certified that All AgNPs have a spherical shape with polydisperse size in all media, including PVP, PEG, and chitosan. The smallest AgNPs have been produced in PVP medium with an averaged smallest size of 11.62 nm. Based on this result, PVP is the preferred medium to produce AgNPs with the smallest size and good stability. The produced silver nanoparticles have been successfully employed as an antibacterial agent, which is experimentally demonstrated by using Escherichia coli and Staphylococcus aureus. The result certified that the produced silver nanoparticles could effectively kill the bacteria with a killing percentage of 99.6 to 100%.

The Role of Concentration Ratio of TTiP:AcAc on the Photocatalytic Activity of TiO2 Thin Film in Reducing Degradation Products of Used Frying Oil Ummi Kaltsum; Affandi Faisal Kurniawan; Iis Nurhasanah; Priyono Priyono
Bulletin of Chemical Reaction Engineering & Catalysis 2017: BCREC Volume 12 Issue 3 Year 2017 (December 2017)
Publisher : Masyarakat Katalis Indonesia - Indonesian Catalyst Society (MKICS)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.9767/bcrec.12.3.951.430-436

Co-Authors . Istadi Abidin, Nur Ade Ika Susan Affandi Faisal Kurniawan Agus Bashori Agus Subagio Aldilla Lutfia Ali Khumaeni Andi Wibowo Kinandana Andi Wibowo Kinandana Anwar Usman Arkadea Pringgodani, Andra Arnelli Arnelli Bambang Ariwahjoedi Eko Hidayanto Eko Hidayanto Fajar Arianto Fajar Arianto Fatikasari, Tanty Fauzan Musthafa Gunawan Gunawan H Hadiyanto Hella Arofah Heri Sutanto Hernowo, Alfian Holyness Nurdin Singadimedja I. Istadi Isrina Nur Laili Kadarisman Kadarisman Karnaji Karnaji Karnaji, Karnaji Khairurrijal Khairurrijal Kinasih, Diah Ayu Suci Maman Budiman MARIA BINTANG Maryanto - Mikrajudin Abdullah Muhammad Nur Muhammad Nur Mukti, Nursanti Ajune Nasrullah, Faiz Ndaru Adyono Nofi Marlini Nursidi Yunanto Nurul Wahyu Puspaningrum P Priyono, P Pandji Triadyaksa Paramita, Safira Arta Pratama Jujur Wibawa Priyono Priyono Ririn Futikhaningtyas Rukmono, Dito Andi Rulhendri Rulhendri Sari Pratiwi Singgih Wibowo Sukirno Sukirno Sulistia Nurdianik Sumariyah Sumariyah Susanto Haryadi, Eri Syamsul Arifin Syifa Avicenna Tri Windarti Triadiyaksa, Pandji Ummi Kaltsum Very Richardina Very Richardina Wahyu Ambikawati Weni Safitri Widiyanto Widiyanto Yayuk Astuti Yunita Indriyani Zaenal Arifin Zaenul Muhlisin Zaenul Muhlisin

Title

Found 40 Documents
Search

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Title Search

Found 40 Documents Search

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Title

Found 40 Documents
Search