Kusumandari Kusumandari

Eco-friendly carbon quantum dots from agro-waste to enhance TiO2 photocatalytic and antibacterial efficiency

Fadhillah Choirunnisa, Khirunisa Mufidah, Erma Surya Yuliana, Suriati Sufian et autres

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Fabrication and Surface Characterization of Carbon Dot/PAN Nanofibers Modified Screen-Printed Electrode and Its Impact on Electrochemical Behavior

Zulfa Nailil Muna, Eldiana Rully Arsetiyani, Ridho Kurniawan, Muhammad Rofii Ashari et autres

Analysis of Dose Distribution Alpha and Secondary Particles in Therapy Alpha for Glioblastoma Cancer Using MCNP6 Software

Sheila Agustina, Suharyana Suharyana, Kusumandari Kusumandari, Fajar Arianto

The alpha therapy modeling was performed for the treatment of glioblastoma brain cancer using MCNP6 software. The simulation used a head and neck phantom geometry, with a spherical shape of the radiation direction of the cancer cells with a radius of one …

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IDENTIFIKASI REACTIVE OXYGEN SPECIES PADA PLASMA DIELECTRIC BARRIER DISCHARGE KONFIGURASI MESH-COPPER YANG DIRANGKAI SINGLE DAN DOUBLE MENGGUNAKAN OPTICAL EMISSION SPECTROSCOPY

Ahmad Faruq Abdurrahman, Ayu Aprilia, Intan Zahar, Kusumandari Kusumandari et autres

Penelitian ini bertujuan untuk mengidentifikasi reactive oxygen species (ROS) yang dihasilkan oleh plasma dielectric barrier discharge (DBD) pada konfigurasi rangkaian single dan double menggunakan Optical Emission Spectroscopy (OES). Variasi reaktor DBD digunakan untuk mengevaluasi spektrum emisi plasma. Hasil menunjukkan bahwa intensitas spektrum …

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Microstructural transformation of GO to rGO by ascorbate acid green-agent enhanced using sonication method

Masruroh Masruroh, Freygieon Ogiek Rizal Sukma, Kormil Saputra, Nandang Mufti et autres

Abstract Reduced graphene oxide (rGO) was successfully synthesized from graphene oxide (GO) using ascorbic acid as a reducing agent, combined with a sonication process to improve microstructural transformation and enhance optical properties. The primary objectives of this study were to evaluate the …

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The Impact of nitrogen doping variations on the effectiveness of TiO₂ as a photocatalyst for methylene blue degradation

Kusumandari Kusumandari, Osi Dwi Wijayanti, Yofentina Iriani, Teguh Endah Saraswati et autres

Abstract TiO₂-N, with nitrogen sourced from urea, was successfully synthesized using the sonication method. Variations in the mass ratio of urea in TiO₂-N (8:2, 6:4, 4:6, 2:8) were conducted to determine their effects on structural properties, functional groups, morphology, bandgap energy, and …

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Characteristic Improvement of Reduced Graphene Oxide From Battery Waste Synthesized Using Modified Hummer’s Method

Kusumandari Kusumandari, Latifah Syahrotul Karimah, Rosalia Imroatul Mufidah, Nurdiyantoro Putra Prasetya et autres

In this study, the reduced graphene oxide (rGO) using the modified Hummers method from battery waste materials has been successfully carried out. The results obtained were compared with the conventional Hummers method. XRD analysis showed that the characteristic peaks of graphene oxide …

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Annealing temperature modify of crystalline structure, magnetic properties and antibacterial performance in nickel substituted cobalt ferrite nanoparticles utilizing natural-fine-sediment

Laksmita Farah Bestari, Lathifah Iqlimatussholihah, Nurdiyantoro Putra Prasetya, Kusumandari Kusumandari et autres

This study details the nickel-substituted cobalt ferrite nanoparticle employing natural fine sediment (NiCFO-fs) annealing temperature dependency of crystalline and magnetic characteristics. The NiCFO-fs nanoparticles were prepared by the coprecipitation method with varying annealing temperatures (200-500°C with increment of 100°C for five hours). …

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Enhancement of Photocatalytic Properties of Carbon Dot Supported by AgNPs for Methylene Blue Degradation

Kusumandari Kusumandari, Riski Intan Prasasti, Isnaeni Isnaeni

Efforts to degrade liquid waste have been carried out, one of which is using photocatalyst materials.In this work, Carbon Dots (CDs) in combination with silver nanoparticles (AgNPs) were used to degrade methylene blue (MB).CDs were synthesized from urea with added citric acid …

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TiO2-N/Polystyrene photocatalyst-combined Corona Plasma Treatment for Methylene Blue Degradation

Kusumandari Kusumandari, Ahmad Qusnudin, Teguh Endah Saraswati, Davit Dhruv

This study employed the corona plasma method combined with TiO2-N/PS photocatalyst to degrade dye pollutants. The plasma reactor consisted of two needle-shaped stainless steel electrodes connected to a voltage of 8 kV. Methylene blue (MB) solution was used as a model pollutant …

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One-step synthesis of TiO 2 /Fe 3 O 4 /C hydrophilic magnetic nanocomposites using the magnetized submerged arc discharge method

Teguh Endah Saraswati, Annisa Dinan Ghaisani, Kusumandari Kusumandari

This study investigates the production of TiO2/Fe3O4/C hydrophilic magnetic nanocomposites produced via a one-step novel method using the submerged arc discharge method applied in liquid media of ethanol and ethanol–ammonia under the influence of external magnetic field. The magnetized submerged arc discharge …

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The effect of ozone concentration on degradation of methylene blue using dielectric barrier discharge plasma

Ahmad Qusnudin, Kusumandari Kusumandari, Teguh Endah Saraswati

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