A5078478268- Heavy Metal Pollution Remediation
- Natural Products and Applications
- Agricultural and Biological Research
- Food and Agricultural Sciences
- Plant Growth and Agriculture Techniques
- Graphene research and applications
- Medicinal Plant Research
- Geotechnical and construction materials studies
- Advancements in Battery Materials
- Graphene and Nanomaterials Applications
- Water Quality Monitoring and Analysis
- Engineering and Technology Innovations
- Zeolite Catalysis and Synthesis
- Blockchain Technology in Education and Learning
- Geochemistry and Elemental Analysis
- Supercapacitor Materials and Fabrication
- Geological and Geophysical Studies
- Recycling and Waste Management Techniques
- Carbon Nanotubes in Composites
- Microencapsulation and Drying Processes
- Geochemistry and Geologic Mapping
- TiO2 Photocatalysis and Solar Cells
- Carbon and Quantum Dots Applications
- Management and Optimization Techniques
- Food composition and properties
Tanjungpura University
2015-2024
Universitas Gadjah Mada
2023-2024
Facile synthesis of reduced-graphene oxide (rGO) has been conducted in this study using the extract Caesalpinia sappan L. as a green reducing agent. Graphite sheets were first exfoliated an improved Hummer process to produce graphene (GO). Then, was obtained by GO with at various concentrations autoclave hydrothermal process. Analytical methods such XRD, Raman spectroscopy, FTIR, SEM-EDX, TEM, UV–visible absorption, TG-DTA, and zeta potential value used characterize graphite, GO, rGO...
The use of reduced graphene oxide (rGO) as an adsorbent has challenges to overcome. Although rGO a large surface area, its solubility in water is very low. In this study, bentonite added reduce the mass and increase dispersibility adsorbent. rGO-bentonite (rGOB) was characterized by XRD, FTIR, SEM-EDX, XRF. adsorption activity tested Pb ion solution, derived from AAS. XRD pattern GO, rGO, rGOB 2q were observed at 10.90°, 24.88°, 26.66°, respectively. FTIR spectrum showed that GO C=C, C-O,...
Analysis of particle size silica was extracted from rocks Ketapang Regency, West Kalimantan based on characterization using scanning electron microscope (SEM) have been carried out. The analysis performed to determine the change in extraction without and with activation acid solution. SEM image processing a 10 μm scale at 350x magnification through image-J software distribution. results showed that area diameter were 3,935 μm2 3,147 (without activation) 4,28 3,267 (activated) respectively.
This study was conducted to investigate the use of TiO 2 immobilized on SiO (TiO -SiO ) in a photocatalytic process degrade toxic industrial waste, phenol, linear alkylbenzene sulfonate (LAS), and Cr(VI), which is dangerous for humans environment. Titanium dioxide ), as photocatalyst, can make solution become turbid. Thus, used increase possibility ultraviolet (UV) transmission. The phenol LAS levels were measured with Indonesian National Standard (INS) while Cr(VI) level determined...
Metilen biru (MB) merupakan bahan pewarna tekstil yang banyak digunakan di industri. Fotokatalisis dapat untuk mendegradasi struktur senyawa MB kompleks tersebut. Faktor penting dalam fotokatalisis adalah peran dari katalis, hal ini. reduced graphene oxide (rGO) telah berhasil disintesis dengan memodifikasi metode Hummer. Reduced dikompositkan titanium oksida (TiO2) karena orbital d-π pada TiO2–rGO akan saling tumpang tindih sehingga eksitasi elektron terjadi secara berulang menekan...
Tempurung kelapa mengandung lignin, selulosa, dan hemiselulosa, yang dapat dimanfaatkan sebagai bahan pembuatan karbon. Penelitian ini bertujuan untuk mengetahui karakteristik karbon aktif (KA) magnetik (KAM) dibuat dengan variasi massa :oksida besi (KA:OB) 1:1, 2:1 3:2 serta uji kinerjanya dalam mengadsorpsi ion Pb(II). Tahapan penelitian dimulai dari pirolisis tempurung (t=2 jam, T=230oC) hingga menjadi selanjutnya diaktivasi larutan natrium bikarbonat (soda kue) 4% perendaman 24 jam...
The use of TiO2 in the slurry system for photocatalytic process has disadvantages. It causes resistance UV transmission because it is cloudy and difficulty obtaining catalyst at end process. Therefore, an attempt to overcome this was conducted by compositing on SiO2. Furthermore, carbon material can be used as a support TiO2-SiO2, so that mixed materials photocatalyst. methods synthesis sol-gel method varying composition TiO2-SiO2/graphite, which 1:1; 1:2; 2:1. obtained characterized FTIR,...