A5003640326- Cultural Heritage Materials Analysis
- Catalytic Processes in Materials Science
- Building materials and conservation
- Mineralogy and Gemology Studies
- Nanomaterials for catalytic reactions
- Advanced Photocatalysis Techniques
- Metal-Organic Frameworks: Synthesis and Applications
- Zeolite Catalysis and Synthesis
- MXene and MAX Phase Materials
- Pigment Synthesis and Properties
- Catalysis and Hydrodesulfurization Studies
- Covalent Organic Framework Applications
- Geochemistry and Geologic Mapping
- Iron oxide chemistry and applications
- Minerals Flotation and Separation Techniques
- Catalysis for Biomass Conversion
- Advanced Nanomaterials in Catalysis
- Chemical Synthesis and Characterization
- CO2 Reduction Techniques and Catalysts
- Carbon dioxide utilization in catalysis
- Archaeology and ancient environmental studies
- Catalysts for Methane Reforming
- Environmental Engineering and Cultural Studies
- Pacific and Southeast Asian Studies
- Pleistocene-Era Hominins and Archaeology
Bandung Institute of Technology
2019-2025
National Research and Innovation Agency
2024
University of Indonesia
2020
Dye-induced water pollution is a noteworthy environmental issue, mainly caused by industrial activities that utilize and release effluent-containing dyes, especially azo dyes. One frequently employed large-scale technique for removing dyes from photocatalysis degradation. The use of MXene-based catalysts as an advanced material holds promise in overcoming the limitations inherent previous due to its expansive surface area unique tunable properties. potential integrating with nanoparticles...
This research investigates the modification of γ−Al₂O₃ using ammonia, urea, and magnesium acetate to enhance its catalytic properties for hydrodemetallization (HDM) hydrodesulfurization (HDS). Structural modifications affected mineral composition, crystal size distribution, textural support, with boehmite sizes consistently ranging from 7 10 nm. Textural analysis indicated that alumina supports modified urea ammonia demonstrated enhanced characteristics, including elevated specific surface...
Since the prehistoric era, hematite has been known as a reddish color pigment on rock art, body paint, and decorating substances for objects discovered almost worldwide. Recently, studies about purple used in have done vigorously to investigate origin of itself. These previous indicate that differentiation crystallinity, crystal size, morphology, electronic structure can cause shift, resulting hematite. In this study, we conducted detailed study sintering temperature effects formation...
A series of hydrodesulfurization (HDS) NiMo supported on HY zeolites and γ-Al2O3 (NiMo/HY-γ-Al2O3) have been prepared. The appropriate amount HNO3 were necessary to optimize the textural properties acidity catalysts, allowing deep hydrodesulfurization. Moreover, best catalyst could significantly reduce concentrations dibenzothiophene (DBT) 4,6-dimethyl (4,6-DMDBT) 8.20 ppm (from 2000 ppm) 5.28 260 ppm), respectively. It also accelerate kinetics as indicated by enhanced rate constants DBT...
The aim of this study is to investigate the effect natural zeolites characteristics on adsorption capacity Pb 2+ from an aqueous environment. used were originated 3 regions in Indonesia. i.e. Bayah, Banten (coded as ZB) and two samples South Lampung ZL-1 ZL-2) Nanggung, Bogor (ZN). each zeolite evaluated through a series detailed analysis including XRD, FTIR, XRF, SEM N 2 physisorption. It was revealed that ZB, ZL-2 dominated by clinoptilolite (HEU) frameworks while major phase ZN mordenite...
Herein, Na2CO3 emerges as a superior precipitating agent for synthesizing ZnO adsorbent, demonstrating remarkable structural properties that dramatically enhance the H2S removal. precipitated by (ZnO-SC) exhibits highest breakthrough capacity at space velocity of 25,000 h⁻1, reaching 32.1 mg S/g while NH4OH (ZnO-AH) and commercial adsorbent (ZnO-Com) achieve capacities 2.4 7.1 respectively. Moreover, kinetic studies on deactivation have been conducted to obtain insights into behavior provide...
Hematite is one of the most stable oxide phases and has been used as a rock-art pigment material in prehistoric era. form ochre widely rock art, burial rites, cosmetics, decorations on pottery surfaces. several hues, ranging from red to black. The variety hues might arise due differences physicochemical properties hematite such crystallinity, crystallite size, morphology, electronic structure. pigments be originated pretreatment technique before application. Herein, we have conducted...
In late Pleistocene to Early Holocene, the form of cultures were cave dwellings accompanied by development Mesolithic technology, food gathering, as well spiritual needs in burials and works art. Gunung Sewu area is known "Prehistoric Metropolis", with plenty caves high potential archaeological remains. The culture dwelling generally characterized not only lithic, bone, shell tools, but also emergence burial practices “art” rock arts on walls. So far, data showed that are absence. This paper...
In this work, we employed a combined multi-analytical characterization, i.e., in situ calorimeter analysis, optical microscopy, elemental analyses of X-ray fluorescence (XRF) and scanning electron microscopy-energy dispersive spectroscopy (SEM-EDS), Raman (RS) to reveal the discoloration process on rock art Leang Tedongnge, Maros-Pangkep region, South Sulawesi. Tedongnge is home oldest figurative dated back 45,500 years. This work first introduction colorimetric analysis for assessment along...