A5037744702- Advanced Photocatalysis Techniques
- Nanomaterials for catalytic reactions
- TiO2 Photocatalysis and Solar Cells
- Advanced Nanomaterials in Catalysis
- Adsorption and biosorption for pollutant removal
- Nanoparticles: synthesis and applications
- Graphene and Nanomaterials Applications
- Iron oxide chemistry and applications
- Catalytic Processes in Materials Science
- Metal Extraction and Bioleaching
- Extraction and Separation Processes
- Nanocomposite Films for Food Packaging
- Iron and Steelmaking Processes
- Electrochemical sensors and biosensors
- Carbon and Quantum Dots Applications
- Recycling and Waste Management Techniques
- Advanced Drug Delivery Systems
- Electrocatalysts for Energy Conversion
- Protein Interaction Studies and Fluorescence Analysis
- Phytochemicals and Medicinal Plants
- Dielectric properties of ceramics
- Magnesium Oxide Properties and Applications
- Curcumin's Biomedical Applications
- Catalysis and Hydrodesulfurization Studies
- Supercapacitor Materials and Fabrication
Sri Lanka Institute of Information Technology
2019-2025
University of Alabama
2018
Mesoporous silica nanoparticles (MSN) were synthesized using rice husk (RH) as the raw material via sol-gel pathway cetyltrimethylammonium bromide (CTAB) structure directing agent. Silica successfully functionalized with 3-aminopropyl triethoxysilane (APTES) in-situ and post functionalization methods. Synthesized characterized by X-Ray diffraction spectroscopy (XRD), scanning electron microscopy (SEM), fourier-transform infrared (FT-IR), thermogravimetric analysis (TGA)...
The release of dyes into normal water reservoirs has become a tremendous environmental problem and the development methods to remove such is essential. A novel photocatalyst was fabricated in which Cu doped TiO2 coupled with g-C3N4 (Cu-TiO2/g-C3N4) different weight percentages as 10, 30 50%, hydrothermally. Pure consisted both Anatase Rutile phases where slight lattice distortions were observed Cu-doped evidenced by XRD Raman analysis. present at 1.7% respective according XRF Spherical...
Abstract Polyethyleneglycol-coated biocompatible CuO–ZnO nanocomposites were fabricated hydrothermally varying Zn:Cu ratios as 1:1, 2:1, and 1:2, their antibacterial activity was determined through the well diffusion method against Gram-negative Escherichia coli , Pseudomonas aeruginosa Klebsiella pneumoniae, Gram-positive Staphylococcus aureus. The minimum inhibitory concentration bactericidal values of synthesized samples determined. Subsequently, time synergy kill assay performed to...
Photocatalytic activity of N doped with one transition metal is well known. This article reports the synthesis TiO2 nanoparticles only N, co-doped Fe, Cu and both Fe by sol-gel method. Their photocatalytic was evaluated for degradation methylene blue under sunlight. Nanoparticles were characterized X-ray diffractometry (XRD), Raman spectroscopy, transmission electron microscopy (TEM), scanning (SEM), diffuse reflectance UV–visible spectroscopy (DRS). XRD analysis revealed presence anatase...
High-purity (98.8%, TiO2) rutile nanoparticles were successfully synthesized using ilmenite sand as the initial titanium source. This novel synthesis method was cost-effective and straightforward due to absence of traditional gravity, magnetic, electrostatic separation, ball milling, smelting processes. Synthesized TiO2 99% pure. Also, highly corrosive environmentally hazardous acid leachate generated during leaching process effectively converted into a efficient visible light active...
Abstract Photocatalysts of TiO 2 –CuO coupled with 30% graphene oxide (GO) were hydrothermally fabricated, which varied the to CuO weight ratios 1:4, 1:2, 1:1, 2:1 and 4:1 reduced form –CuO/reduced (rGO) photocatalysts. They characterized using XRD, TEM, SEM, XPS, Raman, DRS technologies. composites –CuO/GO degrade methylene blue when persulfate ions are present. Persulfate concentration ranged from 1, 2, 4 8 mmol/dm −3 in highest activity 4.4 × 10 –2 7.35 min −1 was obtained for (1:4)...
Sustained release of curcumin from the polymeric carrier system chitosan, a natural biopolymer material derived chitin originated shrimp shell waste, was studied. Six kinetic models, zero order, first Korsmeyer–Peppas (KP), Peppas – Sahlin (PS), Higuchi, and Hixson–Crowell, were applied to study drug kinetics. The mechanism curcumin-chitosan composite evaluated by changing pH, ionic strength media, concentration. KP PS models selected among studied investigate chitosan based on R2 values (R2...
Dyes in wastewater are a serious problem that needs to be resolved. Adsorption coupled photocatalysis is an innovative technique used remove dyes from contaminated water. Novel composites of TiO
Fabrication of chitosan and ilmenite sand-based novel photocatalysts through the catalytic graphitization is reported. Nanocomposites consisted TiO2, Fe2O3 Fe nanoparticles dispersed on a nitrogen-doped graphitic carbon framework. The surface area, pore volume macropore structure matrix disturbed by heterogeneously distributed nanoparticles. extent expanded with increasing metal loading as indicated variation in ID/IG ratio. nanomaterial's consists Fe3+ Ti4+, graphitic, pyridinic pyrrolic...
Hierarchically porous nitrogen-enriched carbon materials synthesized by polymerization of sucrose and urea (SU) were activated KOH H3PO4 (SU-KOH SU-H3PO4, respectively). Characterization was undertaken the tested for their ability to adsorb methylene blue (MB). Scanning electron microscopic images along with Brunauer–Emmett–Teller (BET) surface area analysis revealed presence a hierarchically system. X-ray photoelectron spectroscopy (XPS) confirms oxidation SU upon activation H3PO4. The best...
<p>Anthropogenic climate and environmental changes increasingly threaten the sustainability of life on Earth, hindering sustainable development human societies. These detrimental ecological are driven by activities that have elevated atmospheric levels greenhouse gases toxic substances, increased inorganic organic pollutants in water bodies, led to accumulation solid waste soils. Over next two three decades, impacts change, pollution, soil contamination expected intensify, posing...
Heterogeneous photocatalysis is an attractive alternative route to enhance the degradation of environmental pollutants. In this work, we have fabricated Fe2TiO5/TiO2 binary nanocomposites using natural ilmenite via bottom up approach. Synthesized were characterized by X-ray diffractometry, fluorescence, transmission electron microscopy, Raman spectroscopy, diffuse reflectance UV–Visible scanning and photoelectron spectroscopy. These nanoparticles are in range 40–70 nm type I heterostructure...
Ilmenite is a naturally available mineral that highly applicable in the synthesis of pure TiO2. Titania mainly presents four polymorphs as rutile, anatase, brookite and TiO2–B. could be mined from minerals such ilmenite, leucoxene rutile among which ilmenite main source. Ball milling mechanical activation method used before subjecting to chemical treatment methods produce titanium based materials. Effect time, intensity, atmosphere, introduction reducing agents on particle size, surface...
The study examined the sustained release of neem from polymeric carrier system chitosan by varying drug content, ionic strength medium, and pH. Six different kinetic models, i.e., Korsmeyer-Peppas (KP), Peppas-Sahlin (PS), Higuchi, Hixson-Crowell, Zero order, First order were used to investigate kinetics. Based on R2 values, KP PS models chosen mechanism biopolymer. values found for model parameters n m in differ noticeably, suggesting that Fickian diffusion Case II relaxation are important...
Photocatalysis is an attractive widely used environmental remediation technique. Ternary (α-Fe2O3/Fe2TiO5/TiO2) and binary (Fe2TiO5/TiO2) nanocomposites were successfully synthesized by using natural ilmenite sand as the raw material. The characterized microscopic spectroscopic analytical techniques. Both catalytically active for photodegradation of methylene blue upon irradiation a light source (LED sunlight). visible absorption both composites was improved presence Fe2TiO5 α-Fe2O3 which...
The advanced oxidation process is a prominent method available to remove dyes released normal water reservoirs alleviate scarcity. We report the fabrication of novel g-C3N4/Fe2TiO5/Fe2O3 using natural ilmenite sand as precursor metallic semi-conductors exploration heterostructure for photodegradation methylene blue under sunlight. Ternary composites were synthesized by varying g-C3N4 with respect Fe2TiO5/Fe2O3 and where component was varied 8, 24 40%, constant material. hybridization three...
Hematite (α-Fe2O3) and pseudobrookite (Fe2TiO5) suffer from poor charge transport a high recombination effect under visible light irradiation. This study investigates the design production of 2D graphene-like r-GO/GO coupled α-Fe2O3/Fe2TiO5 heterojunction composite with better separation. It uses simple sonochemical hydrothermal approach followed by L-ascorbic acid chemical reduction pathway. The advantageous band offset (TF) nanocomposite between α-Fe2O3 Fe2TiO5 forms Type-II at...
Amaranthus viridis L., belongs to the family Amaranthaceae is a perennial edible plant, and traditionally used for medicinal treatments in South Asia. Despite significant uses of availability scientific data on plant's biological efficiency lacking domain. There higher potential demand dehydrated value-added products from local international market. Hence, objective research was determine impact pretreatments dehydration nutritional composition, phytochemical profile, antioxidant activity,...