Enhancing TiO2 Photoelectrode Performance: The Role of La Doping Using the Sol-Gel Process

Heca Journal of Applied Sciences, Journal Year: 2025, Volume and Issue: 3(1), P. 56 - 62

Published: March 24, 2025

Due to growing interest in renewable energy technologies, dye-sensitized solar cells (DSSCs) have emerged as promising alternatives conventional photovoltaics. This study explores the enhancement of titanium dioxide (TiO2) photoelectrodes through doping with lanthanum (La), a rare earth element known for its ability modify semiconductors' structural and electronic properties. La-doped TiO2 was synthesized using sol-gel method La concentrations ranging from 0 4 mol%. The resulting films were deposited onto substrates sintered at 600 °C 1 hour. Characterization techniques included X-ray diffraction (XRD), scanning electron microscopy energy-dispersive spectroscopy (SEM-EDS), UV-Vis spectrophotometry, Fourier-transform infrared (FTIR). XRD confirmed anatase phase appearance La2O₃ phases doping. smallest crystallite size (8.20 nm) lowest bandgap (3.31 eV) achieved mol% La, compared 3.52 eV undoped TiO2. SEM-EDS indicated uniform distribution, while FTIR revealed changes surface chemistry. These results suggest that doping, particularly mol%, can effectively enhance optical properties TiO2, making it candidate improved DSSC performance.

Language: Английский

Developing a Smart Implementation Framework for Blockchain-Based P2P Renewable Energy Trading in Indonesia: A Qualitative Analysis Approach

Heca Journal of Applied Sciences, Journal Year: 2025, Volume and Issue: 3(1), P. 63 - 76

Published: March 25, 2025

The shift towards decentralized and sustainable energy frameworks is progressively propelled by innovations in technology the imperative for democratization. Blockchain a viable approach facilitating peer-to-peer (P2P) trading, thereby diminishing dependence on intermediaries while augmenting transparency, security, efficiency within transactions. Nevertheless, application of blockchain-enabled trading continues to be constrained Indonesia due regulatory, technical, economic challenges. This study aims develop smart implementation framework integrating blockchain into P2P renewable Indonesia. A qualitative research employed, incorporating content analysis thematic policy documents, technical reports, stakeholder interviews. simulation model also designed evaluate feasibility, efficiency, scalability. findings highlight that can significantly enhance adoption direct exchanges among prosumers, improving grid resilience, reducing transaction costs. proposed outlines essential components such as contracts, digital tokens, ledgers, regulatory compliance mechanisms. Case studies from global implementations, including Power Ledger Australia LO3 Energy U.S., demonstrate viability blockchain-based trading. concludes has strong potential transform Indonesia’s landscape, successful requires supportive policies, infrastructure investment, public awareness. Future should focus optimizing contracts developing consensus mechanisms tailored market conditions.

Language: Английский

Sustainable Energy Integration in Geothermal Exploration: Conceptual Design and Innovation

Leuser Journal of Environmental Studies, Journal Year: 2025, Volume and Issue: 3(1), P. 27 - 35

Published: April 21, 2025

Geothermal drilling operations in remote areas are commonly powered by diesel generators, leading to high fuel consumption and substantial carbon emissions. This study explores the integration of a hybrid solar PV–diesel generator system enhance energy sustainability at geothermal base camp Indonesia. The design considers local renewable potential incorporates with existing equipment. strategy is evaluated through feasibility analysis considering efficiency, yield, environmental impact. Using Helioscope software for simulation load based on equipment specifications, results show that PV can supply up 35% daytime demand, reducing daily emissions 8% enhancing performance optimized sharing. Despite absence battery storage, demonstrates significant operational benefits, while also highlighting further improvements storage integration, smart control systems, targeted management.

Language: Английский