A5037701250- Advanced Photocatalysis Techniques
- Electrocatalysts for Energy Conversion
- TiO2 Photocatalysis and Solar Cells
- Hybrid Renewable Energy Systems
- Solar-Powered Water Purification Methods
- Fuel Cells and Related Materials
- CO2 Reduction Techniques and Catalysts
- Advanced battery technologies research
- Hydrogen Storage and Materials
- Solar Thermal and Photovoltaic Systems
- Silicon Nanostructures and Photoluminescence
- Carbon dioxide utilization in catalysis
- Semiconductor materials and devices
- Global Energy and Sustainability Research
- Water-Energy-Food Nexus Studies
- Chalcogenide Semiconductor Thin Films
- Catalytic Processes in Materials Science
- Adsorption and Cooling Systems
- Silicon and Solar Cell Technologies
- solar cell performance optimization
- Spacecraft and Cryogenic Technologies
- Electronic and Structural Properties of Oxides
- Gas Sensing Nanomaterials and Sensors
- Nanowire Synthesis and Applications
- Human Resource Development and Performance Evaluation
KU Leuven
2014-2024
Institute of Catalysis and Petrochemistry
2014-2020
The increasing global population amplifies the demand for food and energy. Meeting these demands should be a priority aligned with Sustainable Development Goals (SDGs). Photovoltaic (PV) systems are one of key technologies sustainable energy transition. However, PV farms space-intensive, conflicting other land-uses such as agriculture. Agrivoltaics (AV) offers dual-land-use solution by combining solar crop cultivation. Some pioneering AV production have been implemented in practice....
Abstract Synthetic methods that allow for the controlled design of well-defined Pt nanoparticles are highly desirable fundamental catalysis research. In this work, we propose a strategy allows precise and independent control particle size coverage. Our approach exploits versatility atomic layer deposition (ALD) technique by combining two ALD processes using different reactants. The areal density is tailoring number cycles trimethyl(methylcyclopentadienyl)platinum oxygen, while subsequent...
Solving the water scarcity problem by enhancing extraction from air technology.
Electrolytic formic acid synthesis delivers green at the right concentration for emerging applications.
Metal halide perovskites are actively pursued as photoelectrodes to drive solar fuel synthesis. However, currently, these photocathodes suffer from limited stability in water, which hampers their practical application. Here, we report a high-performance solution-processable photocathode composed of cesium formamidinium methylammonium triple-cation lead perovskite protected by an Al-doped ZnO (AZO) layer combined with Field's metal encapsulation. Careful selection charge transport layers...
Manganese oxide thin films were obtained by a combination of atomic layer deposition and post-deposition annealing, the viability these as film catalysts for solar hydrogen devices has been demonstrated.
A system is demonstrated that autonomously produces hydrogen gas using sunlight and outside air as the only inputs.
A vapor-fed solar hydrogen generator with KOH-doped poly(vinyl alcohol) anion exchange membrane flanked NiFe and NiMo catalysts is demonstrated.
Increasingly vast research efforts are devoted to the development of materials and processes for solar hydrogen production by light-driven dissociation water into oxygen hydrogen. Storage energy in chemical bonds resolves issues associated with intermittent nature sunlight, decoupling generation consumption. This paper investigates recent advances prospects that reaching market readiness. Future scenarios involving proposed a case is made systems producing from vapor present air, supported...
Hydrogen is a colorless compound to which symbolic colors are attributed classify it according the resources used in production, production processes, such as electrolysis, and energy vectors, solar radiation. Green hydrogen produced mainly by electrolysis of water using renewable electricity from an grid powered wind, geothermal, or hydroelectric power plants. For grid-powered electrolyzers tendency go larger reach gigawatt-scale. An evolution opposite direction integration photophysics...
Water splitting was performed in a photoelectrochemical cell (PEC) with water oxidation and hydrogen formation reactions two separate compartments. A photoanode consisting of carbon paper loaded TiO2 cathode made Pt dispersed on black spread also were fixed both sides Nafion® membrane electrically coupled via an external circuit. Anode compartments serpentine flow field operated either the liquid or vapour phase. Electrical current monitored chronoamperometry D2 from deuterated using mass...
Solar driven water splitting can be achieved by coupling electrolyzers with PhotoVoltaics (PV). Integration of both functions in a compact PhotoElectroChemical (PEC) cell is an attractive option but presents significant scientific challenges. In this work, the design single- and dual-compartment PEC cells for research purposes discussed. The fabrication separator-electrode assemblies important aspect, upscaling these architectures even to centimeter scale not trivial. layout new...
The development of active and stable earth-abundant catalysts for hydrogen oxygen evolution is one the requirements successful production solar fuels. Atomic Layer Deposition (ALD) a proven technique conformal coating structured (photo)electrode surfaces with such electrocatalyst materials. Here, we show that ALD can be used deposition iron cobalt phosphate electrocatalysts. A PE-ALD process was developed to obtain films without need phosphidation step. material acts as bifunctional...
A combined experimental-numerical approach was used to study transient phenomena occurring in a photoelectrochemical cell using membrane-separated porous TiO2-based photoanode and dark Pt-based cathode. The effects of three parameters (pH the anodic compartment, operating temperature, cathode compartment preconditioning with hydrogen) on photocurrent systematically investigated design experiments analysis variance. theoretical model developed able accurately reproduce predict measurements....
Advances in the synthesis and assembly of nanomaterials offer a unique opportunity to purposefully design nanoparticle structures for specific applications. Here 3D carbon nanotube are coated with BiVO<sub>4</sub> solar water splitting.
The concept of an all-gas-phase photoelectrochemical (PEC) cell producing hydrogen gas from volatile organic contaminated and light is presented. Without applying any external bias, contaminants are degraded produced in separate electrode compartments. system works most efficiently with pollutants inert carrier gas. In the presence oxygen, performs less but still significant photocurrents generated, showing can be run on air. purpose this study to demonstrate new application opportunities...
Monolithic solar water splitting devices consist of photovoltaic materials integrated with electrocatalysts and produce hydrogen by upon illumination in one device. Upscaling monolithic is obstructed high ohmic losses the electrolyte due to long ionic transport distances. A new design overcomes problem introducing micron sized pores a silicon wafer substrate coated electrocatalysts. porous device was simulated applying current corresponding ca. 10% solar-to-hydrogen efficiency. Porous...
Navigating the microclimatic environment for optimal control of water-from-air devices could be a challenge. An example such device is an air-based solar hydrogen production device. Such promises ability off-grid, easily deployable and modular on-site consumption. Novel analysis techniques, as wavelet transform coherence analysis, assist in better understanding microclimate which might function. The becomes complicated when system evaluated at level, especially it considered that performance...