Project Overview
BEAGLE is an innovative research project focused on transforming agro-industrial waste into high-value materials and energy solutions through advanced photocatalysis. By combining circular economy principles, materials chemistry, and solar-driven processes, the project aims to convert biomass waste into functional nanomaterials and sustainable energy carriers.
At its core, BEAGLE develops biomass-derived photocatalysts capable of harvesting sunlight to drive chemical reactions, mimicking natural photosynthesis. This approach opens new pathways for producing hydrogen fuel, valuable chemicals, and clean water from waste resources
Vision
The vision of BEAGLE is to establish a closed-loop, circular strategy in which waste is not discarded but transformed into functional materials and energy.
By using agricultural residues such as rice husks to create advanced nanomaterials, BEAGLE demonstrates how waste streams can become technological resources, enabling a transition toward a climate-neutral and resource-efficient society
Scientific Approach
BEAGLE integrates expertise in materials synthesis, spectroscopy, photocatalysis, and computational modelling to design next-generation photocatalysts.
The project focuses on:
- Carbon Quantum Dots (CQDs) derived from biomass waste
- Hybrid systems combining CQDs with g-C₃N₄ and TiO₂
- Advanced spectroscopic studies of charge carrier dynamics
- Computational modelling to understand and predict material performance
This multi-scale approach enables a rational design of photocatalysts, linking structure, electronic properties, and catalytic activity.
Key Objectives
The project is built around three main objectives:
- Design and optimize biomass-derived photocatalysts
- Produce hydrogen using solar-driven processes
- Develop photocatalytic membranes for water purification
Together, these goals address critical challenges in energy, environment, and sustainability, creating a unified platform for waste valorization
Applications
BEAGLE targets multiple high-impact applications:
- Green hydrogen production from biomass-derived substrates
- Conversion of waste into valuable chemicals
- Water purification and pollutant degradation
- Advanced nanomaterials for optoelectronics and sensing
These applications highlight the versatility of the developed materials, extending beyond the immediate scope of the project.
Impact
BEAGLE contributes to the transition toward a circular and sustainable economy by:
- Reducing waste through valorization of agricultural residues
- Lowering environmental impact via solar-driven processes
- Enabling low-cost, scalable catalytic technologies
- Supporting the development of a hydrogen-based energy system
The project also fosters strong interaction between academia, industry, and society, ensuring that scientific advances translate into real-world solutions .
Consortium
BEAGLE is carried out by a multidisciplinary team across:
- University of Pavia (coordination and materials chemistry)
- University of Bari (spectroscopy and device studies)
- CNR-SCITEC Perugia (computational modelling)
The consortium combines experimental and theoretical expertise, enabling a fully integrated research approach from materials design to application.
Why BEAGLE Matters
BEAGLE addresses one of the most pressing global challenges: how to transform waste into resources while reducing environmental impact.
By bridging materials science, chemistry, and sustainability, the project aims to deliver:
- New scientific knowledge
- Breakthrough materials
- Scalable green technologies
Ultimately, BEAGLE demonstrates how innovative chemistry can drive systemic change toward a more sustainable future.
Main Results
The BEAGLE project has successfully demonstrated the feasibility of transforming biomass waste into functional photocatalytic systems for energy and environmental applications.
A key achievement is the development of a reliable and reproducible synthesis protocol for Carbon Quantum Dots (CQDs) derived from agricultural residues such as rice husks. These nanomaterials were obtained with high purity (silica-free), controlled size (~5 nm), and well-defined optical properties, providing a robust platform for further material design .
Building on this, the project advanced the design of hybrid photocatalytic composites by integrating CQDs with semiconductors such as TiO₂ and g-C₃N₄. These materials showed:
- Improved light absorption and charge separation
- Tunable photophysical properties
- Enhanced photocatalytic performance compared to individual components
Photocatalytic tests confirmed the capability of these systems to generate hydrogen under solar irradiation, including from biomass-derived substrates, demonstrating a concrete pathway toward sustainable fuel production. Hydrogen evolution rates in the range of 100–200 μmol h⁻¹ g⁻¹ were achieved under realistic conditions .
In parallel, BEAGLE developed photoactive membranes by embedding CQD-based composites into polymer matrices (e.g., PVDF, Nafion). These membranes exhibited:
- Up to 82% degradation of organic pollutants (e.g., methylene blue) within 90 minutes
- Good stability and reusability
- Strong potential for low-energy water purification systems
A major scientific outcome of the project is the identification of a synergistic effect between CQDs and semiconductor matrices, which enhances photocatalytic efficiency through:
- Improved charge carrier separation
- Reduced electron–hole recombination
- Extended visible-light absorption
These mechanisms were supported by advanced computational modelling, which revealed favorable band alignment, interfacial electronic coupling, and the formation of new energy states that facilitate charge transfer processes .
Finally, the project achieved a high level of maturity by integrating experimental and theoretical approaches, enabling a clear understanding of structure–property–performance relationships and guiding the rational design of next-generation photocatalysts