Publications

2026

• Fluorescence lifetime imaging microscopy of lignocellulosic biomass: principles, applications, and related techniques
  
  • Remy Noah
  • Déjardin Annabelle
  • Terryn Christine
  • Paës Gabriel
  Reviews in Environmental Science and Bio/technology, Springer Verlag, 2026, 25 (2), pp.24. Lignocellulosic biomass is a renewable carbon source that could help replacing fossil carbon feedstocks which cause many ecological concerns. However, to improve its bioconversion, the complex microstructure and chemistry of biomass needs thorough characterization. Emerging techniques like Fluorescence Lifetime Imaging Microscopy are particularly promising and this review aims to cover all aspects related to the use of lifetime microscopy for lignocellulosic biomass analysis. First, the mechanisms involved in fluorescence emission and atomistic properties influencing fluorescence lifetime are detailed. Then the three main instrumentations of lifetime microscopy are compared and the decay fitting function of fluorescence lifetime is presented. Numerous examples exposing the relevance of fluorescence lifetime imaging microscopy for biomass analysis are provided. Lifetime microscopy allows for cellulose, hemicelluloses, and lignins differential localization and syringyl / guaiacyl lignin ratio mapping. Fluorescence lifetime imaging microscopy can also provide insights on the effects of pretreatment and hydrolysis on the microstructure and chemistry of lignocellulosic biomass. Additionally, lifetime microscopy can inform on growth conditions like geographical origin or reaction wood formation as a response to gravitropic perturbations. Also, Förster Resonance Energy Transfer, being able to explore lignocellulosic biomass’s interactions with molecular probes, can be based on fluorescence imaging as well. Finally, other fluorescence-lifetime-related techniques having the potential to be implemented on lignocellulosic biomass are discussed. (10.1007/s11157-026-09774-6)
  DOI : 10.1007/s11157-026-09774-6
• Optimizing fertilizer use for sustainable crops with Agrivoltaics in Mediterranean climates
  
  • Rapella Lia
  • Viovy Nicolas
  • Faranda Davide
  • Drobinski Philippe
  npj Sustainable Agriculture, Springer Nature, 2026, 4, pp.3. Agrivoltaics (AV), a fast-growing technology integrating photovoltaic panels with agriculture, can offer the dual benefit of clean energy and crop yield gains, especially in the Mediterranean basin. However, its interaction with fertilizers -key for crops productivity but major contributors to environmental degradation- remains unexplored. This study applies a regional AV model over the Iberian Peninsula (1991–2020) using the ORCHIDEE land surface model to assess AV under varying synthetic fertilizers scenarios. We examine its effects on crop productivity, nitrogen and water use efficiency, and fertilizer-induced greenhouse gas emissions. Results show that AV can enhance productivity and reduce environmental costs, particularly in water-scarce conditions. However, trade-offs arise at critical fertilizer levels varying by crop type and climate. A region-specific strategy that considers climate, crop responses, and environmental impacts is essential to optimize AV sustainability potential. (10.1038/s44264-025-00112-x)
  DOI : 10.1038/s44264-025-00112-x
• Ni-NbO_x Bifunctional Catalysts for Selective Hydrodeoxygenation of m-Cresol to Toluene
  
  • Abreu Teles Camila
  • Ciotonea Carmen
  • Palacio Ruben
  • Lopez Diana
  • Royer Sébastien
  • Richard Frédéric
  Molecular Catalysis, Elsevier [2017, vol. 427-....], 2026, 588, pp.115516. The catalytic performances of a series of Ni supported on mesoporous silica (SBA-15) and niobia, as well as Ni-NbO_x dispersed on SBA-15 were evaluated for the hydrodeoxygenation (HDO) of m-cresol at 300 °C under atmospheric pressure. Under the reaction conditions, hydrogenation and C-C hydrogenolysis pathways yielding only oxygenated products dominated over the monometallic Ni catalyst. In contrast, the Direct DeOxygenation pathway (DDO) leading to toluene was significantly promoted when Ni was in contact with oxophilic NbO_x surface. Tuning the Ni-Nb ratio on silica revealed a remarkable enhancement of the DDO rate constant. Indeed, the kinetic rate constant determined over 5Ni5Nb/SBA was about 11 times higher than that measured on the catalyst containing only the Ni phase. This enhanced performance can be attributed to the formation of well-dispersed Ni-NbO_x interfacial sites, where the hydrogenation capability of Ni associate with the oxophilic character of Nb⁵⁺/Nb⁴⁺ species allowing to a more efficient activation of the C-O bonding and promoting the DDO reaction pathway. These results offer valuable insights for the rational design of selective catalysts for the transformation of lignin-derived bio-oils into aromatic hydrocarbons. (10.1016/j.mcat.2025.115516)
  DOI : 10.1016/j.mcat.2025.115516