Dear Colleagues,

In an era characterized by escalating energy demand, environmental concerns, and the urgent need for sustainable development, the exploration of alternative sources of energy has gained paramount significance. The ACE journal's scope encompasses investigations spanning chemistry, biology, materials science, and related engineering disciplines. The special issue on "Trends in Biofuel and Bioenergy: Sustainable and Alternative Sources of Energy" serves as a dedicated platform for delving into the dynamic landscape of biofuels and bioenergy. It offers insights into their emerging trends, innovative technologies, and transformative potential within the realms of chemistry, biology, materials science, and associated engineering sectors.

In light of this specialized context, we extend a cordial invitation for contributions to our special issue, with a specific emphasis on original research. Topics of interest for this special issue include but are not limited to:

• Advanced Biofuel Production Pathways: Exploring novel chemical processes for the efficient production of advanced biofuels, such as bioethanol, biobutanol, and renewable diesel, with enhanced yields and reduced environmental impact.

• Catalytic Upgrading of Biomass: Investigating catalytic techniques and chemical reactions for converting lignocellulosic biomass into valuable biofuels and platform chemicals, focusing on catalyst design and optimization.

• Nanomaterials in Bioenergy Systems: Exploring the role of nanomaterials in enhancing biofuel production and bioenergy storage, including applications in catalyst design, energy capture, and electrode materials for bioelectrochemical systems.

• Electrochemical Conversion of Biomass: Investigating electrochemical approaches for the direct conversion of biomass into biofuels and platform chemicals, focusing on reaction mechanisms and optimization of electrode materials.

• Chemical Characterization of Biofuel Components: Utilizing advanced analytical techniques to characterize the chemical composition of biofuel feedstocks, intermediates, and end products, aiding in process optimization and quality control.

• Carbon Capture and Utilization in Bioenergy: Exploring chemical strategies for capturing and utilizing carbon dioxide emissions from bioenergy processes, enhancing overall sustainability and reducing greenhouse gas impact.

• Advanced methods for the production of fourth generation biofuel

• Alternative methods for the bioenergy productions