Diatom Biosilica: Extraction Techniques and Applications in Energy Storage and Conversion Devices

Area of Science:

• Materials Science
• Biotechnology
• Energy Storage

Background:

• Traditional synthetic silica materials for energy applications face challenges in cost and sustainability.
• Diatom biosilica presents a sustainable alternative due to its unique porous structure, high surface area, and tunable surface chemistry.

Purpose of the Study:

• To review the biological origin, extraction, and purification of diatom biosilica.
• To evaluate diatom biosilica as a functional material for energy conversion and storage.
• To explore strategies for enhancing biosilica performance through hybridization and discuss future research directions.

Main Methods:

• Critical evaluation of biological origin and extraction techniques (chemical, thermal, plasma-assisted, hydrothermal liquefaction, hybrid).
• Analysis of physicochemical characteristics of diatom biosilica.
• Investigation of hybridization strategies with carbon nanomaterials, metal oxides, and conductive polymers.

Main Results:

• Diatom biosilica possesses advantageous properties like hierarchical porosity and high surface area for energy applications.
• Hybridization strategies show potential for improving structure-function relationships in biosilica-based energy materials.
• Challenges in scalability, morphology control, and interface engineering were identified.

Conclusions:

• Diatom biosilica is a promising sustainable nanomaterial for advanced energy and environmental systems.
• Bioengineering approaches and application-driven design are crucial for future development.
• Further research is needed to overcome challenges and realize the full potential of biosilica in energy technologies.