The article discusses the challenges and advancements in the field of photocatalysis, particularly focusing on the limitations of solar-driven photocatalysis in efficiently producing hydrogen and removing pollutants like tetracycline. While solar-driven photocatalysis is acknowledged for its green stability, the efficiency is hindered by factors such as intermittent solar energy and rapid recombination of electron-hole pairs. Research on piezoelectric materials has been driven by the need for lead-free alternatives due to restrictions on lead usage globally. The article highlights the potential of ferroelectric materials in enhancing photocatalysis through internal electric fields, improving carrier separation, and promoting REDOX reactions. The proposed photo-piezoelectric synergistic technology aims to enhance the efficiency of photocatalysis by combining stress-based approaches with materials like Bi2Fe4O9 (BFO) and BiOI. By synthesizing Bi2Fe4O9 to overcome limitations of materials like BiFeO3, the technology seeks to boost carrier transport and inhibit carrier recombination at interfaces. The article emphasizes the use of the S-scheme heterojunction to drive induced internal electric fields and promote charge transfer for improved photocatalytic performance. By leveraging the piezoelectric potential of materials like BFO and the exceptional sensitivity to visible light of BiOI, the technology aims to address issues like limited oxidation capacity and high recombination rates of photogenerated electron-hole pairs. The development of the photo-enhanced BFO/BiOI S-scheme heterostructure through the self-assembly hydrothermal method showcases a potential solution to these challenges, indicating a promising direction for advancing photocatalysis.