Jiang, YueZhang, JiajunMa, HongyangZhou, ShujieLin, Hsun YenMofarah, Sajjad S.Lockrey, MarkLu, TengRen, HangjuanZheng, XiaoranGuanwan, MichaelHuang, SuchenHuang, Yu ChunZhuo, FenglinJi, DaliHart, Judy N.Liu, YunWu, Jyh MingAshokkumar, MuthupandianWang, DanyangKoshy, PramodSorrell, Charles C.2025-05-232025-05-231616-301Xhttp://www.scopus.com/inward/record.url?scp=85218825881&partnerID=8YFLogxKhttps://hdl.handle.net/1885/733752313The catalytic conversion of bioethanol to ethylene (C2H4) and acetylene (C2H2) offers a transformative approach to sustainable production of two industrial cornerstones for organic compound and polymer syntheses, thereby offering significant economic and environmental advantages. In contrast, current methods for the synthesis of these C2 hydrocarbons rely on energy- and carbon-intensive processes that require high temperatures and pressures. The present work addresses these limitations with a novel, low-energy, bioethanol-conversion strategy operating at room temperature and ambient pressure using sono-piezo-photocatalysts. A novel heterostructure of graphene oxide fragments (GO) and sodium bismuth titanate (NBT) within a core-shell microstructure achieved outstanding C2H4 and C2H2 production rates of 134.1 and 55.5 µmol/g/h, respectively. The conversion mechanism is driven by (1) bubble collapse during ultrasound irradiation, generating localized high temperatures (≈4000 K) and pressures (≈100 MPa), and (2) piezo-photocatalytic tuning of GO/NBT by enhanced charge separation and transfer. DFT simulations revealed detailed sono-piezo-photocatalytic conversion pathways, showing significant reductions in energy barriers for C2H4 (22.0 kcal mol−1) and C2H2 (48.0 kcal mol−1) formation. These findings emphasize the critical role of the catalyst in cleaving both C─H and C─O bonds effectively, leading to the desired product formation.The authors are pleased to acknowledge the provision of experimental resources by Prof. Rose Amal, School of Chemical Engineering, UNSW Sydney, and EXAFS technical support by Dr. Xun Geng, the University of Sydney. The authors also acknowledge the financial support of Vecor Technologies Pty. Ltd. and funding from the Australian Traiblazer for Recycling and Clean Energy (ATRaCE) program and the subsidised characterization facilities provided by the Mark Wainwright Analytical Centre at UNSW Sydney. T.L. and Y.L. thank the Australian Research Council (ARC) for the funding support (DP200100159, FL210100017, DP230100462, and DE240100032).16en© 2025 The Author(s).ambient-condition catalysisbioethanol conversionC hydrocarbons (ethylene, acetylene)ferroelectric/graphene oxide hybrid materialssono-piezo-photocatalysis202510.1002/adfm.20242578485218825881