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However, developing high\u2010performance piezocatalysts operable under low\u2010frequency conditions remains a huge demand and challenge. Herein, an innovative supramolecular\u2010driven hydrothermal strategy is proposed for precise morphology regulation and synthesis of ZnO\/CuO piezocatalysts. Using self\u2010assembled natural betulinic acid as a dynamic soft template, four types of ZnO\/CuO heterojunctions are successfully synthesized with progressively tuned morphologies, including rod\u2010like (RPs), airship\u2010like (APs), star\u2010like (SPs), and urchin\u2010like (UPs) particles, which exhibit enhanced sharp protrusions and highly bendable features. Structural modulation and ROS mechanistic analyses reveal a distinct piezoelectric trend of UPs &gt; SPs &gt; APs &gt; RPs. This implies that higher strain probability or larger strain gradients, resulting from increased sharp protrusions, lead to improved piezoelectric performance. Significantly, the UPs exhibit exceptional piezocatalytic activity under low\u2010frequency mechanical stirring, achieving a degradation rate constant of 40.8\u00a0\u00d7\u00a010\n                    <jats:sup>\u22123<\/jats:sup>\n                    min\n                    <jats:sup>\u22121<\/jats:sup>\n                    for dye rhodamine and an 88.4% bacterial inhibition rate at merely 60 ng\u00a0mL\n                    <jats:sup>\u22121<\/jats:sup>\n                    . This work not only provides a promising option for the application of commercial high\u2010performance piezocatalysts in environmental regeneration but also highlights the potential of supramolecular\u2010mediated morphology regulation strategies for designing advanced piezocatalysts adapted to diverse applications.\n                  <\/jats:p>","DOI":"10.1002\/smll.202507661","type":"journal-article","created":{"date-parts":[[2025,9,27]],"date-time":"2025-09-27T13:18:57Z","timestamp":1758979137000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":5,"title":["Engineering ZnO\/CuO Heterojunctions via Supramolecular Mediation Leading to Morphology\u2010Dependent High\u2010Performance Piezoelectric Catalyst"],"prefix":"10.1002","volume":"21","author":[{"given":"Jingwen","family":"Li","sequence":"first","affiliation":[{"name":"Key Laboratory of Natural Medicine Innovation and Transformation Henan University  Kaifeng 475000 P. R. 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