Iranian Nanotechnology Society International Journal of Nanoscience and Nanotechnology 1735-7004 21 3 2025 09 30 Novel Method for Synthesis of Janus MXene Nanosheets by Masking Starch 149 156 738699 10.22034/ijnn.2026.2066281.2683 EN Fatemeh Helmi Transport Phenomena & Nanotech. Lab (TPNT), School of Chemical Engineering, College of Engineering, University of Tehran Mahdieh Yavari Transport Phenomena & Nanotech. Lab (TPNT), School of Chemical Engineering, College of Engineering, University of Tehran 0000-0001-5507-4881 Esmail Yaghoubi-Azbari Transport Phenomena & Nanotech. Lab (TPNT), School of Chemical Engineering, College of Engineering, University of Tehran Mahdi Akbari Transport Phenomena & Nanotech. Lab (TPNT), School of Chemical Engineering, College of Engineering, University of Tehran Mojtaba Shariaty-Niassar Transport Phenomena & Nanotech. Lab (TPNT), School of Chemical Engineering, College of Engineering, University of Tehran 0000-0002-4477-8397 Journal Article 2025 07 19 MXene represents a highly promising class of two-dimensional materials characterized by its layered structure; however, the interlayer van der Waals forces result in aggregation of these NPs and limit their application . To address this challenge and enhancing their stability and applicability, strategies such as composite formation and surface modification are utilized. Notably, the transformation of MXenes into Janus structures has emerged as an effective strategy for improving functionality. Janus MXene nanosheets were synthesized via the Pickering emulsion method. In this method, one side of the MXene was masked with tapioca starch microspheres. Afterward, MXene was functionalized with dodecylamine (DDA), a hydrophobic agent. Subsequently, through thermal cycling (heat and sonication), the starch template was removed from the MXene surface. Then, Janus MXene nanosheets with an asymmetric structure are achieved. This study introduces a novel and cost-effective method for synthesizing hydrophilic/hydrophobic Janus MXene nanosheets. FTIR, Raman, XRD, and FESEM analyses collectively confirm the amphiphilic behavior and the two-dimensional structure of the synthesized Janus MXene nanosheets. This synthesis method is suitable and economical for Janus MXene production. https://www.ijnnonline.net/article_738699_a69b664638d3e418ca43b687678c723b.pdf