ReviewPublished 21 August 2026Nanostructured electrocatalysts for zero-emission green hydrogen production: from atomic-level design to scalable water electrolysisSyed Shaheen Shah · Tauqir Ahmad · Sidra Khalid · Sikandar Khan · Sami Ullah · Qaiser Khan · Md. Abdul AzizFrontiers in Catalysisdoi 10.3389/fctls.2026.1914047