Sankar Das is a highly cited materials chemist and Research Fellow at Nanyang Technological University, internationally recognized for his impactful contributions to nanomaterials, photocatalysis, electrocatalysis, and energy‐conversion research. With 891 total citations, an h-index of 17, and an i10-index of 20, his scholarly influence reflects both sustained productivity and high global relevance. His research spans material chemistry, nanoparticle design, catalytic systems, and environmental remediation, with a strong emphasis on light‐driven processes and clean energy technologies. Among his most cited works are pioneering studies on hierarchical MnO₂ nanocomposites for solar‐enhanced photocatalysis, halloysite nanotubes for isotope‐selective atmospheric CO₂ capture, CdS nanorods for LED‐driven antibiotic degradation, and Cu‐doped InP/ZnS quantum dots for visible‐light hydrogen evolution, several of which have individually received close to or over 100 citations. His investigations into doped metal oxides, intermetallic catalysts, and clay‐based nanocomposites have significantly advanced electrocatalytic oxygen evolution, toxic metal adsorption (Hg, As), and pollutant degradation. Dr. Das has also contributed to breakthrough methodologies for CO₂ trapping, moisture‐induced isotopic separation, and surface homojunction engineering in g-C₃N₄ for sacrificial‐agent‐free photocatalysis. His publication record highlights consistent collaboration across chemistry, environmental science, materials engineering, and nanotechnology, with multiple papers in leading journals such as ACS Sustainable Chemistry & Engineering, Nano Letters, Chemical Engineering Journal, Scientific Reports, Small, and Dalton Transactions. Collectively, his work addresses critical global challenges in clean energy generation, air and water purification, and sustainable catalysis, positioning him as a leading researcher in advanced functional nanomaterials and light‐assisted chemical technologies.