Dr. Karim has published over 180 ISI journal papers, reviews in peer-reviewed journals, book chapters and books. He also possesses two US, one European, and three Saudi Arabian patents related to polymers and solar cells. He has been awarded the “King Saud University Awards for Scientific Excellence-2015” under the Innovation, Invention, and Licensing category. He has been listed as "the world's top 2% best scientist: 2019, 2020, 2021 and 2022” as a research faculty member among the world's scientists. His research interests are nanomaterials, nanocomposites and fibers, carbon nanotubes, conducting polymers, biopolymers, hybrid solar cells, water treatments, toxic metal detection and separation, supercapacitors, batteries, etc.