Besides extensive work in the fields of thermodynamics, separation methods, coordination chemistry in solution, selective solvation of ions and physico-chemical aspects of ion exchange and solvent extraction, Professor Marcus authored or edited eight books, published more than 300 scientific papers, supported the International Solvent Extraction Conferences since their beginning in 1966 and nourished scientific co-operations in this field all over the world.
Prof. Marcus started his scientific work in late 1952 at the Soreq Nuclear Research Center in Israel, studying the extraction of uranium from wet-process phosphoric acid, using ion exchange and solvent extraction methods. Uranium(VI) forms anionic complexes in such media. The formation of such complexes was the basis of his Ph.D. thesis. After post-doctoral studies in Stockholm, MIT and Oak Ridge, he returned to work at the Soreq Nuclear Research Center in 1958, advancing from researcher to Head of Radiochemistry and finally Director of Chemistry. In 1965 Prof. Marcus was nominated as a full professor of Inorganic and Analytical Chemistry at the Hebrew University of Jerusalem, where he has been active ever since, at present as Professor Emeritus.
He has been awarded a Senior Alexander-von-Humbold-Fellowship in 1971, R. Freund award for popular scientific writing in 1985, N.S. Kurnakov medal for physicochemical analysis of the Russian academy of Sciences in 1992, a Visiting Research Professorship at Leicester Unviersity in 1993 and the International Authors Grant of the Royal Society of Chemistry in 1998.
He has been member in several commissions of IUPAC (International Union of Pure and Applied Chemistry) for nearly 4 decades, has a seat in the advisory boards of several international journals.