Ruthenium

Ruthenium (Ru) — 10-Year Trends

As of 2026-09-11 · the last 10 years

Research intensity has declined steadily over the last decade, falling from about 92% to about 74% of the element's all-time peak, which occurred in 2005.

Research intensity ran from about 92% of the element's own all-time peak in 2016 to about 74% in 2026 — a steady decline, and the all-time peak (2005) lies before this window. Over the same span its share of research attention across all elements held steady. Among the 118 elements, ruthenium has a larger-than-average research literature.

The number of papers involving the element rose from about 6,368 in 2016 to about 12,002 in 2025 (1.88x). That is slower than the literature as a whole grew over the same years, so the element lost ground in the wider body of research even as its own count rose.

The largest share of ruthenium research belongs to the community of Ruthenium Polypyridyl and Arene Complexes for Anticancer Therapy. This work focuses on designing ruthenium polypyridyl and arene complexes to evaluate their anticancer activity and nitric oxide release, with distinctive emphasis on ruthenium nitrosyl species. Ruthenium is one strand of a broader community, accounting for about 23% of its papers. This community holds about 25% of the element's recent research, a steady share compared to the previous period. A key paper in this area is "Ruthenium-Based Photoactivated Chemotherapy" (2023), cited over 220 times, which explores light-activated therapeutic mechanisms.

A rapidly growing area is Ruthenium Oxide Electrocatalysts for Acidic Hydrogen Oxidation. Here, ruthenium oxide and nanoparticle catalysts are developed specifically for the hydrogen oxidation reaction in acidic media, distinct from the broader focus on oxygen evolution. Ruthenium is a minor presence in this much larger community, appearing in about 4% of its papers. However, its share of ruthenium-specific research has risen significantly, from about 8% to about 17% over the window. This growth is anchored by high-impact work such as "Tantalum-stabilized ruthenium oxide electrocatalysts for industrial water electrolysis" (2025), cited over 470 times, and "A comprehensive review on the electrochemical parameters and recent material development of electrochemical water splitting electrocatalysts" (2023), cited over 820 times.

The third major community is Ruthenium Pincer Catalysts for Asymmetric Ketone Hydrogenation. These papers utilize ruthenium pincer complexes and nanoparticles to drive the asymmetric reduction of ketones to secondary alcohols and acceptorless dehydrogenative coupling. Ruthenium is one strand of this broader catalytic community, involved in about 19% of its papers. This community accounts for about 9% of the element's recent research, remaining steady despite a slight dip from its earlier share. Notable work includes "Highly selective and robust single-atom catalyst Ru1/NC for reductive amination of aldehydes/ketones" (2021), cited over 340 times.

Overall, the literature is consolidating around electrocatalysis, which is gaining share, while the anticancer and asymmetric catalysis communities maintain stable, significant portions of the research base. The remainder of the research, comprising about 49% of the element's work, is distributed across other smaller communities that have also held steady.

For a deeper look at the current state of ruthenium research, see the element's Last 12 Months and Executive Brief reports.