Nanoparticles-suspended biodiesel and its blends in compression ignition engines: a bibliometric analysis of research trend and future outlook

Abstract

The bibliometric analysis of nanoparticle-suspended biodiesel engine performance research (NSBEPR) has been presented. Publication data on NSBEPR extracted from the Scopus® database from 2009 to 2021 were analyzed using VOS viewer®. The network of co-authorship of participating countries and organizations, citation counts of scientific papers and journals, and co-occurrence of author keyword were analyzed to study the research trend, hotspot, temporal distribution, and future direction. With a sum of 260 scientific publications used in this study, the network analysis revealed India (208 articles and 4514 citations) and the University of Malaya (12 articles and 700 citations) were the most productive country and institution, respectively, concerning NSBEPR. The most cited paper and journal were the work of Shaafi and Velraj (2015) and “Fuel” with 208 and 1256 citations, respectively. The utilization of metal oxides (Al₂O₃ and CeO₂) as nanoparticles, waste (cooking oil) and edible (soybean) oils as biodiesel feedstocks, biodiesel blend with diesel (at 20%) as fuel, and the investigation of the same in direct ignition diesel engines were observed as the research hotspots. Future research focused on the deployment of magnetic conditioning, green and novel nanoparticles, hybrid and novel biodiesel, hydrogen, spent tire, and plastic oils as fuel additives.

Keywords:

• Bibliometric analysis
• biodiesel
• emission
• engine performance
• nanoparticles
• nano-biodiesel

Acknowledgments

The support of Mrs. O.L. Giwa is highly valued.

Author contribution

Giwa, S. O. – conceived the idea, analyzed the extracted data, and wrote the final draft of the manuscript. Aasa, S.A. and Shote, – extracted sourced the data, wrote the first draft of the manuscript and proofread the final manuscript. Sharifpur, M. – edited the final manuscript.

Disclosure statement

No potential conflict of interest was reported by the author(s).