The excessive use of diesel fuel to generate significant amounts of energy results in increased gaseous emissions, which result in accelerated global warming, unfavorable climatic changes with attendant depletion in the global oil reserve. Owing to strict emission-policies, vehicle manufacturers are mandated to control emissions from diesel engines. To comply with such policies, one of the novel steps adopted in this study, is the use of hydrogen enriched biodiesel admixed with nanoparticles. Hydrogen is an excellent energy carrier for use in diesel engines operating in dual fuel mode. Previous works have also shown that the use of biodiesel-H2 mix as fuel in diesel engines increases NOx emissions. This research entails the use of ferrocene nanoparticle blended with hibiscus cannabinus as an alternative fuel while monitoring the resultant effects of varying hydrogen flow rates on the emission, combustion and performance of a direct injection (DI) engine. The nanoparticles were characterized, ultrasonicated and stabilized in the biodiesel. The blended nanofuel was admixed with a fixed volume of hydrogen at flowrates of 10 and 12 lpm in the intake air and further injected in the diesel engine. From the results, the biodiesel-snanoparticle biofuel (BN@50 ppm) blend gave low CO, NOx, and HC emissions with an appreciable increase in the brake thermal efficiency (BTE). Furthermore, with hydrogen enrichment on BN@50 ppm at 10 LPM, (i.e., BNH@10 LPM), there was a marginal increase in the BTE (36 %) and a decrease in the CO (0.6 g/kWh), NOx (163 g/kWh) and HC (18 g/kWh), emissions with improved combustion compared those of the diesel and biodiesel which confirm the suitability of BNH@10 LPM as alternative fuel for diesel. Thus, the use of BNH@10 LPM) fuel type can be used as the most efficient fuel in an unmodified diesel engine due to its high thermal efficiency and lowest emissions compared to other tested fuels.