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- W4200394386 abstract "Whereas limited amount of precious metal adsorbed by bacteria conflicting the needs of high loadings for better catalytic performances, cell disruption technology was adopted to smash Shewanella cells in this work, releasing abundant oxygen functional groups inside the cells for better adsorption of palladium ion. Then palladium catalysts were synthesized in two ways: 1) Pd catalyst supported on carbonized-broken-bacterial (Pd/FHNC) was obtained after direct carbonization and reduction; 2) Electrospinning technology was used to spin the broken Shewanella into fibers, and Pd nanoparticles supported on nitrogen-doped carbon nanofiber (Pd/NCNF) was prepared following carbonization and hydrogen reduction. The as-prepared catalysts exhibit excellent oxygen reduction reaction (ORR) electrocatalytic performance in the acid medium. The mass specific activities at 0.7 V of Pd/FHNC and Pd/NCNF were 0.213 A mg-1 and 0.121 A mg-1 which were 5.92 and 3.36 times than those of commercial Pd/C(0.036 A mg-1) respectively, and they also displayed higher stability than Pd/C. Furthermore, the Pd loadings of Pd/FHNC and Pd/NCNF were 21.52% and 17.13% respectively. An explanation for the improved performance is the co-doping of nitrogen and phosphorus, also the tight integration of Pd and broken-bacterial. Herein, we propose a novel and effective method for synthesis of ORR electrocatalysts." @default.
- W4200394386 created "2021-12-31" @default.
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- W4200394386 date "2022-04-01" @default.
- W4200394386 modified "2023-10-18" @default.
- W4200394386 title "Microbial synthesis of efficient palladium electrocatalyst with high loadings for oxygen reduction reaction in acidic medium" @default.
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- W4200394386 doi "https://doi.org/10.1016/j.jcis.2021.12.080" @default.
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