Abstract
In this work, the synthesis of high-performance, metal ion-imprinted, mesoporous carbon electrocatalysts for hydrazine oxidation reaction (HzOR) using casein or a family of phosphoproteins derived from cow's milk as a precursor is shown. The synthesis is made possible by mixing trace amounts of non-noble metal ions (Fe3+ or Co2+) with casein and then producing different metal ions-functionalized casein intermediates, which upon carbonization, followed by acid treatment, lead to metal ion-imprinted catalytically active sites on the materials. The materials effectively electrocatalyze HzOR with low overpotentials at neutral pH and exhibit among the highest electrocatalytic performances ever reported for carbon catalysts. Their catalytic activities are also better than the corresponding control material, synthesized by carbonization of pure casein and other materials previously reported for HzOR. This work demonstrates a novel synthetic route that transforms an inexpensive protein to highly active carbon-based electrocatalysts by modifying its surfaces with trace amounts of non-noble metals. The types of metal ions employed in the synthesis are found to dictate the electrocatalytic activities of the materials. Notably, Fe3+ is found to be more effective than Co2+ in helping the conversion of casein into more electrocatalytically active carbon materials for HzOR.
| Original language | English |
|---|---|
| Article number | 1808486 |
| Journal | Advanced Functional Materials |
| DOIs | |
| Publication status | Accepted/In press - Jan 1 2019 |
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Keywords
- carbon materials
- casein
- electrocatalysis
- hydrazine oxidation
- imprinted actives sites
ASJC Scopus subject areas
- Chemistry(all)
- Materials Science(all)
- Condensed Matter Physics
Cite this
Deriving Efficient Porous Heteroatom-Doped Carbon Electrocatalysts for Hydrazine Oxidation from Transition Metal Ions-Coordinated Casein. / Fragal, Vanessa H.; Fragal, Elizângela H.; Zhang, Tao; Huang, Xiaoxi; Cellet, Thelma Sley P.; Pereira, Guilherme M.; Jitianu, Andrei; Rubira, Adley F.; Silva, Rafael; Asefa, Teddy.
In: Advanced Functional Materials, 01.01.2019.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Deriving Efficient Porous Heteroatom-Doped Carbon Electrocatalysts for Hydrazine Oxidation from Transition Metal Ions-Coordinated Casein
AU - Fragal, Vanessa H.
AU - Fragal, Elizângela H.
AU - Zhang, Tao
AU - Huang, Xiaoxi
AU - Cellet, Thelma Sley P.
AU - Pereira, Guilherme M.
AU - Jitianu, Andrei
AU - Rubira, Adley F.
AU - Silva, Rafael
AU - Asefa, Teddy
PY - 2019/1/1
Y1 - 2019/1/1
N2 - In this work, the synthesis of high-performance, metal ion-imprinted, mesoporous carbon electrocatalysts for hydrazine oxidation reaction (HzOR) using casein or a family of phosphoproteins derived from cow's milk as a precursor is shown. The synthesis is made possible by mixing trace amounts of non-noble metal ions (Fe3+ or Co2+) with casein and then producing different metal ions-functionalized casein intermediates, which upon carbonization, followed by acid treatment, lead to metal ion-imprinted catalytically active sites on the materials. The materials effectively electrocatalyze HzOR with low overpotentials at neutral pH and exhibit among the highest electrocatalytic performances ever reported for carbon catalysts. Their catalytic activities are also better than the corresponding control material, synthesized by carbonization of pure casein and other materials previously reported for HzOR. This work demonstrates a novel synthetic route that transforms an inexpensive protein to highly active carbon-based electrocatalysts by modifying its surfaces with trace amounts of non-noble metals. The types of metal ions employed in the synthesis are found to dictate the electrocatalytic activities of the materials. Notably, Fe3+ is found to be more effective than Co2+ in helping the conversion of casein into more electrocatalytically active carbon materials for HzOR.
AB - In this work, the synthesis of high-performance, metal ion-imprinted, mesoporous carbon electrocatalysts for hydrazine oxidation reaction (HzOR) using casein or a family of phosphoproteins derived from cow's milk as a precursor is shown. The synthesis is made possible by mixing trace amounts of non-noble metal ions (Fe3+ or Co2+) with casein and then producing different metal ions-functionalized casein intermediates, which upon carbonization, followed by acid treatment, lead to metal ion-imprinted catalytically active sites on the materials. The materials effectively electrocatalyze HzOR with low overpotentials at neutral pH and exhibit among the highest electrocatalytic performances ever reported for carbon catalysts. Their catalytic activities are also better than the corresponding control material, synthesized by carbonization of pure casein and other materials previously reported for HzOR. This work demonstrates a novel synthetic route that transforms an inexpensive protein to highly active carbon-based electrocatalysts by modifying its surfaces with trace amounts of non-noble metals. The types of metal ions employed in the synthesis are found to dictate the electrocatalytic activities of the materials. Notably, Fe3+ is found to be more effective than Co2+ in helping the conversion of casein into more electrocatalytically active carbon materials for HzOR.
KW - carbon materials
KW - casein
KW - electrocatalysis
KW - hydrazine oxidation
KW - imprinted actives sites
UR - http://www.scopus.com/inward/record.url?scp=85059646298&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85059646298&partnerID=8YFLogxK
U2 - 10.1002/adfm.201808486
DO - 10.1002/adfm.201808486
M3 - Article
JO - Advanced Functional Materials
JF - Advanced Functional Materials
SN - 1616-301X
M1 - 1808486
ER -