Direct conversion of metal organic frameworks into ultrafine phosphide nanocomposites in multicomponent plasma for wide pH hydrogen evolution
Author(s)
Guo, Yanru
Zhang, Chunmei
Wu, Yong
Yu, Hongen
Zhang, Shaojun
Du, Aijun
Ostrikov, Kostya Ken
Zheng, Jie
Li, Xingguo
Griffith University Author(s)
Year published
2020
Metadata
Show full item recordAbstract
Benefiting from tailorable properties through electronic states, chemical composition and crystal structures, transition metal phosphides (TMPs) present a great impetus for electrocatalytic water splitting. However, most TMP nanostructures are prepared via rigorous synthetic methods and harmful precursors, restricting their applications. Meanwhile, the rational design of structural characteristics and surface modification of TMPs needs to be considered to improve their catalytic activity and durability in both alkaline and acidic media. Here we report a simultaneous MOF decomposition and phosphorization strategy in multicomponent ...
View more >Benefiting from tailorable properties through electronic states, chemical composition and crystal structures, transition metal phosphides (TMPs) present a great impetus for electrocatalytic water splitting. However, most TMP nanostructures are prepared via rigorous synthetic methods and harmful precursors, restricting their applications. Meanwhile, the rational design of structural characteristics and surface modification of TMPs needs to be considered to improve their catalytic activity and durability in both alkaline and acidic media. Here we report a simultaneous MOF decomposition and phosphorization strategy in multicomponent NH3 plasma to prepare nickel phosphide encapsulated in N-doped carbon layers (Ni12P5@NC). The combination of the high chemical reactivity and low thermal effect of plasma enables low-temperature phosphorization with red phosphorus as the P source. Carambola-like Ni12P5@NC exhibits low overpotential (50 mV in alkali and 82 mV in acid, 20 mA cm-2) and superior operational stability, showing promising application toward water electrolysis.
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View more >Benefiting from tailorable properties through electronic states, chemical composition and crystal structures, transition metal phosphides (TMPs) present a great impetus for electrocatalytic water splitting. However, most TMP nanostructures are prepared via rigorous synthetic methods and harmful precursors, restricting their applications. Meanwhile, the rational design of structural characteristics and surface modification of TMPs needs to be considered to improve their catalytic activity and durability in both alkaline and acidic media. Here we report a simultaneous MOF decomposition and phosphorization strategy in multicomponent NH3 plasma to prepare nickel phosphide encapsulated in N-doped carbon layers (Ni12P5@NC). The combination of the high chemical reactivity and low thermal effect of plasma enables low-temperature phosphorization with red phosphorus as the P source. Carambola-like Ni12P5@NC exhibits low overpotential (50 mV in alkali and 82 mV in acid, 20 mA cm-2) and superior operational stability, showing promising application toward water electrolysis.
View less >
Journal Title
Journal of Materials Chemistry A
Volume
8
Issue
20
Subject
Macromolecular and materials chemistry
Materials engineering
Other engineering
Science & Technology
Physical Sciences
Chemistry, Physical
Energy & Fuels