TY - JOUR
T1 - Metal-Organic frameworks-derived multifunctional carbon encapsulated metallic nanocatalysts for catalytic peroxymonosulfate activation and electrochemical hydrogen generation
AU - Ahsan, Md Ariful
AU - Santiago, Alain R.Puente
AU - Nair, Aruna Narayanan
AU - Weller, J. Mark
AU - Sanad, Mohammed F.
AU - Valles-Rosales, Delia J.
AU - Chan, Candace K.
AU - Sreenivasan, Sreeprasad
AU - Noveron, Juan C.
N1 - Funding Information:
This project was supported by the US National Science Foundation (NSF) Nanotechnology-Enabled Water Treatment Center ( NEWT ERC435 1449500 ) (to J.C.N.), the USDA 2019-38422-30214 (to J.C.N.). SS acknowledges the support through UTEP start-up , UT STARs , URI funding, and NSF-PREM grant #DMR-1827745.
Publisher Copyright:
© 2020 Elsevier B.V.
PY - 2020/12
Y1 - 2020/12
N2 - Synthesis of high-efficiency metal catalysts and their application in catalyzing critical chemical processes holds the key to the sustainable supply of water and energy. However, reaction-induced atomistic modifications of nanoclusters often result in reduced stability and efficacy. Herein, we report a highly active and multifunctional transition metal nanocatalysts encapsulated in porous carbon network (M@C where M = Cu, Ni, Fe, Co) prepared by leveraging the sacrificial templating properties of metal-organic frameworks (MOFs). The as-synthesized M@C nanocatalysts were employed for oxidative degradation of organic pollutants and electrocatalytic hydrogen generation. Fenton like catalytic studies revealed that the nanocatalysts were highly active and reusable following the order of Co@C > Fe@C > Cu@C > Ni@C. On the other hand, Ni@C electrocatalyst displayed superior activity towards hydrogen evolution reaction as compared to others, delivering a low onset potential of 61 mV, Tafel slope of 82 mV/dec and an overpotential of 286 mV at 10 mA‧cm−2. The activity was essentially unchanged even after 500 cycles, suggesting the long-term stability under acidic conditions. The impressive multifunctional catalytic performances of M@C nanocatalysts are attributed to their unique porous carbon matrix doped by transition metal nanoparticles which provide a large number of interconnected catalytically active sites.
AB - Synthesis of high-efficiency metal catalysts and their application in catalyzing critical chemical processes holds the key to the sustainable supply of water and energy. However, reaction-induced atomistic modifications of nanoclusters often result in reduced stability and efficacy. Herein, we report a highly active and multifunctional transition metal nanocatalysts encapsulated in porous carbon network (M@C where M = Cu, Ni, Fe, Co) prepared by leveraging the sacrificial templating properties of metal-organic frameworks (MOFs). The as-synthesized M@C nanocatalysts were employed for oxidative degradation of organic pollutants and electrocatalytic hydrogen generation. Fenton like catalytic studies revealed that the nanocatalysts were highly active and reusable following the order of Co@C > Fe@C > Cu@C > Ni@C. On the other hand, Ni@C electrocatalyst displayed superior activity towards hydrogen evolution reaction as compared to others, delivering a low onset potential of 61 mV, Tafel slope of 82 mV/dec and an overpotential of 286 mV at 10 mA‧cm−2. The activity was essentially unchanged even after 500 cycles, suggesting the long-term stability under acidic conditions. The impressive multifunctional catalytic performances of M@C nanocatalysts are attributed to their unique porous carbon matrix doped by transition metal nanoparticles which provide a large number of interconnected catalytically active sites.
KW - Advanced oxidation process
KW - Hydrogen evolution reaction
KW - Metal organic framework
KW - Porous carbon
KW - Transition metal nanocatalysts
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U2 - 10.1016/j.mcat.2020.111241
DO - 10.1016/j.mcat.2020.111241
M3 - Article
AN - SCOPUS:85092610924
VL - 498
JO - Molecular Catalysis
JF - Molecular Catalysis
SN - 2468-8231
M1 - 111241
ER -