Bimetallic ZIF-Derived Co/N-Codoped Porous Carbon Supported Ruthenium Catalysts for Highly Efficient Hydrogen Evolution Reaction

Qi, Hui; Guan, Xinglong; Lei, Guangyu; Zhao, Mengyao; He, Hongwei; Li, Kai; Zhang, Guoliang; Zhang, Fengbao; Fan, Xiaobin; Peng, Wenchao; Li, Yang

doi:10.3390/nano11051228

Cited by 7 publications

(7 citation statements)

References 42 publications

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“…In the OER, the Co oxide head in the bean sprout-like structure may play a more important role in enhancing activity, as based on the literature and the findings of the present study [ 15 , 18 , 20 , 28 ]. The overall OER is written as M + 4OH − → M + O 2 (g) + 2H 2 O + 4e − [ 28 ].…”

Section: Resultssupporting

confidence: 60%

“…Metal–organic frameworks (MOFs) including other materials have been extensively employed in diverse application areas such as environments, adsorbents, organic light emitting displays, sensors and catalysts [ 1 , 2 , 3 , 4 , 5 , 6 , 7 , 8 , 9 , 10 ]. Among diverse MOFs, the zeolitic imidazolate framework (ZIF) exhibits zeolite-like topologies where imidazolate linkers are connected with tetrahedrally coordinated transition metal ions such as Co and Zn [ 1 , 2 , 3 , 4 , 5 , 6 , 7 , 8 , 9 , 10 , 11 , 12 , 13 , 14 , 15 , 16 , 17 , 18 , 19 , 20 , 21 , 22 , 23 , 24 , 25 , 26 , 27 ]. In this ZIF-class, ZIF-67 has Co-N tetrahedral coordination commonly synthesized with Co(II) precursor and 2-methylimidazole [ 5 , 6 , 7 , 8 , 9 , 10 ].…”

Section: Introductionmentioning

confidence: 99%

“…In this ZIF-class, ZIF-67 has Co-N tetrahedral coordination commonly synthesized with Co(II) precursor and 2-methylimidazole [ 5 , 6 , 7 , 8 , 9 , 10 ]. Many catalyst materials have been synthesized using ZIF-67 and examined in diverse areas of hydrogen evolution reaction (HER), oxygen evolution reaction (OER), oxygen reduction reaction (ORR), CO 2 hydrogenation reaction, energy storage and toluene oxidation [ 11 , 12 , 13 , 14 , 15 , 16 , 17 , 18 , 19 , 20 ]. For a synthetic strategy of Co 3 O 4 @TiO 2 composite, thermal decomposition of ZIF-67 followed by the liquid-phase deposition method was introduced [ 11 ].…”

Section: Introductionmentioning

confidence: 99%

“…Another work introduced bimetallic ZIF-8 and ZIF-67 to synthesize Ru-decorated Co/N-codoped porous carbon catalysts, and the HER performance showed an overpotential of 30 mV at 10 mA cm −2 and a Tafel slope of 32.1 mV/dec. The stability was claimed to be superior than a commercial 20 wt% Pt/C [ 20 ]. A MOF-derivatized Z-scheme catalyst of Fe 2 O 3 @Ag–ZnO@C was also introduced to photodegrade tetracyclin and methylene blue in wastewater [ 21 ].…”

Section: Introductionmentioning

confidence: 99%

“…As discussed in the literature, many strategies have been employed and the consequent materials have been tested in various application areas [ 1 , 2 , 3 , 4 , 5 , 6 , 7 , 8 , 9 , 10 , 11 , 12 , 13 , 14 , 15 , 16 , 17 , 18 , 19 , 20 , 21 , 22 , 23 , 24 , 25 , 26 , 27 ]. Motivated by this, we seek to further widen the synthesis of ZIP-derivatized catalyst materials and examine new physicochemical properties of a newly synthesized material.…”

Section: Introductionmentioning

confidence: 99%

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Photocatalytic and Electrocatalytic Properties of Cu-Loaded ZIF-67-Derivatized Bean Sprout-Like Co-TiO2/Ti Nanostructures

et al. 2021

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ZIF-derivatized catalysts have shown high potential in catalysis. Herein, bean sprout-like Co-TiO2/Ti nanostructures were first synthesized by thermal treatment at 800 °C under Ar-flow conditions using sacrificial ZIF-67 templated on Ti sheets. It was observed that ZIF-67 on Ti sheets started to thermally decompose at around 350 °C and was converted to the cubic phase Co3O4. The head of the bean sprout structure was observed to be Co3O4, while the stem showed a crystal structure of rutile TiO2 grown from the metallic Ti support. Cu sputter-deposited Co-TiO2/Ti nanostructures were also prepared for photocatalytic and electrocatalytic CO2 reduction performances, as well as electrochemical oxygen reaction (OER). Gas chromatography results after photocatalytic CO2 reduction showed that CH3OH, CO and CH4 were produced as major products with the highest MeOH selectivity of 64% and minor C2 compounds of C2H2, C2H4 and C2H6. For electrocatalytic CO2 reduction, CO, CH4 and C2H4 were meaningfully detected, but H2 was dominantly produced. The amounts were observed to be dependent on the Cu deposition amount. Electrochemical OER performances in 0.1 M KOH electrolyte exhibited onset overpotentials of 330–430 mV (vs. RHE) and Tafel slopes of 117–134 mV/dec that were dependent on Cu-loading thickness. The present unique results provide useful information for synthesis of bean sprout-like Co-TiO2/Ti hybrid nanostructures and their applications to CO2 reduction and electrochemical water splitting in energy and environmental fields.

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