Overwhelming electrochemical oxygen reduction reaction of zinc-nitrogen-carbon from biomass resource chitosan via a facile carbon bath method

Hu, Libing; Ye, Feng; Wang, Fu; Yang, Shuangchun; Peng, Banghua; Chen, Long; Wang, Gang; Hou, Juan; Dai, Bin; Tian, Zhongxian

doi:10.1016/j.cclet.2019.06.041

Cited by 16 publications

(15 citation statements)

References 41 publications

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“…As shown in Figure 2a, commercial Pt/C exhibits high ORR activity with an onset potential of 0.96 V RHE , a half-wave potential of 0.82 V RHE , and a limited current density of 5.7 mA•cm −2 . The result is similar to that reported in previous studies [20]. The Co-ZIF-8 carbonized at 800 • C exhibits poor activity with a half-wave potential of 0.74 V RHE and a limited current density of 3.8 mA•cm −2 .…”

Section: Effect Of Pyrolysis Temperature and Heating Rate On The Catalyst During One-step Pyrolysissupporting

confidence: 91%

Effect of Pyrolysis Conditions on the Performance of Co–Doped MOF–Derived Carbon Catalysts for Oxygen Reduction Reaction

Cui

Sun

et al. 2021

Catalysts

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MOF–derived porous carbon is a type of promising catalyst to replace expensive Pt–based catalysts for oxygen reduction reaction (ORR). The catalytic activity for ORR depends closely on pyrolysis conditions. In this work, a Co–doped ZIF–8 material was chosen as a research object. The effect of pyrolysis conditions (temperature, heating rate, two–step heating) on the ORR performance of ZIF–derived carbon catalysts was systematically studied. The Co–ZIF–8 catalyst carbonized at 900 °C exhibits better ORR catalytic activity than that carbonized at 800 °C and 1000 °C. Moreover, a low heating rate can enhance catalytic activity. Two–step pyrolysis is proven to be an effective way to improve the performance of catalysts. Reducing the heating rate in the low–temperature stage is more beneficial to the ORR performance, compared to the heating rate in the high–temperature stage. The results show that the Co–ZIF–8 catalyst exhibits the best performance when the precursor was heated to 350 °C at 2 °C/min, and then heated to 900 °C at 5 °C/min. The optimum Co–ZIF–8 catalyst shows a half–wave potential of 0.82 V and a current density of 5.2 mA·cm−2 in 0.1 M KOH solution. It also exhibits high content of defects and good graphitization. TEM mapping shows that Co and N atoms are highly dispersed in the polyhedral carbon skeleton. However, two–step pyrolysis has no significant effect on the stability of the catalyst.

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Section: Effect Of Pyrolysis Temperature and Heating Rate On The Catalyst During One-step Pyrolysissupporting

confidence: 91%

Effect of Pyrolysis Conditions on the Performance of Co–Doped MOF–Derived Carbon Catalysts for Oxygen Reduction Reaction

Cui

Sun

et al. 2021

Catalysts

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“…Indeed, the combination of metals and biochars (M-BCH) revealed to be extremely promising for the intended purpose. Not only the agglomeration and low stability of the metal species was limited as the overall electric conductivity of the material increased [167], but several extra advantages were reported, such as creation of more active sites, increase of specific surface area and enhanced porosity [170], leading to faster mass and charge transfers [171]. The metal species may be added before or after the carbonization of biomass and the biochar is often subject to activations or functionalization processes, since the electrocatalytic activity of biochar-based materials is strongly related with its surface area, functionalization, and aromatization degree [172].…”

Section: Orr Oer Hermentioning

confidence: 99%

“…Recently, metal-doped biochars have attracted attention as electrocatalysts for ORR [137,143,170,[174][175][176]. Hu et al, prepared a biomass-derived carbon doped with Co and CoO through the carbonization and activation with KOH of vegetable sponge (800 • C, 1 h) followed by immersion of the resulting material in a Co(NO 3 ) 2 •6H 2 O solution [143].…”

Section: Oxygen Reduction Reaction (Orr)mentioning

confidence: 99%

“…Biomass-based carbon materials co-doped with nitrogen and metal atoms, namely Fe [137,173,175], Zn [170], or Co [174], have shown interesting results in electrocatalysis, as several studies reported that metal-nitrogen-carbon (M-N-C) moieties can act as an important active site for ORR [137,174,177,178] by generating charge delocalization, promoting an easier O 2 adsorption [170]. Indeed, Zhang et al, reported a biomass-modified carbon black doped with nitrogen and iron exhibiting excellent ORR activity in alkaline electrolyte [173].…”

Section: Oxygen Reduction Reaction (Orr)mentioning

confidence: 99%

“…A zinc and nitrogen doped carbon derived from chitosan (Zn-N-C) also revealed to have promising activity towards ORR electrocatalysis in alkaline medium [170]. The material was obtained via carbonization of chitosan and Zn(NO 3 ) 2…”

Section: Oxygen Reduction Reaction (Orr)mentioning

confidence: 99%

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Metal-Supported Biochar Catalysts for Sustainable Biorefinery, Electrocatalysis, and Energy Storage Applications: A Review

et al. 2022

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Biochar (BCH) is a carbon-based bio-material produced from thermochemical conversion of biomass. Several activation or functionalization methods are usually used to improve physicochemical and functional properties of BCHs. In the context of green and sustainable future development, activated and functionalized biochars with abundant surface functional groups and large surface area can act as effective catalysts or catalyst supports for chemical transformation of a range of bioproducts in biorefineries. Above the well-known BCH applications, their use as adsorbents to remove pollutants are the mostly discussed, although their potential as catalysts or catalyst supports for advanced (electro)catalytic processes has not been comprehensively explored. In this review, the production/activation/functionalization of metal-supported biochar (M-BCH) are scrutinized, giving special emphasis to the metal-functionalized biochar-based (electro)catalysts as promising catalysts for bioenergy and bioproducts production. Their performance in the fields of biorefinery processes, and energy storage and conversion as electrode materials for oxygen and hydrogen evolutions, oxygen reduction, and supercapacitors, are also reviewed and discussed.

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Zinc and Nitrogen-Doped Carbon In-Situ Wrapped ZnO Nanoparticles as a High-Activity Catalyst for Acetylene Acetoxylation

et al. 2019

Catal Lett

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Overwhelming electrochemical oxygen reduction reaction of zinc-nitrogen-carbon from biomass resource chitosan via a facile carbon bath method

Cited by 16 publications

References 41 publications

Effect of Pyrolysis Conditions on the Performance of Co–Doped MOF–Derived Carbon Catalysts for Oxygen Reduction Reaction

Effect of Pyrolysis Conditions on the Performance of Co–Doped MOF–Derived Carbon Catalysts for Oxygen Reduction Reaction

Metal-Supported Biochar Catalysts for Sustainable Biorefinery, Electrocatalysis, and Energy Storage Applications: A Review

Zinc and Nitrogen-Doped Carbon In-Situ Wrapped ZnO Nanoparticles as a High-Activity Catalyst for Acetylene Acetoxylation

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