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Sulfur-deficient CoNi2S4 nanoparticles-anchored porous carbon nanofibers as bifunctional electrocatalyst for overall water splitting

Frontiers of Chemical Science and Engineering 2023, Volume 17, Issue 11,   Pages 1707-1717 doi: 10.1007/s11705-023-2308-x

Abstract: Water electrolysis technology is considered to be one of the most promising means to produce hydrogen. Herein, aiming at the problems of high overpotential and slow kinetics in water splitting, N-doped porous carbon nanofibers-coupled CoNi2S4 nanoparticles are prepared as bifunctional electrocatalyst. In the strategy, NaCl is used as the template to prepare porous carbon nanofibers with a large surface area, and sulfur vacancies are created to modulate the electronic structure of CoNi2S4. Electron spin resonance confirms the formation of abundant sulfur vacancies, which largely reduce the bandgap of CoNi2S4 from 1.68 to 0.52 eV. The narrowed bandgap is conducive to the migration of valence electrons and decreases the charge transfer resistance for electrocatalytic reaction. Moreover, the uniform distribution of CoNi2S4 nanoparticles on carbon nanofibers can prevent the aggregation and facilitate the exposure of electrochemical active sites. Therefore, the composite catalyst exhibits low overpotentials of 340 mV@100 mA·cm–2 for oxygen evolution reaction and 380 mV@100 mA·cm–2 for hydrogen evolution reaction. The assembled electrolyzer requires 1.64 V to achieve 10 mA·cm–2 for overall water-splitting with good long-term stability. The excellent performance results from the synergistic effect of porous structures, sulfur deficiency, nitrogen doping, and the well-dispersed active component.

Keywords： nanoparticle     sulfur vacancy     porous carbon nanofiber     transition metal sulfides     electrolysis    

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Phosphorus-doped Ni–Co sulfides connected by carbon nanotubes for flexible hybrid supercapacitor

Frontiers of Chemical Science and Engineering 2023, Volume 17, Issue 5,   Pages 491-503 doi: 10.1007/s11705-022-2257-9

Abstract: As promising electrode materials for supercapacitors, nickel-cobalt bimetallic sulfides render the advantagesHerein, we rationally regulate phosphorus-doped nickel–cobalt sulfides (P-NCS) to enhance the electrochemical

Keywords： cobalt nickel sulfide     phosphorus-doping     hybrid supercapacitor     carbon nanotube     density functional theory    

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In-MOF-derived In2S3/Bi2S3 heterojunction for enhanced photocatalytic hydrogen production

Frontiers in Energy 2023, Volume 17, Issue 5,   Pages 654-663 doi: 10.1007/s11708-023-0885-5

Abstract: Transition metal sulfides are commonly studied as photocatalysts for water splitting in solar-to-fuelprovides a novel idea for rationally designing innovative heterojunction photocatalysts of transition metalsulfides for photocatalytic hydrogen production.

Keywords： photocatalytic hydrogen production     wide-spectrum response     metal sulfides     MOFs derivative     heterogeneous    

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A ternary mechanism for the facilitated transfer of metal ions onto metal–organic frameworks: implications

Frontiers of Chemical Science and Engineering   Pages 1632-1642 doi: 10.1007/s11705-022-2187-6

Abstract: Although metal–organic frameworks offer a new platform for developing versatile sorption materials, yetHerein, a ternary mechanism for U(VI) uptake in metal–organic frameworks was reported.energy-dispersive X-ray spectroscopy and zeta potential measurement reveal that U(VI) uptake in the three metal–organicThe present study suggests that changing metal center of metal–organic frameworks and sorption conditionsalters sorption mechanism, which helps to construct effective metal–organic frameworks-based sorbents

Keywords： U(VI)     metal–organic frameworks     adsorption mechanism     metal node    

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Sustainability of metal recovery from E-waste

Biswajit Debnath, Ranjana Chowdhury, Sadhan Kumar Ghosh

Frontiers of Environmental Science & Engineering 2018, Volume 12, Issue 6, doi: 10.1007/s11783-018-1044-9

Abstract:

Metal recovery techniques from electronic waste reported in literature

Metal recovery processes followed in Industries

Sustainability analysis of metal recovery processes

Keywords： E-waste     Metal recovery     Metal Recovery from E-waste (MREW)     Sustainability    

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Optimizing iodine capture performance by metal–organic framework containing with bipyridine units

Frontiers of Chemical Science and Engineering 2023, Volume 17, Issue 4,   Pages 395-403 doi: 10.1007/s11705-022-2218-3

Abstract: The adsorptive capture of radioactive iodine by metal–organic frameworks (MOFs) has risen to prominence

Keywords： metal–organic framework     iodine     adsorption     nuclear waste     environmental remediation    

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Selective capture and separation of xenon and krypton using metal organic frameworks: a review

Frontiers of Chemical Science and Engineering 2023, Volume 17, Issue 12,   Pages 1895-1912 doi: 10.1007/s11705-023-2355-3

Abstract: Metal organic frameworks as hotspot porous materials for gases uptake and separation are considered toIn this review, we comprehensively summarized recent researches on metal organic frameworks for selectiveaspects of different optimal design strategies, including optimal pore/cage size and geometry, open metal

Keywords： metal organic frameworks     xenon     krypton     selective separation     used nuclear fuel    

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Liquid metal thermal hydraulics R&D at European scale: achievements and prospects

Frontiers in Energy 2021, Volume 15, Issue 4,   Pages 842-853 doi: 10.1007/s11708-021-0743-2

Abstract: future nuclear carbon-free energy production is attributed to fast reactors, mostly employing a liquid metalcollaborative projects sponsored by the European Commission in the past 20 years in the fields of liquid-metal

Keywords： liquid metal     thermal hydraulics     Europe    

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Localized high-concentration electrolytes for lithium metal batteries: progress and prospect

Frontiers of Chemical Science and Engineering 2023, Volume 17, Issue 10,   Pages 1354-1371 doi: 10.1007/s11705-022-2286-4

Abstract: anode materials with an ultrahigh specific capacity and extremely low electrode potential, lithium metalCoulombic efficiency and potential safety risks severely hinder the practical applications of lithium metalprovide an overview of the recent developments of localized high-concentration electrolytes in lithium metalvoltage window of electrolytes, enhance safety, and render low-temperature operation for robust lithium metalhigh-concentration electrolytes are outlined, which can promisingly render the practical applications of lithium metal

Keywords： high-concentration electrolyte     localized high-concentration electrolyte     lithium metal battery     solid    

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Analysis of molten metal spreading and solidification behaviors utilizing moving particle full-implicit

Frontiers in Energy 2021, Volume 15, Issue 4,   Pages 959-973 doi: 10.1007/s11708-021-0753-0

Abstract: In particular, the molten metal spreading behavior is one of the vital phenomena in nuclear severe accidentsIn this study, the fundamental molten metal spreading experiments were performed with different outletThe simulation results reveal the detailed solidification procedure during the molten metal spreading

Keywords： molten metal spreading     solidification     particle method     severe accident     fuel debris     decommissioning    

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Visible light responsive photocatalysts developed by substitution with metal cations aiming at artificial

Frontiers in Energy 2021, Volume 15, Issue 3,   Pages 568-576 doi: 10.1007/s11708-021-0774-8

Abstract: mini-review introduces the recent work on visible-light-driven photocatalysts developed by substitution with metal

Keywords： visible light responsive photocatalyst     water splitting     artificial photosynthesis: metal ion substitution    

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Flow and thermal modeling of liquid metal in expanded microchannel heat sink

Frontiers in Energy   Pages 796-810 doi: 10.1007/s11708-023-0877-5

Abstract: Liquid metal-based microchannel heat sinks (MCHSs) suffer from the low heat capacity of coolant, resultingThe heat conduction of liquid metal in Z direction and the heat convection between the top surfaceof fins and the liquid metal could reduce the total thermal resistance (Rt).

Keywords： liquid metal cooling     heat sink     expanded microchannel     flow and thermal modeling    

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Surface tension of liquid metal: role, mechanism and application

Xi ZHAO, Shuo XU, Jing LIU

Frontiers in Energy 2017, Volume 11, Issue 4,   Pages 535-567 doi: 10.1007/s11708-017-0463-9

Abstract: Recently, the room temperature liquid metal (RTLM) mainly composed of gallium-based alloys has causedpaper is dedicated to present an overview on the roles and mechanisms of surface tension of liquid metal

Keywords： surface tension     liquid metal     soft machine     printed electronics     electrowetting     self-actuation    

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Room temperature liquid metal: its melting point, dominating mechanism and applications

Junheng FU, Chenglin ZHANG, Tianying LIU, Jing LIU

Frontiers in Energy 2020, Volume 14, Issue 1,   Pages 81-104 doi: 10.1007/s11708-019-0653-8

Abstract: The room temperature liquid metal (LM) is recently emerging as a new class of versatile materials withlike components, pressure, size and supercooling that may be critical for melting processes of liquid metal

Keywords： melting point     liquid metal     crystal     thermodynamics     molecular dynamics    

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Structural engineering of transition metal-based nanostructured electrocatalysts for efficient water

Yueqing Wang, Jintao Zhang

Frontiers of Chemical Science and Engineering 2018, Volume 12, Issue 4,   Pages 838-854 doi: 10.1007/s11705-018-1746-3

Abstract: Tremendous efforts have been devoted to exploring highly efficient and abundant metal oxide electrocatalystsIn this review, we summarize the recent advances on the development of metal oxide electrocatalysts withThe special strategies relay on the transformation from the metal organic framework and ion exchangereactions for the preparation of novel metal oxide nanostructures with boosting the catalytic activities

Keywords： water splitting     structure engineering     metal organic framework     ion exchange     synergistic effect     hybrid    

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Title Author Date Type Operation

Sulfur-deficient CoNi2S4 nanoparticles-anchored porous carbon nanofibers as bifunctional electrocatalyst for overall water splitting

Journal Article

Phosphorus-doped Ni–Co sulfides connected by carbon nanotubes for flexible hybrid supercapacitor

Journal Article

In-MOF-derived In2S3/Bi2S3 heterojunction for enhanced photocatalytic hydrogen production

Journal Article

A ternary mechanism for the facilitated transfer of metal ions onto metal–organic frameworks: implications

Journal Article

Sustainability of metal recovery from E-waste

Biswajit Debnath, Ranjana Chowdhury, Sadhan Kumar Ghosh

Journal Article

Optimizing iodine capture performance by metal–organic framework containing with bipyridine units

Journal Article

Selective capture and separation of xenon and krypton using metal organic frameworks: a review

Journal Article

Liquid metal thermal hydraulics R&D at European scale: achievements and prospects

Journal Article

Localized high-concentration electrolytes for lithium metal batteries: progress and prospect

Journal Article

Analysis of molten metal spreading and solidification behaviors utilizing moving particle full-implicit

Journal Article

Visible light responsive photocatalysts developed by substitution with metal cations aiming at artificial

Journal Article

Flow and thermal modeling of liquid metal in expanded microchannel heat sink

Journal Article

Surface tension of liquid metal: role, mechanism and application

Xi ZHAO, Shuo XU, Jing LIU

Journal Article

Room temperature liquid metal: its melting point, dominating mechanism and applications

Junheng FU, Chenglin ZHANG, Tianying LIU, Jing LIU

Journal Article

Structural engineering of transition metal-based nanostructured electrocatalysts for efficient water

Yueqing Wang, Jintao Zhang

Journal Article