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Journal Article 7

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2023 3

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carbon dioxide 2

electroreduction 2

formic acid 2

Ag catalyst 1

Artificial intelligence 1

CO₂ electroreduction 1

Electrocoagulation 1

Electrodialysis 1

Electroreduction 1

Fe–N_x nanoparticles 1

Flow-through electrode 1

Heavy metals 1

Hexavalent chromium 1

Neural network 1

Nitrate removal 1

ammonium bicarbonate electrolyte 1

carbon dioxide electroreduction 1

co-electrodeposition 1

covalent triazine polymers 1

electrochemistry 1

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Electrodeposited porous Pb electrode with improved electrocatalytic performance for the electroreduction

Jing WANG, Hua WANG, Zhenzhen HAN, Jinyu HAN

Frontiers of Chemical Science and Engineering 2015, Volume 9, Issue 1, Pages 57-63 doi: 10.1007/s11705-014-1444-8

Abstract: Pb foam was fabricated electrochemically at a copper substrate and then used as the cathode for the electroreductionelectrode with good catalytic abilities represents a new 3D porous material with applications for the electroreduction

Keywords： electrodeposited porous Pb carbon dioxide electroreduction formic acid

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Electrochemical removal of nitrate in industrial wastewater

Dong Xu, Yang Li, Lifeng Yin, Yangyuan Ji, Junfeng Niu, Yanxin Yu

Frontiers of Environmental Science & Engineering 2018, Volume 12, Issue 1, doi: 10.1007/s11783-018-1033-z

Abstract: A number of recent studies have demonstrated that electrochemical technologies, including electroreduction

Keywords： Nitrate removal Electroreduction Electrocoagulation Electrodialysis

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Electrochemical CO reduction to C products over CuZn intermetallic catalysts synthesized by electrodeposition

Frontiers in Energy doi: 10.1007/s11708-023-0898-0

Abstract: Electrocatalytic CO₂ reduction (ECR) offers an attractive approach to realizing carbon neutrality and producing valuable chemicals and fuels using CO₂ as the feedstock. However, the lack of cost-effective electrocatalysts with better performances has seriously hindered its application. Herein, a one-step co-electrodeposition method was used to introduce Zn, a metal with weak *CO binding energy, into Cu to form Cu/Zn intermetallic catalysts (Cu/Zn IMCs). It was shown that, using an H-cell, the high Faradaic efficiency of C₂₊ hydrocarbons/alcohols (

F E C 2 +

) could be achieved in ECR by adjusting the surface metal components and the applied potential. In suitable conditions, FE_C2+ and current density could be as high as 75% and 40 mA/cm², respectively. Compared with the Cu catalyst, the Cu/Zn IMCs have a lower interfacial charge transfer resistance and a larger electrochemically active surface area (ECSA), which accelerate the reaction. Moreover, the *CO formed on Zn sites can move to Cu sites due to its weak binding with *CO, and thus enhance the C–C coupling on the Cu surface to form C₂₊ products.

Keywords： carbon dioxide electroreduction electrochemistry co-electrodeposition intermetallic catalysts value-added

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Boosting the direct conversion of NHHCO electrolyte to syngas on Ag/Zn zeolitic imidazolate framework derived nitrogen-carbon skeleton

Frontiers of Chemical Science and Engineering 2023, Volume 17, Issue 9, Pages 1196-1207 doi: 10.1007/s11705-022-2289-1

Abstract: The electrochemical reduction of NH₄HCO₃ to syngas can bypass the high energy consumption of high-purity CO₂ release and compression after the ammonia-based CO₂ capture process. This technology has broad prospects in industrial applications and carbon neutrality. A zeolitic imidazolate framework-8 precursor was introduced with different Ag contents via colloid chemical synthesis. This material was carbonized at 1000 °C to obtain AgZn zeolitic imidazolate framework derived nitrogen carbon catalysts, which were used for the first time for boosting the direct conversion of NH₄HCO₃ electrolyte to syngas. The AgZn zeolitic imidazolate framework derived nitrogen carbon catalyst with a Ag/Zn ratio of 0.5:1 achieved the highest CO Faradaic efficiency of 52.0% with a current density of 1.15 mA·cm^–2 at –0.5 V, a H₂/CO ratio of 1–2 (–0.5 to –0.7 V), and a stable catalytic activity of more than 6 h. Its activity is comparable to that of the CO₂-saturated NH₄HCO₃ electrolyte. The highly discrete Ag-N_x and Zn-N_x nodes may have combined catalytic effects in the catalysts synthesized by appropriate Ag doping and sufficient carbonization. These nodes could increase active sites of catalysts, which is conducive to the transport and adsorption of reactant CO₂ and the stability of *COOH intermediate, thus can improve the selectivity and catalytic activity of CO.

Keywords： Ag catalyst zeolitic imidazolate framework CO₂ electroreduction ammonium bicarbonate electrolyte

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Electroreduction of hexavalent chromium using a porous titanium flow-through electrode and intelligent

Frontiers of Environmental Science & Engineering 2023, Volume 17, Issue 8, doi: 10.1007/s11783-023-1697-x

Abstract:

● Titanium-based flow-through electrode achieved high Cr(VI) reduction efficiency.

Keywords： Flow-through electrode Hexavalent chromium Heavy metals Neural network Artificial intelligence

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Preparation of a Pb loaded gas diffusion electrode and its application to CO

Ang LI, Hua WANG, Jinyu HAN, Li LIU

Frontiers of Chemical Science and Engineering 2012, Volume 6, Issue 4, Pages 381-388 doi: 10.1007/s11705-012-1216-2

Abstract: A Pb loaded gas diffusion electrode was fabricated and used for the electroreduction of CO to formicThe optimized gas diffusion electrode showed good catalytic performance for the electroreduction of CO

Keywords： electroreduction carbon dioxide lead catalyst gas diffusion electrode formic acid

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nanoparticle-embedded porous carbon superstructures from a Fe-covalent triazine polymer boosting oxygen electroreduction

Frontiers of Chemical Science and Engineering 2023, Volume 17, Issue 5, Pages 525-535 doi: 10.1007/s11705-022-2232-5

Abstract: Fe–N_x nanoparticles-embedded porous carbons with a desirable superstructure have attracted immense attention as promising catalysts for electrochemical oxygen reduction reaction. Herein, we employed Fe-coordinated covalent triazine polymer for the fabrication of Fe–N_x nanoparticle-embedded porous carbon nanoflorets (Fe/N@CNFs) employing a hypersaline-confinement-conversion strategy. Presence of tailored N types within the covalent triazine polymer interwork in high proportions contributes to the generation of Fe/N coordination and subsequent Fe–N_x nanoparticles. Owing to the utilization of NaCl crystals, the resultant Fe/N@CNF-800 which was generated by pyrolysis at 800 °C showed nanoflower structure and large specific surface area, which remarkably suppressed the agglomeration of high catalytic active sites. As expect, the Fe/N@CNF-800 exhibited unexpected oxygen reduction reaction catalytic performance with an ultrahigh half-wave potential (0.89 V vs. reversible hydrogen electrode), a dominant 4e^– transfer approach and great cycle stability (> 92% after 100000 s). As a demonstration, the Fe/N-PCNF-800-assembled zinc–air battery delivered a high open circuit voltage of 1.51 V, a maximum peak power density of 164 mW·cm^–2, as well as eminent rate performance, surpassing those of commercial Pt/C. This contribution offers a valuable avenue to exploit efficient metal nanoparticles-based carbon catalysts towards energy-related electrocatalytic reactions and beyond.

Keywords： Fe–N_x nanoparticles hypersaline-confinement conversion floret-like carbon covalent triazine polymers oxygen reduction reaction