Nitrogen doped MoS2 and nitrogen doped carbon dots composite catalyst for electroreduction CO2 to CO with high Faradaic efficiency

Lv, Kuilin; Suo, Weiqun; Shao, Mingda; Wang, Xingpu; Feng, Jing; Fang, Mingwei; Zhu, Ying

doi:10.1016/j.nanoen.2019.06.030

Cited by 129 publications

(87 citation statements)

References 34 publications

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“…The reduction of CO 2 to CO is a two‐electron transfer process, and related intermediate products are *COOH and *CO. Many studies have shown that the desorption of *CO may be the rate‐determining steps for electrocatalytic reduction of CO 2 [41–43] . From Figure 5a, it can be seen that the desorption of *CO over Fe‐N 4 sites requires a lower ΔG than Fe‐N 3 and Fe‐N 2 coordination, which is consistent with the electrochemical performance results, confirming that Fe‐N 4 has a higher electrocatalytic activity of CO 2 RR.…”

Section: Resultssupporting

confidence: 82%

“…Many studies have shown that the desorption of *CO may be the rate-determining steps for electrocatalytic reduction of CO 2 . [41][42][43] From Figure 5a, it can be seen that the desorption of *CO over Fe-N 4 sites requires a lower ΔG than Fe-N 3 and Fe-N 2 coordination, which is consistent with the electrochemical performance results, confirming that Fe-N 4 has a higher electrocatalytic activity of CO 2 RR. Apart from that, we also calculated the Gibbs free energy of the competitive reaction-HER over these models.…”

Section: Resultssupporting

confidence: 78%

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The Effect of the Coordination Environment of Atomically Dispersed Fe and N Co‐doped Carbon Nanosheets on CO₂ Electroreduction

et al. 2020

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Single-atom metal and nitrogen co-doped carbon catalysts have caused an extensive research boom for electrochemical CO 2 reduction reaction (CO 2 RR). The diversity of metal-N coordination environment at high temperature limits the accurate study of electrocatalytic active sites. In this work, Fe porphyrin is anchored on a nitrogen-doped graphene substrate through the coordination between Fe and N atoms to form atomically dispersed Fe and N co-doped graphene nanosheets. The confinement anchoring effect of the nitrogen-doped graphene substrate prevents Fe atoms from agglomerating into Fe nanoparticles. Apart from that, the different Fe-N coordination environments and their catalytic effects on CO 2 RR are investigated by temperature changes. Electrochemical tests and density functional theory (DFT) calculations indicate that the atomically dispersed saturated Fe-N coordination catalyst have excellent performance for CO2RR and the Faradaic efficiency towards CO can up to 97 % at a potential of À 0.5 V (vs. reversible hydrogen electrode, RHE).

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Section: Resultssupporting

confidence: 82%

Section: Resultssupporting

confidence: 78%

The Effect of the Coordination Environment of Atomically Dispersed Fe and N Co‐doped Carbon Nanosheets on CO₂ Electroreduction

et al. 2020

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“… 4 , 7 , 8 Specifically, dual-doped CDs always show a higher ORR catalytic activity than non-doped or single-doped CDs due to higher heteroatom loading, synergistic electron-coupling interactions, and more active sites. 106 , 107 However, usually, CDs are combined with other carbon materials (e.g., graphene, reduced GO), 108 some metals (e.g., Ag, Au, Ni, Pd, Fe, Ru), 93 , 109 − 111 or metal-based semiconductors (e.g., Bi 2 O 3 , Co 3 O 4 , MoS 2 ) 104 , 112 , 113 to improve durability and synergistically enhance catalytic activity. For instance, GQDs greatly boosted both OER and HER performance of NiCo 2 P 2 by controlling catalyst morphology, enhancing charge transfer, and improving the catalytic kinetics.…”

Section: Energy Applicationsmentioning

confidence: 99%

“…Remarkably, some CDs can electrocatalyze CO 2 reduction into alternative liquid fuels (e.g., CO, CH 4 ) or value-added organic chemicals, which has attracted extensive research interest. 104 , 112 , 113 …”

Section: Energy Applicationsmentioning

confidence: 99%

Carbon Dots: A New Type of Carbon-Based Nanomaterial with Wide Applications

2020

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Carbon dots (CDs), as a new type of carbon-based nanomaterial, have attracted broad research interest for years, because of their diverse physicochemical properties and favorable attributes like good biocompatibility, unique optical properties, low cost, ecofriendliness, abundant functional groups (e.g., amino, hydroxyl, carboxyl), high stability, and electron mobility. In this Outlook, we comprehensively summarize the classification of CDs based on the analysis of their formation mechanism, micro-/nanostructure and property features, and describe their synthetic methods and optical properties including strong absorption, photoluminescence, and phosphorescence. Furthermore, the recent significant advances in diverse applications, including optical (sensor, anticounterfeiting), energy (light-emitting diodes, catalysis, photovoltaics, supercapacitors), and promising biomedicine, are systematically highlighted. Finally, we envisage the key issues to be challenged, future research directions, and perspectives to show a full picture of CDs-based materials.

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“…into electrical energy by utilizing the microorganism and enzyme as the catalyst for the oxidation of biofuels and reduction of oxidizers. [101] Thus it is mainly divided into two categories: enzymatic biofuel cells (EBFCs) and microbial biofuel cells (MBFCs). Compared with the traditional fuel cells, biofuel cells has the advantages of eco-environment, good biocompatibility, wide raw material sources and mild operating conditions.…”

Section: Biofuel Cellsmentioning

confidence: 99%

Electrochemistry in Carbon‐based Quantum Dots

Ding

Niu

Zhang

et al. 2020

Chemistry An Asian Journal

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Electrochemistry belongs to an important branch of chemistry that deals with the chemical changes produced by electricity and the production of electricity by chemical changes. Therefore, it can not only act a powerful tool for materials synthesis, but also offer an effective platform for sensing and catalysis. As extraordinary zero-dimensional materials, carbon-based quantum dots (CQDs) have been attracting tremendous attention due to their excellent properties such as good chemical stability, environmental friendliness, nontoxicity and abundant resources. Compared with the traditional methods for the preparation of CQDs, electrochemical (EC) methods offer advantages of simple instrumentation, mild reaction conditions, low cost and mass production. In return, CQDs could provide cost-effective, environmentally friendly, biocompatible, stable and easilyfunctionalizable probes, modifiers and catalysts for EC sensing. However, no specific review has been presented to systematically summarize both aspects until now. In this review, the EC preparation methods of CQDs are critically discussed focusing on CQDs. We further emphasize the applications of CQDs in EC sensors, electrocatalysis, biofuel cells and EC flexible devices. This review will further the experimental and theoretical understanding of the challenges and future prospective in this field, open new directions on exploring new advanced CQDs in EC to meet the high demands in diverse applications.[a] Dr.

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Nitrogen doped MoS2 and nitrogen doped carbon dots composite catalyst for electroreduction CO2 to CO with high Faradaic efficiency

Cited by 129 publications

References 34 publications

The Effect of the Coordination Environment of Atomically Dispersed Fe and N Co‐doped Carbon Nanosheets on CO₂ Electroreduction

The Effect of the Coordination Environment of Atomically Dispersed Fe and N Co‐doped Carbon Nanosheets on CO₂ Electroreduction

Carbon Dots: A New Type of Carbon-Based Nanomaterial with Wide Applications

Electrochemistry in Carbon‐based Quantum Dots

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Nitrogen doped MoS2 and nitrogen doped carbon dots composite catalyst for electroreduction CO2 to CO with high Faradaic efficiency

Cited by 129 publications

References 34 publications

The Effect of the Coordination Environment of Atomically Dispersed Fe and N Co‐doped Carbon Nanosheets on CO2 Electroreduction

The Effect of the Coordination Environment of Atomically Dispersed Fe and N Co‐doped Carbon Nanosheets on CO2 Electroreduction

Carbon Dots: A New Type of Carbon-Based Nanomaterial with Wide Applications

Electrochemistry in Carbon‐based Quantum Dots

Contact Info

Product

Resources

About

The Effect of the Coordination Environment of Atomically Dispersed Fe and N Co‐doped Carbon Nanosheets on CO₂ Electroreduction

The Effect of the Coordination Environment of Atomically Dispersed Fe and N Co‐doped Carbon Nanosheets on CO₂ Electroreduction