Heterostructured Bi–Cu<sub>2</sub>S nanocrystals for efficient CO<sub>2</sub> electroreduction to formate

Han, Xue; Mou, Tianyou; Liu, Shikai; Ji, Mengxia; Gao, Qiang; He, Qian; Xin, Hongliang; Zhu, Huiyuan

doi:10.1039/d1nh00661d

Cited by 25 publications

(16 citation statements)

References 37 publications

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“…The highest FE HCOO-was achieved to 82 % at -0.63 V (vs. RHE). Subsequently, Han et al [56] presented a heterostructure Bi-Cu 2 S nanocrystals via one-pot synthesis method. The epitaxial growth of Cu 2 S on Bi could provide abundant interfacial heterostructure and catalytic sites.…”

Section: Products Of Co and Hcooh/hcoo -Catalyzed By Sd-cumentioning

confidence: 99%

Electrochemical CO2 Reduction by Chalcogenide-Derived Cu Electrocatalysts: A Review

Ding

Liang

et al. 2023

Preprint

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Electrochemical carbon dioxide (CO2) reduction (ECR) has become more attractive to realize CO2 convert to high value products with renewable electricity. In this review, recent progress in the synthesis and electrochemical application of chalcogenide-derived Cu (including OD-Cu, SD-Cu and SeD-Cu) materials for CO2 electroreduction reaction have been summarized. The kind of ECR products is highly related with the CO2 adsorption pattern and reduction process on catalyst surface. In addition, the structure-activity relationship between crystal structure/morphology/composition of chalcogenide-derived Cu and their ECR activity/selectivity/products have also been discussed. Finally, some prospects on the challenge and future research trends in rational design of high efficient OD-Cu, SD-Cu and SeD-Cu electrodes are provided.

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Section: Products Of Co and Hcooh/hcoo -Catalyzed By Sd-cumentioning

confidence: 99%

Electrochemical CO2 Reduction by Chalcogenide-Derived Cu Electrocatalysts: A Review

Ding

Liang

et al. 2023

Preprint

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“…Thus, their CO 2 RR paths and performance should be correlated with sulfur precursors employed. Sulfur sources including thiourea (TU), thioacetamide (TAA), sodium thiosulfate (STS), and sodium sulfide (SS) with distinct chemical structures and hydrolysis rates have been most widely employed for synthesizing sulfur-containing composite materials. , The unique structures and the different S 2– release rates of the sulfur sources in hydrothermal synthesis will result in CuS catalysts with distinct morphologies, and their catalytic activity and selectivity in the CO 2 RR might be affected. , Previous contributions have also highlighted the use of different sulfur sources and synthesis methods for preparing CuS nanostructures for electrochemical CO 2 reduction. ,,,− On the condition that both the synthesis method and sulfur source play important roles in deciding the morphology and CO 2 RR performance of CuS catalysts, it is rather difficult to identify the sulfur precursor effect on the structure and activity of the catalysts. In other words, a comparative investigation on fabricating CuS nanostructures using different sulfur sources in the same system and unraveling their impacts on CO 2 RR performance are still limited.…”

Section: Introductionmentioning

confidence: 99%

Hydrothermal Synthesis of CuS Catalysts for Electrochemical CO₂ Reduction: Unraveling the Effect of the Sulfur Precursor

Gao

Guo

Zou

et al. 2023

ACS Appl. Energy Mater.

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Copper-based catalysts have been recognized as promising candidates for electrochemical conversion of CO2 to value-added chemicals and synthetic fuels. Yet, the challenges of high overpotential and low product selectivity have motivated the rational electrode engineering. In the present work, we prepared CuS catalysts using different sulfur precursors, and we aimed to elucidate the precursor-dependent effect on their structure–property–activity relationships for electrochemical CO2 reduction. The different sulfur precursors exhibited varied S release rates in hydrothermal synthesis, which had induced distinct surface morphological features and diverse sulfur vacancy concentrations, and the intrinsic catalytic activity and product selectivity would be affected. The desired CuS-TU catalyst synthesized using thiourea as the sulfur precursor featured a flower-like morphology and had the highest sulfur vacancy concentration. The nanoflower morphology offered expanded space and considerable undercoordinated sites for facilitated interfacial mass transfer in electrochemical CO2 reduction. Density functional theory calculations confirmed that the abundant sulfur vacancy played an important role in strengthening the adsorption of the *COOH intermediates on the surface, which promoted CO production via the *COOH pathway. The CuS-TU catalyst therefore exhibited a relatively higher CO selectivity of 72.67% at −0.51 V vs RHE. These findings will provide more insights into improving the electrochemical CO2 reduction performance of copper-based catalysts by structure engineering.

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“…To address the problems of Bi-based catalysts, various methods have been used to improve their CO 2 reduction performance, including morphology control, , alloying, construction of heterojunctions, introduction of defects, − amorphization, , element doping, − and so forth. Elemental doping has been shown to be an effective strategy for improving the physical and chemical properties of electrocatalysts, , thus enhancing the catalyst selectivity and activity of CO 2 RR.…”

Section: Introductionmentioning

confidence: 99%

Doping of Vanadium into Bismuth Oxide Nanoparticles for Electrocatalytic CO₂ Reduction

Zhang

Zheng

Cui

et al. 2022

ACS Appl. Nano Mater.

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Electrocatalytic reduction of carbon dioxide (CO2) to formate is an effective solution to address the continuous increase in CO2 in the atmosphere. Here, we report a vanadium-doped (V-doped) bismuth oxide (Bi2O3) electrocatalyst synthesized using a facile one-step hydrothermal method for highly efficient electrochemical reduction of CO2 to formate. The doping of V can tune the intrinsic crystal and electronic structure of Bi2O3, that is, causing partial amorphization in the Bi2O3 nanosheet and decreasing electron density around Bi active sites. The partial amorphous region can provide more reactive sites; meanwhile, the electron-deficient environment around Bi enhances the adsorption of CO2. The synergistic crystal and electronic structure modulation in the V-doped Bi2O3 provides excellent electrocatalytic CO2RR performance with a high formate selectivity of 94.2% and a high partial current density of 45.03 mA cm–2 at −1.1 V (vs RHE).

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Heterostructured Bi–Cu₂S nanocrystals for efficient CO₂ electroreduction to formate

Abstract: Electrochemical CO2 reduction reaction (ECO2RR) driven by renewable electricity holds promise to store intermittent energy in chemical bonds while producing value-added chemicals and fuels sustainably. Unfortunately, it remains a grand...

Cited by 25 publications

References 37 publications

Electrochemical CO2 Reduction by Chalcogenide-Derived Cu Electrocatalysts: A Review

Electrochemical CO2 Reduction by Chalcogenide-Derived Cu Electrocatalysts: A Review

Hydrothermal Synthesis of CuS Catalysts for Electrochemical CO₂ Reduction: Unraveling the Effect of the Sulfur Precursor

Doping of Vanadium into Bismuth Oxide Nanoparticles for Electrocatalytic CO₂ Reduction

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Heterostructured Bi–Cu2S nanocrystals for efficient CO2 electroreduction to formate

Abstract: Electrochemical CO2 reduction reaction (ECO2RR) driven by renewable electricity holds promise to store intermittent energy in chemical bonds while producing value-added chemicals and fuels sustainably. Unfortunately, it remains a grand...

Cited by 25 publications

References 37 publications

Electrochemical CO2 Reduction by Chalcogenide-Derived Cu Electrocatalysts: A Review

Electrochemical CO2 Reduction by Chalcogenide-Derived Cu Electrocatalysts: A Review

Hydrothermal Synthesis of CuS Catalysts for Electrochemical CO2 Reduction: Unraveling the Effect of the Sulfur Precursor

Doping of Vanadium into Bismuth Oxide Nanoparticles for Electrocatalytic CO2 Reduction

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Product

Resources

About

Heterostructured Bi–Cu₂S nanocrystals for efficient CO₂ electroreduction to formate

Hydrothermal Synthesis of CuS Catalysts for Electrochemical CO₂ Reduction: Unraveling the Effect of the Sulfur Precursor

Doping of Vanadium into Bismuth Oxide Nanoparticles for Electrocatalytic CO₂ Reduction