CO2 photoelectroreduction with enhanced ethanol selectivity by high valence rhenium-doped copper oxide composite catalysts

Lu, Yueheng; Xu, Shenghang; Feng, Wenyu; Hou, Guangya; Tang, Yiping; Zhang, Huibin

doi:10.1016/j.jcis.2021.04.087

Cited by 12 publications

(7 citation statements)

References 45 publications

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“…Kammert et al 12 evidenced the existence of the CH 3 CH 2 CH(OH)(ORe) diollike intermediate during the reduction of propionic acid, which was determined as the specific rate-determining step in the presence of ReO x . The research study by Lu et al 25 also reported the significant role of Re δ+ in the ReO x -Cu/TiO 2 for selective reduction of CO 2 to small molecular alcohols. The presence of ReO x with high valence was responsible for the alcoholization process and benefited the C−C coupling, which promoted the selective production of ethanol instead of formaldehyde.…”

Section: ■ Re Decorator In Bimetallic Systemmentioning

confidence: 90%

“…Possible penetration of Re into a different M lattice easily happens, where lattice expansion or contraction easily exists and the lattice becomes a very tight conformation under appropriate conditions. 25 In these cases, the sequential loading of metals in the bimettalic Re−M (e.g., M = Ru, Pt, Pd, Rh, etc.) would not greatly impact the catalytic behavior especially after thermal reduction.…”

Section: ■ Re Decorator In Bimetallic Systemmentioning

confidence: 99%

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Rhenium in Heterogeneous Catalysis: A Rising Star for Hydrogenation Reactions

Luo,

Liang

2024

ACS Catal.

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Rhenium has a special existence in precious metals. In current catalysis, nanoscale Re(O x ) is appreciated by researchers and used to design effective catalyst systems for a variety of hydrogenation reactions, which are widely applied in the fields of petroleum refining, industrial chemical production, and biomass conversion. Current reports focus on the shining characteristics of Re with changeable chemical valences and high oxophilicity. Re-based catalyst provides an essential electronic environment in bimetallic catalysts or behaves as the main reactive center with efficiency. Regardless, there are still limited research works on rhenium compared to other traditional metal catalysts. Herein, investigations concerning Re catalysis during the past decade are summarized. As a burgeoning star, the essential roles of Re sites as a decorator and even the main centers are interpreted in this Review. The advantages of Re in bimetallic and monometallic catalysts, the available-tuned surface and geometric structure, the factors influencing their catalytic behaviors, and the typical heterogeneous reaction models are expressed thoroughly. This Review may shed light on those researchers who are anxious to find more strategies to conquer a tough task and those who are just stepping into the world of rhenium catalysis.

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Section: ■ Re Decorator In Bimetallic Systemmentioning

confidence: 90%

Section: ■ Re Decorator In Bimetallic Systemmentioning

confidence: 99%

Rhenium in Heterogeneous Catalysis: A Rising Star for Hydrogenation Reactions

Luo,

Liang

2024

ACS Catal.

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“…These results indicate that the high valence Re doping promotes alcoholization and benefits C−C coupling, leading to selective conversion of CO 2 to ethanol. 114 Some studies have reported improved catalytic activity with the combination of carbon-based photocatalyst. Wang et al showed TiO 2 nanowires grown on a graphite surface that mimicked the natural plant's Calvin cycle, leading to C 2+ chemicals.…”

Section: Photoelectrochemical Co 2 Reduction To Alcoholsmentioning

confidence: 99%

“…In contrast, the products of the undoped CuO/TiO 2 NTs are only methanol and formaldehyde. These results indicate that the high valence Re doping promotes alcoholization and benefits C–C coupling, leading to selective conversion of CO 2 to ethanol …”

Section: Photoelectrochemical Co2 Reduction To Alcoholsmentioning

confidence: 99%

Recent Progress and Perspective of the Electrochemical Conversion of Carbon Dioxide to Alcohols

Kaliyaperumal,

Gupta,

Prasad

et al. 2023

ACS Eng. Au

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Since the industrial revolution, energy demand has increased, resulting in an increase in the atmospheric carbon dioxide concentration. Increasing CO2 concentration contributes to global warming and climate change. Strategies to alleviate CO2 emissions by reducing fossil fuel usage and replacing them with renewable energy sources have been devised to resolve this issue. In addition, there are several ways to reduce atmospheric CO2 concentrations including capture, utilization, and sequestration (CCUS). Electrochemical conversion of CO2 is a value-added approach to reducing carbon dioxide emissions as well as producing valuable chemicals, feedstocks, and building blocks. In this review, we report on the electrochemical reduction of CO2 to alcohols and the progress made over the past five years. Alcohols are critical liquid fuels with a higher energy density, ease of storage, and transportation. Herein, we discuss the possible mechanisms for converting CO2 to alcohols and various electrocatalysts employed for this conversion. Detailed studies compared the performances of the electrocatalysts based on the faradaic efficiency, current density, product selectivity, and stability. Furthermore, various types of electrochemical devices that can be used for the conversion of CO2 to alcohol are also discussed. Finally, the challenges and perspectives for further research are presented.

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“…Several strategies to enhance the process of H 2 CCHO*to-*OCHCH 3 on copper-based catalysts towards ethanol are emerging through engineering the morphology and facet, [5] tailoring vacancy, [6] introducing dopant, [7] synergizing bimetallic catalysis [8] and optimizing the valence state of copper. [8b, 9] Moreover, the asymmetrical refinement structure, which is a prerequisite of internal polarization, plays an important role in facilitating the generation of ethanol due to the strengthened adsorption of *CO (key intermediate for C 2 products) and the priority of *OCHCH 3 (toward to ethanol).…”

mentioning

confidence: 99%

Self‐Polarization Triggered Multiple Polar Units Toward Electrochemical Reduction of CO₂ to Ethanol with High Selectivity

et al. 2023

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Electrochemical conversion of CO 2 to highly valuable ethanol has been considered a intriguring strategy for carbon neutruality. However, the slow kinetics of coupling carbon-carbon (CÀ C) bonds, especially the low selectivity ethanol than ethylene in neutral conditions, is a significant challenge. Herein, the asymmetrical refinement structure with enhanced charge polarization is built in the vertically oriented bimetallic organic frameworks (NiCu-MOF) nanorod array with encapsulated Cu 2 O (Cu 2 O@MOF/CF), which can induce an intensive internal electric field to increase the CÀ C coupling for producing ethanol in neutral electrolyte. Particularly, when directly employed Cu 2 O@MOF/CF as the self-supporting electrode, the ethanol faradaic efficiency (FE ethanol ) could reach maximum 44.3 % with an energy efficiency of 27 % at a low working-potential of À 0.615 V versus the reversible hydrogen electrode (vs. RHE) using CO 2 -saturated 0.5 M KHCO 3 as the electrolyte. Experimental and theoretical studies suggest that the polarization of atomically localized electric fields derived from the asymmetric electron distribution can tune the moderate adsorption of *CO to assist the CÀ C coupling and reduce the formation energy of H 2 CCHO*-to-*OCHCH 3 for the generation of ethanol. Our research offers a reference for the design of highly active and selective electrocatalysts for reducing CO 2 to multicarbon chemicals.

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CO2 photoelectroreduction with enhanced ethanol selectivity by high valence rhenium-doped copper oxide composite catalysts

Cited by 12 publications

References 45 publications

Rhenium in Heterogeneous Catalysis: A Rising Star for Hydrogenation Reactions

Rhenium in Heterogeneous Catalysis: A Rising Star for Hydrogenation Reactions

Recent Progress and Perspective of the Electrochemical Conversion of Carbon Dioxide to Alcohols

Self‐Polarization Triggered Multiple Polar Units Toward Electrochemical Reduction of CO₂ to Ethanol with High Selectivity

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CO2 photoelectroreduction with enhanced ethanol selectivity by high valence rhenium-doped copper oxide composite catalysts

Cited by 12 publications

References 45 publications

Rhenium in Heterogeneous Catalysis: A Rising Star for Hydrogenation Reactions

Rhenium in Heterogeneous Catalysis: A Rising Star for Hydrogenation Reactions

Recent Progress and Perspective of the Electrochemical Conversion of Carbon Dioxide to Alcohols

Self‐Polarization Triggered Multiple Polar Units Toward Electrochemical Reduction of CO2 to Ethanol with High Selectivity

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Self‐Polarization Triggered Multiple Polar Units Toward Electrochemical Reduction of CO₂ to Ethanol with High Selectivity