Journal ArticleDOI
Efficient Electrochemical Reduction of Carbon Dioxide to Acetate on Nitrogen-Doped Nanodiamond
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TLDR
N-doped nanodiamond/Si rod array (NDD/Si RA) was proposed as an efficient nonmetallic electrocatalyst for CO2 reduction and preferentially and rapidly converted CO2 to acetate over formate with an onset potential of -0.36 V, overcoming the usual limitation of low selectivity for C2 products.Abstract:
Electrochemical reduction of CO2 is an attractive technique for reducing CO2 emission and converting it into useful chemicals, but it suffers from high overpotential, low efficiency or poor product selectivity. Here, N-doped nanodiamond/Si rod array (NDD/Si RA) was proposed as an efficient nonmetallic electrocatalyst for CO2 reduction. It preferentially and rapidly converted CO2 to acetate over formate with an onset potential of −0.36 V (vs RHE), overcoming the usual limitation of low selectivity for C2 products. Moreover, faradic efficiency of 91.2–91.8% has been achieved for CO2 reduction at −0.8 to −1.0 V. Its superior performance for CO2 reduction can be attributed to its high overpotential for hydrogen evolution and N doping, where N-sp3C species was highly active for CO2 reduction. Electrokinetic data and in situ infrared spectrum revealed the main pathway for CO2 reduction might be CO2 → CO2•– → (COO)2• → CH3COO–.read more
Citations
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Advances and challenges in understanding the electrocatalytic conversion of carbon dioxide to fuels
Yuvraj Y. Birdja,Yuvraj Y. Birdja,Elena Pérez-Gallent,Marta C. Figueiredo,Marta C. Figueiredo,Adrien J. Göttle,Federico Calle-Vallejo,Federico Calle-Vallejo,Marc T. M. Koper +8 more
TL;DR: In this article, the authors review recent advances and challenges in the understanding of electrochemical CO2 reduction and discuss existing models for the initial activation of CO2 on the electrocatalyst and their importance for understanding selectivity.
Journal ArticleDOI
Electrochemical Reduction of N2 under Ambient Conditions for Artificial N2 Fixation and Renewable Energy Storage Using N2/NH3 Cycle
Di Bao,Di Bao,Qi Zhang,Fan-Lu Meng,Fan-Lu Meng,Hai-Xia Zhong,Miao-Miao Shi,Miao-Miao Shi,Yu Zhang,Jun-Min Yan,Qing Jiang,Xin-Bo Zhang +11 more
TL;DR: Using tetrahexahedral gold nanorods as a heterogeneous electrocatalyst, an electrocatalytic N2 reduction reaction was shown to be possible at room temperature and atmospheric pressure, with a high Faradic efficiency up to 4.02% at -0.2 V vs reversible hydrogen electrode.
Journal ArticleDOI
Selective visible-light-driven photocatalytic CO 2 reduction to CH 4 mediated by atomically thin CuIn 5 S 8 layers
Xiaodong Li,Yongfu Sun,Jiaqi Xu,Yanjie Shao,Ju Wu,Xiaoliang Xu,Pan Yang,Huanxin Ju,Junfa Zhu,Yi Xie +9 more
TL;DR: In this article, the authors show that the formation of a highly stable Cu-C-O-In intermediate at the Cu-In dual sites is the key feature determining selectivity.
Journal ArticleDOI
Rational catalyst and electrolyte design for CO2 electroreduction towards multicarbon products
TL;DR: In this article, the authors discuss strategies to achieve high selectivity towards multicarbon products via rational catalyst and electrolyte design, focusing on findings extracted from in situ and operando characterizations.
Journal ArticleDOI
Nanostructured Materials for Heterogeneous Electrocatalytic CO2 Reduction and their Related Reaction Mechanisms
TL;DR: Recent progress on the design and synthesis of solid-state catalysts for the electrochemical reduction of CO2 is described, followed by the general parameters for CO2 electroreduction and a summary of the reaction apparatus.
References
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Journal ArticleDOI
The properties and applications of nanodiamonds
TL;DR: The rational control of the mechanical, chemical, electronic and optical properties of nanodiamonds through surface doping, interior doping and the introduction of functional groups are discussed.
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A review of catalysts for the electroreduction of carbon dioxide to produce low-carbon fuels
TL;DR: The challenges in achieving highly active and stable CO2 reduction electrocatalysts are analyzed, and several research directions for practical applications are proposed, with the aim of mitigating performance degradation, overcoming additional challenges, and facilitating research and development in this area.
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New insights into the electrochemical reduction of carbon dioxide on metallic copper surfaces
TL;DR: In this paper, the authors report new insights into the electrochemical reduction of CO2 on a metallic copper surface, enabled by the development of an experimental methodology with unprecedented sensitivity for the identification and quantification of CO 2 electroreduction products.
Journal ArticleDOI
Hydrogen evolution by a metal-free electrocatalyst
Yao Zheng,Yan Jiao,Yihan Zhu,Lu Hua Li,Yu Han,Ying Chen,Aijun Du,Mietek Jaroniec,Shi-Zhang Qiao +8 more
TL;DR: This work couple graphitic-carbon nitride with nitrogen-doped graphene to produce a metal-free hybrid catalyst, which shows an unexpected hydrogen evolution reaction activity with comparable overpotential and Tafel slope to some of well-developed metallic catalysts.
Journal ArticleDOI
The teraton challenge. A review of fixation and transformation of carbon dioxide
TL;DR: In this paper, the authors present a review of CO2, its synthetic reactions and their possible role in future CO2 mitigation schemes that have to match the scale of man-made CO2 in the atmosphere, which rapidly approaches 1 teraton.