Construction of single-atom copper sites with low coordination number for efficient CO₂ electroreduction to CH₄

Abstract

Generally speaking, the preparation of single-atom catalysts always requires harsh conditions such as high-temperature pyrolysis or strong acid etching. In this manuscript, a simple and effective plasma-activated strategy is employed...

Bimetallic Cobalt–Copper Nanoparticle-Decorated Hollow Carbon Nanofibers for Efficient CO2 Electroreduction

“…Compared with Co/CFs (31.5 mF cm −2 ), Cu/CFs (17.5 mF cm −2 ), CoCu/CFs (30.0 mF cm −2 ), and CoCu 3 /CFs (21.5 mF cm −2 ), Co 3 Cu/CFs have a much higher C dl value of 45.5 mF cm −2 (Supplementary Figure S13), manifesting the larger ECSA and more active sites for CO 2 reduction (Yang et al, 2020b;Hao et al, 2022). In addition, the EIS curves in Figure 5B prove that Co 3 Cu/CFs show a relatively small impedance than those of the other samples, which is beneficial to faster electron transport as well as better conductivity (Wei et al, 2022;Liu et al, 2014). The larger ECSA and good conductivity of Co 3 Cu/CFs is consistent with its higher current densities in LSV and electrolysis tests.…”

“…Therefore, a series of catalysts have been constructed to enhance the efficiency of CO 2 electroreduction, including molecular catalysts (Appel and Helm, 2014;Nichols and Machan, 2019;and Bonin et al, 2017), heterodoped carbon catalysts (Sun, 2021;Kumar et al, 2013), oxide-derived catalysts (Duan et al, 2021;Duan et al, 2018), single-atom catalysts (Yang et al, 2019;Chen Jia et al, 2021;Wei et al, 2022;and Zhang et al, 2022), and multimetallic catalysts (Lin Jia et al, 2021;Vasileff et al, 2018;and Jia et al, 2022). Among these available catalysts, bimetallic catalysts have exhibited remarkable performance in CO 2 reduction.…”

Recent advances and future perspectives in MOF-derived single-atom catalysts and their application: a review

“…), atomic layer deposition method (ALD), 7,8 pyrolysis method, and mass-separation soft landing method. 9 Currently, various metal-based SACs have been successfully developed, incorporating metals such as platinum, 10 cobalt, 11 iron, 12 copper, 13,14 bismuth, 15 palladium, 16 ruthenium, 17 nickel, 10 and silver, 18 and their various applications are also introduced. For the characterization of SACs, it is tough to efficiently distinguish the existence of single metal atoms.…”

Constructing an all zero-dimensional CsPbBr3/CdSe heterojunction for highly efficient photocatalytic CO2reduction

“…Articial photosynthesis using solar-energy-driven CO 2 conversion into valuable clean fuels has been regarded as a promising pathway to simultaneously address the energy crisis and environmental problems. [1][2][3][4] Accordingly, enormous efforts have been devoted to exploring advanced photocatalytic materials for efficient CO 2 reduction, [5][6][7][8][9] ranging from noble metals, molecular/metal complexes, and conductive polymers, to inorganic semiconductors. [10][11][12][13] Nevertheless, CO 2 conversion still suffers from low activity, large energy consumption, and serious charge recombination owing to its complex multielectron reduction reaction kinetics.…”