We report single-atom Cu catalysts dispersed on nitrogen-doped carbon by a nitrogen-coordination strategy. The presence of nitrogen enabled good dispersion and attachment atomic species the frameworks with Cu–Nx configurations. doping concentrations configurations were well-tuned pyrolysis temperature. At high concentration 4.9%mol, distance between neighboring was close enough to enable C–C coupling produce C2H4. In contrast, at lower than 2.4%mol, large so that electrocatalyst favored...

Abstract Electrochemical CO 2 reduction can produce valuable products with high energy densities but the process is plagued by poor selectivities and low yields. Propanol represents a challenging product to obtain due complicated C 3 forming mechanism that requires both stabilization of *C intermediates subsequent 1 –C coupling. Herein, density function theory calculations revealed double sulfur vacancies formed on hexagonal copper sulfide feature as efficient electrocatalytic centers for...

Abstract Copper‐based catalysts electrochemically convert CO 2 into multicarbon molecules. However, the selectivity toward alcohol products has remained relatively low, due to lack of favoring adsorption key intermediates in pathways. Herein, a Cu 3 Ag 1 electrocatalyst is developed using galvanic replacement an electrodeposited matrix. The enables 63% Faradaic efficiency for ‐to‐alcohol production and partial current density −25 mA cm −2 at −0.95 V versus reversible hydrogen electrode,...

Non-copper electrocatalysts are seldom reported to generate C2+ products, and the efficiency over these catalysts is low. In this work, we report a nitrogen-doped γ-Fe2O3 (xFe2O3-N@CN) electrocatalyst, which yield C2H6 as major product in an H-cell. At −2.0 V vs Ag/Ag+, Faradaic (FE) for ethane reaches 42% with current density of 32 mA cm–2. This first about selective CO2 reduction (C2H6) iron-based catalyst. The results showed that catalyst possessing FeO1.5–nNn sites enriched oxygen...

The electrochemical conversion of CO2 into multicarbon (C2) products on Cu-based catalysts is strongly affected by the surface coverage adsorbed CO (*CO) intermediates and subsequent C–C coupling. However, increased *CO inevitably leads to strong repulsion a reduced coupling efficiency, thus resulting in suboptimal CO2-to-C2 activity selectivity, especially at ampere-level electrolysis current densities. Herein, we developed an atomically ordered Cu9Ga4 intermetallic compound consisting Cu...

Abstract The efficient ethanol electrosynthesis from CO 2 is challenging with low selectivity at high electrolysis rates, due to the competition H and other reduction products. Copper‐based bimetallic electrocatalysts are potential candidates for ‐to‐ethanol conversion, but secondary metal has mainly been focused on active components (such as Ag, Sn) electroreduction, which also promote of ethylene or products rather than ethanol. Limited attention given alkali‐earth metals their inherently...

Herein, we designed VS₂ modified with graphene for AIBs, which delivers better cycling performance. Electrochemical characterizations confirm that the layered framework of is suitable Al³⁺ ions intercalation.

Monodispersed single metal atoms have been demonstrated with unique potentials for electroreduction of CO2 or CO, while the capability producing multicarbon (C2+) products is still limited. In this work, we developed a dual atomic catalyst uniform distributions two adjacent Cu–Cu Cu–Ni anchored on nitrogen-doped carbon frameworks, featuring distinctive catalytic sites CO electroreduction. Due to synergistic effect between sites, enables efficient C2+ an outstanding Faradaic efficiency ∼91%...

The electrochemical CO2 conversion to formate is a promising approach for reducing level and obtaining value-added chemicals, but its partial current density still insufficient meet the industrial demands. Herein, we developed surface-lithium-doped tin (s-SnLi) catalyst by controlled lithiation. Density functional theory calculations indicated that Li dopants introduced electron localization lattice strains on Sn surface, thus enhancing both activity selectivity of electroreduction formate....

A three-dimensional porous MoS2/chitosan (MoS2/CS) aerogel with excellent mechanical strength and stability was constructed in this work through anchoring MoS2 to the surface of CS aerogel. It is found that MoS2/CS can effectively recover gold from thiosulfate solution via direct situ reduction Au(I) Au0 under sunlight, thus realizing one-step recovery gold, which greatly benefits development leaching for extraction. Furthermore, according results photocurrent, ultraviolet–visible...

Abstract Electrochemical CO 2 reduction to produce valuable C products is attractive but still suffers with relatively poor selectivity and stability at high current densities, mainly due the low efficiency in coupling of two *CO intermediates. Herein, it demonstrated that high‐density nitrogen vacancies formed on cubic copper nitrite (Cu 3 N x ) feature as efficient electrocatalytic centers for CO–CO form key OCCO* intermediate toward products. Cu different densities are fabricated by an...

The high-rate electrochemical CO2 conversion to ethanol with high partial current density is attractive but challenging, which requires competing other reduction products as well hydrogen evolution. This work demonstrates the in situ reconstruction of KCuF3 perovskite under electroreduction conditions fabricate a surface fluorine-bonded, single-potassium-atom-modified Cu(111) nanocrystal (K-F-Cu-CO2 ). Density functional theory calculations reveal that co-modification both F and K atoms on...

Molecular catalysts have been receiving increasingly attention in the electrochemical CO2 reduction reaction (CO2 RR) with attractive features such as precise catalytic sites and tunable ligands. However, insufficient activity low selectivity of deep products restrain utilization molecular RR. Herein, a donor-acceptor modified Cu porphyrin (CuTAPP) is developed, which amino groups are linked to donate electrons toward central CuN4 site enhance RR activity. The CuTAPP catalyst exhibited an...

Electrochemical carbon monoxide reduction reaction (CORR) is a potential route to produce high value-added products such as methanol but currently still suffers from low partial current densities. Herein, we developed Rh1Cu4 alloy with isolated Rh sites homogeneously distributed inside the Cu framework for CO-to-methanol electrosynthesis. Density functional calculations revealed that these enabled enhanced *H coverage on catalyst and were favorable hydrogenation of *CH2OH, which allowed...

Cationic surfactants in water are difficult to be degraded, leading serious pollution. In this work, graphene oxide (GO) was used as an adsorbent for removing Dodecylamine Hydrochloride (DACl), a representative cationic surfactant. X-ray diffraction (XRD), FT-IR spectroscopy and atomic force microscope (AFM) were characterize the prepared GO. The adsorption of DACl on GO have been investigated through measurements capacity, zeta potential, FTIR, photoelectron (XPS). experimental results...

Ultrathin 2D conductive cobalt–hexaaminobenzene metal–organic coordination polymer nanosheets (Co–HAB-NSs) exhibit high activity and stability toward the OER.

It is widely acknowledged that clay minerals have detrimental effects on the process of flotation, but mechanisms involved are still not fully understood. In this work, montmorillonite, kaolinite, and illite pyrite flotation were investigated from perspective various structures minerals. Flotation tests suggested effect increased as follows: montmorillonite > kaolinite illite. With help rheology measurements, it was found significantly pulp viscosity, which in turn substantially reduced...

Abstract The electrochemical CO 2 reduction to CH 4 is a promising approach for producing highly specific combustion fuel but has relatively poor selectivity and activity at high‐current‐density electrolysis. In this work, ultrathin CuGaO nanosheets with exposed single‐interlayered Cu edges are synthesized via an induced anisotropic growth strategy. Density functional theory calculations indicate that the Cu(I) on (001) surface of present high‐density single‐atomic sites, which feature...