Jun 11, 2020 · Since the water treatment process must be carried out at ambient temperature, noble metals with potential toxicity, such as Pd, Rh, and Pt, had to be used primarily to achieve high activity. Nevertheless, the activity and selectivity for nitrogen have not been simultaneously satisfying, especially for tapwater treatment, until recent studies [2
ActivitySelectivity Trends in the Electrochemical CoNC catalyst was uncovered with outstanding H2O2 productivity considering its high ORR activity, highest H2O2 selectivity, and lowest H2O2RR activity. The activityselectivity trend over MNC materials was further analyzed by density functional theory, providing molecular-scale understandings of experimental volcano trends for four- and two-electron ORR.
of the metal, nitrogen, and carbon.3538 Henceforth, such pyrolyzed materials are denoted as MNC. Among them, most studies focused on FeNC materials due to their high catalytic activity and selectivity toward four-electron ORR,35,37,39 thus achieving high energy conversion eciency in fuel cells and metalair batteries.
Bi-Atom Electrocatalyst for Electrochemical Nitrogen The electrochemical nitrogen reduction reaction (NRR) to directly produce NH3 from N2 and H2O under ambient conditions has attracted significant attention due to its ecofriendliness. Nevertheless, the electrochemical NRR presents several practical challenges, including sluggish reaction and low selectivity. Here, bi-atom catalysts have been proposed to achieve excellent activity and high
Bismuth Oxychloride Dispersed on Nitrogen-Doped Carbon Electrochemical reduction of CO 2 has received significant interest for converting CO 2 to value added products and closing the carbon cycle. Recent advances through catalyst development have aided in satisfying the requirements of achieving a high product selectivity, activity and long-term stability.
High conversion (98%) and almost 100% selectivity for nitrogen were obtained in nitrate photocatalytic reduction with the use of nontoxic and relatively low-cost fine Ag clusters photodeposited on nanosized titanium dioxide particles as catalyst (denoted as Ag/TiO 2) and formic acid as an effective
High-Throughput Screening of Synergistic Transition Metal It remains a great challenge to design efficient electrocatalysts for nitrogen reduction reaction (NRR) with high activity and high selectivity.
Single-Atom Catalysts:Synthetic Strategies and Jul 18, 2018 · This Ni SAs/N-C catalyst exhibited excellent activity and selectivity for the CO 2 RR, achieving a high turnover frequency (TOF) of 5,273 hr 1 and a great Faradaic efficiency, over 71.9%, for CO production at an overpotential of 0.89 V (Figures 7A and 7B).
Mar 04, 2021 · Specially, CrN2B2 ( = 4B), VN2B2 ( = 3B) and MoN2B2 ( = 2B) demonstrate high activity and selectivity to eNRR. The asymmetric ligands of N2B2 are deemed to be superior over mono-symmetric ligands.
Tuning the Catalytic Preference of Ruthenium Catalysts the relatively high activity and selectivity of NRR at single-atom Ru is due to an up-shift of the d-electron energies from Ru bulk to a Ru single atom, which in turn tunes the reaction thermo-Tackling the Activity and Selectivity Challenges of Achieving High Activity and Selectivity of Nitrogen Reduction via FeN3 Coordination on Iron Single-Atom Electrocatalysts at Ambient Conditions. ACS Sustainable Chemistry & Engineering 2020, 8 (34) , 12809-12816. https://doi/10.1021/acssuschemeng.0c02701; Juan Wang, Junru Wang, Siyun Qi, Mingwen Zhao.