graphene-based Fe SACs.By changing the local coordination environment of Fe single atoms,26 systems were constructed.Theoretical results show that,among these systems,the Fe SAC coordinated with four pyrrole N atoms and that co-coordinated with three pyridine N atoms and one O atom exhibit ...
a single-atom iron catalyst is fabricated by saturated adsorption of trace iron onto zeolitic imidazolate framework-8 (ZIF-8) followed by pyrolysis. Its performance toward catalytic transfer hydrogenation of furfural is comparable to state-of-the-art catalysts and up to four orders higher than ...
In catalysis, TOF is the best figure of merit to compare the intrinsic activities of catalysts with different surface areas or loadings41. Assuming that all single metal atoms in the catalyst are active and accessible to the electrolyte, the upper limit number of the active sites for Ni/GD ...
in a flow cell at an impressive rate of 29.6 mol g−1h−1at 200 mA cm−2. This work achieves structural fine-tuning of metal single-atom sites at the trace level and provides topological insights into single-atom catalyst design to achieve cost-efficient hydrogen peroxide prod...
It was demonstrated in several studies that carbon materials could be better catalyst support for NO reduction [3], [4], [5], [6]. Among these, embedding noble metals (Ag, Pt, Cr, etc.) or transition metal (Fe, V, Ce, etc.) into the surface of semi-coke (SC) or graphene can...
Single atom iron catalyst for simultaneous removal of arsenic and lead. • The adsorption mechanism of As2O3, Pb0, PbO and PbCl2. • The effect of temperature and competitive adsorption with Hg0. Abstract Arsenic and lead released from coal-fired power plant have caused great damage to en...
Scalable two-step annealing method for preparing ultra-high-density single-atom catalyst libraries. Nat. Nanotechnol. 17, 174–181 (2022). Article ADS CAS PubMed Google Scholar Zeng, Y. et al. Tuning the thermal activation atmosphere breaks the activity–stability trade-off of Fe–N–C ...
Herein, we made a highly reactive and stable isolated single‐atom Fe/N‐doped porous carbon (ISA Fe/CN) catalystwith Fe loading up to 2.16wt%. The catalyst showed excellent ORR performance with a half‐wave potential (E1/2) of 0.900V, which outperformed commercial Pt/C and most non‐...
Performance enhancement and degradation mechanism identification of a single-atom Co–N–C catalyst for proton exchange membrane fuel cells. Nat. Catal. 3, 1044–1054 (2020). Article CAS Google Scholar Banham, D. et al. Critical advancements in achieving high power and stable nonprecious metal ...
single-atom iron active center, the catalyst shows a remarkable performance with enhanced kinetics and activity for oxygen reduction in both alkaline and acid media. Moreover, the catalyst shows promise for substitution of expensive platinum to drive the cathodic oxygen reduction reaction in zinc-air...