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Electrocatalytic Oxygen Reduction
In article number 2207991, Cheng‐Yan Xu and co‐workers develop a self‐sacrificing strategy to encapsulate single‐atom Fe‐N4O1 species into carbon hollow spheres assembled by ultrathin nanosheets Fe1–N–C hollow microspheres (Fe1/N‐HCMs). Such highly open architecture is supposed to be an ideal platform to isolate and fully expose single metal atoms. Benifiting from...
Single‐atom Fe–N–C (Fe1–N–C) materials represent the benchmarked electrocatalysts for oxygen reduction reaction (ORR). However, single Fe atoms in the carbon skeletons cannot be fully utilized due to the mass transfer limitation, severely restricting their intrinsic ORR properties. Herein, a self‐sacrificing template strategy is developed to fabricate ultrathin nanosheets assembled Fe1–N–C hollow...
Enrichment of UVI is an urgent project for nuclear energy development. Herein, magnetic graphitic carbon nitride nanosheets were successfully prepared by in situ anchoring of pyrrhotite (Fe7S8) on the graphitic carbon nitride nanosheet (CNNS), which were used for capturing UVI. The structural characterizations of Fe7S8/CNNS‐1 indicated that the CNNS could prevent the aggregation of Fe7S8 and the saturation...
Robust hollow spheres consisting of molecular‐scale alternating titania (Ti0.91O2) nanosheets and graphene (G) nanosheets are successfully fabricated by a layer‐by‐layer assembly technique with polymer beads as sacrificial templates using a microwave irradiation technique to simultaneously remove the template and reduce graphene oxide into graphene. The molecular scale, 2D contact of Ti0.91O2 nanosheets...
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