Hydrogen-bond engineering and nitrogen vacancies have been proposed separately to significantly tune the photoactivities of g-C3N4. Nevertheless, the intrinsic relationships between hydrogen-bond, nitrogen vacancies and photo-performance are still unclear. Herein,...

The electrochemical carbon dioxide reduction reaction (CO 2 RR) catalyzed by Sn-based materials shows great potential for CO 2 -to-formate conversion. The presence of tin species with different oxidation states can promote the catalytic performance, most likely due to the interfaces of metallic and oxide phases that induce a synergistic effect. Therefore, it is desirable yet challenging to synthesize a hybrid catalyst with abundant active heterogeneous interfaces. Herein, we synthesize a hybrid catalyst constructed by decorating nanosized SnS 2 in the SnO 2 matrix. The uniformly distributed SnS 2 nanoparticles are first reduced to metallic tin, which assists in the generation of abundant Sn/SnO 2 heterogeneous interfaces under the in situ reduction process. Because of the electronic modulation at the heterogeneous interfaces, the resulting catalyst delivers a high current density of 200 mA• cm −2 at −0.86 V vs RHE, and the performance is stable for over 20 h. This work suggests a potentially powerful interface engineering strategy for the development of high-performance electrocatalysts for the CO 2 RR.

Graphene‐like nitrogen‐doped porous carbon nanosheets (NPCN) with high specific surface area are successfully prepared via selecting glucose as a carbon precursor and simultaneously, g‐C3N4 as a self‐sacrifice template and nitrogen source. Benefiting from its large porosity, high specific surface area, and nitrogen doping properties (mainly pyridinic nitrogen), the as‐obtained NPCN‐800 shows multifunctional applications as electrode material for lithium‐ion batteries (LIBs) and catalyst for oxygen reduction reactions (ORR). For LIBs application, the NPCN‐800 delivers the high reversible capacity of 1286 mAh g−1 at 0.1 A g−1, rate capability of 258 mAh g−1 at 10 A g−1, and cycle stability of 818 mAh g−1 at 0.2 A g−1 after 200 cycles. In addition, NPCN‐800 exhibits good ORR catalytic activity. Therefore, these attributes make NPCN an auspicious candidate for LIBs and ORR. This simple strategy for preparing nitrogen‐doped carbon‐based materials provides an efficient way to exploit cost‐effective electrode materials for LIBs and catalysts for ORR.