Heterogeneous Structure of Sn/SnO 2 Constructed via Phase Engineering for Efficient and Stable CO 2 Reduction.
Zhipeng LiuChang LiuSuhua MaoXiaoxi HuangPublished in: ACS applied materials & interfaces (2023)
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.
Keyphrases
- room temperature
- carbon dioxide
- reduced graphene oxide
- ionic liquid
- perovskite solar cells
- gold nanoparticles
- wastewater treatment
- highly efficient
- oxide nanoparticles
- metal organic framework
- mass spectrometry
- label free
- electron transfer
- climate change
- high resolution
- risk assessment
- molecularly imprinted
- solid phase extraction