Cu/TiO2 nanoparticles modified nitrogen-doped graphene as a highly efficient catalyst for the selective electroreduction of CO2 to different alcohols. (March 2018)

• Record Type: Journal Article
• Authors: Yuan, Jing; Yang, Man-Ping; Hu, Qiao-Li; Li, Shi-Ming; Wang, Huan; Lu, Jia-Xing
• Is Part Of: Journal of CO₂ utilization. Volume 24(2018)
• Page Start: 334
• Page End: 340
• Publication Date: 2018-03
• Subjects: Carbon dioxide -- Electroreduction -- Cu/TiO2/NG electrode -- Methanol -- Ethanol; Carbon dioxide -- Periodicals; Carbon dioxide -- Environmental aspects -- Periodicals; Carbon dioxide mitigation -- Periodicals; Carbon dioxide; Carbon dioxide -- Environmental aspects; Carbon dioxide mitigation; Periodicals; 628.53205
• DOI: 10.1016/j.jcou.2018.01.021
• Languages: English
• ISSNs: 2212-9820

Abstract

Graphical abstract: Highlights: Cu/TiO2 nanoparticles anchored onto N-doped graphene (Cu/TiO2 /NG) are prepared by a facile strategy for the first time. The resulting solid powder catalyst exhibits high active, selective and stable for electroreduction CO2 . Cu/TiO2 /NG nanocomposite has dual catalytic activity for the electrochemical reduction of CO2 . Abstract: The construction of an efficient and robust catalyst for the electrochemical reduction of carbon dioxide into energy-rich products has recently received considerable attention. Herein, a Cu/TiO2 nanoparticles modified nitrogen-doped graphene (Cu/TiO2 /NG) carbon material is fabricated for the selective reduction of CO2 into different alcohols. We found the Cu/TiO2 /NG nanocomposite across a range of potentials for the electroreduction of CO2 exhibits dual catalytic ability, possessing an outstanding ability to produce methanol (reaching a maximum faradaic efficiency of 19.5% at a potential of −0.20 V vs. the reversible hydrogen electrode (RHE)) and a capability to produce ethanol (with a high faradaic efficiency up to 43.6% at −0.75 V vs. RHE). In addition, the Cu/TiO2 /NG composite shows remarkable stability and reusability at both reductive potentials in the electrochemical process. The designed Cu/TiO2 /NG composite may offer a new simple method based on earth-abundant metals to construct robust electrocatalysts for CO2 reduction.