Photoelectrocatalytic Reduction of Carbon Dioxide to Methanol Using CuFe2O4 Modified with Graphene Oxide under Visible Light Irradiation

作者：Kaykobad Md. Rezaul Karim, Mostafa Tarek, Huei Ruey Ong, Hamidah Abdullah, Abu Yousuf, Chin Kui Cheng, Md. Maksudur Rahman Khan · 发表于：Industrial & Engineering Chemistry Research · 年份：2018 · DOI：10.1021/acs.iecr.8b03569 · 被引用次数：83 · 研究领域：Advanced Photocatalysis Techniques、CO2 Reduction Techniques and Catalysts、Copper-based nanomaterials and applications

Photoelectrocatalytic reduction of CO 2 into valuable products can provide energy in a sustainable way with leveling off of the concentration of CO 2 in our environment. In this study, graphene oxide (GO) incorporated with copper ferrite (CuFe 2 O 4 ) has been employed to enhance photoelectrocatalytic CO 2 reduction under visible light. The TEM and XPS characterization indicated a strong interaction between the CuFe 2 O 4 and GO in the hybrid catalyst. The GO incorporation reduced the e – /h + recombination in the hybrid catalyst by trapping the photoexcited electrons from CuFe 2 O 4 leading to high methanol yield of 28.8 μmol L –1 cm –2 at 20.5% quantum efficiency. The incident photon current efficiency (IPCE) and Faradaic efficiency for methanol formation were observed as 8.02% and 87%, respectively. The results showed that the photoelectrocatalytic activity for CO 2 reduction can be improved by incorporating GO with CuFe 2 O 4, and it provides a universal platform to fabricate GO–CuFe 2 O 4 based hybrid photocatalyst with promising applications in CO 2 reduction.