“In situ Irradiated XPS Investigation on S‐Scheme TiO 2 @ZnIn 2 S 4 Photocatalyst for Efficient Photocatalytic CO 2 Reduction” (2021), by Libo Wang et al. Energy research paper. Original abstract below, unchanged. No free PDF was found.

In situ Irradiated XPS Investigation on S‐Scheme TiO 2 @ZnIn 2 S 4 Photocatalyst for Efficient Photocatalytic CO 2 Reduction

Libo Wang, Bei Cheng, Liuyang Zhang et al. · September 12, 2021 · Energy

Abstract

Reasonable design of efficient hierarchical photocatalysts has gained significant attention. Herein, a step‐scheme (S‐scheme) core‐shell TiO 2 @ZnIn 2 S 4 heterojunction is designed for photocatalytic CO 2 reduction. The optimized sample exhibits much higher CO 2 photoreduction conversion rates (the sum yield of CO, CH 3 OH, and CH 4 ) than the blank control, i.e., ZnIn 2 S 4 and TiO 2 . The improved photocatalytic performance can be attributed to the inhibited recombination of photogenerated charge carriers induced by S‐scheme heterojunction. The improvement is also attributed to the large specific surface areas and abundant active sites. Meanwhile, S‐scheme photogenerated charge transfer mechanism is testified by in situ irradiated X‐ray photoelectron spectroscopy, work function calculation, and electron paramagnetic resonance measurements. This work provides an effective strategy for designing highly efficient heterojunction photocatalysts for conversion of solar fuels.

Source page DOI: 10.1002/smll.202103447