1. Fabrication of porous octahedron-flowerlike microsphere NH2-UiO-66/CdIn2S4 heterojunction photocatalyst for enhanced photocatalytic CO2 reduction.
- Author
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Hong, Long-fei, Guo, Rui-tang, Zhang, Zhong-wei, Yuan, Ye, Ji, Xiang-yin, Lin, Zhi-dong, and Pan, Wei-guo
- Subjects
HETEROJUNCTIONS ,PHOTOREDUCTION ,GREENHOUSE effect ,CARBON dioxide ,CHARGE exchange ,SOLAR energy - Abstract
[Display omitted] • NH 2 -UiO-66/CdIn 2 S 4 composite exhibited superior CO 2 photoreduction activity. • NH 2 -UiO-66/CdIn 2 S 4 could achieve the rapid separation of photoexcited e
− /h+ pairs. • High CO 2 molecules adsorption activity of NH 2 -UiO-66/CdIn 2 S 4 composite. Solar-driven carbon dioxide (CO 2) photoreduction has been considered as an environmentally friendly and promising strategy to utilize solar energy and mitigate the impact of greenhouse effect. Designing novel cost-effective photocatalytic system with high CO 2 molecules adsorption activity is an efficient avenue to enhance CO 2 photoreduction performance. Herein, a series of NH 2 -UiO-66/CdIn 2 S 4 (NU66/CIS) photocatalysts with different NU66 contents were constructed via facile in-situ hydrothermal route and displayed graceful morphology. According to a series of characterization results, porous octahedron NU66 were deeply anchored on flowerlike 3D-microspheres CIS, and a part of the small-sized CIS were evenly dispersed on the surface of NU66. Without any sacrificial agent, the optimized 8% NU66/CIS heterojunctions still exhibited the satisfactory photocatalytic efficiency for CO 2 conversion, whose CO and CH 4 yields reached up to 11.24 μ mol g−1 h−1 and 2.92 μ mol g−1 h−1 , respectively, which were 2.87 and 3.31 folds higher than that of pristine CIS. The remarkably boosted activity of NU66/CIS was originated from the high specific surface area and the formation of heterostructure between the well-dispersed NU66 and CIS, which could promote the electron transfer during CO 2 photocatalytic reduction. [ABSTRACT FROM AUTHOR]- Published
- 2021
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