Near-infrared absorbing 2D/3D ZnInS/N-doped graphene photocatalyst for highly efficient CO capture and photocatalytic reduction
Science China Materials, ISSN: 2199-4501, Vol: 63, Issue: 4, Page: 552-565
2020
- 168Citations
- 51Captures
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Article Description
Hierarchical heterostructure photocatalysts with broad spectrum solar light utilization, particularly in the near-infrared (NIR) region, are emerging classes of advanced photocatalytic materials for solar-driven CO conversion into value-added chemical feedstocks. Herein, a novel two-demensional/three-demensional (2D/3D) hierarchical composite is hydrothermally synthesized by assembling vertically-aligned ZnInS (ZIS) nanowall arrays on nitrogen-doped graphene foams (NGF). The prepared ZIS/NGF composite shows enhancement in photothermal conversion ability and selective CO capture as well as solar-driven CO photoreduction. At 273 K and 1 atm, the ZIS/NGF composite with 1.0 wt% NGF achieves a comparably high CO-to-N selectivity of 30.1, with an isosteric heat of CO adsorption of 48.2 kJ mol. And in the absence of cocatalysts and sacrificial agents, the ZIS/NGF composite with cyclability converts CO into CH, CO and CHOH under simulated solar light illumination, with the respective evolution rates about 9.1, 3.5, and 5.9 times higher than that of the pristine ZIS. In-depth analysis using in-situ irradiated X-ray photoelectron spectroscopy (ISI-XPS) in conjunction with Kelvin probe measurements reveals the underlying charge transfer pathway and process from ZIS to NGF.
Bibliographic Details
http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=85077696729&origin=inward; http://dx.doi.org/10.1007/s40843-019-1234-x; http://link.springer.com/10.1007/s40843-019-1234-x; http://link.springer.com/content/pdf/10.1007/s40843-019-1234-x.pdf; http://link.springer.com/article/10.1007/s40843-019-1234-x/fulltext.html; https://dx.doi.org/10.1007/s40843-019-1234-x; https://link.springer.com/article/10.1007/s40843-019-1234-x
Springer Science and Business Media LLC
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