Gao, Junyu;
Wu, Fan;
Zhao, Yunxuan;
Bian, Xuanang;
Zhou, Chao;
Tang, Junwang;
Zhang, Tierui;
(2023)
Tuning the Interfaces of ZnO/ZnCr2O4 Derived from Layered-Double-Hydroxide Precursors to Advance Nitrogen Photofixation.
ChemSusChem: Chemistry-Sustainability-Energy-Materials
, 16
(22)
, Article e202300944. 10.1002/cssc.202300944.
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Abstract
Drawing inspiration from the enzyme nitrogenase in nature, researchers are increasingly delving into semiconductor photocatalytic nitrogen fixation due to its similar surface catalytic processes. Herein, we reported a facile and efficient approach to achieving the regulation of ZnO/ZnCr2O4 photocatalysts with ZnCr-layered double hydroxide (ZnCr-LDH) as precursors. By optimizing the composition ratio of Zn/Cr in ZnCr-LDH to tune interfaces, we can achieve an enhanced nitrogen photofixation performance (an ammonia evolution rate of 31.7 μmol g−1 h−1 using pure water as a proton source) under ambient conditions. Further, photo-electrochemical measurements and transient surface photovoltage spectroscopy revealed that the enhanced photocatalytic activity can be ascribed to the effective carrier separation efficiency, originating from the abundant composite interfaces. This work further demonstrated a promising and viable strategy for the synthesis of nanocomposite photocatalysts for nitrogen photofixation and other challenging photocatalytic reactions.
Type: | Article |
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Title: | Tuning the Interfaces of ZnO/ZnCr2O4 Derived from Layered-Double-Hydroxide Precursors to Advance Nitrogen Photofixation |
Location: | Germany |
Open access status: | An open access version is available from UCL Discovery |
DOI: | 10.1002/cssc.202300944 |
Publisher version: | https://doi.org/10.1002/cssc.202300944 |
Language: | English |
Additional information: | This version is the author accepted manuscript. For information on re-use, please refer to the publisher’s terms and conditions. |
Keywords: | Layered double hydroxide; interface; photocatalysis; nitrogen fixation; ZnO/ZnCr2O4 |
UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Chemical Engineering |
URI: | https://discovery.ucl.ac.uk/id/eprint/10178066 |
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