Journal ArticleDOI
Refining Defect States in W18O49 by Mo Doping: A Strategy for Tuning N2 Activation towards Solar-Driven Nitrogen Fixation.
Ning Zhang,Abdul Jalil,Daoxiong Wu,Shuangming Chen,Yifei Liu,Chao Gao,Wei Ye,Zeming Qi,Huanxin Ju,Chengming Wang,Xiaojun Wu,Li Song,Junfa Zhu,Yujie Xiong +13 more
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TLDR
It is reported that the bottleneck can be well tackled by refining the defect states in photocatalysts via doping, which provides fresh insights into the design of photocatalyst lattice for N2 fixation and reaffirms the versatility of subtle electronic structure modulation in tuning catalytic activity.Abstract:
Photocatalysis may provide an intriguing approach to nitrogen fixation, which relies on the transfer of photoexcited electrons to the ultrastable N≡N bond. Upon N2 chemisorption at active sites (e.g., surface defects), the N2 molecules have yet to receive energetic electrons toward efficient activation and dissociation, often forming a bottleneck. Herein, we report that the bottleneck can be well tackled by refining the defect states in photocatalysts via doping. As a proof of concept, W18O49 ultrathin nanowires are employed as a model material for subtle Mo doping, in which the coordinatively unsaturated (CUS) metal atoms with oxygen defects serve as the sites for N2 chemisorption and electron transfer. The doped low-valence Mo species play multiple roles in facilitating N2 activation and dissociation by refining the defect states of W18O49: (1) polarizing the chemisorbed N2 molecules and facilitating the electron transfer from CUS sites to N2 adsorbates, which enables the N≡N bond to be more feasible fo...read more
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Journal ArticleDOI
Defect engineering in photocatalytic materials
TL;DR: In this paper, the state-of-the-art progress on defect-engineered photocatalytic materials is reviewed and the future opportunities and challenges regarding defect engineering in photocatalysis are highlighted.
Journal ArticleDOI
Atomically Dispersed Molybdenum Catalysts for Efficient Ambient Nitrogen Fixation
Lili Han,Lili Han,Xijun Liu,Jinping Chen,Ruoqian Lin,Haoxuan Liu,Fang Lü,Seong-Min Bak,Zhixiu Liang,Shunzheng Zhao,Eli Stavitski,Jun Luo,Radoslav R. Adzic,Huolin L. Xin +13 more
TL;DR: Single Mo atoms anchored to nitrogen-doped porous carbon as a cost-effective catalyst for the NRR achieves a high NH3 yield rate and a high Faradaic efficiency, considerably higher compared to previously reported non-precious-metal electrocatalysts.
Journal ArticleDOI
Heterogeneous Single-Atom Photocatalysts: Fundamentals and Applications.
TL;DR: This review hopes that this review will provide some inspiration for the future discovery of the single-atom photocatalysts, manifestly stimulating the development in this emerging research area.
Journal ArticleDOI
Two-dimensional mosaic bismuth nanosheets for highly selective ambient electrocatalytic nitrogen reduction
TL;DR: In this article, a two-dimensional mosaic bismuth nanosheet (Bi NS) was fabricated via an in situ electrochemical reduction process and exhibited favorable average ammonia yield and Faradaic efficiency as high as 2.54 ± 0.45% at −0.8 V versus reversible hydrogen electrode in 0.1 M Na2SO4.
Journal ArticleDOI
A Critical Review on Energy Conversion and Environmental Remediation of Photocatalysts with Remodeling Crystal Lattice, Surface, and Interface
TL;DR: This review focused on advanced photocatalytic activity with simultaneous wastewater decontamination and energy conversion, and further enriched the mechanism by proposing the electron flow and substance conversion.
References
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