期刊
ACS APPLIED ENERGY MATERIALS
卷 4, 期 2, 页码 1868-1875出版社
AMER CHEMICAL SOC
DOI: 10.1021/acsaem.0c02964
关键词
carbon nitride; photocatalysis; doping; crystal design; hydrogen evolution; alkali metals doped carbon nitride
资金
- European Research Council (ERC) under the European Union [849068]
- Israel Science Foundation (ISF) [1161/17]
- ISF-NSFC [2969/19]
- Negev HPC project
- Pazy Foundation [119-2020]
- European Research Council (ERC) [849068] Funding Source: European Research Council (ERC)
This study reports a method for one-pot synthesis of alkali-containing CN macrostructures with ionic crystals on its surface, leading to enhanced H-2 evolution performance. DFT calculations were used to evaluate the most stable configuration of alkaline metals in the CN lattice. This work provides an approach for the rational design of CN and other metal-free materials with controllable properties for energy-related applications.
Tailored design of hybrid carbon nitride (CN) materials is quite challenging because of the drawbacks of the solid-state reaction, and the utilization of single crystals containing C-N monomers as reactants for the high-temperature reaction has been proven to imprint a given chemical composition, morphology, or electronic structure. We report the one-pot synthesis of alkali-containing CN macrostructures with ionic crystals on its surface by utilizing a tailored melamine-hydrochloride-based molecular single crystal containing NaCl and KCl as reactants. Structural and optical investigations reveal that upon calcination, molecular doping with Na+ and K+ is achieved, and additionally, the ionic species remain on the surface of the materials, resulting in an enhanced H-2 evolution performance through water splitting owing to a high ionic strength of the reaction media. Additionally, the most stable configuration of the alkaline metals in the CN lattice is evaluated by DFT calculations. This work provides an approach for the rational design of CN and other related metal-free materials with controllable properties for energy-related applications and devices.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据