Construction of dual Z-scheme heterostructure TCN/In2O3/ZnO composite with oxygen vacancies for enhanced artificial nitrogen fixation

IF 4.3 3区材料科学 Q2 MATERIALS SCIENCE, COATINGS & FILMS

Diamond and Related Materials Pub Date : 2024-11-25 DOI:10.1016/j.diamond.2024.111814

Ting Sun , Yuqing He , Jian Liu , Ping Gao , Zhiren Wu , Jun Liu , Xinshan Rong

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Abstract

The synergistic effect between vacancy engineering and heterostructures can effectively improve the interfacial charge transfer ability and efficiency of catalytic nitrogen reduction. Herein, a ternary dual Z-scheme tubular carbon nitride composited oxygen vacancy-induced indium oxide and oxygen vacancy-induced zinc oxide catalyst (TCN/Vo-In₂O₃/Vo-ZnO) was constructed, and the synergistic mechanism of charge transport at the catalyst interface was explored. The excellent efficiency of nitrogen fixation could reach 171.56 μmol/L within 120 min, and the high stability of TCN/Vo-In₂O₃/Vo-ZnO was favorable for practical applications. All experiments indicated that the dual-Z scheme heterostructure and oxygen vacancies have a synergistic effect. Oxygen vacancies could control the valence band position. This control improved the transfer rate of photogenerated charge carriers between heterojunctions, thereby enhancing the adsorption and activation of N₂. This study may offer new insights into the synthesis of highly efficient catalysts for photocatalytic nitrogen fixation.

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构建具有氧空位的双 Z 型异质结构 TCN/In2O3/ZnO 复合材料以增强人工固氮作用

空位工程与异质结构之间的协同效应可有效提高界面电荷转移能力和催化氮还原的效率。本文构建了氧空位诱导氧化铟和氧空位诱导氧化锌的三元双 Z 型管状氮化碳催化剂（TCN/Vo-In2O3/Vo-ZnO），并探讨了催化剂界面电荷传输的协同机制。在 120 分钟内，固氮效率可达 171.56 μmol/L，而且 TCN/Vo-In2O3/Vo-ZnO 具有高稳定性，有利于实际应用。所有实验都表明，双 Z 方案异质结构和氧空位具有协同效应。氧空位可以控制价带位置。这种控制提高了异质结之间光生电荷载流子的转移率，从而增强了对 N2 的吸附和活化。这项研究为合成光催化固氮的高效催化剂提供了新的思路。

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来源期刊

Diamond and Related Materials 工程技术-材料科学：综合

CiteScore

6.00

自引率

14.60%

发文量

702

审稿时长

2.1 months

期刊介绍： DRM is a leading international journal that publishes new fundamental and applied research on all forms of diamond, the integration of diamond with other advanced materials and development of technologies exploiting diamond. The synthesis, characterization and processing of single crystal diamond, polycrystalline films, nanodiamond powders and heterostructures with other advanced materials are encouraged topics for technical and review articles. In addition to diamond, the journal publishes manuscripts on the synthesis, characterization and application of other related materials including diamond-like carbons, carbon nanotubes, graphene, and boron and carbon nitrides. Articles are sought on the chemical functionalization of diamond and related materials as well as their use in electrochemistry, energy storage and conversion, chemical and biological sensing, imaging, thermal management, photonic and quantum applications, electron emission and electronic devices. The International Conference on Diamond and Carbon Materials has evolved into the largest and most well attended forum in the field of diamond, providing a forum to showcase the latest results in the science and technology of diamond and other carbon materials such as carbon nanotubes, graphene, and diamond-like carbon. Run annually in association with Diamond and Related Materials the conference provides junior and established researchers the opportunity to exchange the latest results ranging from fundamental physical and chemical concepts to applied research focusing on the next generation carbon-based devices.