Strain of BN Induced by Graphene Oxide to Enhance Electrocatalytic Nitrogen Reduction

IF 2.5 4区工程技术 Q3 ENGINEERING, ELECTRICAL & ELECTRONIC

Journal of Electronic Materials Pub Date : 2025-09-15 DOI:10.1007/s11664-025-12355-y

Linwei Guo, Meng Zhang, Haoyu Li, Shuaishuai Bai, Chunxia Yu, Yuangang Li, Lihua Shen

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引用次数: 0

Abstract

Ammonia (NH₃) is primarily produced through the traditional Haber–Bosch (H–B) technology which features high energy consumption and high pollution. As a sustainable alternative, electrocatalytic nitrogen reduction (eNRR) has attracted significant attention for its potential to replace the H–B process under ambient conditions. The key challenge lies in developing efficient catalysts to achieve high Faradaic efficiency (FE) for eNRR at normal temperature and pressure. Here, a metal-free composite catalyst composed of hexagonal boron nitride nanosheets (h-BNNs) and graphene oxide (GO) (h-BNNs/GO) was designed for ambient eNRR. A weak strain effect was induced between the layered structure of GO and h-BNNs, which contributed to an enhanced NH₃ yield rate of 25.0 μg h⁻¹ mg_cat.⁻¹) at −0.7 V versus reversible hydrogen electrode (RHE) in neutral media. Notably, the composite catalyst exhibited a remarkable 52.6% FE, a significant improvement over pure h-BNNs (4.7% FE). Furthermore, the morphology of the carbon support (e.g., GO vs. CNTs) was found to influence the strain effect, directly impacting the eNRR performance. This work provides valuable insights for strain-engineered catalyst design, advancing the development of sustainable nitrogen fixation technologies.

Graphical Abstract

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氧化石墨烯诱导BN应变增强电催化氮还原

氨（NH3）主要通过传统的Haber-Bosch （H-B）技术生产，该技术具有高能耗和高污染的特点。作为一种可持续的替代方法，电催化氮还原（eNRR）因其在环境条件下取代H-B工艺的潜力而备受关注。关键的挑战在于开发高效的催化剂，在常温常压下实现eNRR的高法拉第效率（FE）。本文设计了一种由六方氮化硼纳米片（h-BNNs）和氧化石墨烯（h-BNNs/GO）组成的无金属复合催化剂，用于环境eNRR。氧化石墨烯层状结构与h- bnns之间存在弱应变效应，NH3产率提高到25.0 μg h−1 mgcat。−1)在−0.7 V下与中性介质中可逆氢电极（RHE）的对比。值得注意的是，复合催化剂具有52.6%的FE，比纯h-BNNs （4.7% FE）有显著提高。此外，碳载体的形态（例如，GO与CNTs）会影响应变效应，直接影响eNRR的性能。这项工作为菌株工程催化剂的设计提供了有价值的见解，促进了可持续固氮技术的发展。图形抽象

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Journal of Electronic Materials 工程技术-材料科学：综合

CiteScore

4.10

自引率

4.80%

发文量

693

审稿时长

3.8 months

期刊介绍： The Journal of Electronic Materials (JEM) reports monthly on the science and technology of electronic materials, while examining new applications for semiconductors, magnetic alloys, dielectrics, nanoscale materials, and photonic materials. The journal welcomes articles on methods for preparing and evaluating the chemical, physical, electronic, and optical properties of these materials. Specific areas of interest are materials for state-of-the-art transistors, nanotechnology, electronic packaging, detectors, emitters, metallization, superconductivity, and energy applications. Review papers on current topics enable individuals in the field of electronics to keep abreast of activities in areas peripheral to their own. JEM also selects papers from conferences such as the Electronic Materials Conference, the U.S. Workshop on the Physics and Chemistry of II-VI Materials, and the International Conference on Thermoelectrics. It benefits both specialists and non-specialists in the electronic materials field. A journal of The Minerals, Metals & Materials Society.