Carbon-doped tin disulfide nanoflowers: a heteroatomic doping strategy for improving the electrocatalytic performance of nitrogen reduction to ammonia,New Journal of Chemistry

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Carbon-doped tin disulfide nanoflowers: a heteroatomic doping strategy for improving the electrocatalytic performance of nitrogen reduction to ammonia
New Journal of Chemistry ( IF 2.7 ) Pub Date : 2022-08-30 , DOI: 10.1039/d2nj02478k
Jingyi Xu ₁ , Xiaolong Xu ₁ , Yu Du ₂ , Dan Wu _{1,

2} , Hongmin Ma _{1,

2} , Xiang Ren _{1,

2} , Yuyang Li ₁ , Qin Wei _{1,

2}

Affiliation

As a new method of ammonia (NH₃) synthesis, the electrocatalytic nitrogen reduction reaction (eNRR) has generated widespread attention. The tin-based catalysts represent a broad development prospect in the field of electrocatalysis, but their eNRR performances need to be improved. In this work, hydrophobic carbon-doped tin disulfide (C-SnS₂) was fabricated for the first time and adopted as an advanced catalyst for the eNRR. The doped C may adsorb more N₂ and significantly improve the conductivity, which will contribute synergistically to the performance of the eNRR. The C-SnS₂ nanoflower catalyst achieved a satisfactory NH₃ yield rate (62.3 μg h⁻¹ mg⁻¹_cat.) and high Faraday efficiency (23.06%) at −0.2 V vs. RHE in acidic conditions (0.1 M HCl). This work may provide new methods for the further development of high activity eNRR catalysis.

中文翻译：

碳掺杂二硫化锡纳米花：提高氮还原成氨电催化性能的杂原子掺杂策略

电催化氮还原反应（eNRR）作为一种合成氨（NH _{3 ）的新方法引起了广泛关注。}锡基催化剂在电催化领域具有广阔的发展前景，但其eNRR性能有待提高。在这项工作中，首次制造了疏水性碳掺杂二硫化锡（C-SnS _{2 ），并将其用作eNRR的先进催化剂。}掺杂的C可以吸附更多的N ₂并显着提高电导率，这将对eNRR的性能产生协同作用。C-SnS ₂纳米花催化剂获得了令人满意的NH ₃产率（62.3 μg h ^-1 mg ^-1_cat.）和在酸性条件（0.1 M HCl）下-0.2 V与RHE 的高法拉第效率（23.06% ）。这项工作可能为进一步开发高活性eNRR催化提供新的方法。

更新日期：2022-08-30

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