High-efficiency electroreduction of nitrite to ammonia on a Cu@TiO2 nanobelt array,Chemical Communications

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High-efficiency electroreduction of nitrite to ammonia on a Cu@TiO2 nanobelt array
Chemical Communications ( IF 4.3 ) Pub Date : 2023-01-16 , DOI: 10.1039/d2cc06261e
Ling Ouyang ₁ , Xiaoya Fan ₁ , Zerong Li ₁ , Xun He ₁ , Shengjun Sun ₂ , Zhengwei Cai ₂ , Yongsong Luo ₁ , Dongdong Zheng ₁ , Binwu Ying ₁ , Jing Zhang ₃ , Abdulmohsen Ali Alshehri ₄ , Yan Wang ₁ , Ke Ma ₅ , Xuping Sun _{1,

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Affiliation

Electrochemical nitrite (NO₂⁻) reduction is a potential and sustainable route to produce high-value ammonia (NH₃), but it requires highly active electrocatalysts. Herein, Cu nanoparticles anchored on a TiO₂ nanobelt array on a titanium plate (Cu@TiO₂/TP) are reported as a high-efficiency electrocatalyst for NO₂⁻-to-NH₃ conversion. The designed Cu@TiO₂/TP catalyst exhibits outstanding catalytic performance toward the NO₂⁻RR, with a high NH₃ yield of 760.5 μmol h⁻¹ cm⁻² (237.7 μmol h⁻¹ mg_cat.⁻¹) and an excellent faradaic efficiency of 95.3% in neutral solution. Meanwhile, it also presents strong electrochemical stability during cyclic tests and long-term electrolysis.

中文翻译：

在 Cu@TiO2 纳米带阵列上将亚硝酸盐高效电还原为氨

电化学亚硝酸盐 (NO ₂^- ) 还原是生产高价值氨 (NH ₃ ) 的潜在且可持续的途径，但它需要高活性的电催化剂。在此，锚定在钛板上的 TiO _{2纳米带阵列上的 Cu 纳米颗粒 (Cu@TiO}_{2 /TP) 被报道为用于 NO}₂^-至 NH ₃转化的高效电催化剂。设计的 Cu@TiO ₂ /TP 催化剂对 NO ₂⁻ RR 表现出出色的催化性能，NH ₃产率高达 760.5 μmol h ⁻¹ cm ⁻² (237.7 μmol h ⁻¹ mg_猫。⁻¹ ) 和在中性溶液中 95.3% 的出色法拉第效率。同时，它在循环测试和长期电解过程中也表现出很强的电化学稳定性。

更新日期：2023-01-20

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