Details

Autor(en) / Beteiligte

• He, Xun
• Li, Zixiao
• Yao, Jie
• Dong, Kai
• Li, Xiuhong
• Hu, Long
• Sun, Shengjun
• Cai, Zhengwei
• Zheng, Dongdong
• Luo, Yongsong
• Ying, Binwu
• Hamdy, Mohamed S.
• Xie, Lisi
• Liu, Qian
• Sun, Xuping

Titel

High-efficiency electrocatalytic nitrite reduction toward ammonia synthesis on CoP@TiO2 nanoribbon array

Ist Teil von

• iScience, 2023-07, Vol.26 (7), p.107100-107100, Article 107100

Ort / Verlag

Elsevier Inc

Erscheinungsjahr

2023

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• Electrochemical reduction of nitrite (NO2−) can satisfy the necessity for NO2− contaminant removal and deliver a sustainable pathway for ammonia (NH3) generation. Its practical application yet requires highly efficient electrocatalysts to boost NH3 yield and Faradaic efficiency (FE). In this study, CoP nanoparticle-decorated TiO2 nanoribbon array on Ti plate (CoP@TiO2/TP) is verified as a high-efficiency electrocatalyst for the selective reduction of NO2− to NH3. When measured in 0.1 M NaOH with NO2−, the freestanding CoP@TiO2/TP electrode delivers a large NH3 yield of 849.57 μmol h−1 cm−2 and a high FE of 97.01% with good stability. Remarkably, the subsequently fabricated Zn–NO2− battery achieves a high power density of 1.24 mW cm−2 while delivering a NH3 yield of 714.40 μg h−1 cm−2. [Display omitted] •CoP@TiO2/TP acts as a superb NO2−RR electrocatalyst for NH3 synthesis•It achieves a NH3 yield of 849.57 μmol h−1 cm−2 and a Faradaic efficiency of 97.01%•It shows good stability for 12 h of bulk electrolysis and recycling tests•The fabricated Zn–NO2− battery achieves a NH3 yield of 714.40 μg h−1 cm−2 Electrochemistry; Materials chemistry