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Heterostructured Bi2S3/MoS2 Nanoarrays for Efficient Electrocatalytic Nitrate Reduction to Ammonia Under Ambient Conditions
ACS Applied Materials & Interfaces ( IF 8.3 ) Pub Date : 2022-08-23 , DOI: 10.1021/acsami.2c10323 Xuejing Liu 1 , Xiaolong Xu 1 , Faying Li 1 , Jingyi Xu 1 , Hongmin Ma 1 , Xu Sun 1 , Dan Wu 1 , Changwen Zhang 2 , Xiang Ren 1 , Qin Wei 1
ACS Applied Materials & Interfaces ( IF 8.3 ) Pub Date : 2022-08-23 , DOI: 10.1021/acsami.2c10323 Xuejing Liu 1 , Xiaolong Xu 1 , Faying Li 1 , Jingyi Xu 1 , Hongmin Ma 1 , Xu Sun 1 , Dan Wu 1 , Changwen Zhang 2 , Xiang Ren 1 , Qin Wei 1
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Developing efficient electrocatalysts to realize the nitrate reduction reaction (eNO3–RR) for ammonia synthesis as an alternative to the traditional Haber–Bosch production process is of great significance. Herein, the heterostructured Bi2S3/MoS2 nanoarrays were successfully synthesized by Bi2S3 nanowires anchored on MoS2 nanosheets. Owing to the interfacial coupling effect, both particular surface area and exposure active sites increase. Density functional theory further uncovered that the excellent activity originates from charge transfer of the interface and a low potential barrier of 0.58 eV for hydrogenation of *NO to *NOH on Bi2S3/MoS2. Compared with pure Bi2S3 and MoS2 catalysts, the heterostructured Bi2S3/MoS2 nanoarrays exhibit a superior NH3 yield of 15.04 × 10–2 mmol·h–1·cm–2 and a Faraday efficiency of 88.4% at −0.8 V versus the reversible hydrogen electrode. This work provides a new avenue to explore advanced electrocatalysts, which is expected to shorten the distance from the practical application of the eNO3–RR technology.
中文翻译：
异质结构 Bi2S3/MoS2 纳米阵列在环境条件下高效电催化硝酸盐还原为氨
开发高效的电催化剂以实现用于氨合成的硝酸盐还原反应（eNO 3 - RR），以替代传统的 Haber-Bosch 生产工艺具有重要意义。在此，通过锚定在MoS 2纳米片上的Bi 2 S 3纳米线成功地合成了异质结构的Bi 2 S 3 /MoS 2纳米阵列。由于界面耦合效应，特定表面积和暴露活性位点都增加了。密度泛函理论进一步揭示了优异的活性源于界面的电荷转移和0.58 eV的低势垒将*NO氢化成*NOH在Bi上2 S 3 /MoS 2。与纯Bi 2 S 3和MoS 2催化剂相比，异质结构Bi 2 S 3 /MoS 2纳米阵列表现出15.04 × 10 -2 mmol·h -1 ·cm -2的优异NH 3产率和88.4%的法拉第效率。 -0.8 V 与可逆氢电极相比。该工作为探索先进电催化剂提供了新途径，有望缩短eNO 3 - RR技术与实际应用的距离。
更新日期：2022-08-23
中文翻译：
异质结构 Bi2S3/MoS2 纳米阵列在环境条件下高效电催化硝酸盐还原为氨
开发高效的电催化剂以实现用于氨合成的硝酸盐还原反应（eNO 3 - RR），以替代传统的 Haber-Bosch 生产工艺具有重要意义。在此，通过锚定在MoS 2纳米片上的Bi 2 S 3纳米线成功地合成了异质结构的Bi 2 S 3 /MoS 2纳米阵列。由于界面耦合效应，特定表面积和暴露活性位点都增加了。密度泛函理论进一步揭示了优异的活性源于界面的电荷转移和0.58 eV的低势垒将*NO氢化成*NOH在Bi上2 S 3 /MoS 2。与纯Bi 2 S 3和MoS 2催化剂相比，异质结构Bi 2 S 3 /MoS 2纳米阵列表现出15.04 × 10 -2 mmol·h -1 ·cm -2的优异NH 3产率和88.4%的法拉第效率。 -0.8 V 与可逆氢电极相比。该工作为探索先进电催化剂提供了新途径，有望缩短eNO 3 - RR技术与实际应用的距离。
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