A mesoporous Au film with surface sulfur modification for efficient ammonia electrosynthesis. Issue 39 (2nd October 2020)

• Record Type: Journal Article
• Authors: Zhang, Mei; Wang, Ziqiang; Yu, Hongjie; Wang, Shengqi; Xu, You; Li, Xiaonian; Wang, Liang; Wang, Hongjing
• Is Part Of: Journal of materials chemistry. Volume 8:Issue 39(2020)
• Page Start: 20414
• Page End: 20419
• Publication Date: 2020-10-02
• Subjects: Materials -- Research -- Periodicals; Chemistry, Analytic -- Periodicals; Environmental sciences -- Research -- Periodicals; 543.0284
• DOI: 10.1039/d0ta07305a
• Languages: English
• ISSNs: 2050-7488

Abstract

Abstract : We report a two-step strategy for synthesizing a sulfur-decorated mesoporous film on Ni foam towards an efficient electrosynthesis of ammonia. Abstract : Electrocatalytic reduction of N2 is a promising alternative technology for the green and sustainable production of NH3 . The development of this process is highly dependent on the identification of active electrocatalysts. Herein, a self-supported mesoporous Au-based film with sulfur decoration on Ni foam (S-mAu film/NF) has been synthesized by a micelle assembly replacement route. The obtained S-mAu film/NF exhibits superior electrochemical performance for nitrogen reduction reaction (NRR), resulting in a high NH3 yield (22.7 μg h −1 mgcat. −1 ) and Faraday efficiency (17.2%) under neutral conditions. This work offers a facile strategy for the synthesis of a self-supported mesoporous architecture with surface sulfur modification, which is favourable to the improvement of the electrocatalytic NRR performance.