Journal ArticleDOI
Carbon-Nanoplated CoS@TiO 2 Nanofibrous Membrane: An Interface-Engineered Heterojunction for High-Efficiency Electrocatalytic Nitrogen Reduction
Reads0
Chats0
TLDR
An interface-engineered heterojunction, composed of CoS nanosheets anchored on a TiO2 nanofibrous membrane, is developed, which achieves strikingly high ammonia yield and Faradaic efficiency, as well as superior long-term durability.Abstract:
Developing noble-metal-free electrocatalysts is important to industrially viable ammonia synthesis through the nitrogen reduction reaction (NRR). However, the present transition-metal electrocatalysts still suffer from low activity and Faradaic efficiency due to poor interfacial reaction kinetics. Herein, an interface-engineered heterojunction, composed of CoS nanosheets anchored on a TiO2 nanofibrous membrane, is developed. The TiO2 nanofibrous membrane can uniformly confine the CoS nanosheets against agglomeration, and contribute substantially to the NRR performance. The intimate coupling between CoS and TiO2 enables easy charge transfer, resulting in fast reaction kinetics at the heterointerface. The conductivity and structural integrity of the heterojunction are further enhanced by carbon nanoplating. The resulting C@CoS@TiO2 electrocatalyst achieves a high ammonia yield (8.09×10-10 mol s-1 cm-2 ) and Faradaic efficiency (28.6 %), as well as long-term durability.read more
Citations
More filters
Journal ArticleDOI
Identifying the Origin of Ti3+ Activity toward Enhanced Electrocatalytic N2 Reduction over TiO2 Nanoparticles Modulated by Mixed-Valent Copper.
Tongwei Wu,Haitao Zhao,Xiaojuan Zhu,Zhe Xing,Qian Liu,Tong Liu,Shuyan Gao,Siyu Lu,Guang Chen,Abdullah M. Asiri,Yanning Zhang,Xuping Sun +11 more
TL;DR: It is demonstrated that mixed-valent Cu acts as an effective dopant to modulate the oxygen vacancy (VO ) concentration and Ti3+ formation, which markedly improves the electrocatalytic NRR performance.
Journal ArticleDOI
Direct Electrochemical Ammonia Synthesis from Nitric Oxide.
Jun Long,Jun Long,Jun Long,Shiming Chen,Yunlong Zhang,Chenxi Guo,Xiaoyan Fu,Xiaoyan Fu,Xiaoyan Fu,Dehui Deng,Jianping Xiao +10 more
TL;DR: This work provides an alternative strategy to EAS from exhausted NO, coupled with NO removal via electrocatalysis, and reveals NH 3 is the most preferred product relative to H 2 , N 2 O and N 2 on Cu.
Journal ArticleDOI
Strategies to suppress hydrogen evolution for highly selective electrocatalytic nitrogen reduction: challenges and perspectives
TL;DR: In this article, the authors systematically summarize the recent strategies to inhibit the competing hydrogen evolution reaction (HER), focusing on limiting the proton-and electron-transfer kinetics, shifting the chemical equilibrium, and designing the electrocatalysts.
Journal ArticleDOI
Artificial Heterointerfaces Achieve Delicate Reaction Kinetics towards Hydrogen Evolution and Hydrazine Oxidation Catalysis
Qizhu Qian,Jihua Zhang,Jianming Li,Yapeng Li,Xu Jin,Yin Zhu,Yi Liu,Ziyun Li,Ahmed El-Harairy,Chong Xiao,Genqiang Zhang,Yi Xie +11 more
TL;DR: DFT calculations decipher that heterointerfaces simultaneously optimize the hydrogen adsorption free energy (∆GH*) and promote the hydrazine dehydrogenation kinetics, which provides a rationale for advanced bifunctional electrocatalysts, and propels the practical energy-saving H2 generation techniques.
Journal ArticleDOI
Comprehensive Understanding of the Thriving Ambient Electrochemical Nitrogen Reduction Reaction.
TL;DR: In this article, a comprehensive summary of the recent progress in the field of the electrochemical nitrogen reduction reaction and related catalysts is provided, including the operational procedures of the E-NRR, the acquisition of key metrics, the challenges faced, and the most suitable solutions.
References
More filters
Journal ArticleDOI
Electrochemical Reduction of N2 under Ambient Conditions for Artificial N2 Fixation and Renewable Energy Storage Using N2/NH3 Cycle
Di Bao,Di Bao,Qi Zhang,Fan-Lu Meng,Fan-Lu Meng,Hai-Xia Zhong,Miao-Miao Shi,Miao-Miao Shi,Yu Zhang,Jun-Min Yan,Qing Jiang,Xin-Bo Zhang +11 more
TL;DR: Using tetrahexahedral gold nanorods as a heterogeneous electrocatalyst, an electrocatalytic N2 reduction reaction was shown to be possible at room temperature and atmospheric pressure, with a high Faradic efficiency up to 4.02% at -0.2 V vs reversible hydrogen electrode.
Journal ArticleDOI
Challenges and prospects in the catalysis of electroreduction of nitrogen to ammonia
Bryan H. R. Suryanto,Hoang Long Du,Dabin Wang,Jun Chen,Alexandr N. Simonov,Douglas R. MacFarlane +5 more
TL;DR: The electrochemical reduction of nitrogen is being intensely investigated as the basis for future ammonia production from renewable energy sources as mentioned in this paper, and the issue of catalyst selectivity and the approaches to promote the electrochemical nitrogen reduction reaction (NRR) over H2 production are discussed.
Journal ArticleDOI
A rigorous electrochemical ammonia synthesis protocol with quantitative isotope measurements
Suzanne Zamany Andersen,Viktor Colic,Sungeun Yang,Sungeun Yang,Jay A. Schwalbe,Adam C. Nielander,Joshua M. McEnaney,Kasper Enemark-Rasmussen,Jon G. Baker,Aayush R. Singh,Brian A. Rohr,Michael J. Statt,Sarah J. Blair,Stefano Mezzavilla,Jakob Kibsgaard,Peter Christian Kjærgaard Vesborg,Matteo Cargnello,Stacey F. Bent,Thomas F. Jaramillo,Ifan E. L. Stephens,Jens K. Nørskov,Ib Chorkendorff +21 more
TL;DR: A protocol for the electrochemical reduction of nitrogen to ammonia enables isotope-sensitive quantification of the ammonia produced and the identification and removal of contaminants, and should help to prevent false positives from appearing in the literature.
Journal ArticleDOI
Spectrophotometric Method for Determination of Hydrazine
G. W. Watt,J. D. Chrisp +1 more
Journal ArticleDOI
Au Sub-Nanoclusters on TiO2 toward Highly Efficient and Selective Electrocatalyst for N2 Conversion to NH3 at Ambient Conditions.
TL;DR: It is demonstrated that by using Au sub-nanoclusters embedded on TiO2 (Au loading is 1.542 wt%), the electrocatalytic N2 reduction reaction (NRR) is indeed possible at ambient condition and with very high and stable production yield.