Please use this identifier to cite or link to this item: doi:10.22028/D291-39828
Volltext verfügbar? / Dokumentlieferung
Title: Grave-to-cradle upcycling of harmful algal biomass into atomically dispersed iron catalyst for efficient ammonia electrosynthesis from nitrate
Author(s): Wang, He
Man, Shuaishuai
Wang, Han
Presser, Volker
Yan, Qun
Zhang, Yong
Language: English
Title: Applied Catalysis B: Environmental
Volume: 332
Publisher/Platform: Elsevier
Year of Publication: 2023
Free key words: Electrochemical nitrate reduction
HABs resource utilization
Single-atom catalyst
Ammonia recovery
Biochar
DDC notations: 620 Engineering and machine engineering
Publikation type: Journal Article
Abstract: Electrochemically converting nitrate, widely distributed in industrial wastewater and contaminated water bodies, into ammonia is a promising route for resource recovery and wastewater treatment. Meanwhile, treating harmful algal blooms (HABs) is presented worldwide, are time and resource-consuming, and carries a high CO2 footprint. Rather than considering this carbon and nitrogen-rich biomass as disposable waste, consider it a vast renewable resource. Therefore, this study presents a Fe-dispersed carbon-based catalyst derived from HABs biomass, with a maximum ammonia yield rate of 16449 μg h−1 cm−2 (1.2 mmol h−1 mgcat−1) and NH3 Faradaic efficiency of 87.3%. This catalyst also possessed decent stability with continuous operation over 50 h. Experimental and theoretical calculation results reveal that the Fe-N4 site facilitates electrocatalytic nitrate reduction reaction by reducing the energy barriers of the NO3--to-NH3 pathway. Thus, this strategy of upcycling HABs biomass waste into functional catalysts offers a multipronged approach to renewable and carbon-neutral energy technologies.
DOI of the first publication: 10.1016/j.apcatb.2023.122778
URL of the first publication: https://doi.org/10.1016/j.apcatb.2023.122778
Link to this record: urn:nbn:de:bsz:291--ds-398288
hdl:20.500.11880/36087
http://dx.doi.org/10.22028/D291-39828
ISSN: 1873-3883
0926-3373
Date of registration: 10-Jul-2023
Faculty: NT - Naturwissenschaftlich- Technische Fakultät
Department: NT - Materialwissenschaft und Werkstofftechnik
Professorship: NT - Prof. Dr. Volker Presser
Collections:SciDok - Der Wissenschaftsserver der Universität des Saarlandes

Files for this record:
There are no files associated with this item.


Items in SciDok are protected by copyright, with all rights reserved, unless otherwise indicated.