Year: 2025
Type: article
Abstract: ABSTRACT The renewable-energy-driven conversion of nitrate in seawater into ammonia ions (NH4+) is a promising strategy for concurrent marine environmental remediation and sustainable chemical production. Herein, a seawater piezocatalytic nitrate reduction reaction (NitRR) is demonstrated for efficient NH4+ production by employing MnPS3 nanosheets (NSs) as a new type of piezocatalyst. It is shown that the Mn and P dual sites promote the adsorption and activation of NO3− ions via an asymmetric side-on mode. Moreover, the lattice strain of MnPS3 NSs induced by the external mechanical vibration further weakens the N–O bond. With the additional contribution of the active hydrogen supplied by the S sites, the MnPS3 NSs exhibit an NH4+ production rate of 2.75 mmol h−1 g−1 in simulated seawater without sacrificial agents. By utilizing the mechanical energy of water flow in real seawater, the continuous conversion of NO3− into NH4+ at a rate of 95.0% and with a selectivity of 96.4% is also achieved within 120 min. Our work paves the way for the sustainable conversion of nitrate in seawater into value-added chemicals via renewable natural energy.
Source: National Science Review
DOI: 10.1093/nsr/nwaf508
Authors: Zhijie Li, Chaoqi Zhang, Yamin Xi, Yingying Zou, Tong Bao, Yingxuan Zhou, Rong Deng, Chao Liu, Chengzhong Yu
Institutions: East China Normal University, The University of Queensland
Language: English
Subfield: Catalysis
Field: Chemical Engineering
Domain: Physical Sciences
Open Access status: gold
Estimated APC paid: $2,000
OpenAlex ID: W4416227920