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Solar-Powered Gram-Scale Ammonia Production from Nitrate.
Gnanasekar, Paulraj; Peramaiah, Karthik; Zhang, Huafan; Alsayoud, Ibrahim G; Subbiah, Anand S; Babics, Maxime; Ng, Tien Khee; Gan, Qiaoqiang; De Wolf, Stefaan; Huang, Kuo-Wei; Ooi, Boon S.
Affiliation
  • Gnanasekar P; Photonics Laboratory, Computer, Electrical, and Mathematical Sciences and Engineering Division, King Abdullah University of Science and Technology (KAUST), Thuwal, 23955-6900, Saudi Arabia.
  • Peramaiah K; KAUST Catalysis Center, Division of Physical Science and Engineering, King Abdullah University of Science and Technology (KAUST), Thuwal, 23955-6900, Saudi Arabia.
  • Zhang H; Department of Physical Science and Engineering, King Abdullah University of Science and Technology (KAUST), Thuwal, 23955-6900, Saudi Arabia.
  • Alsayoud IG; Photonics Laboratory, Computer, Electrical, and Mathematical Sciences and Engineering Division, King Abdullah University of Science and Technology (KAUST), Thuwal, 23955-6900, Saudi Arabia.
  • Subbiah AS; Photonics Laboratory, Computer, Electrical, and Mathematical Sciences and Engineering Division, King Abdullah University of Science and Technology (KAUST), Thuwal, 23955-6900, Saudi Arabia.
  • Babics M; KAUST Photovoltaics Laboratory, KAUST Solar Center, Department of Physical Science and Engineering, King Abdullah University of Science and Technology (KAUST), Thuwal, 23955-6900, Saudi Arabia.
  • Ng TK; KAUST Photovoltaics Laboratory, KAUST Solar Center, Department of Physical Science and Engineering, King Abdullah University of Science and Technology (KAUST), Thuwal, 23955-6900, Saudi Arabia.
  • Gan Q; Photonics Laboratory, Computer, Electrical, and Mathematical Sciences and Engineering Division, King Abdullah University of Science and Technology (KAUST), Thuwal, 23955-6900, Saudi Arabia.
  • De Wolf S; Department of Physical Science and Engineering, King Abdullah University of Science and Technology (KAUST), Thuwal, 23955-6900, Saudi Arabia.
  • Huang KW; KAUST Photovoltaics Laboratory, KAUST Solar Center, Department of Physical Science and Engineering, King Abdullah University of Science and Technology (KAUST), Thuwal, 23955-6900, Saudi Arabia.
  • Ooi BS; KAUST Catalysis Center, Division of Physical Science and Engineering, King Abdullah University of Science and Technology (KAUST), Thuwal, 23955-6900, Saudi Arabia.
Small ; : e2404249, 2024 Jul 02.
Article de En | MEDLINE | ID: mdl-38953366
ABSTRACT
The photoelectrochemical (PEC) method has the potential to be an attractive route for converting and storing solar energy as chemical bonds. In this study, a maximum NH3 production yield of 1.01 g L-1 with a solar-to-ammonia conversion efficiency of 8.17% through the photovoltaic electrocatalytic (PV-EC) nitrate (NO3 -) reduction reaction (NO3 -RR) is achieved, using silicon heterojunction solar cell technology. Additionally, the effect of tuning the operation potential of the PV-EC system and its influence on product selectivity are systematically investigated. By using this unique external resistance tuning approach in the PV-EC system, ammonia production through nitrate reduction performance from 96 to 360 mg L-1 is enhanced, a four-fold increase. Furthermore, the NH3 is extracted as NH4Cl powder using acid stripping, which is essential for storing chemical energy. This work demonstrates the possibility of tuning product selectivity in PV-EC systems, with prospects toward pilot scale on value-added product synthesis.
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Texte intégral: 1 Collection: 01-internacional Base de données: MEDLINE Langue: En Journal: Small Sujet du journal: ENGENHARIA BIOMEDICA Année: 2024 Type de document: Article Pays d'affiliation: Arabie saoudite
Texte intégral
Ajouter à My VHL
Imprimer
XML
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Texte intégral: 1 Collection: 01-internacional Base de données: MEDLINE Langue: En Journal: Small Sujet du journal: ENGENHARIA BIOMEDICA Année: 2024 Type de document: Article Pays d'affiliation: Arabie saoudite