| Autor: |
Su, Jenn Fang1,2,3 (AUTHOR), Ahmad, Muhammad Sheraz4 (AUTHOR), Kuan, Wei-Fan1,2,3,5 (AUTHOR) weifankuan@mail.cgu.edu.tw, Chen, Ching-Lung1,3,4,6 (AUTHOR) tommy@mail.mcut.edu.tw, Rasheed, Tahir1,7 (AUTHOR) tahir.rasheed@kfupm.edu.sa |
| Předmět: |
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| Zdroj: |
Chemosphere. Feb2024, Vol. 350, pN.PAG-N.PAG. 1p. |
| Abstrakt: |
Nitrate is recognized as a highly impactful water contaminant among various pollutants in water. To address the ever-growing demand for water purification, this work investigates the bimetallic palladium (Pd) and tin (Sn) catalysts, which are electrochemically deposited on stainless steel mesh support (Pd–Sn/SS) for the selective conversion of harmful nitrate (NO 3 −) into benign nitrogen (N 2) gas. Results indicate that the bimetallic composition in Pd–Sn/SS electrodes substantially influenced the reaction route for nitrate reduction as well as the performance of nitrate transformation and nitrogen selectivity. It is found that the electrode prepared from Pd:Sn = 1:1 (mole ratio) demonstrates an outstanding nitrate conversion of 95%, nitrogen selectivity of 88%, and nitrogen yield of 82%, which outperform many reported values in the literature. The electrochemically synthesized bimetallic electrode proposed herein enables a new insight for promoting the reactivity and selectivity of nitrate reduction in water. [Display omitted] • Pd–Sn/SS electrodes in acid aqueous solution were fabricated. • Denitrification of wastewater to convert nitrate to nitrogen gas. • Excellent faradic efficiency of 87% over 210 s. • Highest nitrogen selectivity of as prepared electrode with great catalytic performance. [ABSTRACT FROM AUTHOR] |
| Databáze: |
GreenFILE |
| Externí odkaz: |
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Full Text from ScienceDirect