Research on the Selective Electrocatalytic Reduction of SO<sub>2</sub> to Recover S<sup>0</sup> by Pb Electrode
Resource utilization of SO<sub>2</sub> from flue gas is a key challenge for the green development of the smelting industry. Recovery of sulfur resources in the form of elemental sulfur (S<sup>0</sup>), which has a high market demand and is a current focus in the field of SO&l...
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| Format: | Article |
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MDPI AG
2023-03-01
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| Series: | Metals |
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| Online Access: | https://www.mdpi.com/2075-4701/13/3/569 |
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| author | Xudong Liu Xiaoyang Wang Jiaqi Long Xiaofeng Xie Lin Wu Zhujiang Wang Yingxue Fu Hao Chen Kaisong Xiang Hui Liu |
| author_facet | Xudong Liu Xiaoyang Wang Jiaqi Long Xiaofeng Xie Lin Wu Zhujiang Wang Yingxue Fu Hao Chen Kaisong Xiang Hui Liu |
| author_sort | Xudong Liu |
| collection | DOAJ |
| description | Resource utilization of SO<sub>2</sub> from flue gas is a key challenge for the green development of the smelting industry. Recovery of sulfur resources in the form of elemental sulfur (S<sup>0</sup>), which has a high market demand and is a current focus in the field of SO<sub>2</sub> treatment, can reduce the solid waste from desulfurization. In this study, it was found that Pb as a cathode material had good catalytic activity for the electrochemical reduction of SO<sub>2</sub> and good selectivity towards elemental sulfur. However, the cathode suffers from sulfur poisoning. The problem was resolved by introducing surfactant, specifically sodium dodecyl benzene sulfonate (SDBS), which significantly lowered the sulfur content ratio on the surface of the electrode from 31.82% to 2.17%. Through the optimization of electrocatalytic parameters, this method enables efficient conversion of SO<sub>2</sub> to S<sup>0</sup>, achieving a selectivity of 83% at pH = 0.25 and E = −0.8 <i>V (vs. SCE)</i>. |
| first_indexed | 2024-03-11T06:10:13Z |
| format | Article |
| id | doaj.art-634f772de82e406ba6e8bc743cee1255 |
| institution | Directory Open Access Journal |
| issn | 2075-4701 |
| language | English |
| last_indexed | 2024-03-11T06:10:13Z |
| publishDate | 2023-03-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Metals |
| spelling | doaj.art-634f772de82e406ba6e8bc743cee12552023-11-17T12:39:35ZengMDPI AGMetals2075-47012023-03-0113356910.3390/met13030569Research on the Selective Electrocatalytic Reduction of SO<sub>2</sub> to Recover S<sup>0</sup> by Pb ElectrodeXudong Liu0Xiaoyang Wang1Jiaqi Long2Xiaofeng Xie3Lin Wu4Zhujiang Wang5Yingxue Fu6Hao Chen7Kaisong Xiang8Hui Liu9School of Metallurgy and Environment, Central South University, Changsha 410083, ChinaSchool of Metallurgy and Environment, Central South University, Changsha 410083, ChinaSchool of Metallurgy and Environment, Central South University, Changsha 410083, ChinaSchool of Metallurgy and Environment, Central South University, Changsha 410083, ChinaSchool of Metallurgy and Environment, Central South University, Changsha 410083, ChinaSchool of Metallurgy and Environment, Central South University, Changsha 410083, ChinaSchool of Metallurgy and Environment, Central South University, Changsha 410083, ChinaSchool of Metallurgy and Environment, Central South University, Changsha 410083, ChinaSchool of Metallurgy and Environment, Central South University, Changsha 410083, ChinaSchool of Metallurgy and Environment, Central South University, Changsha 410083, ChinaResource utilization of SO<sub>2</sub> from flue gas is a key challenge for the green development of the smelting industry. Recovery of sulfur resources in the form of elemental sulfur (S<sup>0</sup>), which has a high market demand and is a current focus in the field of SO<sub>2</sub> treatment, can reduce the solid waste from desulfurization. In this study, it was found that Pb as a cathode material had good catalytic activity for the electrochemical reduction of SO<sub>2</sub> and good selectivity towards elemental sulfur. However, the cathode suffers from sulfur poisoning. The problem was resolved by introducing surfactant, specifically sodium dodecyl benzene sulfonate (SDBS), which significantly lowered the sulfur content ratio on the surface of the electrode from 31.82% to 2.17%. Through the optimization of electrocatalytic parameters, this method enables efficient conversion of SO<sub>2</sub> to S<sup>0</sup>, achieving a selectivity of 83% at pH = 0.25 and E = −0.8 <i>V (vs. SCE)</i>.https://www.mdpi.com/2075-4701/13/3/569PbSO<sub>2</sub>S<sup>0</sup>surfactantsulfur adhesion |
| spellingShingle | Xudong Liu Xiaoyang Wang Jiaqi Long Xiaofeng Xie Lin Wu Zhujiang Wang Yingxue Fu Hao Chen Kaisong Xiang Hui Liu Research on the Selective Electrocatalytic Reduction of SO<sub>2</sub> to Recover S<sup>0</sup> by Pb Electrode Metals Pb SO<sub>2</sub> S<sup>0</sup> surfactant sulfur adhesion |
| title | Research on the Selective Electrocatalytic Reduction of SO<sub>2</sub> to Recover S<sup>0</sup> by Pb Electrode |
| title_full | Research on the Selective Electrocatalytic Reduction of SO<sub>2</sub> to Recover S<sup>0</sup> by Pb Electrode |
| title_fullStr | Research on the Selective Electrocatalytic Reduction of SO<sub>2</sub> to Recover S<sup>0</sup> by Pb Electrode |
| title_full_unstemmed | Research on the Selective Electrocatalytic Reduction of SO<sub>2</sub> to Recover S<sup>0</sup> by Pb Electrode |
| title_short | Research on the Selective Electrocatalytic Reduction of SO<sub>2</sub> to Recover S<sup>0</sup> by Pb Electrode |
| title_sort | research on the selective electrocatalytic reduction of so sub 2 sub to recover s sup 0 sup by pb electrode |
| topic | Pb SO<sub>2</sub> S<sup>0</sup> surfactant sulfur adhesion |
| url | https://www.mdpi.com/2075-4701/13/3/569 |
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