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Wu S, Yan J, Zhao D, Cai Z, Yu J, Li R, Li Q, Fan G. Three-dimensional RuCo alloy nanosheets arrays integrated pinewood-derived porous carbon for high-efficiency electrocatalytic nitrate reduction to ammonia. J Colloid Interface Sci 2024; 668:264-271. [PMID: 38678882 DOI: 10.1016/j.jcis.2024.04.145] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2024] [Revised: 04/11/2024] [Accepted: 04/20/2024] [Indexed: 05/01/2024]
Abstract
Electricity-driven nitrate (NO3-) to ammonia (NH3) conversion presents a unique opportunity to simultaneously eliminate nitrate from sewage while capturing ammonia. However, the Faradaic efficiency and ammonia yield in this eight-electron process remain unsatisfactory, underscoring the critical need for more effective electrocatalysts. In this study, a RuCo alloy nanosheets electrodeposited on pinewood-derived three-dimensional porous carbon (RuCo@TDC) is introduced as a highly-efficient electrocatalyst for the nitrate reduction reaction. The RuCo@TDC catalyst exhibits superior electrocatalytic performance, achieving the highest NH3 yield of 2.02 ± 0.11 mmol h-1 cm-2 at -0.6 V versus the reversible hydrogen electrode (vs. RHE) and the highest Faradaic efficiency of 95.7 ± 0.8 % at -0.2 V vs. RHE in an electrolyte mixture of 0.1 M KOH and 0.1 M KNO3. Furthermore, the Zn-NO3- battery using RuCo@TDC as the cathode provides a maximum power density of 2.46 mW cm-2 and a satisfactory NH3 yield of 1110 μg h-1 cm-2.
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Affiliation(s)
- Song Wu
- College of Chemistry and Materials Science, Sichuan Normal University, Chengdu 610068, Sichuan, China
| | - Jingwen Yan
- College of Chemistry and Materials Science, Sichuan Normal University, Chengdu 610068, Sichuan, China
| | - Donglin Zhao
- College of Chemistry and Materials Science, Sichuan Normal University, Chengdu 610068, Sichuan, China
| | - Zhengwei Cai
- Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education, Ocean University of China, Qingdao, Shandong 266100, China.
| | - Jiali Yu
- College of Biomedical Engineering, Sichuan University, Chengdu, Sichuan 610065, China
| | - Ruizhi Li
- Department of Chemistry, University of Cincinnati, Cincinnati, OH 45221, USA
| | - Quan Li
- College of Chemistry and Materials Science, Sichuan Normal University, Chengdu 610068, Sichuan, China.
| | - Guangyin Fan
- College of Chemistry and Materials Science, Sichuan Normal University, Chengdu 610068, Sichuan, China.
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Hao Z, Hou W, Fang C, Huang Y, Liu X. Sulfite activation by cobaltosic oxide nanohydrangeas for tetracycline degradation: Performance, degradation pathways and mechanism. JOURNAL OF HAZARDOUS MATERIALS 2022; 439:129618. [PMID: 35870208 DOI: 10.1016/j.jhazmat.2022.129618] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/06/2022] [Revised: 07/13/2022] [Accepted: 07/14/2022] [Indexed: 06/15/2023]
Abstract
Sulfite has been used as a classic reductant for the dehalogenation and reduction of organic compounds for a long time, it is recently deemed as a promising alternative (for persulfate) to generate sulfate radical for wastewater treatment due to its low price and eco-toxicity. In contrast with the enormous work developed in the field of tetracycline (TC) degradation via PMS activization, sulfite activization could play a important role in TC degradation but there is only very few available reports in this area. Herein, the novel and efficient CoNHs nanocatalyst is designed and developed, via immobilization of hydrangea-shaped Co3O4 nanoparticles onto graphitic carbon nanosheet (GCN), for the degradation of tetracycline via sulfite activation. The detailed characterizations have confirmed that CoNHs possesses a nanohydrangea-shaped structure with high microporosity. The comparison with other supports (such as CeO2 and MoS2), CoNHs provides the highest degradation efficiency in TC degradation, due to the synergistic effect between Co3O4 and GCN. Free radical quenching experiments and EPR analysis confirm that SO4•- and O2•- are major reactive oxygen species in the CoNHs/sulfite system. This work could provide a simple, economical and durable cobalt-based catalyst for organic wastewater treatment via sulfite activation.
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Affiliation(s)
- Zixuan Hao
- Engineering Research Center of Eco-Environment in Three Gorges Reservoir Region of Ministry of Education, College of Materials and Chemical Engineering, China Three Gorges University, Yichang, Hubei 443002 , China
| | - Wenxin Hou
- Engineering Research Center of Eco-Environment in Three Gorges Reservoir Region of Ministry of Education, College of Materials and Chemical Engineering, China Three Gorges University, Yichang, Hubei 443002 , China
| | - Chen Fang
- Engineering Research Center of Eco-Environment in Three Gorges Reservoir Region of Ministry of Education, College of Materials and Chemical Engineering, China Three Gorges University, Yichang, Hubei 443002 , China
| | - Yingping Huang
- Engineering Research Center of Eco-Environment in Three Gorges Reservoir Region of Ministry of Education, College of Materials and Chemical Engineering, China Three Gorges University, Yichang, Hubei 443002 , China; College of Hydraulic & Environmental Engineering, China Three Gorges University, Yichang, Hubei 443002 , China.
| | - Xiang Liu
- Engineering Research Center of Eco-Environment in Three Gorges Reservoir Region of Ministry of Education, College of Materials and Chemical Engineering, China Three Gorges University, Yichang, Hubei 443002 , China; Hubei Three Gorges Laboratory, 443007 Yichang, Hubei, China.
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Yang L, Xu H, He G, Chen H. Recent advances in hollow nanomaterials with multiple dimensions for electrocatalytic water splitting. Dalton Trans 2022; 51:13559-13572. [PMID: 36018245 DOI: 10.1039/d2dt01757a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Electrocatalytic water splitting has great research prospects in the production of green hydrogen energy, and electrocatalysts are the prerequisite. As widely employed efficient electrocatalysts, hollow nanostructures have attracted a lot of research attention due to their excellent catalytic activity and structural stability. Moreover, the abundant catalytically active sites and tunable morphology also make hollow nanomaterials promising electrocatalysts for water splitting. Despite these advantages, the industrial applications of these hollow nanocatalysts are impeded by limitations like the lack of effective synthesis methods and unclear formation mechanisms. Therefore, extensive efforts have been devoted to the development of efficient synthesis strategies to boost the development of more efficient hollow electrocatalysts, and great progress has been achieved in recent years. To gain a better understanding of the rapid development of hollow nanocatalysts for water splitting, we herein organize a review to summarize the recent synthetic methods and advantages of hollow materials with different dimensions. The specific advantages of hollow nanomaterials in electrocatalytic water splitting, such as abundant active sites, a stable structure, high mass transfer efficiency, and reduced aggregation of catalytic particles, are also summarized. Finally, the challenges and prospects of hollow nanostructures with multiple dimensions in electrocatalytic water splitting are further explored.
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Affiliation(s)
- Lida Yang
- Key Laboratory of Advanced Catalytic Materials and Technology, Advanced Catalysis and Green Manufacturing Collaborative Innovation Center, Jiangsu Key Laboratory of Oil and Gas Storage & Transportation Technology, Changzhou University, Jiangsu, 213164, China.
| | - Hui Xu
- Key Laboratory of Advanced Catalytic Materials and Technology, Advanced Catalysis and Green Manufacturing Collaborative Innovation Center, Jiangsu Key Laboratory of Oil and Gas Storage & Transportation Technology, Changzhou University, Jiangsu, 213164, China.
| | - Guangyu He
- Key Laboratory of Advanced Catalytic Materials and Technology, Advanced Catalysis and Green Manufacturing Collaborative Innovation Center, Jiangsu Key Laboratory of Oil and Gas Storage & Transportation Technology, Changzhou University, Jiangsu, 213164, China.
| | - Haiqun Chen
- Key Laboratory of Advanced Catalytic Materials and Technology, Advanced Catalysis and Green Manufacturing Collaborative Innovation Center, Jiangsu Key Laboratory of Oil and Gas Storage & Transportation Technology, Changzhou University, Jiangsu, 213164, China.
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Jiang Y, Qin Y, Luo W, Liu H, Shen W, Jiang Y, Li M, He R. Highly Efficient Oxygen‐Modulated Ru‐Based HER Electrocatalyst in a Wide pH Range. ChemElectroChem 2022. [DOI: 10.1002/celc.202101580] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Affiliation(s)
- Yong Jiang
- Key Laboratory of Luminescence Analysis and Molecular Sensing (Southwest University) Ministry of Education, College of Chemistry and Chemical Engineering Southwest University Chongqing 400715 PR China
| | - Youcheng Qin
- Key Laboratory of Luminescence Analysis and Molecular Sensing (Southwest University) Ministry of Education, College of Chemistry and Chemical Engineering Southwest University Chongqing 400715 PR China
| | - Wei Luo
- Key Laboratory of Luminescence Analysis and Molecular Sensing (Southwest University) Ministry of Education, College of Chemistry and Chemical Engineering Southwest University Chongqing 400715 PR China
| | - Hao Liu
- Key Laboratory of Luminescence Analysis and Molecular Sensing (Southwest University) Ministry of Education, College of Chemistry and Chemical Engineering Southwest University Chongqing 400715 PR China
| | - Wei Shen
- Key Laboratory of Luminescence Analysis and Molecular Sensing (Southwest University) Ministry of Education, College of Chemistry and Chemical Engineering Southwest University Chongqing 400715 PR China
| | - Yimin Jiang
- Key Laboratory of Luminescence Analysis and Molecular Sensing (Southwest University) Ministry of Education, College of Chemistry and Chemical Engineering Southwest University Chongqing 400715 PR China
| | - Ming Li
- Key Laboratory of Luminescence Analysis and Molecular Sensing (Southwest University) Ministry of Education, College of Chemistry and Chemical Engineering Southwest University Chongqing 400715 PR China
| | - Rongxing He
- Key Laboratory of Luminescence Analysis and Molecular Sensing (Southwest University) Ministry of Education, College of Chemistry and Chemical Engineering Southwest University Chongqing 400715 PR China
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