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Ma J, Zhao Q, Ye Z. An eco-friendly self-assembled catalyst preparation and study of tetracycline degradation: Performance, mechanism to application. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 925:171768. [PMID: 38499103 DOI: 10.1016/j.scitotenv.2024.171768] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/29/2023] [Revised: 02/25/2024] [Accepted: 03/15/2024] [Indexed: 03/20/2024]
Abstract
Chloromethyl styrene resin can undergo specific chemical modifications and is an excellent adsorbent material for treating difficult-to-degrade substances in wastewater. In this study, chloromethyl styrene resin will be used as a carrier, and polystyrene chloromethyl resin (PS-Cl) was converted into PS-NH2 by amino modification. The self-assembly of cobalt-based metal-organic framework (CoMOF) was induced on the surface of PS-NH2 by using a novel preparation technique. The performance of the prepared PS-NH2@CoMOF self-assembled catalysts with core-shell-like structures in degrading the target pollutant, tetracycline (TC), was evaluated. The catalysts effectively induced rapid OH radical production from H2O2, had a degradation rate of as high as 88.3 % for 20 mg/L TC solution, and were highly stable and adaptable to aqueous environments. Free radicals and intermediates in the catalytic degradation process were detected by electron paramagnetic resonance and high-performance liquid chromatography mass spectrometry, and possible catalytic degradation pathways were analyzed. The catalytic dissociation behavior of H2O2 in the presence of different catalysts was studied in depth and compared with that of similar metal-organic framework materials through density-functional theory calculations. Results demonstrated the excellent performance of the PS-NH2@CoMOF catalysts. Finally, the catalysts' potential for use in practical engineering applications was evaluated with a flow column experimental model, and the results were more than satisfactory. Therefore, the use of the catalysts to degrade TC has great potential.
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Affiliation(s)
- Jinmao Ma
- Department of Environmental Engineering, Peking University, the Key Laboratory of Water and Sediment Sciences, Ministry of Education, Beijing 100871, China.
| | - Quanlin Zhao
- Department of Environmental Engineering, Peking University, the Key Laboratory of Water and Sediment Sciences, Ministry of Education, Beijing 100871, China.
| | - Zhengfang Ye
- Department of Environmental Engineering, Peking University, the Key Laboratory of Water and Sediment Sciences, Ministry of Education, Beijing 100871, China.
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Andaveh R, Sabour Rouhaghdam A, Seif A, Wang K, Maleki M, Ai J, Barati Darband G, Li J. In Situ Assembly of a Superaerophobic CoMn/CuNiP Heterostructure as a Trifunctional Electrocatalyst for Ampere-Level Current Density Urea-Assisted Hydrogen Production. ACS APPLIED MATERIALS & INTERFACES 2024; 16:8717-8732. [PMID: 38326933 DOI: 10.1021/acsami.3c16122] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/09/2024]
Abstract
Urea electrolysis is a promising energy-efficient hydrogen production process with environmental benefits, but the lack of efficient and sustainable ampere-level current density electrocatalysts fabricated through simple methods is a major challenge for commercialization. Herein, we present an efficient and stable heterostructure electrocatalyst for full urea and water electrolysis in a convenient and time-efficient preparation manner. Overall, superhydrophilic/superaerophobic CoMn/CuNiP/NF exhibits exceptional performance for the hydrogen evolution reaction (HER) (-33.8, -184.4, and -234.8 mV at -10, -500, and -1000 mA cm-2, respectively), urea electro-oxidation reaction (UOR) [1.28, 1.43, and 1.51 V (vs RHE) at 10, 500, and 1000 mA cm-2, respectively], and oxygen evolution reaction (OER) [1.45, 1.67, and 1.74 V (vs RHE) at 10, 500, and 1000 mA cm-2, respectively]. Moreover, the superaerophobic CoMn/CuNiP/NF demonstrates promising potential in full urea (1.33, 1.57, and 1.60 V at 10, 500, and 1000 mA cm-2, respectively) and water (1.46 V, 1.78, and 1.86 at 10, 500, and 1000 mA cm-2, respectively) electrolysis. Based on X-ray photoelectron spectroscopy results, it was determined that the surface of the CoMn/CuNiP electrode was rich in redox pairs such as Ni2+/Ni3+, Cu+/Cu2+, Co2+/Co3+, and Mn2+/Mn3+, which are crucial for the formation of active sites for the OER and UOR, such as NiOOH, MnOOH, and CoOOH, thereby enhancing the catalytic activity. Besides, the in situ assembled CoMn/CuNiP/NF displayed highly stable performance for HER, OER, and UOR with high Faradaic efficiency for over 500 h. This research offers a simple and efficient method for manufacturing a high-efficiency and stable trifunctional electrocatalyst capable of delivering ampere-level current density in urea-assisted hydrogen production. Our density functional theory calculations reveal the potential of CoMn/CuNiP as an effective catalyst, enhancing the electronic properties and catalytic performance. The near-zero Gibbs free-energy change for HER underscores its promise, while reduced CO2 desorption energies and charge redistribution support efficient UOR. These findings signify CoMn/CuNiP's potential for electrochemical applications.
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Affiliation(s)
- Reza Andaveh
- Department of Materials Engineering, Faculty of Engineering, Tarbiat Modares University, Tehran 14115111, P.O. Box: 14115-143, Iran
| | - Alireza Sabour Rouhaghdam
- Department of Materials Engineering, Faculty of Engineering, Tarbiat Modares University, Tehran 14115111, P.O. Box: 14115-143, Iran
| | - Abdolvahab Seif
- Dipartimento di Fisica e Astronomia "G. Galilei", Università di Padova, via Marzolo 8, Padova I-35131, Italy
| | - Kun Wang
- School of Chemistry, Southwest Jiaotong University, Chengdu 610031, China
| | - Meysam Maleki
- Department of Materials Engineering, Faculty of Engineering, Tarbiat Modares University, Tehran 14115111, P.O. Box: 14115-143, Iran
| | - Jianping Ai
- School of Chemistry, Southwest Jiaotong University, Chengdu 610031, China
| | - Ghasem Barati Darband
- Materials and Metallurgical Engineering Department, Faculty of Engineering, Ferdowsi University of Mashhad, Mashhad 91775-1111, Iran
| | - Jinyang Li
- School of Chemistry, Southwest Jiaotong University, Chengdu 610031, China
- Yibin Institute of Southwest Jiaotong University, Yibin 644000, China
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Zhou W, He P, Wu A, Wang Y, Shuai Y, Zhang T, Liu S, Liu Y. Preparation of Ir-Cu/C nanosheets for the oxygen evolution reaction by room temperature plasma carbonization. Chem Commun (Camb) 2023; 59:11260-11263. [PMID: 37661845 DOI: 10.1039/d3cc02179c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/05/2023]
Abstract
Ir-Cu/C nanosheets with a thickness of about 2 nm were prepared using Ar plasma carbonization and reduction at room temperature. The obtained Ir-Cu/C catalyst, composed of single atom Ir-doped Cu nanoparticles embedded in a carbon framework, exhibits efficient oxygen evolution reaction activity with a low overpotential.
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Affiliation(s)
- Wenxin Zhou
- School of Physical Sciences, Guizhou University, Guiyang 550025, China.
| | - Pingni He
- School of Physical Sciences, Guizhou University, Guiyang 550025, China.
| | - Andong Wu
- Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
- School of Nuclear Science and Technology, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Yanyan Wang
- School of Physical Sciences, Guizhou University, Guiyang 550025, China.
| | - Yu Shuai
- School of Physical Sciences, Guizhou University, Guiyang 550025, China.
| | - Tao Zhang
- School of Physical Sciences, Guizhou University, Guiyang 550025, China.
| | - Shucheng Liu
- School of Physical Sciences, Guizhou University, Guiyang 550025, China.
| | - Yi Liu
- School of Physical Sciences, Guizhou University, Guiyang 550025, China.
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