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Sun X, Wang Y, Song M, Liu F, Lan DH, Yin SF, Chen P. Local polarization redistribution in Zn mIn 2S 3+m for the enhancing synergetic piezo-photocatalytic overall water splitting. J Colloid Interface Sci 2024; 665:999-1006. [PMID: 38579390 DOI: 10.1016/j.jcis.2024.03.199] [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: 02/12/2024] [Revised: 03/22/2024] [Accepted: 03/29/2024] [Indexed: 04/07/2024]
Abstract
Piezo-photocatalytic water (deuterium oxide) decomposition is a promising strategy for realizing renewable energy, but the manipulation of the polar center remains a big challenge. This study uses a simple low-temperature hydrothermal process to successfully manufacture ZnmIn2Sm+3 (m = 1-3) (ZnIn2S4, Zn2In2S5 and Zn3In2S6). Incorporating both experimental and theoretical analyses, the structural contraction and local polarization of the Zn-S bond in Zn2In2S5 enhance the piezoelectric response and surface charge accumulation, which facilitate charge transfer and reduce the activation energy of water. Remarkably, Zn2In2S5 exhibits excellent piezoelectric photocatalytic total water splitting performance (H2/O2: 4284.72/1967.00 μmol g-1h-1), which is 1.77 times that of photocatalytic performance. Moreover, a significant enhancement in D2O splitting performance can be obtained for the optimized Zn2In2S5. Our work offers valuable insights into the disclosure of local polarization in catalysts for enhancing piezo-photocatalytic overall water splitting.
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Affiliation(s)
- Xiaomei Sun
- Provincial Guizhou Key Laboratory of Green Chemical and Clean Energy Technology, School of Chemistry and Chemical Engineering, Guizhou University, Guiyang 550025, Guizhou, China
| | - Yi Wang
- Provincial Guizhou Key Laboratory of Green Chemical and Clean Energy Technology, School of Chemistry and Chemical Engineering, Guizhou University, Guiyang 550025, Guizhou, China
| | - Meiyang Song
- Provincial Guizhou Key Laboratory of Green Chemical and Clean Energy Technology, School of Chemistry and Chemical Engineering, Guizhou University, Guiyang 550025, Guizhou, China
| | - Fei Liu
- Provincial Guizhou Key Laboratory of Green Chemical and Clean Energy Technology, School of Chemistry and Chemical Engineering, Guizhou University, Guiyang 550025, Guizhou, China.
| | - Dong-Hui Lan
- Hunan Provincial Key Laboratory of Environmental Catalysis and Waste Rechemistry, College of Materials and Chemical Engineering, Hunan Institute of Engineering, Xiangtan, Hunan 411104, PR China.
| | - Shuang-Feng Yin
- College of Chemistry and Chemical Engineering, Central South University of Forestry and Technology, Changsha 410004, PR China; Advanced Catalytic Engineering Research Center of the Ministry of Education, State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, PR China
| | - Peng Chen
- Provincial Guizhou Key Laboratory of Green Chemical and Clean Energy Technology, School of Chemistry and Chemical Engineering, Guizhou University, Guiyang 550025, Guizhou, China.
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Liu G, Hu Z, Chen X, Li W, Wu Y, Liu Z, Miao L, Luo Z, Wang J, Guo Y. Oxygen vacancy-rich Ag/CuO nanoarray mesh fabricated by laser ablation for efficient bacterial inactivation. JOURNAL OF HAZARDOUS MATERIALS 2024; 465:133269. [PMID: 38134696 DOI: 10.1016/j.jhazmat.2023.133269] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/13/2023] [Revised: 12/07/2023] [Accepted: 12/12/2023] [Indexed: 12/24/2023]
Abstract
The contamination of drinking water by microbes is a critical health concern, underscoring the need for safe, reliable, and efficient methods to treat pathogenic microorganisms. While most sterilization materials are available in powder form, this presents safety risks and challenges in recycling. Herein, this study reports the preparation of an innovative copper oxide supported silver monolithic nanoarray mesh with abundant oxygen vacancies (Ag/CuO-VO) by laser ablation. The instantaneous high temperature caused by laser ablation preserves the material's original structure while generating oxygen vacancies on the CuO surface. The Ag/CuO-VO mesh demonstrated a remarkable ability to inactivate over 99% of Escherichia coli (E. Coli) within 20 min. The oxygen vacancies in the Ag/CuO-VO enhance interactions between oxygen species and the Ag/CuO-VO, leading to the accumulation of large amounts of reactive oxygen species (ROS). The generated ROS effectively disrupt both layers of the bacterial cell wall - the peptidoglycan and the phospholipid - as confirmed by Fourier Transform Infrared (FTIR) spectroscopy, culminating in cell death. This research presents a monolithic material capable of inactivating pathogenic microorganisms efficiently, offering a significant advancement in water sterilization technology.
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Affiliation(s)
- Guoli Liu
- College of Chemistry, Central China Normal University, Wuhan 430079, PR China
| | - Zhixin Hu
- College of Chemistry, Central China Normal University, Wuhan 430079, PR China
| | - Xiaoping Chen
- College of Chemistry, Central China Normal University, Wuhan 430079, PR China
| | - Weihao Li
- College of Chemistry, Central China Normal University, Wuhan 430079, PR China
| | - Yan Wu
- College of Chemistry, Central China Normal University, Wuhan 430079, PR China
| | - Zuocheng Liu
- School of Environmental Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, PR China
| | - Lei Miao
- School of Environmental Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, PR China
| | - Zhu Luo
- College of Chemistry, Central China Normal University, Wuhan 430079, PR China; Engineering Research Center of Photoenergy Utilization for Pollution Control and Carbon Reduction, Ministry of Education, Wuhan 430079, PR China; Wuhan Institute of Photochemistry and Technology, Wuhan 430083, PR China
| | - Jinlong Wang
- College of Chemistry, Central China Normal University, Wuhan 430079, PR China; Engineering Research Center of Photoenergy Utilization for Pollution Control and Carbon Reduction, Ministry of Education, Wuhan 430079, PR China; Wuhan Institute of Photochemistry and Technology, Wuhan 430083, PR China.
| | - Yanbing Guo
- College of Chemistry, Central China Normal University, Wuhan 430079, PR China; Engineering Research Center of Photoenergy Utilization for Pollution Control and Carbon Reduction, Ministry of Education, Wuhan 430079, PR China; Wuhan Institute of Photochemistry and Technology, Wuhan 430083, PR China.
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