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Kim V, Lee DW, Noh HR, Lee J, Kim TH, Park J, Kim JY, Lim SH. Copper-Based Two-Dimensional Metal-Organic Frameworks for Fenton-like Photocatalytic Degradation of Methylene Blue under UV and Sunlight Irradiation. Inorg Chem 2024; 63:8832-8845. [PMID: 38687621 DOI: 10.1021/acs.inorgchem.4c00627] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/02/2024]
Abstract
To efficiently degrade organic pollutants, photocatalysts must be effective under both ultraviolet (UV) radiation and sunlight. We synthesized a series of new metal-organic frameworks by using mild hydrothermal conditions. These frameworks incorporate three distinct bipyridyl ligands: pyrazine (pyr), 4,4'-bipyridine (bpy), and 1,2-bis(4-pyridyl)ethane (bpe). The resulting compounds are denoted as [Cu(pyz)(H2O)2MF6], [Cu(bpy)2(H2O)2]·MF6, and [Cu(bpe)2(H2O)2]·MF6·H2O [M = Zr (1, 3, and 5) and Hf (2, 4, and 6)]. All six compounds exhibited a two-dimensional crystal structure comprising infinitely nonintersecting linear chains. Compound 3 achieved 100% degradation of methylene blue (MB) after 8 min under UV irradiation and 100 min under natural sunlight in the presence of H2O2 as the electron acceptor. For compound 5, 100% MB degradation was achieved after 120 min under sunlight and 10 min under UV light. Moreover, reactive radical tests revealed that the dominant species involved in photocatalytic degradation are hydroxyl (•OH), superoxide radicals (•O2-), and photogenerated holes (h+). The photodegradation process followed pseudo-first-order kinetics, with photodegradation rate constants of 0.362 min-1 (0.039 min-1) for 3 and 0.316 min-1 (0.033 min-1) for 5 under UV (sunlight) irradiation. The developed photocatalysts with excellent activity and good recyclability are promising green catalysts for degrading organic pollutants during environmental decontamination.
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Affiliation(s)
- Viktoriya Kim
- Nuclear Chemistry Technology Division, Korea Atomic Energy Research Institute, Daejeon 34057, Republic of Korea
- Department of Nuclear Science and Technology, University of Science and Technology, Daejeon 34113, Republic of Korea
| | - Dong Woo Lee
- Nuclear Chemistry Technology Division, Korea Atomic Energy Research Institute, Daejeon 34057, Republic of Korea
| | - Hye Ran Noh
- Nuclear Chemistry Technology Division, Korea Atomic Energy Research Institute, Daejeon 34057, Republic of Korea
- Department of Nuclear Science and Technology, University of Science and Technology, Daejeon 34113, Republic of Korea
| | - Jeongmook Lee
- Nuclear Chemistry Technology Division, Korea Atomic Energy Research Institute, Daejeon 34057, Republic of Korea
- Department of Nuclear Science and Technology, University of Science and Technology, Daejeon 34113, Republic of Korea
| | - Tae-Hyeong Kim
- Nuclear Chemistry Technology Division, Korea Atomic Energy Research Institute, Daejeon 34057, Republic of Korea
| | - Junghwan Park
- Nuclear Chemistry Technology Division, Korea Atomic Energy Research Institute, Daejeon 34057, Republic of Korea
- Department of Nuclear and Quantum Engineering, Korea Advanced Institute of Science and Technology, Daejeon 34141, Republic of Korea
| | - Jong-Yun Kim
- Nuclear Chemistry Technology Division, Korea Atomic Energy Research Institute, Daejeon 34057, Republic of Korea
- Department of Nuclear Science and Technology, University of Science and Technology, Daejeon 34113, Republic of Korea
| | - Sang Ho Lim
- Nuclear Chemistry Technology Division, Korea Atomic Energy Research Institute, Daejeon 34057, Republic of Korea
- Department of Nuclear Science and Technology, University of Science and Technology, Daejeon 34113, Republic of Korea
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Wang C, Gao Y, Gao X, Wang H, Tian J, Wang L, Zhou B, Ye Z, Wan J, Wen W. Synergistic effect of sunlight induced photothermal conversion and H 2O 2 release based on hybridized tungsten oxide gel for cancer inhibition. Sci Rep 2016; 6:35876. [PMID: 27775086 PMCID: PMC5075885 DOI: 10.1038/srep35876] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2016] [Accepted: 10/05/2016] [Indexed: 12/30/2022] Open
Abstract
A highly efficient photochromic hydrogel was successfully fabricated via casting precursor, which is based on amorphous tungsten oxide and poly (ethylene oxide)-block-poly (propylene oxide)-block-poly (ethylene oxide). Under simulated solar illumination, the hydrogel has a rapid and controlled temperature increasing ratio as its coloration degree. Localized electrons in the amorphous tungsten oxide play a vital role in absorption over a broad range of wavelengths from 400 nm to 1100 nm, encompassing the entire visible light and infrared regions in the solar spectrum. More importantly, the material exhibits sustainable released H2O2 induced by localized electrons, which has a synergistic effect with the rapid surface temperature increase. The amount of H2O2 released by each film can be tuned by the light irradiation, and the film coloration can indicate the degree of oxidative stress. The ability of the H2O2-releasing gels in vitro study was investigated to induce apoptosis in melanoma tumor cells and NIH 3T3 fibroblasts. The in vivo experimental results indicate that these gels have a greater healing effect than the control in the early stages of tumor formation.
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Affiliation(s)
- Cong Wang
- Institute of Microstructure and Property of Advanced Materials, Beijing University of Technology, Beijing 100124, China
- Department of Physics, The Hong Kong University of Science and Technology, Clear water bay, Kowloon, Hong Kong
| | - Yibo Gao
- Division of Environmental Science, The Hong Kong University of Science and Technology, Clear water bay, Kowloon, Hong Kong
| | - Xinghua Gao
- Shenzhen PKU-HKUST Medical Center, Biomedical Research Institute, Shenzhen-PKU-HKUST Medical Center, Shenzhen, China
- Materials Genome Institute, Shanghai University, Shanghai 200444, China
| | - Hua Wang
- Department of Laboratory Medicine, Renji Hospital, School of Medicine, Shanghai Jiaotong University, Shanghai, China
| | - Jingxuan Tian
- Department of Physics, The Hong Kong University of Science and Technology, Clear water bay, Kowloon, Hong Kong
| | - Li Wang
- Department of Physics, The Hong Kong University of Science and Technology, Clear water bay, Kowloon, Hong Kong
| | - Bingpu Zhou
- Department of Physics, The Hong Kong University of Science and Technology, Clear water bay, Kowloon, Hong Kong
- Institute of Applied Physics and Materials Engineering, University of Macau, Taipa, Macau
| | - Ziran Ye
- Department of Physics, The Hong Kong University of Science and Technology, Clear water bay, Kowloon, Hong Kong
| | - Jun Wan
- Shenzhen PKU-HKUST Medical Center, Biomedical Research Institute, Shenzhen-PKU-HKUST Medical Center, Shenzhen, China
| | - Weijia Wen
- Department of Physics, The Hong Kong University of Science and Technology, Clear water bay, Kowloon, Hong Kong
- Division of Environmental Science, The Hong Kong University of Science and Technology, Clear water bay, Kowloon, Hong Kong
- Materials Genome Institute, Shanghai University, Shanghai 200444, China
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