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Chen Y, Cheng M, Jin L, Yang H, Ma S, Lin Z, Dai G, Liu X. Heterogeneous activation of self-generated H 2O 2 by Pd@UiO-66(Zr) for trimethoprim degradation: Efficiency and mechanism. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2024; 366:121868. [PMID: 39032257 DOI: 10.1016/j.jenvman.2024.121868] [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: 03/28/2024] [Revised: 06/19/2024] [Accepted: 07/12/2024] [Indexed: 07/23/2024]
Abstract
The Fenton reaction is recognized as an effective technique for degrading persistent organic pollutants, such as the emerging pollutant trimethoprim (TMP). Recently, due to the excellent reducibility of active hydrogen ([H]), Pd-H2 has been preferred for Fenton-like reactions and the specific H2 activation of Pd-based catalysts. Herein, a heterogeneous Fenton catalyst named the hydrogen-accelerated oxygen reduction Fenton (MHORF@UiO-66(Zr)) system was prepared through the strategy of building ships in the bottle. The [H] has been used for the acceleration of the reduction of Fe(III) and self-generate H2O2. The systematic characterization demonstrated that the nano Pd0 particle was highly dispersed into the UiO-66(Zr). The results found that 20 mg L-1 of TMP was thoroughly degraded within 90 min in the MHORF@UiO-66(Zr) system under conditions of initial pH 3, 30 mL min-1 H2, 2 g L-1 Pd@UiO-66(Zr) and 25 μM Fe2+. The hydroxyl radical as well as the singlet oxygen were evidenced to be the main reactive oxygen species by scavenging experiments and electron spin resonance. In addition, both reducing Fe(III) and self-generating H2O2 could be achieved due to the strong metal-support interaction (SMSI) between the nano Pd0 particles and UiO-66(Zr) confirmed by the correlation results of XPS and calculation of density functional theory. Finally, the working mechanism of the MHORF@UiO-66(Zr) system and the possible degradation pathway of the TMP have been proposed. The novel system exhibited excellent reusability and stability after six cyclic reaction processes.
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Affiliation(s)
- Yijun Chen
- Institute of Environmental Protection Application Technology, School of Environmental Science and Engineering, Suzhou University of Science and Technology, Suzhou, 215009, Jiangsu Province, China
| | - Meina Cheng
- Institute of Environmental Protection Application Technology, School of Environmental Science and Engineering, Suzhou University of Science and Technology, Suzhou, 215009, Jiangsu Province, China
| | - Long Jin
- Institute of Environmental Protection Application Technology, School of Environmental Science and Engineering, Suzhou University of Science and Technology, Suzhou, 215009, Jiangsu Province, China; Jiangsu Collaborative Innovation Center of Technology and Material of Water Treatment, Suzhou University of Science and Technology, Suzhou, 215009, Jiangsu Province, China; Jiangsu Meixin Environmental Technology Co., Ltd., Suzhou, 215500, Jiangsu Province, China.
| | - Hailiang Yang
- Suzhou Cott Environmental Protection Co., Ltd., Suzhou, 215156, Jiangsu Province, China
| | - Sanjian Ma
- Suzhou Cott Environmental Protection Co., Ltd., Suzhou, 215156, Jiangsu Province, China
| | - Zixia Lin
- Testing Center, Yangzhou University, Yangzhou, 225009, Jiangsu Province, China
| | - Guoliang Dai
- School of Chemistry and Life Sciences, Suzhou University of Science and Technology, Suzhou, 215009, Jiangsu Province, China
| | - Xin Liu
- Institute of Environmental Protection Application Technology, School of Environmental Science and Engineering, Suzhou University of Science and Technology, Suzhou, 215009, Jiangsu Province, China; Jiangsu Collaborative Innovation Center of Technology and Material of Water Treatment, Suzhou University of Science and Technology, Suzhou, 215009, Jiangsu Province, China.
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You S, Di J, Zhang T, Chen Y, Yang R, Gao Y, Li Y, Gai X. Activation of Peroxymonosulfate by Co-Ni-Mo Sulfides/CNT for Organic Pollutant Degradation. Molecules 2024; 29:3633. [PMID: 39125039 PMCID: PMC11313894 DOI: 10.3390/molecules29153633] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2024] [Revised: 07/24/2024] [Accepted: 07/30/2024] [Indexed: 08/12/2024] Open
Abstract
To explore advanced oxidation catalysts, peroxymonosulfate (PMS) activation by Co-Ni-Mo/carbon nanotube (CNT) composite catalysts was investigated. A compound of NiCo2S4, MoS2, and CNTs was successfully prepared using a simple one-pot hydrothermal method. The results revealed that the activation of PMS by Co-Ni-Mo/CNT yielded an exceptional Rhodamine B decolorization efficiency of 99% within 20 min for the Rhodamine B solution. The degradation rate of Co-Ni-Mo/CNT was 4.5 times higher than that of Ni-Mo/CNT or Co-Mo/CNT, and 1.9 times as much than that of Co-Ni/CNT. Additionally, radical quenching experiments revealed that the principal active groups were 1O2, surface-bound SO4•-, and •OH radicals. Furthermore, the catalyst exhibited low metal ion leaching and favorable stability. Mechanism studies revealed that Mo4+ on the surface of MoS2 participated in the oxidation of PMS and the transformation of Co3+/Co2+ and Ni3+/Ni2+. The synergism between MoS2 and NiCo2S4 reduces the charge transfer resistance between the catalyst and solution interface, thus accelerating the reaction rate. Interconnected structures composed of metal sulfides and CNTs can also enhance the electron transfer process and afford sufficient active reaction sites. Our work provides a further understanding of the design of multi-metal sulfides for wastewater treatment.
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Affiliation(s)
- Shihao You
- School of Biological and Chemical Engineering, Zhejiang University of Science and Technology, Hangzhou 310023, China; (S.Y.); (T.Z.); (Y.C.); (R.Y.)
| | - Jing Di
- School of Biological and Chemical Engineering, Zhejiang University of Science and Technology, Hangzhou 310023, China; (S.Y.); (T.Z.); (Y.C.); (R.Y.)
| | - Tao Zhang
- School of Biological and Chemical Engineering, Zhejiang University of Science and Technology, Hangzhou 310023, China; (S.Y.); (T.Z.); (Y.C.); (R.Y.)
| | - Yufeng Chen
- School of Biological and Chemical Engineering, Zhejiang University of Science and Technology, Hangzhou 310023, China; (S.Y.); (T.Z.); (Y.C.); (R.Y.)
| | - Ruiqin Yang
- School of Biological and Chemical Engineering, Zhejiang University of Science and Technology, Hangzhou 310023, China; (S.Y.); (T.Z.); (Y.C.); (R.Y.)
| | - Yesong Gao
- China Construction Eco-Environmental Group Co., Ltd., Beijing 100037, China;
| | - Yin Li
- Ecology and Health Institute, Hangzhou Vocational & Technical College, Hangzhou 310018, China;
| | - Xikun Gai
- School of Biological and Chemical Engineering, Zhejiang University of Science and Technology, Hangzhou 310023, China; (S.Y.); (T.Z.); (Y.C.); (R.Y.)
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Qian S, Li L, Wu K, Wang Y, Wei G, Zheng J. Emerging and Versatile Platforms of Metal-Ion-Doped Carbon Dots for Biosensing, Bioimaging, and Disease Therapy. ChemMedChem 2023; 18:e202200479. [PMID: 36250779 DOI: 10.1002/cmdc.202200479] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2022] [Revised: 10/16/2022] [Indexed: 01/24/2023]
Abstract
Metal ions possess abundant electrons and unoccupied orbitals, as well as large atomic radii, whose doping into carbon dots (CDs) is a facile strategy to endow CDs with additional physicochemical characteristics. After being doped with metal ions, CDs reveal obvious changes in their optical, electronic, and magnetic properties by adjustments to their electron density distribution and the energy gaps, leading them to be promising and competitive candidates as labeling probes, imaging agents, catalysts, nanodrugs, and so on. In this review, we summarize the fabrication methods of metal-ion-doped CDs (M-CDs), and highlight their biological applications including biosensing, bioimaging, tumor therapy, and anti-microbial treatment. Finally, the challenging future perspectives of M-CDs are analyzed. We hope this review will provide inspiration for further development of M-CDs in various biological aspects, and help readers who are interested in M-CDs and their biological applications.
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Affiliation(s)
- Sihua Qian
- Cixi Institute of Biomedical Engineering, Ningbo Institute of Materials Technology & Engineering, Chinese Academy of Sciences (CAS), 315300, Ningbo, P. R. China
| | - Lin Li
- Cixi Institute of Biomedical Engineering, Ningbo Institute of Materials Technology & Engineering, Chinese Academy of Sciences (CAS), 315300, Ningbo, P. R. China
| | - Kerong Wu
- Translational Research Laboratory for Urology, Department of Urology, Ningbo First Hospital, 315010, Ningbo, P. R. China
| | - Yuhui Wang
- Cixi Institute of Biomedical Engineering, Ningbo Institute of Materials Technology & Engineering, Chinese Academy of Sciences (CAS), 315300, Ningbo, P. R. China
| | - Gang Wei
- College of Chemistry and Chemical Engineering, Qingdao University, 266071, Qingdao, P. R. China
| | - Jianping Zheng
- Cixi Institute of Biomedical Engineering, Ningbo Institute of Materials Technology & Engineering, Chinese Academy of Sciences (CAS), 315300, Ningbo, P. R. China
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