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Tang X, Tang R, Li W, Li X, Zheng J, Li L, Zhou Z, Yi F, Deng Y, Gong D. Tourmaline/pyrite dual mineral photocatalysis with a powerful surface electric field for efficient antibiotic removal. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2024; 366:121718. [PMID: 38971064 DOI: 10.1016/j.jenvman.2024.121718] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/28/2024] [Revised: 06/02/2024] [Accepted: 07/02/2024] [Indexed: 07/08/2024]
Abstract
Pyrite (FeS2) has garnered attention due to its narrow bandgap, high light absorption, and low cost. However, the rapid recombination of charge carriers hinders its practical application. Surface electric field is a unique characteristic of tourmaline, which can induce effective separation of photo generated electrons and holes. This study successfully combined two directly mined natural minerals, tourmaline and pyrite, to form TFS. Characterization and experiments show that the surface electric field of tourmaline can significantly enhance the photocatalytic activity of TFS. Tetracycline (TC, 50 ppm) was degraded by 95% with 60 min, and the TFS reaction rate constant reached 0.0439 min-1, which is 6.1 times and 17.3 times higher than that of tourmaline and FeS2. Additionally, it significantly improved light absorption and charge carrier separation capabilities. After simulating various natural environmental factors, TFS demonstrated practicality. Considered analysis of active substances and detection revealed that h+ and 1O2 radicals are significant contributors, and the photocatalytic mechanism was proposed. Furthermore, the transformation pathways and toxicity of metabolites were studied. This research offers further inspiration and insights for improving photocatalytic material performance and the green governance environment of natural resources.
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Affiliation(s)
- Xiangwei Tang
- College of Environment & Ecology, Hunan Agricultural University, Changsha, 410128, China; College of Resources, Hunan Agricultural University, Changsha, 410128, China
| | - Rongdi Tang
- College of Environment & Ecology, Hunan Agricultural University, Changsha, 410128, China; College of Environmental Science and Engineering, Hunan University, Changsha, 410082, China.
| | - Wenbo Li
- College of Environment & Ecology, Hunan Agricultural University, Changsha, 410128, China; College of Resources, Hunan Agricultural University, Changsha, 410128, China
| | - Xiao Li
- College of Environment & Ecology, Hunan Agricultural University, Changsha, 410128, China
| | - Jin Zheng
- College of Environment & Ecology, Hunan Agricultural University, Changsha, 410128, China; College of Resources, Hunan Agricultural University, Changsha, 410128, China
| | - Ling Li
- College of Environment & Ecology, Hunan Agricultural University, Changsha, 410128, China; College of Resources, Hunan Agricultural University, Changsha, 410128, China
| | - Zhanpeng Zhou
- College of Environment & Ecology, Hunan Agricultural University, Changsha, 410128, China; College of Resources, Hunan Agricultural University, Changsha, 410128, China
| | - Fanqi Yi
- College of Environment & Ecology, Hunan Agricultural University, Changsha, 410128, China; College of Resources, Hunan Agricultural University, Changsha, 410128, China
| | - Yaocheng Deng
- College of Environment & Ecology, Hunan Agricultural University, Changsha, 410128, China.
| | - Daoxin Gong
- College of Environment & Ecology, Hunan Agricultural University, Changsha, 410128, China.
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Tang X, Tang R, Deng Y, Li X, Li L, Zhou Z, Li W, Yuan M, Xie R, Gong D. Electric field driven tourmaline/hematite dual mineral photocatalysis for efficient antibiotic removal. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2024; 352:124135. [PMID: 38734056 DOI: 10.1016/j.envpol.2024.124135] [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: 01/24/2024] [Revised: 04/20/2024] [Accepted: 05/08/2024] [Indexed: 05/13/2024]
Abstract
Hematite (Fe2O3) has garnered attention due to its stability, economic viability, and non-toxic nature. However, the rapid recombination of charge carriers hampers its practical application. On the other hand, tourmaline's inherent surface electric field facilitates the rapid separation of photogenerated electrons and holes. In this study, two directly mined natural minerals, tourmaline and hematite (TFO), were successfully combined. Characterization and experiments indicate that the pronounced enhancement of photocatalytic activity in Fe2O3 is attributed to the electric field effect on the surface of tourmaline. TFO successfully removes 93% of tetracycline (TC, 50 ppm) within 60 min. The reaction rate constant for TFO composite material (0.0410 min-1) is 8.5 times that of tourmaline (0.0048 min-1) and 14.1 times that of hematite (0.0029 min-1). Simultaneously, it markedly improves light absorption and charge carrier separation capabilities. Through simulations of various natural environmental factors, TFO demonstrates excellent practicality. Analyzing and detecting active species revealed the involvement of four types of active species, with ·OH radicals making the most significant contribution. The photocatalytic mechanism was proposed. Furthermore, the degradation pathway of tetracycline and the toxicity of its metabolites were investigated. This work provides additional inspirations and insights for photocatalytic materials performance enhancement and natural resources green governance environment.
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Affiliation(s)
- Xiangwei Tang
- College of Environment & Ecology, Hunan Agricultural University, Changsha 410128, China; College of Resources, Hunan Agricultural University, Changsha 410128, China
| | - Rongdi Tang
- College of Environment & Ecology, Hunan Agricultural University, Changsha 410128, China; College of Environmental Science and Engineering, Hunan University, Changsha 410082, China
| | - Yaocheng Deng
- College of Environment & Ecology, Hunan Agricultural University, Changsha 410128, China
| | - Xiao Li
- College of Environment & Ecology, Hunan Agricultural University, Changsha 410128, China
| | - Ling Li
- College of Environment & Ecology, Hunan Agricultural University, Changsha 410128, China; College of Resources, Hunan Agricultural University, Changsha 410128, China
| | - Zhanpeng Zhou
- College of Environment & Ecology, Hunan Agricultural University, Changsha 410128, China; College of Resources, Hunan Agricultural University, Changsha 410128, China
| | - Wenbo Li
- College of Environment & Ecology, Hunan Agricultural University, Changsha 410128, China; College of Resources, Hunan Agricultural University, Changsha 410128, China
| | - Meng Yuan
- College of Environment & Ecology, Hunan Agricultural University, Changsha 410128, China
| | - Rucheng Xie
- College of Environment & Ecology, Hunan Agricultural University, Changsha 410128, China
| | - Daoxin Gong
- College of Environment & Ecology, Hunan Agricultural University, Changsha 410128, China.
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Liu N, Kong Y, Cao X, Yue L, Wang Z, Li X. Both nanoplastic and iron mineral types determine their heteroaggregation: Aggregation kinetics and interface process. JOURNAL OF HAZARDOUS MATERIALS 2024; 470:134192. [PMID: 38569346 DOI: 10.1016/j.jhazmat.2024.134192] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/08/2024] [Revised: 03/20/2024] [Accepted: 03/30/2024] [Indexed: 04/05/2024]
Abstract
Nanoplastics (NPs) inevitably interact with iron minerals (IMs) after being released into aquatic environments, changing their transport and fate. In this study, batch heteroaggregation kinetics of four types of NPs, i.e., polymethyl methacrylate (PMMA), polystyrene (PS-Bare), amino-polystyrene (PS-NH2), and carboxyl-polystyrene (PS-COOH), with two different IMs (hematite and magnetite) were conducted. We found that the heteroaggregation of NPs and IMs and the associated interfacial interaction mechanisms are both NPs-dependent and IMs-dependent. Specifically, the NPs had stronger heteroaggregation with hematite than magnetite; the heteroaggregation order of two IMs with NPs was PMMA > PS-NH2 > PS-Bare > PS-COOH. Moreover, hydrogen bond, complexation, hydrophobic, cation-π, and electrostatic interaction were involved in the interfacial reaction between NPs and hematite, and electrons were transferred from the NPs to the hematite, causing the reduction of Fe3+ into Fe2+. Furthermore, we first revealed that both pre-homoaggregation of NPs and IMs could affect their subsequent heteroaggregation, and the homoaggregates of IMs could be interrupted by PMMA or PS-COOH NPs introduction. Therefore, the emerging NPs pollution is likely to generate an ecological effect in terms of elemental cycles such as iron cycle. This work provides new insights into assessing the environmental transfer and ecological effects of NPs in aquatic environments.
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Affiliation(s)
- Ning Liu
- Institute of Environmental Processes and Pollution Control, School of Environment and Ecology, Jiangnan University, Wuxi 214122, China
| | - Yu Kong
- Institute of Environmental Processes and Pollution Control, School of Environment and Ecology, Jiangnan University, Wuxi 214122, China
| | - Xuesong Cao
- Institute of Environmental Processes and Pollution Control, School of Environment and Ecology, Jiangnan University, Wuxi 214122, China
| | - Le Yue
- Institute of Environmental Processes and Pollution Control, School of Environment and Ecology, Jiangnan University, Wuxi 214122, China
| | - Zhenyu Wang
- Institute of Environmental Processes and Pollution Control, School of Environment and Ecology, Jiangnan University, Wuxi 214122, China; Jiangsu Collaborative Innovation Center of Technology and Material of Water Treatment, Suzhou University of Science and Technology, Suzhou 215009, China
| | - Xiaona Li
- Institute of Environmental Processes and Pollution Control, School of Environment and Ecology, Jiangnan University, Wuxi 214122, China.
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Habibi-Yangjeh A, Pournemati K, Ahmadi Z, Khataee A. Decoration of Carbon Dots on Oxygen-Vacancy-Enriched S-Scheme TiO 2 Quantum Dots/TiO 2 Oxygen Vacancies Photocatalysts: Impressive Quantum-Dot-Sized Photocatalysts for Remediation of Antibiotics, Bacteria, and Dyes. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2024; 40:8503-8519. [PMID: 38608275 DOI: 10.1021/acs.langmuir.4c00060] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/14/2024]
Abstract
Today, cleaning the environment using photocatalytic technology is one of the main research activities. In this study, carbon dots (C-dots) were anchored on oxygen-vacancy-enriched TiO2 quantum dots (QDs)/TiO2 oxygen vacancies (OVs) using a facile procedure. The resultant ternary TiO2 QDs/TiO2 OVs/C-dots photocatalysts with a quantum dot size of almost 4.55 nm were used for detoxification of aqueous solutions containing four antibiotics and three organic dyes as well as inactivation of two pathogenic bacteria, including Escherichia coli and Staphylococcus aureus, upon visible light. The degradation constant of tetracycline over the optimized TiO2 QDs/TiO2 OVs/C-dots nanocomposite reached 714 × 10-4 min-1, which was 17.3, 12.1, and 2.92 times higher than TiO2 QDs, TiO2 OVs, and TQDs/TOVs (1:1) materials, respectively. Effective separation of electron-hole pairs between TiO2 QDs and TiO2 OVs counterparts through decorated C-dots by an established S-scheme system was the main reason for boosted photocatalytic activity. With regard to the facile growth of wheat and lentil seeds in the treated solutions, it is hoped that the TiO2 QDs/TiO2 OVs/C-dots nanocomposite with significant stability could be used to clean up wastewaters.
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Affiliation(s)
- Aziz Habibi-Yangjeh
- Department of Chemistry, Faculty of Science, University of Mohaghegh Ardabili, 56199-13131 Ardabil, Iran
| | - Khadijeh Pournemati
- Department of Chemistry, Faculty of Science, University of Mohaghegh Ardabili, 56199-13131 Ardabil, Iran
| | - Ziba Ahmadi
- Department of Biology, Faculty of Science, University of Mohaghegh Ardabili, 56199-13131 Ardabil, Iran
| | - Alireza Khataee
- Research Laboratory of Advanced Water and Wastewater Treatment Processes, Department of Applied Chemistry, Faculty of Chemistry, University of Tabriz, 51666-16471 Tabriz, Iran
- Department of Chemical Engineering, Istanbul Technical University, 34469 Istanbul, Turkey
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5
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Liu F, Zhang C, Huang W, Chen L, Wang Y, Niu J, Chuan X. 1D hollow tubular/2D nanosheet hybrid dimensional porous carbon prepared by one-step carbonization using natural minerals as templates for supercapacitors. RSC Adv 2024; 14:13190-13199. [PMID: 38655464 PMCID: PMC11037026 DOI: 10.1039/d4ra01873g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2024] [Accepted: 04/17/2024] [Indexed: 04/26/2024] Open
Abstract
The reasonable construction of one-dimensional (1D)/two-dimensional (2D) hybrid dimensional porous carbon materials with complementary advantages and disadvantages is an important approach to addressing the structural and performance deficiencies of single carbon materials, while also significantly improving the electrochemical performance of super-capacitors. In this study, 1D hollow tubular/2D nanosheet hybrid dimensional porous carbon was synthesized through one-step carbonization using 1D fibrous brucite and 2D layered magnesium carbonate hydroxide as templates. By adjusting the feed ratio of 1D fibrous and 2D layered templates, the morphology, pore structure and specific surface area (SSA) of the prepared 1D hollow tubular/2D nanosheet hybrid dimensional porous carbon were controlled. The prepared hybrid dimensional porous carbons were characterized using scanning electron microscope (SEM), X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS) and nitrogen adsorption-desorption. And their electrochemical performance was also studied by cyclic voltammograms (CV), galvanostatic charge/discharge (GCD) and electrochemical impedance spectroscopy (EIS). The results show that the use of templates with different dimensions significantly influences the morphology, pore structure, SSA and electrochemical performance of the synthesized hybrid dimensional porous carbon. The hybrid dimensional porous carbon (3F) exhibits a high specific capacitance and excellent cycling stability. 3F demonstrates the specific capacitance of 245.3 F g-1 at 1 A g-1. Furthermore, the capacity retention rate remains as high as 93.4% after 8000 cycles at 10 A g-1. This work reveals that hybrid dimensional porous carbon composed of 1D hollow carbon tubes and 2D carbon nanosheets has great potential for use in supercapacitor electrode materials.
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Affiliation(s)
- Fangfang Liu
- School of Materials Science and Physics, China University of Mining and Technology Xuzhou 221116 China
| | - Chao Zhang
- School of Materials Science and Physics, China University of Mining and Technology Xuzhou 221116 China
| | - Weiwei Huang
- School of Materials Science and Physics, China University of Mining and Technology Xuzhou 221116 China
| | - Lei Chen
- School of Materials Science and Physics, China University of Mining and Technology Xuzhou 221116 China
| | - Yuanshuang Wang
- School of Materials Science and Physics, China University of Mining and Technology Xuzhou 221116 China
| | - Jinan Niu
- School of Materials Science and Physics, China University of Mining and Technology Xuzhou 221116 China
| | - Xiuyun Chuan
- Key Laboratory of Orogen Belts and Crustal Evolution, School of Earth and Space Sciences, Peking University Beijing 100871 China
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Song Y, Bao Z, Gu Y. Photocatalytic Enhancement Strategy with the Introduction of Metallic Bi: A Review on Bi/Semiconductor Photocatalysts. CHEM REC 2024; 24:e202300307. [PMID: 38084448 DOI: 10.1002/tcr.202300307] [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: 09/23/2023] [Revised: 11/17/2023] [Indexed: 03/10/2024]
Abstract
Semiconductor photocatalysis has great potential in the fields of solar fuel production and environmental remediation. Nevertheless, the photocatalytic efficiency still constrains its practical production applications. The development of new semiconductor materials is essential to enhance the solar energy conversion efficiency of photocatalytic systems. Recently, the research on enhancing the photocatalytic performance of semiconductors by introducing bismuth (Bi) has attracted widespread attention. In this review, we briefly overview the main synthesis methods of Bi/semiconductor photocatalysts and summarize the control of the micromorphology of Bi in Bi/semiconductors and the key role of Bi in the catalytic system. In addition, the promising applications of Bi/semiconductors in photocatalysis, such as pollutant degradation, sterilization, water separation, CO2 reduction, and N2 fixation, are outlined. Finally, an outlook on the challenges and future research directions of Bi/semiconductor photocatalysts is given. We aim to offer guidance for the rational design and synthesis of high-efficiency Bi/semiconductor photocatalysts for energy and environmental applications.
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Affiliation(s)
- Yankai Song
- School of Materials and Chemistry, University of Shanghai for Science and Technology, Shanghai, 200093, China
| | - Zongqi Bao
- Foreign Language Department, University of Shanghai for Science and Technology, Shanghai, 200093, China
| | - Yingying Gu
- School of Materials and Chemistry, University of Shanghai for Science and Technology, Shanghai, 200093, China
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Durodola SS, Akeremale OK, Ore OT, Bayode AA, Badamasi H, Olusola JA. A Review on Nanomaterial as Photocatalysts for Degradation of Organic Pollutants. J Fluoresc 2024; 34:501-514. [PMID: 37432581 DOI: 10.1007/s10895-023-03332-x] [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: 05/11/2023] [Accepted: 06/29/2023] [Indexed: 07/12/2023]
Abstract
Eliminating hazardous organic contaminants from water is a major concern today. Nanomaterials with their textural features, large surface area, electrical conductivity, and magnetic properties make them efficient for the removal and photocatalytic degradation of organic pollutants. The reaction mechanisms of the photocatalytic oxidation of common organic pollutants were critically examined. A detailed review of articles published on photocatalytic degradation of hydrocarbons, pesticides, and dyes was presented therein. This review seeks to bridge information gaps on the reported nanomaterial as photocatalysts for the degradation of organic pollutants under sub-headings, nanomaterials, organic pollutants, degradation of organic pollutants, and mechanisms of photocatalytic activities.
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Affiliation(s)
- Solomon S Durodola
- Department of Chemistry, Obafemi Awolowo University, 220005, Ile-Ife, Nigeria.
| | - Olaniran K Akeremale
- Department of Science and Technology Education, Bayero University, 3011, Kano, Nigeria
| | - Odunayo T Ore
- Department of Chemistry, Obafemi Awolowo University, 220005, Ile-Ife, Nigeria
| | - Ajibola A Bayode
- Department of Chemical Sciences, Faculty of Natural Sciences, Redeemer's University, P.M.B. 230, Ede, 232101, Nigeria
| | - Hamza Badamasi
- Department of Chemistry, Federal University Dutse, Dutse, Jigawa State, Nigeria
| | - Johnson Adedeji Olusola
- Department of Geography and Planning Science, Ekiti State University, Ado Ekiti, Ekiti State, Nigeria
- Institute of Ecology and Environmental Studies, Obafemi Awolowo University, Ile-Ife, 220005, Nigeria
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Liu Q, Li H, Zhang Y, Chen W, Yu S, Chen Y. Porphyrin/phthalocyanine-based porous organic polymers for pollutant removal and detection: Synthesis, mechanisms, and challenges. ENVIRONMENTAL RESEARCH 2023; 239:117406. [PMID: 37839529 DOI: 10.1016/j.envres.2023.117406] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/19/2023] [Revised: 09/24/2023] [Accepted: 10/11/2023] [Indexed: 10/17/2023]
Abstract
The growing global concern about environmental threats due to environmental pollution requires the development of environmentally friendly and efficient removal/detection materials and methods. Porphyrin/phthalocyanine (Por/Pc) based porous organic polymers (POPs) as a newly emerging porous material are prepared through polymerizing building blocks with different structures. Benefiting from the high porosity, adjustable pore structure, and enzyme-like activities, the Por/Pc-POPs can be the ideal platform to study the removal and detection of pollutants. However, a systematic summary of their application in environmental treatment is still lacking to date. In this review, the development of various Por/Pc-POPs for pollutant removal and detection applications over the past decade was systematically addressed for the first time to offer valuable guidance on environmental remediation through the utilization of Por/Pc-POPs. This review is divided into two sections (pollutants removal and detection) focusing on Por/Pc-POPs for organic, inorganic, and gaseous pollutants adsorption, photodegradation, and chemosensing, respectively. The related removal and sensing mechanisms are also discussed, and the methods to improve removal and detection efficiency and selectivity are also summarized. For the future practical application of Por/Pc-POPs, this review provides the emerging research directions and their application possibility and challenges in the removal and detection of pollutants.
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Affiliation(s)
- Qi Liu
- School of Materials Science and Engineering, China University of Petroleum (East China), Qingdao, 266580, Shandong, China
| | - Hao Li
- School of Materials Science and Engineering, China University of Petroleum (East China), Qingdao, 266580, Shandong, China
| | - Yuming Zhang
- School of Materials Science and Engineering, China University of Petroleum (East China), Qingdao, 266580, Shandong, China
| | - Wenmiao Chen
- Department of Science, Texas A&M University at Qatar, Education City, P.O. Box 23874, Doha, Qatar.
| | - Sirong Yu
- School of Materials Science and Engineering, China University of Petroleum (East China), Qingdao, 266580, Shandong, China.
| | - Yanli Chen
- School of Materials Science and Engineering, China University of Petroleum (East China), Qingdao, 266580, Shandong, China.
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Wei S, Kamali AR. Green conversion of waste PET into magnetic Ni 0·4Fe 2·6O 4/(Fe,Ni)@carbon nanostructure for adsorption and separation of dyes from aqueous media. CHEMOSPHERE 2023; 342:140172. [PMID: 37714476 DOI: 10.1016/j.chemosphere.2023.140172] [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: 05/22/2023] [Revised: 08/20/2023] [Accepted: 09/12/2023] [Indexed: 09/17/2023]
Abstract
A nanostructured core-shell composite (Ni0·4Fe2·6O4/(Fe,Ni)@carbon, NFC) comprising magnetic nano-cores encapsulated with graphitic shells (≈80 wt%) is prepared by facile and clean mechanochemical-molten salt processing approach using waste PET; providing a specific surface area of 201.9 m2 g-1, well-developed mesopores, and ferromagnetic behavior characterized by the coercivity value of 149 Oe. NFC is utilized as a high-performance adsorbent for the removal of organic dyes from their aqueous solutions. Moreover, the magnetic performance of NFC enables the facile collection of the exhausted adsorbent out of the purified water. Performances of NFC for the removal of crystal violet dye (CV), methyl orange (MO) and rhodamine B (Rh B) from their aqueous solutions are systematically investigated under different environmental conditions including the adsorbent dosage and dye concentration, as well as the solution pH and temperature, where an impressive CV removal capacity of 201.6-243.8 mg g-1 is recorded for a wide pH range of 2-10. Mechanism and kinetics involved in the adsorption process are investigated by studying the adsorption isotherms and thermodynamics. The dye adsorption of the nanocomposite material is confirmed to follow the pseudo-second-order kinetic model combined with the Langmuir isotherm model, exhibiting an excellent spontaneous and exothermic monolayer adsorption capacity of around 153 mg g-1 (for MO) for the fresh adsorbent and around 89 mg g-1 after three adsorption-regeneration cycles.
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Affiliation(s)
- Shuhui Wei
- Energy and Environmental Materials Research Centre (E(2)MC), School of Metallurgy, Northeastern University, Shenyang, 110819, China
| | - Ali Reza Kamali
- Energy and Environmental Materials Research Centre (E(2)MC), School of Metallurgy, Northeastern University, Shenyang, 110819, China.
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Melinte V, Culica ME, Chibac-Scutaru AL. Cellulose acetate/polyurethane blend as support matrix with high optical transparency and improved mechanical properties for photocatalyst CeO 2 nanoparticles immobilization. Int J Biol Macromol 2023; 251:126210. [PMID: 37579894 DOI: 10.1016/j.ijbiomac.2023.126210] [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: 03/29/2023] [Revised: 07/03/2023] [Accepted: 08/05/2023] [Indexed: 08/16/2023]
Abstract
Advanced manufacturing technologies for efficient catalytic materials have triggered the rational design of catalysts as well as extensive investigation into preparative methodologies. Herein, we report the preparation of new versatile cellulose acetate/polyurethane (CA/PU) blends for efficient immobilization of CeO2 nanoparticles, the appropriate composition of polymer mixture being chosen after rigorous analysis (SEM, FTIR, optical, mechanical). The band gap energy for hybrid films ranged between 3.02 eV and 2.05 eV, the lowest value being measured for the film with Co-doped CeO2 NPs (B3 film). The best results in photodegradation of methylene blue under visible-light irradiation was attained after 50 min for B3 film (rate constant k = 45.34× 10-3 min-1), while the total mineralization of MB in the same conditions as evaluated by HPLC-ESI MS and TOC analyses was achieved after 90 min. Effect of co-ions (SO42-, Cl- or NO3-) on photocatalytic performance was studied, and scavenger tests were used to identify the active species involved in the photocatalytic mechanism. Also, the photocatalytic efficiency of B3 sample was tested for rhodamine B, metronidazole and 4-nitrophenol degradation. Evaluation of the stability and integrity of hybrid film after 5 catalysis cycles reveal that the photocatalytic potential is retained with no substantial structural changes.
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Affiliation(s)
- Violeta Melinte
- Polyaddition and Photochemistry Department, Petru Poni Institute of Macromolecular Chemistry, 41 A Grigore Ghica Voda Alley, 700487, Iasi, Romania.
| | - Madalina Elena Culica
- Polyaddition and Photochemistry Department, Petru Poni Institute of Macromolecular Chemistry, 41 A Grigore Ghica Voda Alley, 700487, Iasi, Romania
| | - Andreea Laura Chibac-Scutaru
- Polyaddition and Photochemistry Department, Petru Poni Institute of Macromolecular Chemistry, 41 A Grigore Ghica Voda Alley, 700487, Iasi, Romania.
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11
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Tang X, Tang R, Zhou Z, Li L, Deng Y, Gong D, Yang L, Song T, He M. Facile design of surface electric field driven tourmaline/g-C 3N 4 layered stacked photocatalysts with enhanced photocatalytic activity for antibiotic removal. CHEMOSPHERE 2023:139185. [PMID: 37302491 DOI: 10.1016/j.chemosphere.2023.139185] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/24/2023] [Revised: 06/08/2023] [Accepted: 06/09/2023] [Indexed: 06/13/2023]
Abstract
In the field of photocatalysis, Graphitic carbon nitride (g-C3N4) has received a lot of attention for its superior functionality and benefits. However, it suffers from the fatal defect of low charge separation efficiency, which is well addressed by tourmaline's self-contained surface electric field. In this work, tourmaline/g-C3N4 (T/CN) composites were successfully synthesized. Due to its surface electric field effect, tourmaline and g-C3N4 are stacked on top of each other. It makes its specific surface area increase greatly and more active sites are exposed. Additionally, the rapid separation of photogenerated electron holes under the action of electric field promotes the photocatalytic reaction. T/CN exhibited excellent photocatalytic performance under visible light, with 99.9% Tetracycline (TC 50 mg L-1) removal after 30 min. Compared to tourmaline (0.0160 min-1) and g-C3N4 (0.0230 min-1), the T/CN composite's reaction rate constant (0.1754 min-1) was 11.0 and 7.6 times higher. A series of characterizations also determined the structural properties and catalytic performance of the T/CN composites, which were found to have a larger specific surface area, narrower band gap, and higher charge separation efficiency compared to the monomer. In addition, the toxicity of tetracycline intermediates and their degradative pathways were investigated, and the toxicity of the intermediates was found to be reduced. Given the quenching experiments and active substance determination, it was also found that h+ and ·O2- play a major role. This work provides more inspiration for photocatalytic material performance research as well as green innovation for environmental management.
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Affiliation(s)
- Xiangwei Tang
- College of Environment & Ecology, Hunan Agricultural University, Changsha, 410128, China
| | - Rongdi Tang
- College of Environment & Ecology, Hunan Agricultural University, Changsha, 410128, China; College of Environmental Science and Engineering, Hunan University, Changsha, 410082, China.
| | - Zhanpeng Zhou
- College of Environment & Ecology, Hunan Agricultural University, Changsha, 410128, China
| | - Ling Li
- College of Environment & Ecology, Hunan Agricultural University, Changsha, 410128, China
| | - Yaocheng Deng
- College of Environment & Ecology, Hunan Agricultural University, Changsha, 410128, China.
| | - Daoxin Gong
- College of Environment & Ecology, Hunan Agricultural University, Changsha, 410128, China.
| | - Lihua Yang
- College of Environment & Ecology, Hunan Agricultural University, Changsha, 410128, China
| | - Tianwei Song
- College of Environment & Ecology, Hunan Agricultural University, Changsha, 410128, China
| | - Mingxuan He
- College of Environment & Ecology, Hunan Agricultural University, Changsha, 410128, China
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12
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Yuan Z, Jiang Z. Applications of BiOX in the Photocatalytic Reactions. Molecules 2023; 28:4400. [PMID: 37298876 PMCID: PMC10254493 DOI: 10.3390/molecules28114400] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2023] [Revised: 05/25/2023] [Accepted: 05/26/2023] [Indexed: 06/12/2023] Open
Abstract
BiOX (X = Cl, Br, I) families are a kind of new type of photocatalysts, which have attracted the attention of more and more researchers. The suitable band gaps and their convenient tunability via the change of X elements enable BiOX to adapt to many photocatalytic reactions. In addition, because of their characteristics of the unique layered structure and indirect bandgap semiconductor, BiOX exhibits excellent separation efficiency of photogenerated electrons and holes. Therefore, BiOX could usually demonstrate fine activity in many photocatalytic reactions. In this review, we will present the various applications and modification strategies of BiOX in photocatalytic reactions. Finally, based on a good understanding of the above issues, we will propose the future directions and feasibilities of the reasonable design of modification strategies of BiOX to obtain better photocatalytic activity toward various photocatalytic applications.
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Affiliation(s)
| | - Zaiyong Jiang
- School of Chemistry & Chemical Engineering and Environmental Engineering, Weifang University, Weifang 261061, China
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13
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Nazir A, Huo P, Wang H, Weiqiang Z, Wan Y. A review on plasmonic-based heterojunction photocatalysts for degradation of organic pollutants in wastewater. JOURNAL OF MATERIALS SCIENCE 2023; 58:6474-6515. [PMID: 37065680 PMCID: PMC10039801 DOI: 10.1007/s10853-023-08391-w] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/22/2022] [Accepted: 03/12/2023] [Indexed: 06/19/2023]
Abstract
UNLABELLED Organic pollutants in wastewater are the biggest problem facing the world today due to population growth, rapid increase in industrialization, urbanization, and technological advancement. There have been numerous attempts to use conventional wastewater treatment techniques to address the issue of worldwide water contamination. However, conventional wastewater treatment has a number of shortcomings, including high operating costs, low efficiency, difficult preparation, fast recombination of charge carriers, generation of secondary waste, and limited light absorption. Therefore, plasmonic-based heterojunction photocatalysts have attracted much attention as a promising method to reduce organic pollutant problems in water due to their excellent efficiency, low operating cost, ease of fabrication, and environmental friendliness. In addition, plasmonic-based heterojunction photocatalysts contain a local surface plasmon resonance that enhances the performance of photocatalysts by improving light absorption and separation of photoexcited charge carriers. This review summarizes the major plasmonic effects in photocatalysts, including hot electron, local field effect, and photothermal effect, and explains the plasmonic-based heterojunction photocatalysts with five junction systems for the degradation of pollutants. Recent work on the development of plasmonic-based heterojunction photocatalysts for the degradation of various organic pollutants in wastewater is also discussed. Lastly, the conclusions and challenges are briefly described and the direction of future development of heterojunction photocatalysts with plasmonic materials is explored. This review could serve as a guide for the understanding, investigation, and construction of plasmonic-based heterojunction photocatalysts for various organic pollutants degradation. GRAPHICAL ABSTRACT Herein, the plasmonic effects in photocatalysts, such as hot electrons, local field effect, and photothermal effect, as well as the plasmonic-based heterojunction photocatalysts with five junction systems for the degradation of pollutants are explained. Recent work on plasmonic-based heterojunction photocatalysts for the degradation of various organic pollutants in wastewater such as dyes, pesticides, phenols, and antibiotics is discussed. Challenges and future developments are also described.
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Affiliation(s)
- Ahsan Nazir
- Institute of Green Chemistry and Chemical Technology, School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang, 212013 China
- School of Materials Science and Engineering, Jiangsu University, Zhenjiang, 212013 China
| | - Pengwei Huo
- Institute of Green Chemistry and Chemical Technology, School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang, 212013 China
| | - Huijie Wang
- Institute of Green Chemistry and Chemical Technology, School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang, 212013 China
| | - Zhou Weiqiang
- Institute of Green Chemistry and Chemical Technology, School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang, 212013 China
| | - Yang Wan
- Institute of Green Chemistry and Chemical Technology, School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang, 212013 China
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14
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Liane Ücker C, San Martins Rodrigues F, de Gouveia Cantoneiro R, Goetzke V, Ceretta Moreira E, Meneghetti Ferrer M, Wienke Raubach C, Cava S. The superior photocatalytic performance of loofah sponges impregnated with Nb2O5. J Photochem Photobiol A Chem 2023. [DOI: 10.1016/j.jphotochem.2023.114694] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/19/2023]
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15
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Construction of Fe/N/C nano-clusters anchored on porous diatomite for efficient removal of norfloxacin via the adsorption-PMS activation. Sep Purif Technol 2023. [DOI: 10.1016/j.seppur.2023.123127] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
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16
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Abdelrahman EA, Hegazey R, Ismail SH, El-Feky HH, Khedr AM, Khairy M, Ammar AM. Facile synthesis and characterization of β-cobalt hydroxide/hydrohausmannite/ramsdellitee/spertiniite and tenorite/cobalt manganese oxide/manganese oxide as novel nanocomposites for efficient photocatalytic degradation of methylene blue dye. ARAB J CHEM 2022. [DOI: 10.1016/j.arabjc.2022.104372] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022] Open
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17
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Effects of Erbium Incorporation on Structural, Surface Morphology, and Degradation of Methylene Blue Dye of Magnesium Oxide Nanoparticles. J Inorg Organomet Polym Mater 2022. [DOI: 10.1007/s10904-022-02482-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
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18
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Akkari M, Bardaoui A, Djebbi MA, Amara ABH, Chtourou R. Hydrothermal synthesis of Ag-doped ZnO/sepiolite nanostructured material for enhanced photocatalytic activity. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2022; 29:67159-67169. [PMID: 35522414 DOI: 10.1007/s11356-022-20539-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/25/2022] [Accepted: 04/26/2022] [Indexed: 06/14/2023]
Abstract
This work is devoted to the development of Ag-ZnO/sepiolite photocatalysts as novel nanostructured materials by the immobilization of Ag-doped ZnO on the surface of fibrous clay. Herein, innovative Ag-ZnO/sepiolite photocatalysts were successfully prepared through a simple hydrothermal route using diverse Ag dopant concentrations (2 and 5%). Structural, morphological, and optical properties of the obtained photocatalysts were characterized by XRD, TEM, MEB, and DRS-UV-Vis spectroscopy. The results confirmed that Ag-doped ZnO nanoparticles with a diameter of 10-30 nm are homogeneously distributed on the sepiolite fibers' surface. The silver dopant was effectively incorporated into the zinc oxide, leading to a slight distortion of the hexagonal wurtzite structure and a reduction of the bandgap energy with increased silver doping. The photocatalytic activity towards the degradation of methylene blue (MB) dye was analyzed for all the samples under UV-Vis light. Compared to ZnO alone and undoped ZnO/SEP, the Ag-ZnO/SEP5% nanostructured materials exhibited a significantly improved photocatalytic activity, with full decolorization after 4 h of UV-Vis irradiation (60 W). The photocatalysis of organic pollutants matched well with a pseudo-first-order kinetic. The enhanced photocatalytic activity was ascribed to the low bandgap energy (3 eV), the reduction of the recombination of electron hole, and the sepiolite support.
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Affiliation(s)
- Marwa Akkari
- Laboratory of Nanomaterials and Systems for Renewable Energies (LaNSER), Research and Technology Center of Energy, Technopôle Borj-Cedria, Hammam-Lif, Tunis, Tunisia.
- LR Ressource Matériaux et Ecosystème, Faculty of Sciences of Bizerte, University of Carthage, 7021, Zarzouna, Tunisia.
| | - Afrah Bardaoui
- Laboratory of Nanomaterials and Systems for Renewable Energies (LaNSER), Research and Technology Center of Energy, Technopôle Borj-Cedria, Hammam-Lif, Tunis, Tunisia
| | - Mohamed Amine Djebbi
- LR Ressource Matériaux et Ecosystème, Faculty of Sciences of Bizerte, University of Carthage, 7021, Zarzouna, Tunisia
| | - Abdesslem Ben Haj Amara
- LR Ressource Matériaux et Ecosystème, Faculty of Sciences of Bizerte, University of Carthage, 7021, Zarzouna, Tunisia
| | - Radhouane Chtourou
- Laboratory of Nanomaterials and Systems for Renewable Energies (LaNSER), Research and Technology Center of Energy, Technopôle Borj-Cedria, Hammam-Lif, Tunis, Tunisia
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19
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Yaashikaa PR, Kumar PS. Fabrication and characterization of magnetic nanomaterials for the removal of toxic pollutants from water environment: A review. CHEMOSPHERE 2022; 303:135067. [PMID: 35623434 DOI: 10.1016/j.chemosphere.2022.135067] [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: 03/28/2022] [Revised: 05/11/2022] [Accepted: 05/20/2022] [Indexed: 06/15/2023]
Abstract
The success of any sustainable growth represents an advancement of novel approaches and new methodologies for managing any ecological concern. Magnetic nanoparticles have gained recent interest owing to their versatile properties such as controlled size, shape, quantum and surface effect, etc, and outcome in wastewater treatment and pollutant removal. Developments have progressed in synthesizing magnetic nanoparticles with the required size, shape and morphology, surface and chemical composition. Magnetic nanoparticles are target specific and inexpensive compared to conventional treatment techniques. This review insight into the synthesis of magnetic nanoparticles using physical, chemical, and biological methods. The biological method of synthesizing magnetic nanoparticles serves to be cost-effective, green process, and eco-friendly for various applications. Characterization studies of synthesized nanoparticles using TEM, XRD, SARS, SANS, DLS, etc are discussed in detail. Magnetic nanoparticles are widely utilized in recent research for removing organic and inorganic contaminants. It was found that the magnetic nanosorption approach together with redox reactions proves to be an effective and flexible mechanism for the removal of pollutants from waste effluents.
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Affiliation(s)
- P R Yaashikaa
- Department of Biotechnology, Saveetha School of Engineering, SIMATS, Chennai, 602105, India
| | - P Senthil Kumar
- Department of Chemical Engineering, Sri Sivasubramaniya Nadar College of Engineering, Chennai, 603110, India; Centre of Excellence in Water Research (CEWAR), Sri Sivasubramaniya Nadar College of Engineering, Chennai, 603110, India.
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20
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Mineral-Supported Photocatalysts: A Review of Materials, Mechanisms and Environmental Applications. ENERGIES 2022. [DOI: 10.3390/en15155607] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
Although they are of significant importance for environmental applications, the industrialization of photocatalytic techniques still faces many difficulties, and the most urgent concern is cost control. Natural minerals possess abundant chemical inertia and cost-efficiency, which is suitable for hybridizing with various effective photocatalysts. The use of natural minerals in photocatalytic systems can not only significantly decrease the pure photocatalyst dosage but can also produce a favorable synergistic effect between photocatalyst and mineral substrate. This review article discusses the current progress regarding the use of various mineral classes in photocatalytic applications. Owing to their unique structures, large surface area, and negatively charged surface, silicate minerals could enhance the adsorption capacity, reduce particle aggregation, and promote photogenerated electron-hole pair separation for hybrid photocatalysts. Moreover, controlling the morphology and structure properties of these materials could have a great influence on their light-harvesting ability and photocatalytic activity. Composed of silica and alumina or magnesia, some silicate minerals possess unique orderly organized porous or layered structures, which are proper templates to modify the photocatalyst framework. The non-silicate minerals (referred to carbonate and carbon-based minerals, sulfate, and sulfide minerals and other special minerals) can function not only as catalyst supports but also as photocatalysts after special modification due to their unique chemical formula and impurities. The dye-sensitized minerals, as another natural mineral application in photocatalysis, are proved to be superior photocatalysts for hydrogen evolution and wastewater treatment. This work aims to provide a complete research overview of the mineral-supported photocatalysts and summarizes the common synergistic effects between different mineral substrates and photocatalysts as well as to inspire more possibilities for natural mineral application in photocatalysis.
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21
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Photocatalytic Inactivation of Bacillus subtilis Spores by Natural Sphalerite with Persulfate under Visible Light Irradiation. COATINGS 2022. [DOI: 10.3390/coatings12040528] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
Bacterial spores are highly resistant to be inactivated by conventional water disinfection methods. In this study, the inactivation efficiency and mechanisms of Bacillus subtitles (B. subtilis) spores by natural sphalerite (NS) with persulfate (PS) under visible light (Vis) irradiation were investigated for the first time. The NS was composed of ZnS doped with trace amounts of metal ions, including As, Fe, Cd, and Mn. The results showed that 7 log of B. subtilis spores could be completely inactivated within 5 h in the Vis/NS/PS photocatalytic system, and the inactivation efficiency was about four and seven times higher than that of the NS/PS system and the Vis/PS system, respectively. The photo-generated electrons are generated by the excitation of NS under the illumination activated PS to form PS radicals (∙SO4−) and hydroxyl radicals (∙OH), which are the main active species for spore inactivation. Mechanism studies further showed that spore inactivation was related to physiological responses, including the increase in intracellular reactive oxygen species, the change of induced antioxidant enzyme activity, and the change of total protein. Furthermore, the dynamic changes of cells during spore inactivation were observed by SEM. These results not only clarify the relationship between the cell physiological stress response and inactivation mechanism of spores, but also reveal the interaction between minerals and PS under Vis, which provides technical methods for the inactivation of bacterial spores in the field of water disinfection.
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22
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Xu C, Yang G, Li J, Zhang S, Fang Y, Peng F, Zhang S, Qiu R. Efficient purification of tetracycline wastewater by activated persulfate with heterogeneous Co-V bimetallic oxides. J Colloid Interface Sci 2022; 619:188-197. [PMID: 35395537 DOI: 10.1016/j.jcis.2022.03.126] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2021] [Revised: 03/24/2022] [Accepted: 03/27/2022] [Indexed: 12/26/2022]
Abstract
The persistence and wide dispersion of antibiotics have a severe impact on the ecological environment. Developing an effective method with universal applicability to remove pollutants is pretty necessary. Herein, a bimetallic oxides (Co3V2O8) heterogeneous material was successfully prepared and used to activate the persulfate (PS) for purification of tetracycline (TC) wastewater. By exploring the reaction conditions and influencing factors, the removal rate of 50 mg⋅L-1 TC reached 87.1% by Co3V2O8/PS system, and the reaction rate constant was up to 0.0271 min-1. As a highly efficient catalyst for the activation of PS, Co3V2O8/PS system produces radicals of SO4•-, •OH, •O2- and 1O2 in the reaction process due to the Co(II) and V(IV) exchange electrons with S2O82- and O2. Simultaneously, the internal electron exchange occurs between Co(II)/Co(III) and V(IV)/V(V), which stabilizes the content of Co(II) and V(IV). This work provides a novel activator for PS activation to degrade contaminants and contributes to a better understanding of the PS activation mechanism by transition compound.
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Affiliation(s)
- Chuanyi Xu
- Key Laboratory for Biobased Materials and Energy of Ministry of Education, College of Materials and Energy, South China Agricultural University, Guangzhou 510642, China
| | - Guanrong Yang
- Key Laboratory for Biobased Materials and Energy of Ministry of Education, College of Materials and Energy, South China Agricultural University, Guangzhou 510642, China
| | - Jie Li
- Key Laboratory for Biobased Materials and Energy of Ministry of Education, College of Materials and Energy, South China Agricultural University, Guangzhou 510642, China
| | - Shanqing Zhang
- Centre for Clean Environment and Energy and School of Environment and Science, Griffith University, Gold Coast, QLD 4222, Australia
| | - Yueping Fang
- Key Laboratory for Biobased Materials and Energy of Ministry of Education, College of Materials and Energy, South China Agricultural University, Guangzhou 510642, China
| | - Feng Peng
- School of Chemistry and Chemical Engineering, Guangzhou University, Guangzhou 510006, China
| | - Shengsen Zhang
- Key Laboratory for Biobased Materials and Energy of Ministry of Education, College of Materials and Energy, South China Agricultural University, Guangzhou 510642, China.
| | - Rongliang Qiu
- Guangdong Laboratory for Lingnan Modern Agriculture, College of Natural Resources and Environment, South China Agricultural University, Guangzhou 510642, China
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Wang Y, Wang J, Ding Z, Wang W, Song J, Li P, Liang J, Fan Q. Light Promotes the Immobilization of U(VI) by Ferrihydrite. Molecules 2022; 27:molecules27061859. [PMID: 35335223 PMCID: PMC8950992 DOI: 10.3390/molecules27061859] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2022] [Revised: 03/02/2022] [Accepted: 03/10/2022] [Indexed: 11/16/2022] Open
Abstract
The environmental behaviors of uranium closely depend on its interaction with natural minerals. Ferrihydrite widely distributed in nature is considered as one main natural media that is able to change the geochemical behaviors of various elements. However, the semiconductor properties of ferrihydrite and its impacts on the environmental fate of elements are sometimes ignored. The present study systematically clarified the photocatalysis of U(VI) on ferrihydrite under anaerobic and aerobic conditions, respectively. Ferrihydrite showed excellent photoelectric response. Under anaerobic conditions, U(VI) was converted to U(IV) by light-irradiated ferrihydrite, in the form of UO2+x (x < 0.25), where •O2− was the dominant reactive reductive species. At pH 5.0, ~50% of U(VI) was removed after light irradiation for 2 h, while 100% U(VI) was eliminated at pH 6.0. The presence of methanol accelerated the reduction of U(VI). Under aerobic conditions, the light illumination on ferrihydrite also led to an obvious but slower removal of U(VI). The removal of U(VI) increased from ~25% to 70% as the pH increased from 5.0 to 6.0. The generation of H2O2 under aerobic conditions led to the formation of UO4•xH2O precipitates on ferrihydrite. Therefore, it is proved that light irradiation on ferrihydrite significantly changed the species of U(VI) and promoted the removal of uranium both under anaerobic and aerobic conditions.
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Affiliation(s)
- Yun Wang
- Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou 730000, China; (Y.W.); (J.W.); (Z.D.); (W.W.); (J.S.); (J.L.); (Q.F.)
- Key Laboratory of Strategic Mineral Resources of the Upper Yellow River, Ministry of Natural Resources, Lanzhou 730000, China
- Key Laboratory of Petroleum Resources, Lanzhou 730000, China
| | - Jingjing Wang
- Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou 730000, China; (Y.W.); (J.W.); (Z.D.); (W.W.); (J.S.); (J.L.); (Q.F.)
- Key Laboratory of Petroleum Resources, Lanzhou 730000, China
| | - Zhe Ding
- Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou 730000, China; (Y.W.); (J.W.); (Z.D.); (W.W.); (J.S.); (J.L.); (Q.F.)
- Key Laboratory of Strategic Mineral Resources of the Upper Yellow River, Ministry of Natural Resources, Lanzhou 730000, China
- Key Laboratory of Petroleum Resources, Lanzhou 730000, China
| | - Wei Wang
- Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou 730000, China; (Y.W.); (J.W.); (Z.D.); (W.W.); (J.S.); (J.L.); (Q.F.)
- Key Laboratory of Strategic Mineral Resources of the Upper Yellow River, Ministry of Natural Resources, Lanzhou 730000, China
| | - Jiayu Song
- Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou 730000, China; (Y.W.); (J.W.); (Z.D.); (W.W.); (J.S.); (J.L.); (Q.F.)
- Key Laboratory of Strategic Mineral Resources of the Upper Yellow River, Ministry of Natural Resources, Lanzhou 730000, China
| | - Ping Li
- Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou 730000, China; (Y.W.); (J.W.); (Z.D.); (W.W.); (J.S.); (J.L.); (Q.F.)
- Key Laboratory of Strategic Mineral Resources of the Upper Yellow River, Ministry of Natural Resources, Lanzhou 730000, China
- Key Laboratory of Petroleum Resources, Lanzhou 730000, China
- Correspondence:
| | - Jianjun Liang
- Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou 730000, China; (Y.W.); (J.W.); (Z.D.); (W.W.); (J.S.); (J.L.); (Q.F.)
- Key Laboratory of Strategic Mineral Resources of the Upper Yellow River, Ministry of Natural Resources, Lanzhou 730000, China
- Key Laboratory of Petroleum Resources, Lanzhou 730000, China
| | - Qiaohui Fan
- Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou 730000, China; (Y.W.); (J.W.); (Z.D.); (W.W.); (J.S.); (J.L.); (Q.F.)
- Key Laboratory of Strategic Mineral Resources of the Upper Yellow River, Ministry of Natural Resources, Lanzhou 730000, China
- Key Laboratory of Petroleum Resources, Lanzhou 730000, China
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