1
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Ouyang WT, Ji HT, Liu YY, Li T, Jiang YF, Lu YH, Jiang J, He WM. TEMPO/O 2 Synergistically Mediated BiBrO-Photocatalyzed Decarboxylative Phosphorylation of N-Arylglycines. Chemistry 2024; 30:e202304234. [PMID: 38644695 DOI: 10.1002/chem.202304234] [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: 12/19/2023] [Revised: 04/14/2024] [Accepted: 04/17/2024] [Indexed: 04/23/2024]
Abstract
With both TEMPO and O2 (in air) as the homogeneous redox mediators, BiBrO as the heterogeneous semiconductor photocatalyst, the first example of semi-heterogeneous photocatalytic decarboxylative phosphorylation of N-arylglycines with diarylphosphine oxides was established. A series of α-amino phosphinoxides were efficiently synthesized.
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Affiliation(s)
- Wen-Tao Ouyang
- School of Chemistry and Chemical Engineering, University of South, China, Hengyang, 421001, China
| | - Hong-Tao Ji
- School of Chemistry and Chemical Engineering, University of South, China, Hengyang, 421001, China
| | - Yuan-Yuan Liu
- School of Chemistry and Chemical Engineering, University of South, China, Hengyang, 421001, China
| | - Ting Li
- School of Chemistry and Chemical Engineering, University of South, China, Hengyang, 421001, China
| | - Yan-Fang Jiang
- School of Chemistry and Chemical Engineering, University of South, China, Hengyang, 421001, China
| | - Yu-Han Lu
- School of Chemistry and Chemical Engineering, University of South, China, Hengyang, 421001, China
| | - Jun Jiang
- School of Chemistry and Chemical Engineering, University of South, China, Hengyang, 421001, China
| | - Wei-Min He
- School of Chemistry and Chemical Engineering, University of South, China, Hengyang, 421001, China
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2
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Kaur A, Kaur M, Vyas P. Abatement of microbes and organic pollutants using heterostructural nanocomposites of rice straw CQDs with substituted strontium ferrite. CHEMOSPHERE 2024; 359:142310. [PMID: 38761820 DOI: 10.1016/j.chemosphere.2024.142310] [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: 05/04/2023] [Revised: 03/16/2024] [Accepted: 05/09/2024] [Indexed: 05/20/2024]
Abstract
Sustainable use of agricultural waste still remains a challenging task. Herein, we used rice straw as a carbon precursor to prepare carbon quantum dots (CQDs) for photocatalytic applications. Nanocomposites of CQDs with Ti4+ and Mg2+ substituted strontium ferrite (Sr0·4Ti0·4Mg0·2Fe2O4.4) nanoparticles (NPs) in varying w:w ratio was synthesized by ultrasonication method. The successful formation of nanocomposites was confirmed by various microscopic and spectroscopic techniques. The photocatalytic and antibacterial activity of NPs, CQDs and nanocomposites was comparatively evaluated using tetracycline hydrochloride, azure B, Staphylococcus aureus and Escherichia coli as model pollutants. The CQDs-Sr0.4Ti0·4Mg0·2Fe2O4.4 nanocomposite with a w:w ratio of 2:1 showed excellent photocatalytic and antibacterial activity, with the degradation and inactivation efficiency ranging from 97.1% to 99.0% in presence of visible light. The increased specific surface area (117.2 m2/g), and reduction in band gap (2.48 eV-2.09 eV) and decreased photoluminescence intensity of nanocomposites all corroborated these results. The impacting experimental parameters such as catalyst dose, pH and contact time were also examined. Quenching experiments confirmed that hydroxyl radicals (HO∙) radicals and holes (h+) played a vital role in the degradation of pollutants. The kinetics of photodegradation was explained by using the Langmuir-Hinshelwood model. Box-Behnken statistical modelling was used to optimize photocatalytic parameters. Results indicated that the nanocomposite of CQDs with Sr0·4Ti0·4Mg0·2Fe2O4.4 can serve as a promising photocatalyst for the removal of pollutants and microbes.
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Affiliation(s)
- Ajaypal Kaur
- Department of Chemistry, Punjab Agricultural University, Ludhiana, 141004, India
| | - Manpreet Kaur
- Department of Chemistry, Punjab Agricultural University, Ludhiana, 141004, India.
| | - Pratibha Vyas
- Department of Microbiology, Punjab Agricultural University, Ludhiana-141004, India
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3
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Zhao X, Liu Y, Guo J, Chang N, Wang H. NCQDs active sites as effective collectors of charge carriers towards enhanced photocatalytic activity of porous Co 3O 4. ENVIRONMENTAL TECHNOLOGY 2024; 45:1412-1419. [PMID: 36379221 DOI: 10.1080/09593330.2022.2143292] [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: 07/14/2022] [Accepted: 10/06/2022] [Indexed: 06/16/2023]
Abstract
In this work, different proportions of N-doped carbon quantum dots/porous Co3O4 (NCQDs/p-Co3O4) NCQDs/Co3O4 composite photocatalysts were prepared by a simple self-assembly method. It was demonstrated by a series of characterizations that 50% NCQDs/Co3O4 has a good visible light response and low electrochemical impedance. The photocatalytic degradation of TC was investigated by the 50% NCQDs/p-Co3O4 composite photocatalyst, and the results showed that the degradation effect of TC reached 81.2% within 120 min. The higher photocatalytic activity of 50% NCQDs/p-Co3O4 was analyzed probably because NCQDs can improve the separation efficiency of photogenerated electron-hole pairs and p-Co3O4 can provide a larger specific surface area and thus has more active sites. This study provides a new strategy for improving the photodegradation activity of Co3O4 photocatalysts.
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Affiliation(s)
- Xiaoxu Zhao
- School of Environmental Science and Engineering, Tiangong University, Tianjin, People's Republic of China
| | - Yueqin Liu
- School of Environmental Science and Engineering, Tiangong University, Tianjin, People's Republic of China
| | - Jianfeng Guo
- School of Chemical Engineering and Technology, Tiangong University, Tianjin, People's Republic of China
| | - Na Chang
- School of Chemical Engineering and Technology, Tiangong University, Tianjin, People's Republic of China
- State Key Laboratory of Separation Membranes and Membrane Processes, Tiangong University, Tianjin, People's Republic of China
| | - Haitao Wang
- School of Environmental Science and Engineering, Tiangong University, Tianjin, People's Republic of China
- State Key Laboratory of Separation Membranes and Membrane Processes, Tiangong University, Tianjin, People's Republic of China
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4
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Li X, Chang J, Zhang H, Feng J, Ma J, Bai C, Ren Y. Enhanced photocarrier separation in Br substitution-induced [W (VI)O 6-x] units for highly efficient photocatalytic nitrate reduction under alkaline conditions. JOURNAL OF HAZARDOUS MATERIALS 2024; 462:132683. [PMID: 37832434 DOI: 10.1016/j.jhazmat.2023.132683] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/02/2023] [Revised: 09/14/2023] [Accepted: 09/29/2023] [Indexed: 10/15/2023]
Abstract
Photocatalytic nitrate (NO3-) reduction is considered a promising green and non-polluting technology to solve the nitrate pollution of groundwater and surface water. Herein, a novel Br-substituted Bi2WO6-x ultrathin nanosheets were prepared by a simple hydrothermal method in a strong acid environment containing sixteen alkyl three methyl bromide (CTAB). The catalytic system solves the problems of low carrier separation efficiency, poor performance under alkaline conditions, and a hard-to-activate N = O bond, achieving efficient NO3- removal under alkaline conditions along with high N2 selectivity. It was confirmed that Br-substituted Bi2WO6-x produced the [W(VI)O6-x] units with a strong electron-withdrawing property by changing the polarity of the O-W-O bond. As a result, the effective space charge separation caused by the change of the W valence state and the spontaneous fracture behavior of the N = O bond improved the carriers utilization efficiency and distinctly reduced the reaction energy consumption, synergistically achieving excellent performance.
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Affiliation(s)
- Xiao Li
- College of Material Science and Chemical Engineering, Harbin Engineering University, Harbin 150001, China
| | - Jin Chang
- College of Material Science and Chemical Engineering, Harbin Engineering University, Harbin 150001, China
| | - Hexin Zhang
- College of Material Science and Chemical Engineering, Harbin Engineering University, Harbin 150001, China
| | - Jing Feng
- College of Material Science and Chemical Engineering, Harbin Engineering University, Harbin 150001, China
| | - Jun Ma
- State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin 150090, China
| | - Chengying Bai
- College of Material Science and Chemical Engineering, Harbin Engineering University, Harbin 150001, China.
| | - Yueming Ren
- College of Material Science and Chemical Engineering, Harbin Engineering University, Harbin 150001, China.
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5
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Qi Y, Zhao J, Wang H, Zhang A, Li J, Yan M, Guo T. Shaddock peel-derived N-doped carbon quantum dots coupled with ultrathin BiOBr square nanosheets with boosted visible light response for high-efficiency photodegradation of RhB. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2023; 325:121424. [PMID: 36906054 DOI: 10.1016/j.envpol.2023.121424] [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: 12/06/2022] [Revised: 03/03/2023] [Accepted: 03/08/2023] [Indexed: 06/18/2023]
Abstract
In the present work, we constructed a serials of novel shaddock peel-derived N-doped carbon quantum dots (NCQDs) coupled with BiOBr composites. The result showed that the as-synthesized BiOBr (BOB) was composed of ultrathin square nanosheets and flower-like structure, and NCQDs were uniformly dispersed on the surface of BiOBr. Furthermore, the BOB@NCQDs-5 with optimal NCQDs content displayed the top-flight photodegradation efficiency with ca. 99% of removal rate within 20 min under visible light and possessed excellent recyclability and photostability after 5 cycles. The reason was attributed to relatively large BET surface area, the narrow energy gap, inhibited recombination of charge carriers and excellent photoelectrochemical performances. Meanwhile, the improved photodegradation mechanism and possible reaction pathways were also elucidated in detail. On this basis, the study opens a novel perspective to obtain a highly efficient photocatalyst for practical environment remediation.
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Affiliation(s)
- Yu Qi
- College of Environment Science and Engineering, Taiyuan University of Technology, No. 209 University Street, Jinzhong 030600, Shanxi, PR China
| | - Jinjiang Zhao
- College of Environment Science and Engineering, Taiyuan University of Technology, No. 209 University Street, Jinzhong 030600, Shanxi, PR China
| | - Hongtao Wang
- College of Environment Science and Engineering, Taiyuan University of Technology, No. 209 University Street, Jinzhong 030600, Shanxi, PR China
| | - Aiming Zhang
- Department of Nuclear Environment Science, China Institute for Radiation Protection, No.102 Xuefu Street, Taiyuan 030006, Shanxi, PR China
| | - Jinping Li
- College of Chemistry and Chemical Engineering, Taiyuan University of Technology, 79 Yingze West Street, Taiyuan 030024, Shanxi, PR China; Shanxi Key Laboratory of Gas Energy Efficient and Clean Utilization, No.79 Yingze west street, Taiyuan 030024, Shanxi, PR China
| | - Meifang Yan
- College of Environment Science and Engineering, Taiyuan University of Technology, No. 209 University Street, Jinzhong 030600, Shanxi, PR China
| | - Tianyu Guo
- College of Environment Science and Engineering, Taiyuan University of Technology, No. 209 University Street, Jinzhong 030600, Shanxi, PR China; Department of Nuclear Environment Science, China Institute for Radiation Protection, No.102 Xuefu Street, Taiyuan 030006, Shanxi, PR China; Shanxi Key Laboratory of Gas Energy Efficient and Clean Utilization, No.79 Yingze west street, Taiyuan 030024, Shanxi, PR China.
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6
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Zhang J, Li Z, Lei Q, Zhong D, Ke Y, Liu W, Yang L. Significantly activated persulfate by novel carbon quantum dots-modified N-BiOCl for complete degradation of bisphenol-A under visible light irradiation. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 870:161804. [PMID: 36731546 DOI: 10.1016/j.scitotenv.2023.161804] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/16/2022] [Revised: 01/04/2023] [Accepted: 01/20/2023] [Indexed: 06/18/2023]
Abstract
The practical application of bismuth-based photocatalysts in the field of micropollutant photodegradation is limited due to their weak light absorption and rapid charge recombination. Herein, we have developed a novel carbon quantum dots-modified N-BiOCl (CDs-N-BiOCl) photocatalyst to activate persulfate (PS) for the complete elimination of endocrine-disruptor bisphenol A (BPA) under visible light irradiation. The photoelectric properties characterization shows that N atoms could replace Cl atoms or adsorb on Bi atoms to form local N 1s states in the BiOCl lattice, accompanied by the introduction of doping energy levels that shorten the electron migration distance. Meanwhile, the decorated CDs could effectively accept the photoinduced electrons from N-BiOCl conduction band to facilitate the charge separation. Thus, the 7%CDs-N-BiOCl (7CNB) nanocomposite synergistically activated PS realized rapid and effective degradation of BPA within 20 min (degradation efficiency and mineralization reached 100 % and 66.4 % respectively). Moreover, the 7CNB/PS system displayed favorable adaptability, durability, and interference resistance. Furthermore, the biotoxicity experiments demonstrated that the photodegradation intermediates promoted the growth of Escherichia coli which indicates its eco-friendliness for practical application. Finally, the electron transfer mechanism and the formation of reactive oxygen species in the photodegradation process were interpreted. In short, this work will present a promising strategy for bismuth-based photocatalysts to be used for the efficient treatment of real water bodies under visible light irradiation.
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Affiliation(s)
- Jianqiao Zhang
- Shenzhen International Graduate School, Tsinghua University, Shenzhen 518055, China; Luohu District Urban Management and Comprehensive Law Enforcement Bureau, Shenzhen 518003, China
| | - Zhiyang Li
- State Key Laboratory of Urban Water Resource and Environment, Shenzhen Key Laboratory of Organic Pollution Prevention and Control, School of Civil and Environmental Engineering, Harbin Institute of Technology Shenzhen, Shenzhen 518055, China
| | - Qian Lei
- China Railway NO.1 GROUP Co., LTD., Xi'an 710000, China
| | - Dan Zhong
- State Key Laboratory of Urban Water Resource and Environment, Shenzhen Key Laboratory of Organic Pollution Prevention and Control, School of Civil and Environmental Engineering, Harbin Institute of Technology Shenzhen, Shenzhen 518055, China
| | - YiXin Ke
- State Key Laboratory of Urban Water Resource and Environment, Shenzhen Key Laboratory of Organic Pollution Prevention and Control, School of Civil and Environmental Engineering, Harbin Institute of Technology Shenzhen, Shenzhen 518055, China
| | - WenJie Liu
- State Key Laboratory of Urban Water Resource and Environment, Shenzhen Key Laboratory of Organic Pollution Prevention and Control, School of Civil and Environmental Engineering, Harbin Institute of Technology Shenzhen, Shenzhen 518055, China
| | - Lei Yang
- State Key Laboratory of Urban Water Resource and Environment, Shenzhen Key Laboratory of Organic Pollution Prevention and Control, School of Civil and Environmental Engineering, Harbin Institute of Technology Shenzhen, Shenzhen 518055, China.
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7
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Zhu L, Shen D, Zhang H, Luo KH, Li C. Fabrication of Z-scheme Bi 7O 9I 3/g-C 3N 4 heterojunction modified by carbon quantum dots for synchronous photocatalytic removal of Cr (Ⅵ) and organic pollutants. JOURNAL OF HAZARDOUS MATERIALS 2023; 446:130663. [PMID: 36608584 DOI: 10.1016/j.jhazmat.2022.130663] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/06/2022] [Revised: 12/11/2022] [Accepted: 12/21/2022] [Indexed: 06/17/2023]
Abstract
Chromium(VI) (Cr(VI)), a highly toxic metal ion, generally co-exists with organic pollutants in industrial effluents. The clean and effective technology for water purification is an imperative issue but still a challenging task. A series of Bi7O9I3/g-C3N4 (BOI/CN) composites modified by lignin-derived carbon quantum dots (CQDs) were fabricated by hydrothermal method and applied for synchronous photocatalytic removal of Cr (Ⅵ) and levofloxacin (LEV). With the modification of CQDs in BOI/CN heterojunction, the 0.5-CQD/BOI/CN photocatalyst (0.5% content of CQDs) exhibited stronger light-harvesting capacity, more efficient charge separation, and faster electron transfer. Compared to those of BOI (51.2%), CN (36.8%), and BOI/CN (74.4%), the photoreduction efficiency of Cr(VI) reached up to 100% by 0.5-CQD/BOI/CN under 60 min of light irradiation, together with 94.8% degradation efficiency of LEV. The degradation of LEV was dominantly controlled by active species (•OH and •O2-) identified by electron paramagnetic resonance analysis and free radical trapping experiments. The intermediates of LEV were determined by LC-MS and the possible degradation pathway was speculated in combination with density functional theory calculation, involving defluorination, decarboxylation, quinolone rings opening, and piperazine moieties oxidation reactions. This work provides an advanced strategy for the fabrication of high-efficiency CQDs-based Z-scheme photocatalysts for environmental remediation.
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Affiliation(s)
- Lingli Zhu
- Key Laboratory of Energy Thermal Conversion and Control of Ministry of Education, School of Energy and Environment, Southeast University, Nanjing 210096, PR China
| | - Dekui Shen
- Key Laboratory of Energy Thermal Conversion and Control of Ministry of Education, School of Energy and Environment, Southeast University, Nanjing 210096, PR China.
| | - Huiyan Zhang
- Key Laboratory of Energy Thermal Conversion and Control of Ministry of Education, School of Energy and Environment, Southeast University, Nanjing 210096, PR China.
| | - Kai Hong Luo
- Department of Mechanical Engineering, University College London, London WC1E7JE, UK
| | - Chong Li
- School of Chemical Engineering, Dalian University of Technology, Dalian 116024, Liaoning, PR China
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8
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Li W, Chen Y, Han W, Liang S, Jiao Y, Tian G. ZIF-8 derived hierarchical ZnO@ZnFe2O4 hollow polyhedrons anchored with CdS for efficient photocatalytic CO2 reduction. Sep Purif Technol 2022. [DOI: 10.1016/j.seppur.2022.122970] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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9
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Zhao J, Li C, Du X, Zhu Y, Li S, Liu X, Liang C, Yu Q, Huang L, Yang K. Recent Progress of Carbon Dots for Air Pollutants Detection and Photocatalytic Removal: Synthesis, Modifications, and Applications. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2022; 18:e2200744. [PMID: 36251773 DOI: 10.1002/smll.202200744] [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: 02/03/2022] [Revised: 04/07/2022] [Indexed: 06/16/2023]
Abstract
Rapid industrialization has inevitably led to serious air pollution problems, thus it is urgent to develop detection and treatment technologies for qualitative and quantitative analysis and efficient removal of harmful pollutants. Notably, the employment of functional nanomaterials, in sensing and photocatalytic technologies, is promising to achieve efficient in situ detection and removal of gaseous pollutants. Among them, carbon dots (CDs) have shown significant potential due to their superior properties, such as controllable structures, easy surface modification, adjustable energy band, and excellent electron-transfer capacities. Moreover, their environmentally friendly preparation and efficient capture of solar energy provide a green option for sustainably addressing environmental problems. Here, recent advances in the rational design of CDs-based sensors and photocatalysts are highlighted. An overview of their applications in air pollutants detection and photocatalytic removal is presented, especially the diverse sensing and photocatalytic mechanisms of CDs are discussed. Finally, the challenges and perspectives are also provided, emphasizing the importance of synthetic mechanism investigation and rational design of structures.
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Affiliation(s)
- Jungang Zhao
- College of Environmental Science and Engineering, Hunan University, Changsha, 410082, P. R. China
- Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha, 410082, P. R. China
| | - Caiting Li
- College of Environmental Science and Engineering, Hunan University, Changsha, 410082, P. R. China
- Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha, 410082, P. R. China
| | - Xueyu Du
- College of Environmental Science and Engineering, Hunan University, Changsha, 410082, P. R. China
- Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha, 410082, P. R. China
| | - Youcai Zhu
- College of Environmental Science and Engineering, Hunan University, Changsha, 410082, P. R. China
- Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha, 410082, P. R. China
| | - Shanhong Li
- College of Environmental Science and Engineering, Hunan University, Changsha, 410082, P. R. China
- Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha, 410082, P. R. China
| | - Xuan Liu
- College of Environmental Science and Engineering, Hunan University, Changsha, 410082, P. R. China
- Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha, 410082, P. R. China
| | - Caixia Liang
- College of Environmental Science and Engineering, Hunan University, Changsha, 410082, P. R. China
- Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha, 410082, P. R. China
| | - Qi Yu
- College of Environmental Science and Engineering, Hunan University, Changsha, 410082, P. R. China
- Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha, 410082, P. R. China
| | - Le Huang
- College of Environmental Science and Engineering, Hunan University, Changsha, 410082, P. R. China
- Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha, 410082, P. R. China
| | - Kuang Yang
- College of Environmental Science and Engineering, Hunan University, Changsha, 410082, P. R. China
- Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha, 410082, P. R. China
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10
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One-step synthesis of CDs/BiOBr composite with high exposure of (0 0 1) facet: The effect of triisopropanolamine as the carbon source. INORG CHEM COMMUN 2022. [DOI: 10.1016/j.inoche.2022.109790] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
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11
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Harati M, Jonidi Jafari A, Farzadkia M, Rezaei Kalantary R. Enhanced photocatalytic activity of Fe 2O 3@ZnO decorated CQD for inactivation of Escherichia coli under visible light irradiation. JOURNAL OF ENVIRONMENTAL HEALTH SCIENCE & ENGINEERING 2022; 20:101-112. [PMID: 35669829 PMCID: PMC9163265 DOI: 10.1007/s40201-021-00758-y] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/31/2021] [Accepted: 10/30/2021] [Indexed: 06/15/2023]
Abstract
The present study, magnetically separable Fe2O3@ZnO/CQD nanocomposite was successfully prepared via hydrothermal process and characterized with SEM-EDX, XRD, FTIR, VSM and DRS analysis. The effect of operational parameters includes photocatalyst dosage, photocatalyst type, CQD content and Escherichia coli (E. coli) concentration were evaluated on the E. coli inactivation. The disinfecting ability of nanocomposite components was obtained as Fe2O3@ZnO/CQD> Fe2O3@ZnO> ZnO> Fe2O3> CQD which shows a synergetic effect among different components. The highest E. coli inactivation rate (Kmax=0.7606 min-1) was obtained at photocatalyst dosage of 0.2 g/L and 15% CQD content. The MIC and MBC values value for E. coli were determined 0.1172 mg/mL and 0.4948 respectively that the results tests proved the antibacterial functions of the Fe2O3@ZnO/CQD. Nanocomposite showed the high reusability after 4 consecutive cycles, Kmax decreased from 0.7606 min-1 to 0.6181 min-1. Quenching experiments showed •OH and h+ are the main reactive oxygen species involved in the E. coli inactivation.
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Affiliation(s)
- Motahare Harati
- Department of Environmental Health Engineering, School of Public Health, Iran University of Medical Sciences, Tehran, Iran
| | - Ahmad Jonidi Jafari
- Department of Environmental Health Engineering, School of Public Health, Iran University of Medical Sciences, Tehran, Iran
- Research Center for Environmental Health Technology, Iran University of Medical Sciences, Tehran, Iran
| | - Mahdi Farzadkia
- Department of Environmental Health Engineering, School of Public Health, Iran University of Medical Sciences, Tehran, Iran
- Research Center for Environmental Health Technology, Iran University of Medical Sciences, Tehran, Iran
| | - Roshanak Rezaei Kalantary
- Department of Environmental Health Engineering, School of Public Health, Iran University of Medical Sciences, Tehran, Iran
- Research Center for Environmental Health Technology, Iran University of Medical Sciences, Tehran, Iran
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12
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Meng L, Qu Y, Jing L. Recent advances in BiOBr-based photocatalysts for environmental remediation. CHINESE CHEM LETT 2021. [DOI: 10.1016/j.cclet.2021.03.083] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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13
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Lu C, Wu W, Zhou H. In situ fabrication of BiOBr/BiFeWO6 heterojunction with excellent photodegradation activity under visible light. J SOLID STATE CHEM 2021. [DOI: 10.1016/j.jssc.2021.122465] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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14
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Huang X, Nan Z. Synergetic adsorption and photo-Fenton degradation of methylene blue by ZnFe 2O 4/SiO 2 magnetic double-mesoporous-shelled hollow spheres. ENVIRONMENTAL TECHNOLOGY 2021; 42:3218-3230. [PMID: 32008479 DOI: 10.1080/09593330.2020.1725142] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/01/2019] [Accepted: 01/26/2020] [Indexed: 06/10/2023]
Abstract
Adsorption and Fenton technologies have been widely employed to deal with wastewater. ZnFe2O4/SiO2 magnetic double-mesoporous-shelled hollow spheres (MDSHSs) were feasibly synthesized by a solvothermal method. The as-synthesized MDSHSs show excellent adsorption and selectivity for methylene blue (MB), which it took about only 1 min to reach the adsorption equilibrium. About 50% MB was removed by adsorption, and other 50% MB was degraded under further photo-Fenton process. Effects of experimental conditions on the adsorption and photo-Fenton process were investigated. The mechanisms of MDSHSs formation and photo-Fenton process were proposed. Total organic carbon (TOC) reduction reached as high as 90% with 60 mg/L of MB for 90 min. The experimental results indicated that MDSHSs exhibit a remarkable adsorption and catalytic activity for photo-Fenton process in a wide pH range of 3.3-11.0. Simultaneously, the composite shows an excellent stability and reusability.
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Affiliation(s)
- Xing Huang
- College of Chemistry and Chemical Engineering, Yang Zhou University, Yangzhou, People's Republic of China
| | - Zhaodong Nan
- College of Chemistry and Chemical Engineering, Yang Zhou University, Yangzhou, People's Republic of China
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15
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Tang QY, Yang MJ, Yang SY, Xu YH. Enhanced photocatalytic degradation of glyphosate over 2D CoS/BiOBr heterojunctions under visible light irradiation. JOURNAL OF HAZARDOUS MATERIALS 2021; 407:124798. [PMID: 33348205 DOI: 10.1016/j.jhazmat.2020.124798] [Citation(s) in RCA: 49] [Impact Index Per Article: 16.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/24/2020] [Revised: 12/03/2020] [Accepted: 12/05/2020] [Indexed: 06/12/2023]
Abstract
Two-dimensional (2D) heterojunction photocatalysts can shorten the carrier transfer pathway. In this study, CoS nanoparticles were deposited on the surface of 2D BiOBr nanosheets to fabricate novel ultrathin and intimate-contact 2D heterojunction photocatalysts by a two-step solvothermal route. Under visible-light (λ > 400 nm) irradiation, the apparent reaction rate constant of glyphosate degradation over 10%CoS/BiOBr reaches 0.0074 min-1 (74.7% glyphosate was degraded within 3 h), which is about 5.3 times that of pure BiOBr (0.0014 min-1). The extraordinary photocatalytic performance is attributed to the strong visible-light absorption, the effective charge separation and low charge transfer resistance. The possible photocatalytic reaction process and mechanism over CoS/BiOBr heterojunctions are proposed. Moreover, the 10%CoS/BiOBr sample shows good reusability and stability. This work could provide a new insight for the design and development of 2D heterojunction photocatalysts.
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Affiliation(s)
- Qiang-Yong Tang
- Key Laboratory for Biobased Materials and Energy of Ministry of Education, College of Materials and Energy, South China Agricultural University, Guangzhou 510642, China
| | - Man-Jie Yang
- Key Laboratory for Biobased Materials and Energy of Ministry of Education, College of Materials and Energy, South China Agricultural University, Guangzhou 510642, China
| | - Si-Yuan Yang
- Key Laboratory for Biobased Materials and Energy of Ministry of Education, College of Materials and Energy, South China Agricultural University, Guangzhou 510642, China
| | - Yue-Hua Xu
- Key Laboratory for Biobased Materials and Energy of Ministry of Education, College of Materials and Energy, South China Agricultural University, Guangzhou 510642, China.
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Yu YH, Su JF, Shih Y, Wang J, Wang PY, Huang CP. Hazardous wastes treatment technologies. WATER ENVIRONMENT RESEARCH : A RESEARCH PUBLICATION OF THE WATER ENVIRONMENT FEDERATION 2020; 92:1833-1860. [PMID: 32866315 DOI: 10.1002/wer.1447] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/26/2020] [Revised: 08/24/2020] [Accepted: 08/26/2020] [Indexed: 06/11/2023]
Abstract
A review of the literature published in 2019 on topics related to hazardous waste management in water, soils, sediments, and air. The review covered treatment technologies applying physical, chemical, and biological principles for the remediation of contaminated water, soils, sediments, and air. PRACTICAL POINTS: This report provides a review of technologies for the management of waters, wastewaters, air, sediments, and soils contaminated by various hazardous chemicals including inorganic (e.g., oxyanions, salts, and heavy metals), organic (e.g., halogenated, pharmaceuticals and personal care products, pesticides, and persistent organic chemicals) in three scientific areas of physical, chemical, and biological methods. Physical methods for the management of hazardous wastes including general adsorption, sand filtration, coagulation/flocculation, electrodialysis, electrokinetics, electro-sorption ( capacitive deionization, CDI), membrane (RO, NF, MF), photocatalysis, photoelectrochemical oxidation, sonochemical, non-thermal plasma, supercritical fluid, electrochemical oxidation, and electrochemical reduction processes were reviewed. Chemical methods including ozone-based, hydrogen peroxide-based, potassium permanganate processes, and Fenton and Fenton-like process were reviewed. Biological methods such as aerobic, anoxic, anaerobic, bioreactors, constructed wetlands, soil bioremediation and biofilter processes for the management of hazardous wastes, in mode of consortium and pure culture were reviewed. Case histories were reviewed in four areas including contaminated sediments, contaminated soils, mixed industrial solid wastes and radioactive wastes.
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Affiliation(s)
- Yu Han Yu
- Department of Civil and Environmental Engineering, University of Delaware, Newark, Delaware, USA
| | - Jenn Fang Su
- Department of Chemical and Materials Engineering, Tamkang University, New Taipei City, Taiwan
| | - Yujen Shih
- Graduate Institute of Environmental Essngineering, National Sun yat-sen University, Kaohsiung, Taiwan
| | - Jianmin Wang
- Department of Civil Architectural and Environmental Engineering, Missouri University of Science & Technology, Rolla, Missouri
| | - Po Yen Wang
- Department of Civil Engineering, Widener University, Chester, Pennsylvania, USA
| | - Chin Pao Huang
- Department of Civil and Environmental Engineering, University of Delaware, Newark, Delaware, USA
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Parvari R, Ghorbani-Shahna F, Bahrami A, Azizian S, Assari MJ, Farhadian M. A novel core-shell structured α-Fe2O3/Cu/g-C3N4 nanocomposite for continuous photocatalytic removal of air ethylbenzene under visible light irradiation. J Photochem Photobiol A Chem 2020. [DOI: 10.1016/j.jphotochem.2020.112643] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
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Shen X, Zheng T, Yang J, Shi Z, Xue Q, Liu W, Shan S, Wong MH. Removal of Cr(VI) from Acid Wastewater by BC/ZnFe
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Magnetic Nanocomposite via the Synergy of Absorption‐Photocatalysis. ChemCatChem 2020. [DOI: 10.1002/cctc.202000619] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Xiaofeng Shen
- Key Laboratory of Recycling and Eco-treatment of Waste Biomass of Zhejiang Province School of Environmental and Natural Resources Zhejiang University of Science and Technology Hangzhou 310023 Zhejiang P. R. China
| | - Ting Zheng
- Key Laboratory of Recycling and Eco-treatment of Waste Biomass of Zhejiang Province School of Environmental and Natural Resources Zhejiang University of Science and Technology Hangzhou 310023 Zhejiang P. R. China
| | - Jiayi Yang
- Key Laboratory of Recycling and Eco-treatment of Waste Biomass of Zhejiang Province School of Environmental and Natural Resources Zhejiang University of Science and Technology Hangzhou 310023 Zhejiang P. R. China
| | - Zhun Shi
- College of Environmental Science and Engineering Donghua University Shanghai 201620 P. R. China
| | - Qingquan Xue
- College of Materials Science and Engineering Donghua University Shanghai 201620 P. R. China
| | - Wanpeng Liu
- Key Laboratory of Recycling and Eco-treatment of Waste Biomass of Zhejiang Province School of Environmental and Natural Resources Zhejiang University of Science and Technology Hangzhou 310023 Zhejiang P. R. China
| | - Shengdao Shan
- Key Laboratory of Recycling and Eco-treatment of Waste Biomass of Zhejiang Province School of Environmental and Natural Resources Zhejiang University of Science and Technology Hangzhou 310023 Zhejiang P. R. China
| | - Ming Hung Wong
- Consortium on Health, Environment, Education and Research (CHEER) Department of Science and Environmental Studies Education University of Hong Kong New Territories Hong Kong SAR P. R. China
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A cardiac troponin I photoelectrochemical immunosensor: nitrogen-doped carbon quantum dots–bismuth oxyiodide–flower-like SnO2. Mikrochim Acta 2020; 187:332. [DOI: 10.1007/s00604-020-04302-x] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2020] [Accepted: 04/27/2020] [Indexed: 12/15/2022]
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A new insight on the role of CQDs in driving BiOBr into broader-spectrum-response: Dual function of up-conversion and photosensitization effect. Chem Phys Lett 2020. [DOI: 10.1016/j.cplett.2020.137340] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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