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Sun M, Ali S, Liu C, Dai C, Liu X, Zeng C. Synergistic effect of Fe doping and oxygen vacancy in AgIO 3 for effectively degrading organic pollutants under natural sunlight. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2024; 344:123325. [PMID: 38190871 DOI: 10.1016/j.envpol.2024.123325] [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: 11/08/2023] [Revised: 01/01/2024] [Accepted: 01/06/2024] [Indexed: 01/10/2024]
Abstract
In this work, a series of hydrogenated Fe-doped AgIO3 (FAI-x) catalysts are synthesized for photodegrading diverse azo dyes and antibiotics. Under the irradiation of natural sunlight with a light intensity of ∼60 mW/cm2, the optimum FAI-10 exhibits a considerable rate constant for decomposing methyl orange (MO) of 0.067 min-1, about 7.4 times higher than that of AgIO3 (0.009 min-1), and 24.6% and 83.8% of MO can be decomposed over AgIO3 and FAI-10 after irradiation for 40 min. In the amplification photodegradation experiments with using 0.5 g catalyst and 400 mL MO dye solution (10 mg/L), FAI-10 possesses greatly higher photoreactivity to common semiconductors (ZnO, TiO2, In2O3 and Bi2MoO6), and the photodegradation rates over FAI-10 are 92%. Particularly, the FAI-10 shows superior stability, the activity of which remains unaltered after 8 continuous cycles. Foreign ions and water bodies have slight effect on the activity of FAI-10, but the MO degradation rates are decreased by adjusting pH values, especially when pH = 11 because of the strong electrostatic repulsion between MO and FAI-10. FAI-10 can also effectively decompose another azo dye (rhodamine B (RhB)) and diverse antibiotics (sulflsoxazole (SOX), chlortetracycline hydrochloride (CTC), tetracycline hydrochloride (TC) and ofloxacin (OFX)). The activity enhancement mechanism of FAI-10 has been systemically investigated and is ascribed to the promoted photo-absorption, charge separation and transfer efficiency, and affinity of organic pollutants, owing to the synergistic effect of Fe doping and oxygen vacancy (Ov). The photocatalytic mechanisms and process for decomposing MO are verified and proposed based on radical trapping experiments and liquid chromatography-mass spectrometry (LC-MS). This work opens an avenue for the fabrication of effective photocatalysts toward water purification.
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Affiliation(s)
- Miaofei Sun
- Institute of Advanced Materials, College of Chemistry and Chemical Engineering, Key Lab of Fluorine and Silicon for Energy Materials and Chemistry of Ministry of Education, Jiangxi Normal University, Nanchang, 330022, China
| | - Sajjad Ali
- Energy, Water, and Environment Lab, College of Humanities and Sciences, Prince Sultan University, Riyadh, 11586, Saudi Arabia
| | - Chengyin Liu
- School of Environmental and Material Engineering, Yantai University, Yantai, 264005, Shandong, China
| | - Chunhui Dai
- Jiangxi Key Laboratory for Mass Spectrometry and Instrumentation, East China University of Technology, Nanchang, 330013, China
| | - Xin Liu
- Institute of Advanced Materials, College of Chemistry and Chemical Engineering, Key Lab of Fluorine and Silicon for Energy Materials and Chemistry of Ministry of Education, Jiangxi Normal University, Nanchang, 330022, China
| | - Chao Zeng
- Institute of Advanced Materials, College of Chemistry and Chemical Engineering, Key Lab of Fluorine and Silicon for Energy Materials and Chemistry of Ministry of Education, Jiangxi Normal University, Nanchang, 330022, China.
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Wang C, Liang B, Tian Z, Wang N. Simultaneous preparation of ZnO/rGO composites through Zn(OH) 2 decomposition and graphite oxide reduction and their photocatalytic properties. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2024; 31:4881-4896. [PMID: 38108986 DOI: 10.1007/s11356-023-31459-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/21/2023] [Accepted: 12/06/2023] [Indexed: 12/19/2023]
Abstract
ZnO/reduced graphite oxide (rGO) composites were simultaneously prepared by the thermal reduction of graphite oxide (GO) and the decomposition of Zn(OH)2. The samples were characterized using X-ray diffraction, scanning electron microscopy, transmission electron microscopy, photoluminescence, and DRS. Results indicate that Zn(OH)2 was heated and decomposed into ZnO at a low temperature (200 ℃), while GO was reduced to graphene. The synthesized ZnO particles were small and loaded on graphene layers. The ZnO/rGO photocatalysts exhibited excellent photocatalytic activity against methylene blue (MB) under simulated sunlight irradiation. The ZnO/50% rGO photocatalyst showed the best MB photodegradation rate of up to 99.7% within 3 min. Synchronous reaction provided an efficient, simple, and fast preparation method for ZnO/rGO composites, with an excellent solar photocatalytic degradation ability.
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Affiliation(s)
- Chong Wang
- Rare Metal Intensive Processing Engineering Research Center of Jilin Province, Changchun Normal University, Changchun, 130032, People's Republic of China.
- School of Engineering, Changchun Normal University, Changchun, 130032, People's Republic of China.
| | - Baoyan Liang
- Rare Metal Intensive Processing Engineering Research Center of Jilin Province, Changchun Normal University, Changchun, 130032, People's Republic of China
- Materials and Chemical Engineering School, Zhongyuan University of Technology, Zhengzhou, 450007, People's Republic of China
| | - Zheng Tian
- Rare Metal Intensive Processing Engineering Research Center of Jilin Province, Changchun Normal University, Changchun, 130032, People's Republic of China
- School of Engineering, Changchun Normal University, Changchun, 130032, People's Republic of China
| | - Nan Wang
- Rare Metal Intensive Processing Engineering Research Center of Jilin Province, Changchun Normal University, Changchun, 130032, People's Republic of China
- School of Engineering, Changchun Normal University, Changchun, 130032, People's Republic of China
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3
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Yang J, Chang X, Wei F, Lv Z, Liu H, Li Z, Wu W, Qian L. High performance photocatalyst TiO 2@UiO-66 applied to degradation of methyl orange. DISCOVER NANO 2023; 18:112. [PMID: 37695406 PMCID: PMC10495301 DOI: 10.1186/s11671-023-03894-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/03/2023] [Accepted: 08/31/2023] [Indexed: 09/12/2023]
Abstract
MOFs have considerable adsorption capacity due to their huge specific surface area. They have the characteristics of photocatalysts for their organic ligands can absorb photons and produce electrons. In this paper, the photodegradation properties of TiO2 composites loaded with UiO-66 were investigated for the first time for MO. A series of TiO2@UiO-66 composites with different contents of TiO2 were prepared by a solvothermal method. The photocatalytic degradation of methyl orange (MO) was performed using a high-pressure mercury lamp as the UV light source. The effects of TiO2 loading, catalyst dosage, pH value, and MO concentration were investigated. The results showed that the degradation of MO by TiO2@UiO-66 could reach 97.59% with the addition of only a small amount of TiO2 (5 wt%). TiO2@UiO-66 exhibited significantly enhanced photoelectron transfer capability and inhibited efficient electron-hole recombination compared to pure TiO2 in MO degradation. The composite catalyst indicated good stability and reusability when they were recycled three times, and the photocatalytic reaction efficiencies were 92.54%, 88.76%, and 86.90%. The results provide a new option to design stable, high-efficiency MOF-based photocatalysts.
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Affiliation(s)
- Jingyi Yang
- School of Nuclear Science and Technology, Lanzhou University, Lanzhou, 73000, People's Republic of China
| | - Xue Chang
- School of Nuclear Science and Technology, Lanzhou University, Lanzhou, 73000, People's Republic of China
| | - Fang Wei
- School of Nuclear Science and Technology, Lanzhou University, Lanzhou, 73000, People's Republic of China
| | - Zixiao Lv
- School of Nuclear Science and Technology, Lanzhou University, Lanzhou, 73000, People's Republic of China
| | - Huiling Liu
- School of Nuclear Science and Technology, Lanzhou University, Lanzhou, 73000, People's Republic of China
| | - Zhan Li
- School of Nuclear Science and Technology, Lanzhou University, Lanzhou, 73000, People's Republic of China.
- Frontiers Science Center for Rare Isotopes, Lanzhou University, Lanzhou, 730000, China.
| | - Wangsuo Wu
- School of Nuclear Science and Technology, Lanzhou University, Lanzhou, 73000, People's Republic of China
- Key Laboratory of Special Function Materials and Structure Design, Ministry of Education, Lanzhou, 730000, Gansu, China
| | - Lijuan Qian
- School of Nuclear Science and Technology, Lanzhou University, Lanzhou, 73000, People's Republic of China.
- Key Laboratory of Special Function Materials and Structure Design, Ministry of Education, Lanzhou, 730000, Gansu, China.
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4
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Li J, Xie J, Zhang X, Lu E, Cao Y. The Solid-State Synthesis of BiOIO 3 Nanoplates with Boosted Photocatalytic Degradation Ability for Organic Contaminants. Molecules 2023; 28:molecules28093681. [PMID: 37175089 PMCID: PMC10180272 DOI: 10.3390/molecules28093681] [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: 03/21/2023] [Revised: 04/04/2023] [Accepted: 04/17/2023] [Indexed: 05/15/2023] Open
Abstract
BiOIO3 exhibits excellent oxidation capacity in the photocatalytic degradation of contaminants thanks to its unique polarized electric and internal electrostatic field. However, the synthetic method of BiOIO3 nanomaterials is mainly focused on hydrothermal technology, owing to its high energy consumption and time-consuming nature. In this work, a BiOIO3 nanosheet was prepared by a simple solid-state chemical reaction, which was identified by XRD, EDS, XPS, and HRTEM. Benefiting from the strong oxidation ability of the valence band maximum, the distinctive layer structure, and the promoted generation of ·O2-, the BiOIO3 nanosheet exhibits excellent photo-degradation activity for methyl orange (MO) and its apparent rate constant is 0.2179 min-1, which is about 3.02, 8.60, and 10.26 times higher than that of P25, BiOCl, and Bi2O2CO3, respectively. Interestingly, the BiOIO3 nanosheet also has good photocatalytic degradation performance for phenolic compounds; in particular, the degradation rate of BPA can reach 96.5% after 16 min, mainly due to hydroxylation reaction.
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Affiliation(s)
- Jia Li
- State Key Laboratory of Chemistry and Utilization of Carbon Based Energy Resources, College of Chemistry, Xinjiang University, Urumqi 830046, China
| | - Jing Xie
- State Key Laboratory of Chemistry and Utilization of Carbon Based Energy Resources, College of Chemistry, Xinjiang University, Urumqi 830046, China
| | - Xiaojing Zhang
- State Key Laboratory of Chemistry and Utilization of Carbon Based Energy Resources, College of Chemistry, Xinjiang University, Urumqi 830046, China
| | - Enhui Lu
- State Key Laboratory of Chemistry and Utilization of Carbon Based Energy Resources, College of Chemistry, Xinjiang University, Urumqi 830046, China
| | - Yali Cao
- State Key Laboratory of Chemistry and Utilization of Carbon Based Energy Resources, College of Chemistry, Xinjiang University, Urumqi 830046, China
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Tesfahunegn BA, Kleinberg MN, Powell CD, Arnusch CJ. A Laser-Induced Graphene-Titanium(IV) Oxide Composite for Adsorption Enhanced Photodegradation of Methyl Orange. NANOMATERIALS (BASEL, SWITZERLAND) 2023; 13:947. [PMID: 36903825 PMCID: PMC10005721 DOI: 10.3390/nano13050947] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/06/2023] [Revised: 02/23/2023] [Accepted: 02/27/2023] [Indexed: 06/18/2023]
Abstract
Numerous treatment methods such as biological digestion, chemical oxidation, and coagulation have been used to treat organic micropollutants. However, such wastewater treatment methods can be either inefficient, expensive, or environmentally unsound. Here, we embedded TiO2 nanoparticles in laser-induced graphene (LIG) and obtained a highly efficient photocatalyst composite with pollutant adsorption properties. TiO2 was added to LIG and lased to form a mixture of rutile and anatase TiO2 with a decreased band gap (2.90 ± 0.06 eV). The LIG/TiO2 composite adsorption and photodegradation properties were tested in solutions of a model pollutant, methyl orange (MO), and compared to the individual and mixed components. The adsorption capacity of the LIG/TiO2 composite was 92 mg/g using 80 mg/L MO, and together the adsorption and photocatalytic degradation resulted in 92.8% MO removal in 10 min. Adsorption enhanced photodegradation, and a synergy factor of 2.57 was seen. Understanding how LIG can modify metal oxide catalysts and how adsorption can enhance photocatalysis might lead to more effective pollutant removal and offer alternative treatment methods for polluted water.
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Yang T, Liu X, Zeng Z, Wang X, Zhang P, Feng B, Tian K, Qing T. Efficient and recyclable degradation of organic dye pollutants by CeO 2@ZIF-8 nanozyme-based non-photocatalytic system. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2023; 316:120643. [PMID: 36372366 DOI: 10.1016/j.envpol.2022.120643] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/28/2022] [Revised: 11/06/2022] [Accepted: 11/09/2022] [Indexed: 06/16/2023]
Abstract
Advanced oxidation processes-based catalysis system as the most typical pollutant degradation technology always suffer from poor durability and photo-dependent. Inspired by the fact that some nanomaterials exhibit catalytic properties closer to natural enzymes, a high peroxidase-like activity and stability CeO2@ZIF-8 nanozyme was synthesized in this study for non-photodegradation of dyes pollution. Multiple characterization techniques were applied to prove the successful synthesis of the nanozyme. The influence of different parameters on the catalytic degradation of organic dye by nanozyme was investigated. This nanozyme achieved a maximum degradation efficiency of 99.81% for methyl orange and maintained its catalytic performance in repeated experiments. Possible degradation intermediates and pathways for methyl orange were then proposed. In addition, the CeO2@ZIF-8 loaded starch/agarose films were prepared for the portable and recyclable remediation of real dye wastewater, which maintained more than 80% degradation efficiency after 5 successive cycles. These results suggested that nanozyme based non-photocatalytic system is a potential catalyst for dye degradation and it opens a new avenue to develop high-performance and recyclable catalysts for pollutant remediation.
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Affiliation(s)
- Tianhui Yang
- College of Environment and Resources, Xiangtan University, Xiangtan, 411105, Hunan, China
| | - Xiaofeng Liu
- Hunan Institute of Advanced Sensing and Information Technology, Xiangtan University, Xiangtan, 411105, China
| | - Zihang Zeng
- College of Environment and Resources, Xiangtan University, Xiangtan, 411105, Hunan, China
| | - Xujun Wang
- College of Environment and Resources, Xiangtan University, Xiangtan, 411105, Hunan, China
| | - Peng Zhang
- College of Environment and Resources, Xiangtan University, Xiangtan, 411105, Hunan, China
| | - Bo Feng
- College of Environment and Resources, Xiangtan University, Xiangtan, 411105, Hunan, China
| | - Ke Tian
- College of Environment and Resources, Xiangtan University, Xiangtan, 411105, Hunan, China
| | - Taiping Qing
- College of Environment and Resources, Xiangtan University, Xiangtan, 411105, Hunan, China.
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7
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Din MI, Khalid R, Hussain Z, Arshad M, Khan SA. A critical review on application of organic, inorganic and hybrid nanophotocatalytic assemblies for photocatalysis of methyl orange dye in aqueous medium. REV CHEM ENG 2022. [DOI: 10.1515/revce-2022-0026] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Abstract
Methyl orange (MO) is a highly carcinogenic and harmful contaminant, which has been extensively reported for its detrimental impact on human and aquatic life. The photodegradation of MO into less toxic products has gained much attention over the past few decades. Herein we have reviewed the recent advancement in designing of nanomaterials (NMs) stabilized on different fabricating assemblies and their application in photocatalysis of MO dye. These photocatalytic systems possess various advantages and disadvantages. Graphene-based supported materials on different NMs are highly reported photocatalysts for photocatalysis of MO dye. Recent advancement, parameters affecting photocatalytic studies, kinetics and photocatalytic mechanism of MO have been thoroughly explained in this review. Future outcomes are also provided for extending the development of scientific research in this field.
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Affiliation(s)
| | - Rida Khalid
- School of Chemistry , University of Punjab , Lahore , 54590 , Pakistan
| | - Zaib Hussain
- School of Chemistry , University of Punjab , Lahore , 54590 , Pakistan
| | - Muhammad Arshad
- Institute of Chemistry , The Islamia University of Bahawalpur, Baghdad-ul-Jadeed Campus , Bahawalpur , 63100 , Pakistan
| | - Safyan A. Khan
- Center of Research Excellence in Nanotechnology , King Fahd University of Petroleum & Minerals , Dhahran , 31261 , Saudi Arabia
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8
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Chaudhuri S, Wu CM, Gebeyehu Motora K. Highly efficient solar-light-driven self-floatable WO2.72@Fe3O4 immobilized cellulose nanofiber aerogel/polypropylene Janus membrane for interfacial photocatalysis. J Photochem Photobiol A Chem 2022. [DOI: 10.1016/j.jphotochem.2022.114525] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
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9
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Fabrication of electrospun polyamide–weathered basalt nano-composite as a non-conventional membrane for basic and acid dye removal. Polym Bull (Berl) 2022. [DOI: 10.1007/s00289-022-04459-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
Abstract
In this study, an adsorptive electrospun polyamide membrane (ESPA) and electrospun polyamide–weathered basalt composite membrane (ESPA-WB) were prepared by an electrospinning process at room temperature. Hence, the WB structure was built as a polymeric membrane separation film in combination with the ESPA matrix as a composite nano-filtration membrane. Then, the ESPA and ESPA-WB membranes were characterized using BET surface area analysis, Fourier transform infrared spectroscopy, X-ray diffraction, and scanning electron microscopy (SEM). To avoid cracks forming during the sintering process, the WB should be added in certain percentages. The microstructures of the prepared membranes were investigated to evaluate their efficiency for basic and acidic dyesʼ removal and their permeation flux. Compared with the ESPA, the ESPA-WB membrane combines the characteristics of WB and ESPA, which greatly enhances the performance of both methylene blue (MB) and methyl orange (MO) dyes removal from synthetic wastewater. The outcomes of this study indicated that the dye uptake in the case of ESPA-WB is higher than that of ESPA, and it decreases with an increase in dye concentrations. The obtained membrane ESPA-WB showed both an excellent anti-dye fouling and a good rejection property for both dyes (i.e. 90% rejection for MB and 74% for MO) with no sign of contamination by the applied dyes. It was found that the structure of the ESPA-WB membrane contains a large number of several adsorption sites which leads to an increase in the removal rate of dyes. Hence, this study demonstrated a non-conventional strategy to prepare an effective adsorptive nano-composite membrane that can be applied as a highly recyclable one for the removal of organic dyes.
Graphic abstract
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10
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Construction of CuBi2O4/BiOBr/Biochar Z-Scheme Heterojunction for Degradation of Gaseous Benzene Under Visible Light. Catal Letters 2022. [DOI: 10.1007/s10562-022-04071-7] [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]
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11
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Huang Y, Chen J, Fu G, Zhang C, Qiu H. A new stationary phase based on porous graphene for capillary gas chromatography. SEPARATION SCIENCE PLUS 2022. [DOI: 10.1002/sscp.202200054] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Yanni Huang
- Xinjiang Uygur Autonomous Region Fiber Quality Monitoring Center Urumqi P. R. China
- College of Chemistry and Chemical Engineering Xinjiang Normal University Urumqi P. R. China
| | - Jia Chen
- CAS Key Laboratory of Chemistry of Northwestern Plant Resources and Key Laboratory for Natural Medicine of Gansu Province Lanzhou Institute of Chemical Physics Chinese Academy of Sciences Lanzhou P. R. China
| | - Gafang Fu
- College of Chemistry and Chemical Engineering Xinjiang Normal University Urumqi P. R. China
| | - Chi Zhang
- CAS Key Laboratory of Chemistry of Northwestern Plant Resources and Key Laboratory for Natural Medicine of Gansu Province Lanzhou Institute of Chemical Physics Chinese Academy of Sciences Lanzhou P. R. China
| | - Hongdeng Qiu
- CAS Key Laboratory of Chemistry of Northwestern Plant Resources and Key Laboratory for Natural Medicine of Gansu Province Lanzhou Institute of Chemical Physics Chinese Academy of Sciences Lanzhou P. R. China
- College of Chemistry and Chemical Engineering Xinjiang Normal University Urumqi P. R. China
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12
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Siddique F, Gonzalez-Cortes S, Mirzaei A, Xiao T, Rafiq MA, Zhang X. Solution combustion synthesis: the relevant metrics for producing advanced and nanostructured photocatalysts. NANOSCALE 2022; 14:11806-11868. [PMID: 35920714 DOI: 10.1039/d2nr02714c] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
The current developments and progress in energy and environment-related areas pay special attention to the fabrication of advanced nanomaterials via green and sustainable paths to accomplish chemical circularity. The design and preparation methods of photocatalysts play a prime role in determining the structural, surface characteristics and optoelectronic properties of the final products. The solution combustion synthesis (SCS) technique is a relatively novel, cost-effective, and efficient method for the bulk production of nanostructured materials. SCS-fabricated metal oxides are of great technological importance in photocatalytic, environmental and energy applications. To date, the SCS route has been employed to produce a large variety of solid materials such as metals, sulfides, carbides, nitrides and single or complex metal oxides. This review intends to provide a holistic perspective of the different steps involved in the chemistry of SCS of advanced photocatalysts, and pursues several SCS metrics that influence their photocatalytic performances to establish a feasible approach to design advanced photocatalysts. The study highlights the fundamentals of SCS and the importance of various combustion parameters in the characteristics of the fabricated photocatalysts. Consequently, this work deals with the design of a concise framework to link the fine adjustment of SCS parameters for the development of efficient metal oxide photocatalysts for energy and environmental applications.
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Affiliation(s)
- Fizza Siddique
- School of Science, Minzu University of China, Beijing, 100081, People's Republic of China.
- Department of Physics and Applied Mathematics, Pakistan Institute of Engineering and Applied Sciences, Nilore, Islamabad 45650, Pakistan
| | - Sergio Gonzalez-Cortes
- Inorganic Chemistry Laboratory, Department of Chemistry, University of Oxford, South Parks Road, Oxford OX1 3QR, UK.
| | - Amir Mirzaei
- Institut National de la Recherche Scientifique, Centre Énergie, Matériaux et Télécommunications, 1650 Boulevard Lionel-Boulet, Varennes, Québec J3X 1P7, Canada
| | - Tiancun Xiao
- Inorganic Chemistry Laboratory, Department of Chemistry, University of Oxford, South Parks Road, Oxford OX1 3QR, UK.
| | - M A Rafiq
- Department of Physics and Applied Mathematics, Pakistan Institute of Engineering and Applied Sciences, Nilore, Islamabad 45650, Pakistan
| | - Xiaoming Zhang
- School of Science, Minzu University of China, Beijing, 100081, People's Republic of China.
- Optoelectronics Research Center, Minzu University of China, Beijing, 100081, People's Republic of China
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Dayana Priyadharshini S, Manikandan S, Kiruthiga R, Rednam U, Babu PS, Subbaiya R, Karmegam N, Kim W, Govarthanan M. Graphene oxide-based nanomaterials for the treatment of pollutants in the aquatic environment: Recent trends and perspectives - A review. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2022; 306:119377. [PMID: 35490997 DOI: 10.1016/j.envpol.2022.119377] [Citation(s) in RCA: 19] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/19/2022] [Revised: 03/29/2022] [Accepted: 04/25/2022] [Indexed: 06/14/2023]
Abstract
Graphene oxide can be used to store energy, as electrodes and purify industrial and domestic wastewater as photocatalysts and adsorbents because of its remarkable thermal, electrical, and chemical capabilities. Toward understanding graphene oxide (GO) based nanomaterials considering the background factors, the present review study investigated their characteristics, preparation methods, and characterization processes. The removal of contaminants from wastewater has recently been a focus of attention for materials based on GO. Progress in GO synthesis and surface modification has shown that they can be used to immobilize enzymes. It is possible to immobilize enzymes with varying characteristics on graphene-oxide-based substrates without sacrificing their functioning, thus developing a new environmental remediation platform utilizing nano biocatalysts. GO doping and co-doping with a variety of heterogeneous semiconductor-based metal oxides were included in a brief strategy for boosting GO efficiency. A high band-gap material was also explored as a possibility for immobilization, which shifts the absorption threshold to the visible range and increases photoactivity. For water treatment applications, graphene-based nanomaterials were used in Fenton reactions, photocatalysis, ozonation, photo electrocatalysis, photo-Fenton, and a combination of photon-Fenton and photocatalysis. Nanoparticles made from GO improved the efficiency of composite materials when used for their intended applications. As a result of the analysis, prospects and improvements are clear, especially when it comes to scaling up GO-based wastewater treatment technologies.
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Affiliation(s)
| | - S Manikandan
- Department of Biotechnology, Saveetha School of Engineering, Saveetha Institute of Medical and Technical Sciences (SIMATS), Saveetha Nagar, Thandalam, Chennai - 602 105, Tamil Nadu, India
| | - R Kiruthiga
- Instituto de Investigaciónes Científicas y Tecnológicas (IDICTEC), Universidad de Atacama, Copayapu 485, Copiapo, Chile
| | - Udayabhaskar Rednam
- Instituto de Investigaciónes Científicas y Tecnológicas (IDICTEC), Universidad de Atacama, Copayapu 485, Copiapo, Chile
| | - P Suresh Babu
- Department of Biotechnology, Saveetha School of Engineering, Saveetha Institute of Medical and Technical Sciences (SIMATS), Saveetha Nagar, Thandalam, Chennai - 602 105, Tamil Nadu, India; Faculty of Pharmaceutical Sciences, UCSI University, 56000 Cheras, Kuala Lumpur, Malaysia
| | - R Subbaiya
- Department of Biological Sciences, School of Mathematics and Natural Sciences, The Copperbelt University, Riverside, Jambo Drive, P O Box 21692, Kitwe, Zambia
| | - N Karmegam
- Department of Botany, Government Arts College (Autonomous), Salem, 636 007, Tamil Nadu, India
| | - Woong Kim
- Department of Environmental Engineering, Kyungpook National University, Daegu, 41566, Republic of Korea
| | - M Govarthanan
- Department of Environmental Engineering, Kyungpook National University, Daegu, 41566, Republic of Korea.
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14
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Liu S, Wu D, Hu J, Zhao L, Zhao L, Yang M, Feng Q. Electrospun flexible core-sheath PAN/PU/β-CD@Ag nanofiber membrane decorated with ZnO: enhance the practical ability of semiconductor photocatalyst. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2022; 29:39638-39648. [PMID: 35107732 DOI: 10.1007/s11356-022-18928-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/25/2021] [Accepted: 01/24/2022] [Indexed: 06/14/2023]
Abstract
It is necessary to effectively separate photocatalytic materials from water bodies and reuse catalysts for industrial wastewater treatment. Herein, a novel nanofiber membrane with enhanced light absorption and reusability of photocatalytic materials was prepared. The three-dimensional porous structure of the nanofibers helps the photocatalyst efficiently degrade pollutants. Specifically, a high-efficiency photocatalyst carrier with a nanofiber structure (PAN/PU/β-CD@Ag nanofiber membrane) was prepared by electrospinning and a simple silver plating process, and then ZnO NPs were synthesized in situ on the nanofiber membrane during the hydrothermal process. Under visible-light irradiation, the ZnO-loaded PAN/PU/β-CD@Ag nanofiber membranes exhibited excellent photocatalytic performance for the degradation of methylene blue (MB, 71.5%) and tetracycline hydrochloride (TCH, 70.5%). Additionally, a possible pathway of charge migration in this system was proposed. This design may provide a new idea for the preparation of visible-light photocatalytic nanofiber membranes and their treatments of wastewater containing dyes and hormones.
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Affiliation(s)
- Suo Liu
- School of Textile and Garment, Anhui Polytechnic University, Wuhu, Anhui, 241000, People's Republic of China
| | - Dingsheng Wu
- School of Textile and Garment, Anhui Polytechnic University, Wuhu, Anhui, 241000, People's Republic of China
| | - Jinyan Hu
- School of Environmental and Chemical Engineering, Shanghai University, Shanghai, 200444, People's Republic of China
| | - Lingling Zhao
- School of Textile and Garment, Anhui Polytechnic University, Wuhu, Anhui, 241000, People's Republic of China
| | - Lei Zhao
- School of Textile and Garment, Anhui Polytechnic University, Wuhu, Anhui, 241000, People's Republic of China
| | - Maohuan Yang
- School of Textile and Garment, Anhui Polytechnic University, Wuhu, Anhui, 241000, People's Republic of China
| | - Quan Feng
- School of Textile and Garment, Anhui Polytechnic University, Wuhu, Anhui, 241000, People's Republic of China.
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15
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Luo H, Fu H, Yin H, Lin Q. Carbon materials in persulfate-based advanced oxidation processes: The roles and construction of active sites. JOURNAL OF HAZARDOUS MATERIALS 2022; 426:128044. [PMID: 34933260 DOI: 10.1016/j.jhazmat.2021.128044] [Citation(s) in RCA: 49] [Impact Index Per Article: 24.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/17/2021] [Revised: 11/15/2021] [Accepted: 12/06/2021] [Indexed: 06/14/2023]
Abstract
Many researchers have paid more attention to the progress of carbon materials owing to their advantages, such as high activity, low cost, large surface area, high conductivity and high stability. Carbon materials have been widely used in persulfate-based advanced oxidation processes (PS-AOPs), especially for graphene (G), carbon nanotubes (CNTs) and biochar (BC). Various strategies are applied to promote their activity, however, up to now, the relationship between the structures of carbon materials and their activities in PS-AOPs has not been specifically reviewed. The methods to switch reaction pathway (radical and nonradical pathways) in carbon-persulfate-based AOPs have not been systematically explored. Hereon, this review illustrated the active sites of G, CNTs, BC and other carbon materials, and generalized the modification methods to promote the activity of carbon materials and to switch reaction pathway in PS-AOPs. The roles of carbon materials in PS-AOPs were discussed around reactive oxygen species (ROS) and the structures. ROS are frequently complex in AOPs, but main ROS generation is related to the active sites on carbon materials. The structures of carbon materials (e.g., metal-carbon bonds, the electron-deficient C atoms, unbalanced electron distribution and graphitized structures) play a decisive role in the nonradical pathway. Finally, future breakthroughs of carbon materials were proposed for practical engineering and multi-field application.
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Affiliation(s)
- Haoyu Luo
- Key Laboratory of Ministry of Education on Pollution Control and Ecosystem Restoration in Industry Clusters, Guangdong Provincial Key Laboratory of Solid Wastes Pollution Control and Recycling, School of Environment and Energy, South China University of Technology, Guangzhou 510006, China
| | - Hengyi Fu
- Key Laboratory of Ministry of Education on Pollution Control and Ecosystem Restoration in Industry Clusters, Guangdong Provincial Key Laboratory of Solid Wastes Pollution Control and Recycling, School of Environment and Energy, South China University of Technology, Guangzhou 510006, China; Guangdong Industrial Contaminated Site Remediation Technology and Equipment Engineering Research Center, School of Environmental Science and Engineering, Guangdong University of Technology, Guangzhou 510006, China
| | - Hua Yin
- Key Laboratory of Ministry of Education on Pollution Control and Ecosystem Restoration in Industry Clusters, Guangdong Provincial Key Laboratory of Solid Wastes Pollution Control and Recycling, School of Environment and Energy, South China University of Technology, Guangzhou 510006, China.
| | - Qintie Lin
- Guangdong Industrial Contaminated Site Remediation Technology and Equipment Engineering Research Center, School of Environmental Science and Engineering, Guangdong University of Technology, Guangzhou 510006, China.
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16
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Regulating N content to anchor Fe in Fe-MOFs: Obtaining multiple active sites as efficient photocatalysts. J Taiwan Inst Chem Eng 2022. [DOI: 10.1016/j.jtice.2021.10.033] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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17
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Abdullah FH, Bakar NHHA, Bakar MA. Current advancements on the fabrication, modification, and industrial application of zinc oxide as photocatalyst in the removal of organic and inorganic contaminants in aquatic systems. JOURNAL OF HAZARDOUS MATERIALS 2022; 424:127416. [PMID: 34655867 DOI: 10.1016/j.jhazmat.2021.127416] [Citation(s) in RCA: 30] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/10/2021] [Revised: 09/08/2021] [Accepted: 09/30/2021] [Indexed: 06/13/2023]
Abstract
Industrial wastewaters contain hazardous contaminants that pollute the environment and cause socioeconomic problems, thus demanding the employment of effective remediation procedures such as photocatalysis. Zinc oxide (ZnO) nanomaterials have emerged to be a promising photocatalyst for the removal of pollutants in wastewater owing to their excellent and attractive characteristics. The dynamic tunable features of ZnO allow a wide range of functionalization for enhanced photocatalytic efficiency. The current review summarizes the recent advances in the fabrication, modification, and industrial application of ZnO photocatalyst based on the analysis of the latest studies, including the following aspects: (1) overview on the properties, structures, and features of ZnO, (2) employment of dopants, heterojunction, and immobilization techniques for improved photodegradation performance, (3) applicability of suspended and immobilized photocatalytic systems, (4) application of ZnO hybrids for the removal of various types of hazardous pollutants from different wastewater sources in industries, and (5) potential of bio-inspired ZnO hybrid nanomaterials for photocatalytic applications using renewable and biodegradable resources for greener photocatalytic technologies. In addition, the knowledge gap in this field of work is also highlighted.
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Affiliation(s)
- F H Abdullah
- Nanoscience Research Laboratory, School of Chemical Sciences, Universiti Sains Malaysia, 11800 USM, Penang, Malaysia.
| | - N H H Abu Bakar
- Nanoscience Research Laboratory, School of Chemical Sciences, Universiti Sains Malaysia, 11800 USM, Penang, Malaysia.
| | - M Abu Bakar
- Nanoscience Research Laboratory, School of Chemical Sciences, Universiti Sains Malaysia, 11800 USM, Penang, Malaysia
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18
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Nisar A, Saeed M, Muneer M, Usman M, Khan I. Synthesis and characterization of ZnO decorated reduced graphene oxide (ZnO-rGO) and evaluation of its photocatalytic activity toward photodegradation of methylene blue. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2022; 29:418-430. [PMID: 33745046 DOI: 10.1007/s11356-021-13520-6] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/08/2021] [Accepted: 03/15/2021] [Indexed: 06/12/2023]
Abstract
Photocatalytic treatment is one of the techniques used for the treatment of dyes-contaminated wastewater. It is important to develop an effective visible-light-driven catalyst for the treatment of dyes-contaminated wastewater. This study reports the synthesis of ZnO-reduced graphene oxide catalyst for the degradation of methylene blue. Graphene oxide was prepared by Hammer and Offeman process, while ZnO-rGO (1:1) was prepared by the chemical reduction method. The prepared ZnO-rGO composite was characterized by XRD, TEM, SEM, UV-Vis, DRS, N2 adsorption-desorption, FTIR, and XPS analyses. The photocatalytic activity was evaluated by photodegradation of methylene blue solution under irradiation. It was found that ZnO-rGO is capable of removing the dye from water and achieved the highest dye degradation efficiency of ~99% within 60 min. Furthermore, the ZnO-rGO was recycled in degradation experiments without any loss in its catalytic performance. The reaction kinetics was described in terms of the Langmuir-Hinshelwood mechanism, one of the kinetics mechanisms of surface catalyzed reaction. 36.2 and 13.1 kJ/mol were calculated as the apparent and true activation energy for photodegradation of methylene blue respectively.
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Affiliation(s)
- Asif Nisar
- Department of Chemistry, Government College University Faisalabad, Faisalabad, Pakistan
| | - Muhammad Saeed
- Department of Chemistry, Government College University Faisalabad, Faisalabad, Pakistan.
| | - Majid Muneer
- Department of Chemistry, Government College University Faisalabad, Faisalabad, Pakistan
| | - Muhammad Usman
- Department of Chemistry, Government College University Faisalabad, Faisalabad, Pakistan
| | - Iltaf Khan
- College of Chemical and Materials Engineering, Beijing Institute of Petrochemical Technology, Beijing, China
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19
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Bajpai JS, Barai DP, Bhanvase BA, Pawade VB. Sonochemical preparation and characterization of Sm-doped GO/KSrPO 4 nanocomposite photocatalyst for degradation of methylene blue dye. WATER ENVIRONMENT RESEARCH : A RESEARCH PUBLICATION OF THE WATER ENVIRONMENT FEDERATION 2021; 94:e1682. [PMID: 35043506 DOI: 10.1002/wer.1682] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/01/2021] [Revised: 11/27/2021] [Accepted: 12/18/2021] [Indexed: 06/14/2023]
Abstract
The present work pertains to synthesis of Sm-doped GO/KSrPO4 (GO/KSrPO4 :Sm) nanocomposite using ultrasound-assisted method. Successful decoration of graphene oxide sheets with the KSrPO4 :Sm3+ phosphor was confirmed using analysis techniques including SEM, EDS, UV/visible spectrometry, XRD, and FTIR of the prepared GO/KSrPO4 :Sm nanocomposite. Further, photocatalytic activity of this nanocomposite material was studied by examining degradation of methylene blue (MB) dye from water. The effects of several parameters like concentration of Sm3+ in KSrPO4 :Sm3+ phosphor within the GO/KSrPO4 :Sm nanocomposite photocatalyst, photocatalyst loading, initial dye concentration, pH, and preparation method were evaluated. At a higher concentration of Sm3+ in the photocatalyst (1 mol.%), higher photocatalyst loading (1.5 mg/ml), lesser dye concentration (20 mg/L), and higher pH (11.4), the GO/KSrPO4 :Sm nanocomposite photocatalyst prepared using ultrasound-assisted method showed higher dye removal compared to other conditions. A maximum of 83.35% removal of MB dye was achieved by the use of ultrasonically prepared GO/KSrPO4 :Sm nanocomposite photocatalyst having a concentration of 1 mol.% of Sm3+ in the KSrPO4 :Sm3+ phosphor at a loading of 1.5 mg/ml, initial dye concentration of 20 mg/L, and a pH of 11.4. Rate constant for MB dye degradation using the GO/KSrPO4:Sm nanocomposite photocatalyst synthesized by ultrasonic-assisted method was found to be 0.0053 min-1 . PRACTITIONER POINTS: GO/KSrPO4 :Sm nanocomposite photocatalyst prepared by ultrasonic-assisted method. Higher Sm3+ doping in nanocomposite with the use of ultrasound assisted method showed better performance of photocatalyst. A maximum removal of 83.35% of methylene blue dye was achieved.
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Affiliation(s)
- Jyotsna S Bajpai
- Department of Chemical Engineering, Laxminarayan Institute of Technology, Rashtrasant Tukadoji Maharaj Nagpur University, Nagpur, India
| | - Divya P Barai
- Department of Chemical Engineering, Laxminarayan Institute of Technology, Rashtrasant Tukadoji Maharaj Nagpur University, Nagpur, India
| | - Bharat A Bhanvase
- Department of Chemical Engineering, Laxminarayan Institute of Technology, Rashtrasant Tukadoji Maharaj Nagpur University, Nagpur, India
| | - Vijay B Pawade
- Department of Applied Physics, Laxminarayan Institute of Technology, Rashtrasant Tukadoji Maharaj Nagpur University, Nagpur, India
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20
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Thakre KG, Barai DP, Bhanvase BA. A review of graphene-TiO 2 and graphene-ZnO nanocomposite photocatalysts for wastewater treatment. WATER ENVIRONMENT RESEARCH : A RESEARCH PUBLICATION OF THE WATER ENVIRONMENT FEDERATION 2021; 93:2414-2460. [PMID: 34378264 DOI: 10.1002/wer.1623] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/17/2021] [Revised: 07/29/2021] [Accepted: 08/02/2021] [Indexed: 06/13/2023]
Abstract
Technologies for wastewater remediation have been growing ever since the environmental and health concern is realized. Development of nanomaterials has enabled mankind to have different methods to treat the various kinds of inorganic and organic pollutants present in wastewater from many resources. Among the many materials, semiconductor materials have found many environmental applications due to their outstanding photocatalytic activities. TiO2 and ZnO are more effectively used as photocatalyst or adsorbents in the withdrawal of inorganic as well as organic wastes from the wastewater. On the other hand, graphene is tremendously being investigated for applications in environmental remediation in view of the superior physical, optical, thermal, and electronic properties of graphene nanocomposites. In this work, graphene-TiO2 and graphene-ZnO nanocomposites have been reviewed for photocatalytic wastewater treatment. The various preparation techniques of these nanocomposites have been discussed. Also, different design strategies for graphene-based photocatalyst have been revealed. These nanocomposites exhibit promising applications in most of the water purification processes which are reviewed in this work. Along with this, the development of these nanocomposites using biomass-derived graphene has also been introduced. PRACTITIONER POINTS: Graphene-TiO2 and graphene-ZnO nanocomposites are effective for wastewater treatment through photocatalysis. These nanocomposite photocatalysts have been used in the form of membrane as well as antibacterial agents. Synthetic strategies and design considerations of graphene-based photocatalyst play a major role. Biomass-derived graphene-TiO2 and graphene-ZnO nanocomposites have also found application in wastewater treatment.
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Affiliation(s)
- Kunal G Thakre
- Department of Chemical Engineering, Laxminarayan Institute of Technology, Rashtrasant Tukadoji Maharaj Nagpur University, Nagpur, Maharashtra, India
| | - Divya P Barai
- Department of Chemical Engineering, Laxminarayan Institute of Technology, Rashtrasant Tukadoji Maharaj Nagpur University, Nagpur, Maharashtra, India
| | - Bharat A Bhanvase
- Department of Chemical Engineering, Laxminarayan Institute of Technology, Rashtrasant Tukadoji Maharaj Nagpur University, Nagpur, Maharashtra, India
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21
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Jin X, Tang T, Tao X, Huang L, Xu D. A novel dual-ligand Fe-based MOFs synthesized with dielectric barrier discharge (DBD) plasma as efficient photocatalysts. J Mol Liq 2021. [DOI: 10.1016/j.molliq.2021.117290] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
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22
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Jose A, Pai SDKR, Pinheiro D, Kasinathan K. Visible light photodegradation of organic dyes using electrochemically synthesized MoO 3/ZnO. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2021; 28:52202-52215. [PMID: 34003439 DOI: 10.1007/s11356-021-14311-9] [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: 02/01/2020] [Accepted: 05/03/2021] [Indexed: 06/12/2023]
Abstract
In this study, flake-like MoO3-ZnO composite was prepared using a simple and robust electrochemical setup. The composite was characterized by X-ray diffraction, Fourier transform infrared spectroscopy, scanning electron microscopy, elemental analysis, X-ray photoelectron spectroscopy, thermogravimetric analysis, photoluminescence, zeta potential analysis, and electrochemical impedance study. The modified ZnO shows a remarkable catalytic activity towards the photodegradation of three potentially hazardous dyes, malachite green, crystal violet, and methylene blue. More than 95% of both malachite green and crystal violet degraded within 140 min under visible light irradiation. Scavenger studies reveal that OH· radicals produced by the photo-separated charges on MoO3-ZnO are responsible for the degradation of all three dyes. The photoactive charge carriers show less recombination rate as evidenced by the photoluminescence spectrum due to the interparticle charge migration process. This work suggests a new versatile procedure for the synthesis of MoO3-ZnO composites and establishes its photocatalytic efficacy under visible light with three common pollutant dyes found in wastewater.
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Affiliation(s)
- Ajay Jose
- Department of Chemistry, CHRIST (Deemed to be University), Bangalore, Karnataka, 560029, India
| | | | - Dephan Pinheiro
- Department of Chemistry, CHRIST (Deemed to be University), Bangalore, Karnataka, 560029, India
| | - Karthik Kasinathan
- Department of Chemistry, CHRIST (Deemed to be University), Bangalore, Karnataka, 560029, India
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23
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Rohilla S, Gupta A, Kumar V, Kumari S, Petru M, Amor N, Noman MT, Dalal J. Excellent UV-Light Triggered Photocatalytic Performance of ZnO.SiO 2 Nanocomposite for Water Pollutant Compound Methyl Orange Dye. NANOMATERIALS (BASEL, SWITZERLAND) 2021; 11:2548. [PMID: 34684989 PMCID: PMC8541141 DOI: 10.3390/nano11102548] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/06/2021] [Revised: 09/21/2021] [Accepted: 09/23/2021] [Indexed: 11/17/2022]
Abstract
The photocatalytic activity of eco-friendly zinc oxide doped silica nanocomposites, synthesized via a co-precipitation method followed by heat-treatment at 300, 600, and 900 °C is investigated. The samples have been characterized by employing X-ray diffraction method, and further analyzed using the Rietveld Refinement method. The samples show a space group P63mc with hexagonal structure. The prepared composites are tested for their photocatalytic activities for the degradation of methyl orange-based water pollutants under ultra-violet (UV) irradiation using a 125 W mercury lamp. A systematic analysis of parameters such as the irradiation time, pH value, annealing temperatures, and the concentration of sodium hydroxide impacting the degradation of the methyl orange (MO) is carried out using UV-visible spectroscopy. The ZnO.SiO2 nanocomposite annealed at 300 °C at a pH value of seven shows a maximum photo-degradation ability (~98.1%) towards methyl orange, while the photo-degradation ability of ZnO.SiO2 nanocomposites decreases with annealing temperature (i.e., for 600 and 900 °C) due to the aspect ratio. Moreover, it is seen that with increment in the concentration of the NaOH (i.e., from 1 to 3 g), the photo-degradation of the dye component is enhanced from 20.9 to 53.8%, whereas a reverse trend of degradation ability is observed for higher concentrations.
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Affiliation(s)
- Sunil Rohilla
- Department of Physics, Chaudhary Ranbir Singh University, Jind 126102, India; (S.R.); (S.K.)
| | - Ankita Gupta
- Department of Physics, Adarsh Mahila Mahavidyalaya, Bhiwani 127021, India;
| | - Vibhor Kumar
- Department of Electrical Engineering, Northern Illinois University, Dekalb, IL 60115, USA;
| | - Suman Kumari
- Department of Physics, Chaudhary Ranbir Singh University, Jind 126102, India; (S.R.); (S.K.)
| | - Michal Petru
- Department of Machinery Construction, Institute for Nanomaterials, Advanced Technologies and Innovation, Technical University of Liberec, Studentská 1402/2, 46117 Liberec, Czech Republic; (M.P.); (N.A.)
| | - Nesrine Amor
- Department of Machinery Construction, Institute for Nanomaterials, Advanced Technologies and Innovation, Technical University of Liberec, Studentská 1402/2, 46117 Liberec, Czech Republic; (M.P.); (N.A.)
| | - Muhammad Tayyab Noman
- Department of Machinery Construction, Institute for Nanomaterials, Advanced Technologies and Innovation, Technical University of Liberec, Studentská 1402/2, 46117 Liberec, Czech Republic; (M.P.); (N.A.)
| | - Jasvir Dalal
- Department of Physics, Chaudhary Ranbir Singh University, Jind 126102, India; (S.R.); (S.K.)
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24
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Rodrigues J, Hatami T, Rosa JM, Tambourgi EB. Photocatalytic degradation of Reactive Blue 21 dye using ZnO nanoparticles: experiment, modelling, and sensitivity analysis. ENVIRONMENTAL TECHNOLOGY 2021; 42:3675-3687. [PMID: 32148175 DOI: 10.1080/09593330.2020.1740330] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/09/2019] [Accepted: 02/26/2020] [Indexed: 06/10/2023]
Abstract
This paper presents the photocatalysis, adsorption, and photolysis of C.I. Reactive Blue 21 dye using synthesized zinc oxide nanoparticles. The density, mean particle diameter, surface area, and porosity of the catalyst were 5550 kg/m3, 1.19 × 10-7, 16,830 m2/kg, and 0.08, respectively. The impact of catalyst mass per volume of solution (0.2-1.0 kg/m3) was experimentally investigated in terms of the percentage of dye degradation. Due to the small catalyst porosity, adsorption contributed little to overall degradation. However, the photolysis of the dye was around 12.5%, which occurred predominantly between 0 and 5 min. In the second part of the present study, the photocatalytic degradation of C.I. Reactive Blue 21 was modelled mathematically based on the mass conservation law in the solution and catalyst. The model had two adjustable variables: the convection mass transfer coefficient and the photocatalytic reaction rate constant. The model was solved numerically using the finite difference method and was validated with the experimental data. The validated model was employed to examine the impact of catalyst size and initial pollutant concentration on the photocatalytic degradation.
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Affiliation(s)
- Jorge Rodrigues
- School of Chemical Engineering, University of Campinas, São Paulo, Brazil
| | - Tahmasb Hatami
- School of Chemical Engineering, University of Campinas, São Paulo, Brazil
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25
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Rajput NS, Al Zadjali S, Gutierrez M, Esawi AMK, Al Teneiji M. Synthesis of holey graphene for advanced nanotechnological applications. RSC Adv 2021; 11:27381-27405. [PMID: 35480691 PMCID: PMC9037835 DOI: 10.1039/d1ra05157a] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2021] [Accepted: 07/23/2021] [Indexed: 12/18/2022] Open
Abstract
Holey or porous graphene, a structural derivative of graphene, has attracted immense attention due to its unique properties and potential applications in different branches of science and technology. In this review, the synthesis methods of holey or porous graphene/graphene oxide are systematically summarized and their potential applications in different areas are discussed. The process–structure–applications are explained, which helps relate the synthesis approaches to their corresponding key applications. The review paper is anticipated to benefit the readers in understanding the different synthesis methods of holey graphene, their key parameters to control the pore size distribution, advantages and limitations, and their potential applications in various fields. The review paper presents a systematic understanding of different synthesis routes to obtain holey graphene, its properties, and key applications in different fields. The article also evaluates the current progress and future opportunities of HG.![]()
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Affiliation(s)
- Nitul S Rajput
- Advanced Materials Research Center, Technology Innovation Institute Building B04C Abu Dhabi 9639 United Arab Emirates
| | - Shroq Al Zadjali
- Advanced Materials Research Center, Technology Innovation Institute Building B04C Abu Dhabi 9639 United Arab Emirates
| | - Monserrat Gutierrez
- Advanced Materials Research Center, Technology Innovation Institute Building B04C Abu Dhabi 9639 United Arab Emirates
| | - Amal M K Esawi
- Department of Mechanical Engineering, School of Sciences and Engineering, The American University in Cairo Cairo 11835 Egypt
| | - Mohamed Al Teneiji
- Advanced Materials Research Center, Technology Innovation Institute Building B04C Abu Dhabi 9639 United Arab Emirates
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26
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Qiu JP, Xie HQ, Wang YH, Yu L, Wang FY, Chen HS, Fei ZX, Bian CQ, Mao H, Lian JB. Facile Synthesis of Uniform Mesoporous Nb 2O 5 Micro-Flowers for Enhancing Photodegradation of Methyl Orange. MATERIALS 2021; 14:ma14143783. [PMID: 34300700 PMCID: PMC8303274 DOI: 10.3390/ma14143783] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/01/2021] [Revised: 06/27/2021] [Accepted: 07/03/2021] [Indexed: 11/16/2022]
Abstract
The removal of organic pollutants using green environmental photocatalytic degradation techniques urgently need high-performance catalysts. In this work, a facile one-step hydrothermal technique has been successfully applied to synthesize a Nb2O5 photocatalyst with uniform micro-flower structure for the degradation of methyl orange (MO) under UV irradiation. These nanocatalysts are characterized by transmission and scanning electron microscopies (TEM and SEM), X-ray diffraction (XRD), Brunauer–Emmett–Teller (BET) method, and UV-Vis diffuse reflectance spectroscopy (DRS). It is found that the prepared Nb2O5 micro-flowers presents a good crystal phases and consist of 3D hierarchical nanosheets with 400–500 nm in diameter. The surface area is as large as 48.6 m2 g−1. Importantly, the Nb2O5 micro-flowers exhibit superior catalytic activity up to 99.9% for the photodegradation of MO within 20 mins, which is about 60-fold and 4-fold larger than that of without catalysts (W/O) and commercial TiO2 (P25) sample, respectively. This excellent performance may be attributed to 3D porous structure with abundant catalytic active sites.
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Affiliation(s)
- Jian-Ping Qiu
- Xingzhi College, College of Geography and Environmental Sciences, College of Chemistry and Life Sciences, Zhejiang Normal University, Jinhua 321004, China; (H.-Q.X.); (Y.-H.W.); (F.-Y.W.); (H.-S.C.)
- Correspondence: (J.-P.Q.); (H.M.); (J.-B.L.)
| | - Huan-Qing Xie
- Xingzhi College, College of Geography and Environmental Sciences, College of Chemistry and Life Sciences, Zhejiang Normal University, Jinhua 321004, China; (H.-Q.X.); (Y.-H.W.); (F.-Y.W.); (H.-S.C.)
| | - Ya-Hao Wang
- Xingzhi College, College of Geography and Environmental Sciences, College of Chemistry and Life Sciences, Zhejiang Normal University, Jinhua 321004, China; (H.-Q.X.); (Y.-H.W.); (F.-Y.W.); (H.-S.C.)
| | - Lan Yu
- College of Pharmaceutics, Jinhua Polytechnic, Jinhua 321007, China; (L.Y.); (Z.-X.F.); (C.-Q.B.)
| | - Fang-Yuan Wang
- Xingzhi College, College of Geography and Environmental Sciences, College of Chemistry and Life Sciences, Zhejiang Normal University, Jinhua 321004, China; (H.-Q.X.); (Y.-H.W.); (F.-Y.W.); (H.-S.C.)
| | - Han-Song Chen
- Xingzhi College, College of Geography and Environmental Sciences, College of Chemistry and Life Sciences, Zhejiang Normal University, Jinhua 321004, China; (H.-Q.X.); (Y.-H.W.); (F.-Y.W.); (H.-S.C.)
| | - Zheng-Xin Fei
- College of Pharmaceutics, Jinhua Polytechnic, Jinhua 321007, China; (L.Y.); (Z.-X.F.); (C.-Q.B.)
| | - Chao-Qun Bian
- College of Pharmaceutics, Jinhua Polytechnic, Jinhua 321007, China; (L.Y.); (Z.-X.F.); (C.-Q.B.)
| | - Hui Mao
- College of Pharmaceutics, Jinhua Polytechnic, Jinhua 321007, China; (L.Y.); (Z.-X.F.); (C.-Q.B.)
- Correspondence: (J.-P.Q.); (H.M.); (J.-B.L.)
| | - Jia-Biao Lian
- Institute for Energy Research, Jiangsu University, Zhenjiang 212013, China
- Correspondence: (J.-P.Q.); (H.M.); (J.-B.L.)
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27
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Chen P, Liang Y, Xu Y, Zhao Y, Song S. Synchronous photosensitized degradation of methyl orange and methylene blue in water by visible-light irradiation. J Mol Liq 2021. [DOI: 10.1016/j.molliq.2021.116159] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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28
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Wei X, Akbar MU, Raza A, Li G. A review on bismuth oxyhalide based materials for photocatalysis. NANOSCALE ADVANCES 2021; 3:3353-3372. [PMID: 36133717 PMCID: PMC9418972 DOI: 10.1039/d1na00223f] [Citation(s) in RCA: 32] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/24/2021] [Accepted: 05/01/2021] [Indexed: 05/04/2023]
Abstract
Photocatalytic solar energy transformation is the most encouraging solution to alleviate the environmental crisis and energy scarcity. Bismuth oxyhalide (BiOX) is an emerging class of materials that exhibits photocatalytic properties, such as resilient response to light, which causes enhanced energy conversion (solar energy) owing to their exceptional layered structure and attractive band structure. The present review presents a summary of results from the recent developments on the tuning and design of BiOX-based materials to improve the energy conversion. In particular, the preparation and tuning approaches that have the potential to enhance the photocatalytic behavior of BiOX and some other techniques, such as elemental doping, are addressed, which prevent the rapid recombination of charges, and formation of oxygen vacancies, facilitating an improvement in the photocatalytic reaction. Various frameworks are also presented, displaying the significance of BiOX-based nanocomposites. Finally, the main challenges and opportunities associated with the future progress of BiOX-based materials are presented. This review will provide an extended understanding and offer a preferred direction for the innovative design of BiOX-based materials for environmental and especially energy-based applications.
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Affiliation(s)
- Xuejiao Wei
- School of Chemical Engineering and Materials, Changzhou Institute of Technology Changzhou 213032 China
- State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences Dalian 116023 China
| | - Muhammad Usama Akbar
- Solar Cell Applications Research Lab, Department of Physics, Government College University Lahore Punjab 54000 Pakistan
| | - Ali Raza
- Solar Cell Applications Research Lab, Department of Physics, Government College University Lahore Punjab 54000 Pakistan
| | - Gao Li
- State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences Dalian 116023 China
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Du S, Liu B, Li Z, Tan H, Qi W, Liu T, Qiang S, Zhang T, Song F, Chen X, Chen J, Qiu H, Wu W. A Nanoporous Graphene/Nitrocellulose Membrane Beneficial to Wound Healing. ACS APPLIED BIO MATERIALS 2021; 4:4522-4531. [PMID: 35006788 DOI: 10.1021/acsabm.1c00261] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Adequate treatment of skin wounds is vital to health. Nitrocellulose bandage as a traditional wound dressing is widely used for wound healing, but its limited air permeability and poor sterilization need to be improved for enhancing the actual efficacy. Here, nanoporous graphene (NPG) is used to mix into nitrocellulose for preparing a composite membrane, which exhibits a moderate transmission rate of water vapor, excellent toughness performance, and good biocompatibility. Moreover, the membrane shows an excellent broad-spectrum antibacterial property (>98%, Escherichia coli; >90%, Staphylococcus aureus) and can reduce the risk of microbial infection for the body after trauma. Importantly, after using the nanoporous graphene/nitrocellulose membrane, the wound closure percentage reaches 93.03 ± 1.08% at 7 days after the trauma, and the degree of skin tissue recovery is also improved significantly. Therefore, this study develops a highly efficient wound healing dressing, which is expected to be used directly in clinics.
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Affiliation(s)
- Shaobo Du
- School of Nuclear Science and Technology, Lanzhou University, Lanzhou 730000, China.,CAS Key Laboratory of Chemistry of Northwestern Plant Resources and Key Laboratory for Natural Medicine of Gansu Province, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, China.,School of Stomatology, Lanzhou University, Lanzhou 730000, China
| | - Bin Liu
- School of Nuclear Science and Technology, Lanzhou University, Lanzhou 730000, China.,School of Stomatology, Lanzhou University, Lanzhou 730000, China
| | - Zhan Li
- Frontier Science Center for Rare Isotopes, Lanzhou University, Lanzhou 730000, China
| | - Hongxin Tan
- CAS Key Laboratory of Chemistry of Northwestern Plant Resources and Key Laboratory for Natural Medicine of Gansu Province, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, China
| | - Wei Qi
- Hubei Key Laboratory of Bioinorganic Chemistry & Materia Medica, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan 430000, China
| | - Tianqi Liu
- CAS Key Laboratory of Chemistry of Northwestern Plant Resources and Key Laboratory for Natural Medicine of Gansu Province, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, China
| | - Shirong Qiang
- School of Basic Medical Sciences, Lanzhou University, Lanzhou 730000, China
| | - Taofeng Zhang
- School of Nuclear Science and Technology, Lanzhou University, Lanzhou 730000, China.,School of Stomatology, Lanzhou University, Lanzhou 730000, China
| | - Fuxiang Song
- School of Nuclear Science and Technology, Lanzhou University, Lanzhou 730000, China.,School of Stomatology, Lanzhou University, Lanzhou 730000, China
| | - Xiujuan Chen
- School of Stomatology, Lanzhou University, Lanzhou 730000, China
| | - Jia Chen
- CAS Key Laboratory of Chemistry of Northwestern Plant Resources and Key Laboratory for Natural Medicine of Gansu Province, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, China
| | - Hongdeng Qiu
- CAS Key Laboratory of Chemistry of Northwestern Plant Resources and Key Laboratory for Natural Medicine of Gansu Province, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, China.,College of Chemistry, Zhengzhou University, Zhengzhou 450001, China
| | - Wangsuo Wu
- School of Nuclear Science and Technology, Lanzhou University, Lanzhou 730000, China
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30
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Zhao Z, Fang F, Wu J, Tong X, Zhou Y, Lv Z, Wang J, Sawtell D. Interfacial Chemical Effects of Amorphous Zinc Oxide/Graphene. MATERIALS 2021; 14:ma14102481. [PMID: 34064837 PMCID: PMC8150847 DOI: 10.3390/ma14102481] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/05/2021] [Revised: 05/08/2021] [Accepted: 05/10/2021] [Indexed: 11/16/2022]
Abstract
Research on the preparation and performance of graphene composite materials has become a hotspot due to the excellent electrical and mechanical properties of graphene. Among such composite materials, zinc oxide/graphene (ZnO/graphene) composite films are an active research topic. Therefore, in this study, we used the vacuum thermal evaporation technique at different evaporation voltages to fabricate an amorphous ZnO/graphene composite film on a flexible polyethylene terephthalate (PET). The amorphous ZnO/graphene composite film inherited the great transparency of the graphene within the visible spectrum. Moreover, its electrical properties were better than those of pure ZnO but less than those of graphene, which is not consistent with the original theoretical research (wherein the performance of the composite films was better than that of ZnO film and slightly lower than that of graphene). For example, the bulk free charge carrier concentrations of the composite films (0.13, 1.36, and 0.47 × 1018 cm−3 corresponding to composite films with thicknesses of 40, 75, and 160 nm) were remarkably lower than that of the bare graphene (964 × 1018 cm−3) and better than that of the ZnO (0.10 × 1018 cm−3). The underlying mechanism for the abnormal electrical performance was further demonstrated by X-ray photoelectron spectroscopy (XPS) detection and first-principles calculations. The analysis found that chemical bonds were formed between the oxide (O) of amorphous ZnO and the carbon (C) of graphene and that the transfer of the π electrons was restricted by C=O and C-O-C bonds. Given the above, this study further clarifies the mechanism affecting the photoelectric properties of amorphous composite films.
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Affiliation(s)
- Zhuo Zhao
- School of Chemical Engineering, University of Science and Technology Liaoning, Anshan 114051, China; (Z.Z.); (J.W.); (Z.L.)
- Research Institute of Surface Engineering, University of Science and Technology Liaoning, Anshan 114051, China;
| | - Fang Fang
- Research Institute of Surface Engineering, University of Science and Technology Liaoning, Anshan 114051, China;
| | - Junsheng Wu
- School of Chemical Engineering, University of Science and Technology Liaoning, Anshan 114051, China; (Z.Z.); (J.W.); (Z.L.)
- Research Institute of Surface Engineering, University of Science and Technology Liaoning, Anshan 114051, China;
| | - Xinru Tong
- Ansteel Iron and Steel Research Institute, Anshan 114009, China;
| | - Yanwen Zhou
- School of Chemical Engineering, University of Science and Technology Liaoning, Anshan 114051, China; (Z.Z.); (J.W.); (Z.L.)
- Research Institute of Surface Engineering, University of Science and Technology Liaoning, Anshan 114051, China;
- Correspondence: (Y.Z.); (D.S.)
| | - Zhe Lv
- School of Chemical Engineering, University of Science and Technology Liaoning, Anshan 114051, China; (Z.Z.); (J.W.); (Z.L.)
- Research Institute of Surface Engineering, University of Science and Technology Liaoning, Anshan 114051, China;
| | - Jian Wang
- College of Science, University of Science and Technology Liaoning, Anshan 114051, China;
| | - David Sawtell
- Surface Engineering Group, Manchester Metropolitan University, Manchester M15GD, UK
- Correspondence: (Y.Z.); (D.S.)
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Parthipan P, Cheng L, Rajasekar A, Govarthanan M, Subramania A. Biologically reduced graphene oxide as a green and easily available photocatalyst for degradation of organic dyes. ENVIRONMENTAL RESEARCH 2021; 196:110983. [PMID: 33705769 DOI: 10.1016/j.envres.2021.110983] [Citation(s) in RCA: 33] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/20/2020] [Revised: 02/16/2021] [Accepted: 03/03/2021] [Indexed: 06/12/2023]
Abstract
The disposal of untreated textile industrial wastewater having unmanageable pollutants is a global issue. Eco-friendly remediation technology is needed for the removal of environmental contaminants. In this study, a simple hydrothermal method is adapted to synthesis reduced graphene oxide (PErGO) using Phyllanthus emblica fruits extract and used as a photocatalyst for the degradation of synthetic toxic dyes. The physicochemical properties of green synthesized PErGO are confirmed using UV-Vis spectroscopy, Raman spectroscopy, Fourier transform infrared spectroscopy (FT-IR), X-ray diffraction. The ID/IG ratio is found as 1.02 for GO which is improved to 1.15 for PErGO, which confirms the existence of unrepaired defects after the elimination of negatively charged O2 moieties from the surface of GO. Field emission scanning electron microscopy (FESEM) and transmission electron microscopy (TEM) analysis show well-exploited PErGO morphology. The photocatalytic removal of methylene blue (MB) and methyl orange (MO) dyes is confirmed using UV-vis spectrophotometer. PErGO shows about 92% of MO and 91% of MB degradation within 90 min of sunlight exposure while carried out as a mixed dye degradation. The sustainability of this catalyst is confirmed by testing it for five subsequent degradation cycles and noticed a stable and significant degradation activity. Outcomes from this study suggest that eco-friendly PErGO can be used as an alternate sustainable material to treat a large volume of wastewater from various dye industries.
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Affiliation(s)
- Punniyakotti Parthipan
- Electro-Materials Research Laboratory, Centre for Nanoscience and Technology, Pondicherry University, Puducherry, 605014, India
| | - Liang Cheng
- School of Environment and Safety Engineering, Jiangsu University, 301 Xuefu Road, Zhenjiang, 212013, China
| | - Aruliah Rajasekar
- Environmental Molecular Microbiology Research Laboratory, Department of Biotechnology, Thiruvalluvar University, Vellore, 632115, India
| | - Muthusamy Govarthanan
- Department of Environmental Engineering, Kyungpook National University, 80 Daehak-ro, Buk-gu, Daegu, 41566, South Korea.
| | - Angaiah Subramania
- Electro-Materials Research Laboratory, Centre for Nanoscience and Technology, Pondicherry University, Puducherry, 605014, India.
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32
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Nagappagari LR, Lee J, Lee H, Jeong B, Lee K. Energy and environmental applications of Sn 4+/Ti 4+ doped α-Fe 2O 3@Cu 2O/CuO photoanode under optimized photoelectrochemical conditions. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2021; 271:116318. [PMID: 33360662 DOI: 10.1016/j.envpol.2020.116318] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/04/2020] [Revised: 11/20/2020] [Accepted: 12/13/2020] [Indexed: 06/12/2023]
Abstract
The most promising technique for directly converting solar energy into clean fuels and environmental remediation by organic dye degradation is photoelectrochemical (PEC) process. We introduced Sn4+/Ti4+ doped α-Fe2O3@CuxO heterojunction photoanode with complete optimization for PEC hydrogen (H2) generation and organic dye degradation. Improvement of photocurrent photo and reducing overpotentials under optimized conditions lead to enhancing PEC performances, degradation efficiency of organic compounds, and H2 generation generation rate. The optimized heterojunction photoanode (5TiFe@CuxO-D) showed IPCE exceeding 42% compared with pristine hematite (Fe0.01-8006h) nanostructures (28%). Additionally, all the optimized photoanodes showed higher PEC stability for 10 h. Time-resolved PL spectra confirm the improved average lifetime for heterojunction photoanodes, supporting the enhanced PEC performance. Optimized 5TiFe@CuxO-D material achieved PEC H2 generation of ∼300 μL h-1.cm-2 which is two times higher than pristine hematite's activity (150 μL h-1.cm-2) and almost 99% degradation efficiency within 120 min of irradiation time. Therefore, a state-of-the-art study has been explored for hematite-based heterojunction photoanodes reflecting the superior PEC performance and hydrogen, methyl orange (MO) dye degradation activities. The improved results were reported because of stable morphology and better crystallinity acquired through systematic investigation of thermal effects and hydrothermal duration, improved electrical properties by Sn/Ti doping into the lattice of α-Fe2O3 and optimization of CuxO deposition methods. The formation of well-defined heterojunction minimizes the recombination of the charge carrier and leads to effective transportation of excited electrons for the enhanced PEC performance.
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Affiliation(s)
- Lakshmana Reddy Nagappagari
- School of Nano & Materials Science and Engineering, Kyungpook National University, 2559, Gyeongsang-daero, Sangju, Gyeongbuk, South Korea; Research Institute of Environmental Science & Technology, Kyungpook National University, 80 Daehak-ro, Buk-gu, Daegu, South Korea
| | - Jaewon Lee
- School of Nano & Materials Science and Engineering, Kyungpook National University, 2559, Gyeongsang-daero, Sangju, Gyeongbuk, South Korea; Research Institute of Environmental Science & Technology, Kyungpook National University, 80 Daehak-ro, Buk-gu, Daegu, South Korea; Department of Advanced Science and Technology Convergence, Kyungpook National University, 37224, Sangju, Gyeongsangbuk-do, Republic of Korea
| | - Hyeonkwon Lee
- Research Institute of Environmental Science & Technology, Kyungpook National University, 80 Daehak-ro, Buk-gu, Daegu, South Korea
| | - Beomgyun Jeong
- Research Center for Materials Analysis, Korea Basic Science Institute, 34133, Daejeon, South Korea
| | - Kiyoung Lee
- School of Nano & Materials Science and Engineering, Kyungpook National University, 2559, Gyeongsang-daero, Sangju, Gyeongbuk, South Korea; Research Institute of Environmental Science & Technology, Kyungpook National University, 80 Daehak-ro, Buk-gu, Daegu, South Korea; Department of Advanced Science and Technology Convergence, Kyungpook National University, 37224, Sangju, Gyeongsangbuk-do, Republic of Korea.
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33
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Radoor S, Karayil J, Jayakumar A, Parameswaranpillai J, Siengchin S. Efficient removal of methyl orange from aqueous solution using mesoporous ZSM-5 zeolite: Synthesis, kinetics and isotherm studies. Colloids Surf A Physicochem Eng Asp 2021. [DOI: 10.1016/j.colsurfa.2020.125852] [Citation(s) in RCA: 25] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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34
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Senthil RA, Wu Y, Liu X, Pan J. A facile synthesis of nano AgBr attached potato-like Ag 2MoO 4 composite as highly visible-light active photocatalyst for purification of industrial waste-water. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2021; 269:116034. [PMID: 33310494 DOI: 10.1016/j.envpol.2020.116034] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/24/2020] [Revised: 09/09/2020] [Accepted: 09/12/2020] [Indexed: 05/16/2023]
Abstract
In recent times, silver (Ag) based semiconductors have been gained a lot of attention as photocatalysts for industrial waste-water treatment owing to their strong visible-light absorbing capability and small bandgap energy. Therefore, herein, we have designed and utilized a one-pot hydrothermal approach to the synthesis of nano-sized AgBr covered potato-like Ag2MoO4 composite photocatalysts for the elimination of organic wastes from the aquatic environment. To achieve a high-performance photocatalyst, a sequence of AgBr/Ag2MoO4 composites were acquired with varying CTAB from 1 to 4 mmol. Furthermore, the photocatalytic activity of these photocatalysts was confirmed from decomposing of Rhodamine B (RhB) dye via visible-light elucidation. It can be noticed that AgBr/Ag2MoO4 composites exhibited significantly increased photocatalytic behaviour as compared with pure AgBr and Ag2MoO4. Surprisingly, the AgBr/Ag2MoO4 composite obtained from 2 mmol CTAB was eliminated the entire RhB dye with 25 min. Also, the recycling experiment indicates the AgBr/Ag2MoO4 composite has an excellent photo-stability. Accordingly, the as-acquired AgBr/Ag2MoO4 composite would be a suitable photocatalytic material for industrial waste-water purification.
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Affiliation(s)
- Raja Arumugam Senthil
- Faculty of Materials and Manufacturing, Beijing University of Technology, Beijing 100124, PR China; State Key Laboratory of Chemical Resources Engineering, Beijing Advanced Innovation Center for Soft Matter Science and Engineering, College of Chemistry, Beijing University of Chemical Technology, Beijing 100029, China
| | - Yufeng Wu
- Faculty of Materials and Manufacturing, Beijing University of Technology, Beijing 100124, PR China.
| | - Xiaomin Liu
- Faculty of Materials and Manufacturing, Beijing University of Technology, Beijing 100124, PR China
| | - Junqing Pan
- State Key Laboratory of Chemical Resources Engineering, Beijing Advanced Innovation Center for Soft Matter Science and Engineering, College of Chemistry, Beijing University of Chemical Technology, Beijing 100029, China
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35
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Jiang C, Zhao H, Xiao H, Wang Y, Liu L, Chen H, Shen C, Zhu H, Liu Q. Recent advances in graphene-family nanomaterials for effective drug delivery and phototherapy. Expert Opin Drug Deliv 2020; 18:119-138. [PMID: 32729733 DOI: 10.1080/17425247.2020.1798400] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
INTRODUCTION Owing to the unique properties of graphene, including large specific surface area, excellent thermal conductivity, and optical absorption, graphene-family nanomaterials (GFNs) have attracted extensive attention in biomedical applications, particularly in drug delivery and phototherapy. AREAS COVERED In this review, we point out several challenges involved in the clinical application of GFNs. Then, we provide an overview of the most recent publications about GFNs in biomedical applications, including diverse strategies for improving the biocompatibility, specific targeting and stimuli-responsiveness of GFNs for drug delivery, codelivery of drug and gene, photothermal therapy, photodynamic therapy, and multimodal combination therapy. EXPERT OPINION Although the application of GFNs is still in the preclinical stage, rational modification of GFNs with functional elements or making full use of GFNs-based multimodal combination therapy might show great potential in biomedicine for clinical application.
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Affiliation(s)
- Cuiping Jiang
- School of Traditional Chinese Medicine, Southern Medical University , Guangzhou, China
| | - Haiyue Zhao
- School of Traditional Chinese Medicine, Southern Medical University , Guangzhou, China
| | - Haiyan Xiao
- School of Traditional Chinese Medicine, Southern Medical University , Guangzhou, China
| | - Yuan Wang
- School of Traditional Chinese Medicine, Southern Medical University , Guangzhou, China
| | - Li Liu
- School of Traditional Chinese Medicine, Southern Medical University , Guangzhou, China
| | - Huoji Chen
- School of Traditional Chinese Medicine, Southern Medical University , Guangzhou, China
| | - Chunyan Shen
- School of Traditional Chinese Medicine, Southern Medical University , Guangzhou, China
| | - Hongxia Zhu
- Combining Traditional Chinese and Western Medicine Hospital, Southern Medical University , 510315, Guangzhou, P. R. China
| | - Qiang Liu
- School of Traditional Chinese Medicine, Southern Medical University , Guangzhou, China
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Wu J, Li Z, Tan H, Du S, Liu T, Yuan Y, Liu X, Qiu H. Highly Selective Separation of Rare Earth Elements by Zn-BTC Metal-Organic Framework/Nanoporous Graphene via In Situ Green Synthesis. Anal Chem 2020; 93:1732-1739. [PMID: 33355452 DOI: 10.1021/acs.analchem.0c04407] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Rare earth elements (REEs) are used widely in devices of many fields, but it is still a troublesome task to achieve their selective separation and purification. Metal-organic frameworks (MOFs) as an emerging porous crystalline material have been used for selective separation of REEs using the size-selective crystallization properties. However, so far, almost all MOFs cannot be used directly for selective separation of REEs in strong acid via solid-state adsorption. Herein, a zinc-trimesic acid (Zn-BTC) MOF is grown by solid synthesis in situ on ZnO nanoparticles covering nanoporous graphene for preparing Zn-BTC MOF/nanoporous graphene composites with strong acid resistance. The adsorption capacity of the resulting composites to REEs is highly sensitive to the ionic radius, which may be attributed to the fact that the REE ions coordinate with O to form a stable structure. The selectivity of Ce/Lu is ≈10,000, and it is extremely important that the selectivity between adjacent REEs (e.g., Nd/Pr) is as high as ≈9.8, so the composite exhibits the best separation performance so far. This work provides a green, facile, scale, and effective synthesis strategy of Zn-BTC MOF/nanoporous graphene, which is hopefully applied directly in the separation industries of REEs.
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Affiliation(s)
- Jinsheng Wu
- Key Laboratory of Bioelectrochemistry & Environmental Analysis of Gansu Province, College of Chemistry & Chemical Engineering, Northwest Normal University, Lanzhou 730070, China.,Lanzhou Ecological Environment Monitoring Center of Gansu Province, Lanzhou 730000, China
| | - Zhan Li
- CAS Key Laboratory of Chemistry of Northwestern Plant Resources and Key Laboratory for Natural Medicine of Gansu Province, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, China.,School of Nuclear Science and Technology, Lanzhou University, Lanzhou 730000, China
| | - Hongxin Tan
- CAS Key Laboratory of Chemistry of Northwestern Plant Resources and Key Laboratory for Natural Medicine of Gansu Province, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, China
| | - Shaobo Du
- CAS Key Laboratory of Chemistry of Northwestern Plant Resources and Key Laboratory for Natural Medicine of Gansu Province, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, China
| | - Tianqi Liu
- CAS Key Laboratory of Chemistry of Northwestern Plant Resources and Key Laboratory for Natural Medicine of Gansu Province, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, China
| | - Yanli Yuan
- Lanzhou Ecological Environment Monitoring Center of Gansu Province, Lanzhou 730000, China
| | - Xiuhui Liu
- Key Laboratory of Bioelectrochemistry & Environmental Analysis of Gansu Province, College of Chemistry & Chemical Engineering, Northwest Normal University, Lanzhou 730070, China
| | - Hongdeng Qiu
- CAS Key Laboratory of Chemistry of Northwestern Plant Resources and Key Laboratory for Natural Medicine of Gansu Province, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, China.,College of Chemistry, Zhengzhou University, Zhengzhou 450001, China
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37
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Improved Photocatalytic Activity of g‐C
3
N
4
/ZnO: A Potential Direct Z‐Scheme Nanocomposite. ChemistrySelect 2020. [DOI: 10.1002/slct.202003166] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
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38
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Pogacean F, Ştefan M, Toloman D, Popa A, Leostean C, Turza A, Coros M, Pana O, Pruneanu S. Photocatalytic and Electrocatalytic Properties of NGr-ZnO Hybrid Materials. NANOMATERIALS 2020; 10:nano10081473. [PMID: 32727153 PMCID: PMC7466554 DOI: 10.3390/nano10081473] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/08/2020] [Revised: 07/21/2020] [Accepted: 07/22/2020] [Indexed: 11/16/2022]
Abstract
N-doped graphene-ZnO hybrid materials with different N-doped graphene:ZnO wt% ratios (1:10; 1:20; 1:30) were prepared by a simple and inexpensive sol-gel method. The materials denoted NGr-ZnO-1 (1:10), NGr-ZnO-2 (1:20), and NGr-ZnO-3 (1:30) were investigated with advanced techniques and their morpho-structural, photocatalytic, and electrocatalytic properties were reported. Hence, pure N-doped graphene sample contains flakes with the size ranging from hundreds of nanometers to micrometers. In the case of all NGr-ZnO hybrid materials, the flakes appear heavily decorated with ZnO nanoparticles, having a cauliflower-like morphology. The X-ray powder diffraction (XRD) investigation of N-doped graphene sample revealed that it was formed by a mixture of graphene oxide, few-and multi-layer graphene. After the ZnO nanoparticles were attached to graphene, major diffraction peaks corresponding to crystalline planes of ZnO were seen. The qualitative and quantitative compositions of the samples were further evidenced by X-ray photoelectron spectroscopy (XPS). In addition, UV photoelectron spectroscopy (UPS) spectra allowed the determination of the ionization energy and valence band maxima. The energy band alignment of the hybrid materials was established by combining UV-Vis with UPS results. A high photocatalytic activity of NGr-ZnO samples against rhodamine B solution was observed. The associated reactive oxygen species (ROS) generation was monitored by electron paramagnetic resonance (EPR)-spin trapping technique. In accordance with bands alignment and identification of radical species, the photocatalytic mechanism was elucidated.
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Ren Y, Han Y, Li Z, Liu X, Zhu S, Liang Y, Yeung KWK, Wu S. Ce and Er Co-doped TiO 2 for rapid bacteria- killing using visible light. Bioact Mater 2020; 5:201-209. [PMID: 32123773 PMCID: PMC7037594 DOI: 10.1016/j.bioactmat.2020.02.005] [Citation(s) in RCA: 43] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2019] [Revised: 02/03/2020] [Accepted: 02/04/2020] [Indexed: 01/15/2023] Open
Abstract
Bacterial infection and related diseases are threatening the health of human beings. Photocatalytic disinfection as a simple and low-cost disinfection strategy is attracting more and more attention. In this work, TiO2 nanoparticles (NPs) were modified by co-doping of Ce and Er using the sol-gel method, which endowed TiO2 NPs with enhanced visible light photocatalytic performance but not pure ultraviolet photocatalytic properties compared the untreated TiO2. Our results disclosed that as the doping content of Er increased, the photocatalytic activity of modified TiO2 NPs initially increased and subsequently decreased. The same trend occurred for Ce doping. When the doping dose of Er and Ce is 0.5 mol% and 0.2 mol%, the 0.5Ce0.2Ti-O calcined at 800 °C presented the best antibacterial properties, with the antibacterial efficiency of 91.23% and 92.8% for Staphylococcus aureus and Escherichia coli, respectively. The existence of Er ions is thought to successfully turn the near-infrared radiation into visible region, which is easier to be absorbed by TiO2 NPs. Meanwhile, the addition of Ce ions can effectively extend spectral response range and inhibit the recombination of electrons and holes, enhancing the photocatalytic disinfection activity of co-doped TiO2.
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Affiliation(s)
- Yawei Ren
- The Key Laboratory of Advanced Ceramics and Machining Technology by the Ministry of Education of China, School of Materials Science & Engineering, Tianjin University, Tianjin, 300072, China
| | - Yajing Han
- The Key Laboratory of Advanced Ceramics and Machining Technology by the Ministry of Education of China, School of Materials Science & Engineering, Tianjin University, Tianjin, 300072, China
| | - Zhaoyang Li
- The Key Laboratory of Advanced Ceramics and Machining Technology by the Ministry of Education of China, School of Materials Science & Engineering, Tianjin University, Tianjin, 300072, China
| | - Xiangmei Liu
- Ministry-of-Education Key Laboratory for the Green Preparation and Application of Functional Materials, Hubei Key Laboratory of Polymer Materials, School of Materials Science & Engineering, Hubei University, Wuhan, 430062, China
| | - Shengli Zhu
- The Key Laboratory of Advanced Ceramics and Machining Technology by the Ministry of Education of China, School of Materials Science & Engineering, Tianjin University, Tianjin, 300072, China
| | - Yanqin Liang
- The Key Laboratory of Advanced Ceramics and Machining Technology by the Ministry of Education of China, School of Materials Science & Engineering, Tianjin University, Tianjin, 300072, China
| | - Kelvin Wai Kwok Yeung
- Department of Orthopaedics & Traumatology, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Pokfulam, Hong Kong, 999077, China
| | - Shuilin Wu
- The Key Laboratory of Advanced Ceramics and Machining Technology by the Ministry of Education of China, School of Materials Science & Engineering, Tianjin University, Tianjin, 300072, China
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40
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Saffari R, Shariatinia Z, Jourshabani M. Synthesis and photocatalytic degradation activities of phosphorus containing ZnO microparticles under visible light irradiation for water treatment applications. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2020; 259:113902. [PMID: 31918149 DOI: 10.1016/j.envpol.2019.113902] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/16/2019] [Revised: 12/12/2019] [Accepted: 12/29/2019] [Indexed: 06/10/2023]
Abstract
A series of phosphorus containing ZnO (P-ZnO) photocatalysts with various percentages of phosphorus were successfully synthesized using the hydrothermal method. The structural, physical and optical properties of the obtained microparticles were investigated using diverse techniques such as X-ray diffraction (XRD), Fourier transform infrared (FT-IR) spectroscopy, ultraviolet-visible diffusion reflectance spectroscopy (UV-Vis DRS), photoluminescence (PL) spectroscopy, transmission electron microscopy (TEM), energy dispersive X-ray spectroscopy (EDS) and N2 adsorption-desorption analysis. The photocatalytic activities of the pure and P-ZnO samples were evaluated for the degradation of Rhodamine B (RhB) under visible light irradiation. The parameters such as pH, catalyst dosage, contaminant concentration and effect of persulfate as an oxidant were studied. It was found that the P-ZnO1.8% photocatalyst could destroy 99% of RhB (5 ppm) in 180 min at pH = 7; furthermore, it degraded ∼100% of 5 and 10 ppm of the RhB pollutant in 120 and 180 min, respectively, only by adding 0.01 g of persulfate into the reaction solution. To determine the photocatalytic mechanism, 2-propanol, benzoquinone and EDTA were used and it was indicated that hydroxyl radicals, superoxide ions and holes, all had major roles in the photocatalytic degradation but the hydroxyl radical effect was the most significant. The phenol degradation was also investigated using the P-ZnO1.8% optimum photocatalyst which could destroy 53% of the phenol (5 ppm) in 180 min. According to the reusability test, it was proved that after 5 cycles, the catalyst activity was not highly changed and it was potentially capable of pollutant degradation.
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Affiliation(s)
- Reyhaneh Saffari
- Department of Chemistry, Amirkabir University of Technology (Tehran Polytechnic), P.O.Box:15875-4413, Tehran, Iran
| | - Zahra Shariatinia
- Department of Chemistry, Amirkabir University of Technology (Tehran Polytechnic), P.O.Box:15875-4413, Tehran, Iran.
| | - Milad Jourshabani
- Department of Chemistry, Amirkabir University of Technology (Tehran Polytechnic), P.O.Box:15875-4413, Tehran, Iran
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41
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Gao X, Yang B, Yao W, Wang Y, Zong R, Wang J, Li X, Jin W, Tao D. Enhanced photocatalytic activity of ZnO/g-C 3N 4 composites by regulating stacked thickness of g-C 3N 4 nanosheets. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2020; 257:113577. [PMID: 31761595 DOI: 10.1016/j.envpol.2019.113577] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/13/2019] [Revised: 10/28/2019] [Accepted: 11/03/2019] [Indexed: 06/10/2023]
Abstract
A self-assembly method was adopted to synthesize loading architecture of ZnO/g-C3N4 heterojunction composites by hybridization of g-C3N4 nanosheets and ZnO nanoparticles utilizing a refluxing method at a low temperature. More importantly, we provided a novel route to regulate the π-π restacking thickness of the g-C3N4 nanosheets among ZnO/g-C3N4 composites by the controlling the refluxing time in the ethanol solution, which can optimize the surface hybrid structure, optical response and photocatalytic activity. Among all of samples, ZnO/g-C3N4 composites with a refluxing 12 h showed the enhancement of photocatalytic activity. The enhanced visible light photocatalytic activity of ZCN-12 composites can be ascribed to the synergistic effects of the construction of hybrid structures, reduction of structural defects of g-C3N4 nanosheets and suitable π-π restacking g-C3N4 nanosheets loading thickness.
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Affiliation(s)
- Xingxing Gao
- School of Civil Engineering, University of Science and Technology Liaoning, Anshan, 114051, Liaoning province, PR China; Department of Chemistry, Tsinghua University, Beijing, 100084, PR China
| | - Binzheng Yang
- School of Civil Engineering, University of Science and Technology Liaoning, Anshan, 114051, Liaoning province, PR China
| | - Wenqing Yao
- Department of Chemistry, Tsinghua University, Beijing, 100084, PR China.
| | - Yajun Wang
- State Key Laboratory of Heavy Oil Processing, China University of Petroleum, Beijing, 102249, PR China
| | - Ruilong Zong
- Department of Chemistry, Tsinghua University, Beijing, 100084, PR China
| | - Jian Wang
- Department of Chemistry, Tsinghua University, Beijing, 100084, PR China; School of Mining Engineering, University of Science and Technology Liaoning, Anshan, 114051, Liaoning province, PR China
| | - Xianchun Li
- School of Chemical Engineering, University of Science and Technology Liaoning, Anshan, 114051, Liaoning province, PR China
| | - Wenjie Jin
- School of Chemical Engineering, University of Science and Technology Liaoning, Anshan, 114051, Liaoning province, PR China
| | - Dongping Tao
- School of Mining Engineering, University of Science and Technology Liaoning, Anshan, 114051, Liaoning province, PR China
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42
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Guo F, Sun H, Cheng L, Shi W. Oxygen-defective ZnO porous nanosheets modified by carbon dots to improve their visible-light photocatalytic activity and gain mechanistic insight. NEW J CHEM 2020. [DOI: 10.1039/d0nj02268c] [Citation(s) in RCA: 38] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A carbon dots/oxygen-defective ZnO (COZ) porous nanosheet composite photocatalyst was prepared via a one-step liquid-phase wet chemistry method for the highly efficient visible-light photocatalytic degradation of tetracycline (TC).
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Affiliation(s)
- Feng Guo
- School of Energy and Power
- Jiangsu University of Science and Technology
- Zhenjiang
- P. R. China
| | - Haoran Sun
- School of Energy and Power
- Jiangsu University of Science and Technology
- Zhenjiang
- P. R. China
| | - Lei Cheng
- School of Energy and Power
- Jiangsu University of Science and Technology
- Zhenjiang
- P. R. China
| | - Weilong Shi
- School of Material Science and Engineering
- Jiangsu University of Science and Technology
- Zhenjiang
- P. R. China
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43
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Zhu Z, Guo F, Xu Z, Di X, Zhang Q. Photocatalytic degradation of an organophosphorus pesticide using a ZnO/rGO composite. RSC Adv 2020; 10:11929-11938. [PMID: 35685612 PMCID: PMC9122623 DOI: 10.1039/d0ra01741h] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2020] [Accepted: 03/16/2020] [Indexed: 11/24/2022] Open
Abstract
A zinc oxide (ZnO)/reduced graphene oxide (rGO) nanocomposite was synthesized via a hydrothermal synthesis method and used for the photocatalytic degradation of dimethoate. In the synthesis process of the ZnO/rGO nanocomposite, hexamethylenetetramine (HMT) was used as both a mineralizer and reducing agent. When the ZnO nanoparticles formed on the surfaces of graphene oxide sheets, the sheets were simultaneously reduced by HMT to form rGO. The photodegradation rate and photodegradation efficiency of dimethoate by the ZnO/rGO nanocomposite were 4 and 1.5 times, respectively, higher than those of bare ZnO. The ZnO/rGO nanocomposite possessed a high surface area of 41.0 m2 g−1 and pore volume of 4.72 × 10−3 cm3 g−1, which were conducive to the adsorption and mass transfer of pesticides and oxygen. The enhanced photocatalytic performance of the ZnO/rGO nanocomposite was attributed to the decrease in electron–hole recombination rate and effective carrier transport caused by the presence of rGO. Photoelectrochemical measurements confirmed that the nanocomposite exhibited a high charge transfer rate at the ZnO/rGO interface. These results indicate that ZnO/rGO nanocomposites have great application potential in pollutant degradation. The fabricated ZnO/rGO nanocomposites performed enhanced photocatalytic performance due to a high charge transfer rate at the ZnO/rGO interface.![]()
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Affiliation(s)
- Zihan Zhu
- Key Laboratory of Industrial Ecology and Environmental Engineering (Ministry of Education)
- School of Ocean Science and Technology
- Dalian University of Technology
- Panjin 124221
- China
| | - Feng Guo
- Key Laboratory of Industrial Ecology and Environmental Engineering (Ministry of Education)
- School of Ocean Science and Technology
- Dalian University of Technology
- Panjin 124221
- China
| | - Zhonghao Xu
- Key Laboratory of Industrial Ecology and Environmental Engineering (Ministry of Education)
- School of Ocean Science and Technology
- Dalian University of Technology
- Panjin 124221
- China
| | - Xiaoxuan Di
- Key Laboratory of Industrial Ecology and Environmental Engineering (Ministry of Education)
- School of Ocean Science and Technology
- Dalian University of Technology
- Panjin 124221
- China
| | - Qian Zhang
- Key Laboratory of Industrial Ecology and Environmental Engineering (Ministry of Education)
- School of Ocean Science and Technology
- Dalian University of Technology
- Panjin 124221
- China
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44
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Photocatalytic degradation using ZnO for the treatment of RB 19 and RB 21 dyes in industrial effluents and mathematical modeling of the process. Chem Eng Res Des 2020. [DOI: 10.1016/j.cherd.2019.10.021] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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45
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Kumar S, Kumar A, Kumar A, Krishnan V. Nanoscale zinc oxide based heterojunctions as visible light active photocatalysts for hydrogen energy and environmental remediation. CATALYSIS REVIEWS-SCIENCE AND ENGINEERING 2019. [DOI: 10.1080/01614940.2019.1684649] [Citation(s) in RCA: 39] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Affiliation(s)
- Suneel Kumar
- School of Basic Sciences, Indian Institute of Technology Mandi, Mandi, India
| | - Ajay Kumar
- School of Basic Sciences, Indian Institute of Technology Mandi, Mandi, India
| | - Ashish Kumar
- School of Basic Sciences, Indian Institute of Technology Mandi, Mandi, India
| | - Venkata Krishnan
- School of Basic Sciences, Indian Institute of Technology Mandi, Mandi, India
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46
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Fabrication of Hybrid Fe2V4O13/ZnO Heterostructure for Effective Mineralization of Aqueous Methyl Orange Solution. J CLUST SCI 2019. [DOI: 10.1007/s10876-019-01691-9] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
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47
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Graphene quantum dots functionalized β-cyclodextrin and cellulose chiral stationary phases with enhanced enantioseparation performance. J Chromatogr A 2019; 1600:209-218. [PMID: 31047665 DOI: 10.1016/j.chroma.2019.04.053] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2019] [Revised: 04/18/2019] [Accepted: 04/19/2019] [Indexed: 10/27/2022]
Abstract
Graphene quantum dots (GQD) functionalized β-cyclodextrin (β-CD) and cellulose silica composites were first prepared and applied in HPLC as chiral stationary phases (CSP) to investigate the effect of GQDs on chiral separation. Through comparing the enantioseparation performance of GQDs functionalized β-CD or cellulose CSPs and unmodified β-CD or cellulose CSPs, we found GQDs enhanced the enantioseparation performance of nature β-CD, β-CD-3,5-dimethylphenylcarbamate derivative and cellulose-3,5-dimethylphenylcarbamate derivative. Molecular modeling was applied to understand and theoretically study the enhancement mechanism of GQDs for enantioseparation. According to molecular simulation results, GQDs provide extra interactions such as hydrophobic, hydrogen bond and π-π interaction when chiral selector interacts with enantiomers, which enhances the chiral recognition ability indirectly. The molecular simulation results showed a good agreement with the experimental results. Our work reveals the enhancement performance of GQDs for chiral separation, it can be expected that GQDs-based chiral composites and chiral GQDs have great prospect in chiral separation and other research fields such as asymmetric synthesis, chiral catalysis, chiral recognition and drug delivery.
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48
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Di X, Guo F, Zhu Z, Xu Z, Qian Z, Zhang Q. In situ synthesis of ZnO–GO/CGH composites for visible light photocatalytic degradation of methylene blue. RSC Adv 2019; 9:41209-41217. [PMID: 35540050 PMCID: PMC9076400 DOI: 10.1039/c9ra09260a] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2019] [Accepted: 12/09/2019] [Indexed: 11/21/2022] Open
Abstract
A novel ZnO–GO/CGH composite was prepared using an in situ synthesis process for photodegradation of methylene blue under visible light illumination. The chitin–graphene composite hydrogel (CGH) was used to provide uniform binding of the nano ZnO–GO composite to the hydrogel surface and prevent their agglomeration. GO provides multi-dimensional protons and electron transport channels for ZnO with a flower-like structure, which possessed improved photo-catalytic activity. SEM analysis indicates that the hydrogel has good adsorption properties with rougher surfaces and porous microstructure, which enables it to adsorb the dyes effectively. Under synergetic enhancement of adsorption and photo-catalysis, catalytic activity and nano ZnO–GO/CGH recycling improved greatly. Synthesized nano ZnO–GO/CGH showed high dye removal efficiency of 99%, about 2.2 times that of the pure chitin gel under the same condition. This suggests the potential application of the new photocatalytic composites to remove organic dyes from wastewater. A novel ZnO–GO/CGH composite was prepared using an in situ synthesis process for photodegradation of methylene blue under visible light illumination.![]()
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Affiliation(s)
- Xiaoxuan Di
- Key Laboratory of Industrial Ecology and Environmental Engineering (Ministry of Education)
- School of Ocean Science and Technology
- Dalian University of Technology
- Panjin 124221
- China
| | - Feng Guo
- Key Laboratory of Industrial Ecology and Environmental Engineering (Ministry of Education)
- School of Ocean Science and Technology
- Dalian University of Technology
- Panjin 124221
- China
| | - Zihan Zhu
- Key Laboratory of Industrial Ecology and Environmental Engineering (Ministry of Education)
- School of Ocean Science and Technology
- Dalian University of Technology
- Panjin 124221
- China
| | - Zhonghao Xu
- Key Laboratory of Industrial Ecology and Environmental Engineering (Ministry of Education)
- School of Ocean Science and Technology
- Dalian University of Technology
- Panjin 124221
- China
| | - Ziqi Qian
- Key Laboratory of Industrial Ecology and Environmental Engineering (Ministry of Education)
- School of Ocean Science and Technology
- Dalian University of Technology
- Panjin 124221
- China
| | - Qian Zhang
- Key Laboratory of Industrial Ecology and Environmental Engineering (Ministry of Education)
- School of Ocean Science and Technology
- Dalian University of Technology
- Panjin 124221
- China
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49
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Liang Y, Chen Y, Zhao M, Lin L, Duan R, Jiang Y, Yan J, Wang Y, Zeng J, Zhang Y. Spatially separated cocatalysts for efficient charge separation: a hollow Pt/CdS/N–ZnO/CoOx graphene microtubule with high stability for photocatalytic reactions and sustainable recycling. Catal Sci Technol 2019. [DOI: 10.1039/c9cy01776c] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
The spatially separated Pt/CdS/N–ZnO/CoOx graphene microtubule (PCNZCo-GM) with double cocatalysts is prepared by a capillary action assisted hydrothermal method for enhancing charge separation efficiency and photocatalytic oxidation ability.
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Affiliation(s)
- Yong Liang
- College of Science
- Sichuan Agricultural University
- Yaan 625014
- China
- College of Pharmacy and Biological Engineering
| | - Yuexing Chen
- College of Science
- Sichuan Agricultural University
- Yaan 625014
- China
| | - Maojun Zhao
- College of Science
- Sichuan Agricultural University
- Yaan 625014
- China
| | - Li Lin
- College of Science
- Sichuan Agricultural University
- Yaan 625014
- China
| | - Rongtao Duan
- College of Science
- Sichuan Agricultural University
- Yaan 625014
- China
| | - Yuanyuan Jiang
- College of Science
- Sichuan Agricultural University
- Yaan 625014
- China
| | - Jun Yan
- College of Pharmacy and Biological Engineering
- Chengdu University
- Chengdu 610106
- China
| | - Ying Wang
- College of Water Conservancy and Hydropower Engineering
- Sichuan Agricultural University
- Yaan 625014
- China
| | - Jun Zeng
- Key Laboratory of Green Chemistry of Sichuan Institutes of Higher Education
- Sichuan University of Science and Engineering
- Zigong 643002
- China
| | - Yunsong Zhang
- College of Science
- Sichuan Agricultural University
- Yaan 625014
- China
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