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Gautam A, Dabral H, Singh A, Tyagi S, Tyagi N, Srivastava D, Kushwaha HR, Singh A. Graphene-based metal/metal oxide nanocomposites as potential antibacterial agents: a mini-review. Biomater Sci 2024; 12:4630-4649. [PMID: 39140167 DOI: 10.1039/d4bm00796d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/15/2024]
Abstract
Antimicrobial resistance (AMR) is a rising issue worldwide, which is increasing prolonged illness and mortality rates in the population. Similarly, bacteria have generated multidrug resistance (MDR) by developing various mechanisms to cope with existing antibiotics and therefore, there is a need to develop new antibacterial and antimicrobial agents. Biocompatible nanomaterials like graphene and its derivatives, graphene oxide (GO), and reduced graphene oxide (rGO) loaded with metal/metal oxide nanoparticles have been explored as potential antibacterial agents. It is observed that nanocomposites of GO/rGO and metal/metal oxide nanoparticles can result in the synthesis of less toxic, more stable, controlled size, uniformly distributed, and cost-effective nanomaterials compared to pure metal nanoparticles. Antibacterial studies of these nanocomposites show their considerable potential as antibacterial and antimicrobial agents, however, issues like the mechanism of antimicrobial action and their cytotoxicity need to be explored in detail. This review highlights a comparative analysis of graphene-based metal and metal oxide nanoparticles as potential antibacterial agents against AMR and MDR.
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Affiliation(s)
- Akanksha Gautam
- Special Centre for Systems Medicine, Jawaharlal Nehru University, New Delhi-110067, India.
| | - Himanki Dabral
- School of Agriculture Sciences, Shri Guru Ram Rai University, Dehradun, Uttarakhand-248001, India
| | - Awantika Singh
- School of Biotechnology, Jawaharlal Nehru University, New Delhi-110067, India
| | - Sourabh Tyagi
- School of Biotechnology, Jawaharlal Nehru University, New Delhi-110067, India
| | - Nipanshi Tyagi
- School of Biotechnology, Jawaharlal Nehru University, New Delhi-110067, India
| | - Diksha Srivastava
- School of Biotechnology, Jawaharlal Nehru University, New Delhi-110067, India
| | - Hemant R Kushwaha
- Special Centre for Systems Medicine, Jawaharlal Nehru University, New Delhi-110067, India.
- School of Agriculture Sciences, Shri Guru Ram Rai University, Dehradun, Uttarakhand-248001, India
| | - Anu Singh
- Special Centre for Systems Medicine, Jawaharlal Nehru University, New Delhi-110067, India.
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Thakur S, Badoni A, Samriti, Sharma P, Ojha A, Swart HC, Kuznetsov AY, Prakash J. Standalone Highly Efficient Graphene Oxide as an Emerging Visible Light-Driven Photocatalyst and Recyclable Adsorbent for the Sustainable Removal of Organic Pollutants. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2024; 40:18486-18502. [PMID: 39172065 DOI: 10.1021/acs.langmuir.4c01727] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 08/23/2024]
Abstract
Carbon-based nanostructures are promising eco-friendly multifunctional nanomaterials because of their tunable surface and optoelectronic properties for a variety of energy and environmental applications. The present study focuses on the synthesis of graphene oxide (GO) with particular emphasis on engineering its surface and optical properties for making it an excellent adsorbent as well as a visible light-active photocatalyst. It was achieved by modifying the improved Hummers method through optimizing the synthesis parameters involved in the oxidation process. This controlled synthesis allows for systematic tailoring of structural, optical, and surface functionality, leading to improved adsorption and photocatalytic properties for the sustainable removal of organic pollutants in water treatment. Several spectroscopic and microscopic characterization techniques, such as XRD, SEM, Raman, UV-visible, FTIR, TEM, XPS, BET, etc. were employed to analyze the degree of oxidation, surface chemistry/functionalization, morphological, optical, and structural properties of the synthesized GO nanostructures. The analyses showed excellent surface functionality with surface active sites for better adsorptive removal and a tunable band gap from 2.51 to 2.76 eV exhibiting excellent natural sunlight activity (>99%) for photocatalytic removal of the organic pollutant. Various adsorption isotherms have been studied with excellent adsorption capability (Qmax = 454.54 mg/g) as compared to the literature. The study introduces GO both as a proficient stand-alone (sole) nanoadsorbent as well as a nanophotocatalyst for the efficient removal of organic dye pollutants in water treatment. Additionally, the article highlights the sustainable solar light-induced green chemistry aspects of GO as an excellent recyclable adsorbent as a result of its self-cleaning ability under natural sunlight, demonstrating its potential in real eco-friendly environmental and practical applications.
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Affiliation(s)
- Sahil Thakur
- Department of Chemistry, National Institute of Technology Hamirpur, Hamirpur (H.P.) 177005, India
| | - Ayush Badoni
- Department of Chemistry, National Institute of Technology Hamirpur, Hamirpur (H.P.) 177005, India
| | - Samriti
- Department of Chemistry, National Institute of Technology Hamirpur, Hamirpur (H.P.) 177005, India
| | - Pratibha Sharma
- Department of Chemistry, National Institute of Technology Hamirpur, Hamirpur (H.P.) 177005, India
| | - Abhijeet Ojha
- Department of Materials Science and Engineering, National Institute of Technology Hamirpur, Hamirpur (H.P.) 177005, India
| | - Hendrik C Swart
- Department of Physics, University of the Free State, Bloemfontein 9301, Republic of South Africa
| | - Andrej Yu Kuznetsov
- Department of Physics, Centre for Materials Science and Nanotechnology, University of Oslo, Oslo N-0316, Norway
| | - Jai Prakash
- Department of Chemistry, National Institute of Technology Hamirpur, Hamirpur (H.P.) 177005, India
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3
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Kong C, Chen J, Li P, Wu Y, Zhang G, Sang B, Li R, Shi Y, Cui X, Zhou T. Respiratory Toxicology of Graphene-Based Nanomaterials: A Review. TOXICS 2024; 12:82. [PMID: 38251037 PMCID: PMC10820349 DOI: 10.3390/toxics12010082] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/08/2023] [Revised: 01/04/2024] [Accepted: 01/16/2024] [Indexed: 01/23/2024]
Abstract
Graphene-based nanomaterials (GBNs) consist of a single or few layers of graphene sheets or modified graphene including pristine graphene, graphene nanosheets (GNS), graphene oxide (GO), reduced graphene oxide (rGO), as well as graphene modified with various functional groups or chemicals (e.g., hydroxyl, carboxyl, and polyethylene glycol), which are frequently used in industrial and biomedical applications owing to their exceptional physicochemical properties. Given the widespread production and extensive application of GBNs, they can be disseminated in a wide range of environmental mediums, such as air, water, food, and soil. GBNs can enter the human body through various routes such as inhalation, ingestion, dermal penetration, injection, and implantation in biomedical applications, and the majority of GBNs tend to accumulate in the respiratory system. GBNs inhaled and substantially deposited in the human respiratory tract may impair lung defenses and clearance, resulting in the formation of granulomas and pulmonary fibrosis. However, the specific toxicity of the respiratory system caused by different GBNs, their influencing factors, and the underlying mechanisms remain relatively scarce. This review summarizes recent advances in the exposure, metabolism, toxicity and potential mechanisms, current limitations, and future perspectives of various GBNs in the respiratory system.
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Affiliation(s)
- Chunxue Kong
- Environmental Toxicology Laboratory, Hubei Province Key Laboratory of Occupational Hazard Identification and Control, School of Public Health, Wuhan University of Science and Technology, Wuhan 430065, China; (C.K.); (G.Z.); (B.S.); (Y.S.)
| | - Junwen Chen
- Department of Pulmonary and Critical Care Medicine, Xiangyang No. 1 People’s Hospital, Hubei University of Medicine, Xiangyang 441000, China; (J.C.); (P.L.)
| | - Ping Li
- Department of Pulmonary and Critical Care Medicine, Xiangyang No. 1 People’s Hospital, Hubei University of Medicine, Xiangyang 441000, China; (J.C.); (P.L.)
| | - Yukang Wu
- Department of Physical and Chemical Laboratory, The Affiliated Wuxi Center for Disease Control and Prevention of Nanjing Medical University, Wuxi Center for Disease Control and Prevention, Wuxi 214023, China;
| | - Guowei Zhang
- Environmental Toxicology Laboratory, Hubei Province Key Laboratory of Occupational Hazard Identification and Control, School of Public Health, Wuhan University of Science and Technology, Wuhan 430065, China; (C.K.); (G.Z.); (B.S.); (Y.S.)
| | - Bimin Sang
- Environmental Toxicology Laboratory, Hubei Province Key Laboratory of Occupational Hazard Identification and Control, School of Public Health, Wuhan University of Science and Technology, Wuhan 430065, China; (C.K.); (G.Z.); (B.S.); (Y.S.)
| | - Rui Li
- Hubei Key Laboratory of Genetic Regulation and Integrative Biology, School of Life Sciences, Central China Normal University, Wuhan 430079, China;
| | - Yuqin Shi
- Environmental Toxicology Laboratory, Hubei Province Key Laboratory of Occupational Hazard Identification and Control, School of Public Health, Wuhan University of Science and Technology, Wuhan 430065, China; (C.K.); (G.Z.); (B.S.); (Y.S.)
| | - Xiuqing Cui
- Hubei Provincial Key Laboratory for Applied Toxicology, Hubei Center for Disease Control and Prevention, Wuhan 430079, China
| | - Ting Zhou
- Environmental Toxicology Laboratory, Hubei Province Key Laboratory of Occupational Hazard Identification and Control, School of Public Health, Wuhan University of Science and Technology, Wuhan 430065, China; (C.K.); (G.Z.); (B.S.); (Y.S.)
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Saadi H, Khaldi O, Pina J, Costa T, Seixas de Melo JS, Vilarinho P, Benzarti Z. Effect of Co Doping on the Physical Properties and Organic Pollutant Photodegradation Efficiency of ZnO Nanoparticles for Environmental Applications. NANOMATERIALS (BASEL, SWITZERLAND) 2024; 14:122. [PMID: 38202577 PMCID: PMC10780624 DOI: 10.3390/nano14010122] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/11/2023] [Revised: 12/27/2023] [Accepted: 12/30/2023] [Indexed: 01/12/2024]
Abstract
This paper presents a comprehensive investigation of the synthesis and characterization of Zn1-xCoxO (0 ≤ x ≤ 0.05) nanopowders using a chemical co-precipitation approach. The structural, morphological, and vibrational properties of the resulting ZnO nanostructures were assessed through X-ray diffraction, scanning electronic microscopy, and Raman spectroscopy to examine the influence of cobalt doping. Remarkably, a notable congruence between the experimental results and the density functional theory (DFT) calculations for the Co-doped ZnO system was achieved. Structural analysis revealed well-crystallized hexagonal wurtzite structures across all samples. The SEM images demonstrated the formation of spherical nanoparticles in all the samples. The vibrational properties confirmed the formation of a hexagonal wurtzite structure, with an additional Raman peak corresponding to the F2g vibrational mode characteristic of the secondary phase of ZnCo2O4 observed at a 5% cobalt doping concentration. Furthermore, a theoretical examination of cobalt doping's impact on the elastic properties of ZnO demonstrated enhanced mechanical behavior, which improves stability, recyclability, and photocatalytic activity. The photocatalytic study of the synthesized compositions for methylene blue (MB) dye degradation over 100 min of UV light irradiation demonstrated that Co doping significantly improves photocatalytic degradation. The material's prolonged lifetime, reduced rate of photogenerated charge carrier recombination, and increased surface area were identified as pivotal factors accelerating the degradation process. Notably, the photocatalyst with a Zn0.99Co0.01O composition exhibited exceptional efficiency compared to that reported in the literature. It demonstrated high removal activity, achieving an efficiency of about 97% in a shorter degradation time. This study underscores the structural and photocatalytic advancements in the ZnO system, particularly at lower cobalt doping concentrations (1%). The developed photocatalyst exhibits promise for environmental applications owing to its superior photocatalytic performance.
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Affiliation(s)
- Hajer Saadi
- Laboratory of Multifunctional Materials and Applications (LaMMA), Department of Physics, Faculty of Sciences of Sfax, University of Sfax, Soukra Road km 3.5, B.P. 1171, Sfax 3000, Tunisia;
| | - Othmen Khaldi
- LMOP(LR99ES17), Faculty of Sciences of Tunis, University of Tunis El Manar, Tunis 2092, Tunisia;
| | - João Pina
- CQC-IMS, Department of Chemistry, University of Coimbra, 3004-535 Coimbra, Portugal; (J.P.); (T.C.)
| | - Telma Costa
- CQC-IMS, Department of Chemistry, University of Coimbra, 3004-535 Coimbra, Portugal; (J.P.); (T.C.)
| | - J. Sérgio Seixas de Melo
- CQC-IMS, Department of Chemistry, University of Coimbra, 3004-535 Coimbra, Portugal; (J.P.); (T.C.)
| | - Paula Vilarinho
- CICECO–Aveiro Institute of Materials, Department of Materials and Ceramic Engineering, University of Aveiro, 3810-193 Aveiro, Portugal;
| | - Zohra Benzarti
- Laboratory of Multifunctional Materials and Applications (LaMMA), Department of Physics, Faculty of Sciences of Sfax, University of Sfax, Soukra Road km 3.5, B.P. 1171, Sfax 3000, Tunisia;
- CEMMPRE, ARISE, Department of Mechanical Engineering, University of Coimbra, Rua Luís Reis Santos, 3030-788 Coimbra, Portugal
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Meng J, Mao G, Zhu Z, Li Q, Lin X, Wang L, Li Y, Huang Y. Novel Environmentally Responsive Polyvinyl Polyamine Hydrogels Capable of Phase Transformation with Temperature for Applications in Reservoir Profile Control. Gels 2023; 9:950. [PMID: 38131936 PMCID: PMC10742972 DOI: 10.3390/gels9120950] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2023] [Revised: 11/24/2023] [Accepted: 12/01/2023] [Indexed: 12/23/2023] Open
Abstract
Hydrogel has been widely used in reservoir regulation for enhancing oil recovery, however, this process can experience negative influences on the properties and effects of the hydrogels. Therefore, developing novel hydrogels with excellent environmental responsiveness would improve the formation adaptability of hydrogels. In this study, novel polyvinyl polyamine hydrogels were synthesized by a ring-opening addition reaction between polyvinyl polyamines and polyethylene glycol glycidyl ether. The results of atomic force microscopy and transmission electron microscopy showed that the polyvinyl polyamine gel had a porous and irregular bulk structure and was endowed with water storage. With the temperature rising from 30 °C to 60 °C, the transmittance of diethylenetriamine hydrogel decreased from 84.3% to 18.8%, indicating that a phase transition had occurred. After the polyvinyl polyamine hydrogel with low initial viscosity was injected into the formation in the liquid phase, the increase of the reservoir temperature caused it to turn into an elastomer, thereby migrating to the depth of the reservoir and achieving effective plugging. Polyvinyl polyamine hydrogel could improve the profile of heterogeneous layers significantly by forcing subsequent fluids into the low permeability zone in the form of elastomers in the medium temperature reservoirs of 40-60 °C. The novel environmentally responsive polyvinyl polyamine hydrogels, capable of phase transformation with temperature, exhibited superior performance in recovering residual oil, which was beneficial for applications in reservoir profile control and oilfield development.
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Affiliation(s)
- Jianxun Meng
- College of Chemistry and Chemical Engineering, Northeast Petroleum University, Daqing 163318, China;
- Research Institute of Oil Production Engineering, Daqing Oilfield Limited Company, Daqing 163453, China; (Q.L.); (X.L.); (L.W.); (Y.L.)
- Heilongjiang Provincial Key Laboratory of Oil and Gas Reservoir Stimulation, Daqing 163453, China
| | - Guoliang Mao
- College of Chemistry and Chemical Engineering, Northeast Petroleum University, Daqing 163318, China;
| | - Zhixuan Zhu
- Research Institute of Oil Production Engineering, Daqing Oilfield Limited Company, Daqing 163453, China; (Q.L.); (X.L.); (L.W.); (Y.L.)
- Heilongjiang Provincial Key Laboratory of Oil and Gas Reservoir Stimulation, Daqing 163453, China
| | - Qingsong Li
- Research Institute of Oil Production Engineering, Daqing Oilfield Limited Company, Daqing 163453, China; (Q.L.); (X.L.); (L.W.); (Y.L.)
- Heilongjiang Provincial Key Laboratory of Oil and Gas Reservoir Stimulation, Daqing 163453, China
| | - Xuesong Lin
- Research Institute of Oil Production Engineering, Daqing Oilfield Limited Company, Daqing 163453, China; (Q.L.); (X.L.); (L.W.); (Y.L.)
- Heilongjiang Provincial Key Laboratory of Oil and Gas Reservoir Stimulation, Daqing 163453, China
| | - Lichao Wang
- Research Institute of Oil Production Engineering, Daqing Oilfield Limited Company, Daqing 163453, China; (Q.L.); (X.L.); (L.W.); (Y.L.)
- Heilongjiang Provincial Key Laboratory of Oil and Gas Reservoir Stimulation, Daqing 163453, China
| | - Yiran Li
- Research Institute of Oil Production Engineering, Daqing Oilfield Limited Company, Daqing 163453, China; (Q.L.); (X.L.); (L.W.); (Y.L.)
- Heilongjiang Provincial Key Laboratory of Oil and Gas Reservoir Stimulation, Daqing 163453, China
| | - Yue Huang
- No. 2 Production Plant, Daqing Oilfield Limited Company, Daqing 163461, China;
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Gandla K, Kumar KP, Rajasulochana P, Charde MS, Rana R, Singh LP, Haque MA, Bakshi V, Siddiqui FA, Khan SL, Ganguly S. Fluorescent-Nanoparticle-Impregnated Nanocomposite Polymeric Gels for Biosensing and Drug Delivery Applications. Gels 2023; 9:669. [PMID: 37623124 PMCID: PMC10453855 DOI: 10.3390/gels9080669] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2023] [Revised: 08/05/2023] [Accepted: 08/15/2023] [Indexed: 08/26/2023] Open
Abstract
Nanocomposite polymeric gels infused with fluorescent nanoparticles have surfaced as a propitious category of substances for biomedical purposes owing to their exceptional characteristics. The aforementioned materials possess a blend of desirable characteristics, including biocompatibility, biodegradability, drug encapsulation, controlled release capabilities, and optical properties that are conducive to imaging and tracking. This paper presents a comprehensive analysis of the synthesis and characterization of fluorescent-nanoparticle-impregnated nanocomposite polymeric gels, as well as their biomedical applications, such as drug delivery, imaging, and tissue engineering. In this discourse, we deliberate upon the merits and obstacles linked to these substances, encompassing biocompatibility, drug encapsulation, optical characteristics, and scalability. The present study aims to provide an overall evaluation of the potential of fluorescent-nanoparticle-impregnated nanocomposite polymeric gels for biomedical applications. Additionally, emerging trends and future directions for research in this area are highlighted.
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Affiliation(s)
- Kumaraswamy Gandla
- Department of Pharmaceutical Analysis, Chaitanya (Deemed to be University), Hyderabad 500075, India
| | - K. Praveen Kumar
- Department of Pharmaceutical Chemistry, School of Pharmaceutical Sciences, Government of NCT of Delhi, Delhi Pharmaceutical Sciences and Research University (DPSRU), New Delhi 110017, India
| | - P. Rajasulochana
- Department of Microbiology, Saveetha Medical College and Hospitals, Saveetha Institute of Medical and Technical Sciences, Saveetha University, Kanchipuram 602105, India
| | - Manoj Shrawan Charde
- Department of Pharmaceutical Chemistry, Government College of Pharmacy, Karad 415124, India
| | - Ritesh Rana
- Department of Pharmaceutics, Himachal Institute of Pharmaceutical Education and Research (HIPER), Hamirpur 177033, India
| | - Laliteshwar Pratap Singh
- Department of Pharmaceutical Chemistry, Narayan Institute of Pharmacy, Gopal Narayan Singh University, Rohtas 821305, India
| | - M. Akiful Haque
- Department of Pharmaceutical Analysis, School of Pharmacy, Anurag University, Hyderabad 500088, India
| | - Vasudha Bakshi
- Department of Pharmaceutics, School of Pharmacy, Anurag University, Hyderabad 500088, India
| | - Falak A. Siddiqui
- Department of Pharmaceutical Chemistry, N.B.S. Institute of Pharmacy, Ausa 413520, India
- Department of Pharmaceutical Chemistry, School of Pharmacy, Anurag University, Hyderabad 500088, India
| | - Sharuk L. Khan
- Department of Pharmaceutical Chemistry, N.B.S. Institute of Pharmacy, Ausa 413520, India
- Department of Pharmaceutical Chemistry, School of Pharmacy, Anurag University, Hyderabad 500088, India
| | - S. Ganguly
- Bar-Ilan Institute for Nanotechnology and Advanced Materials, Ramat Gan 5290002, Israel
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Wang Z, Zhu Z, Jiang T, Liu J, Dong Y, Wu Y, Zhao M, Dai C, Li L. Probing the Effect of Young's Modulus on the Reservoir Regulation Abilities of Dispersed Particle Gels. Gels 2023; 9:gels9050402. [PMID: 37232994 DOI: 10.3390/gels9050402] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2023] [Revised: 05/09/2023] [Accepted: 05/10/2023] [Indexed: 05/27/2023] Open
Abstract
The mechanical strength of dispersed particle gels (DPGs), which can be directly characterized by Young's modulus, is an important parameter affecting reservoir regulation performance. However, the effect of reservoir conditions on the mechanical strength of DPGs, as well as the desired range of mechanical strength for optimum reservoir regulation performance, have not been systematically studied. In this paper, DPG particles with different Young's moduli were prepared and their corresponding migration performances, profile control capacities and enhanced oil recovery abilities were studied by simulated core experiments. The results showed that with increase in Young's modulus, the DPG particles exhibited improved performance in profile control as well as enhanced oil recovery. However, only the DPG particles with a modulus range of 0.19-0.762 kPa could achieve both adequate blockage in large pore throats and migration to deep reservoirs through deformation. Considering the material costs, applying DPG particles with moduli within the range of 0.19-0.297 kPa (polymer concentration: 0.25-0.4%; cross-linker concentration: 0.7-0.9%) would ensure optimum reservoir control performance. Direct evidence for the temperature and salt resistance of DPG particles was also obtained. When aged in reservoir conditions below 100 °C and at a salinity of 10 × 104 mg·L-1, the Young's modulus values of the DPG particle systems increased moderately with temperature or salinity, indicating a favorable impact of reservoir conditions on the reservoir regulation abilities of DPG particles. The studies in this paper indicated that the practical reservoir regulation performances of DPGs can be improved by adjusting the mechanical strength, providing basic theoretical guidance for the application of DPGs in efficient oilfield development.
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Affiliation(s)
- Zizhao Wang
- Key Laboratory of Unconventional Oil & Gas Development, China University of Petroleum (East China), Ministry of Education, Qingdao 266580, China
- Shandong Key Laboratory of Oilfield Chemistry, Department of Petroleum Engineering, China University of Petroleum (East China), Qingdao 266580, China
| | - Zhixuan Zhu
- Research Institute of Oil Production Engineering, PetroChina Daqing Oilfield Limited Company, Daqing 163453, China
- Heilongjiang Provincial Key Laboratory of Oil and Gas Reservoir Stimulation, PetroChina Daqing Oilfield Limited Company, Daqing 163453, China
| | - Tianyu Jiang
- Key Laboratory of Unconventional Oil & Gas Development, China University of Petroleum (East China), Ministry of Education, Qingdao 266580, China
- Shandong Key Laboratory of Oilfield Chemistry, Department of Petroleum Engineering, China University of Petroleum (East China), Qingdao 266580, China
| | - Jinming Liu
- Key Laboratory of Unconventional Oil & Gas Development, China University of Petroleum (East China), Ministry of Education, Qingdao 266580, China
- Shandong Key Laboratory of Oilfield Chemistry, Department of Petroleum Engineering, China University of Petroleum (East China), Qingdao 266580, China
| | - Yunbo Dong
- Key Laboratory of Unconventional Oil & Gas Development, China University of Petroleum (East China), Ministry of Education, Qingdao 266580, China
- Shandong Key Laboratory of Oilfield Chemistry, Department of Petroleum Engineering, China University of Petroleum (East China), Qingdao 266580, China
| | - Yining Wu
- Key Laboratory of Unconventional Oil & Gas Development, China University of Petroleum (East China), Ministry of Education, Qingdao 266580, China
- Shandong Key Laboratory of Oilfield Chemistry, Department of Petroleum Engineering, China University of Petroleum (East China), Qingdao 266580, China
| | - Mingwei Zhao
- Key Laboratory of Unconventional Oil & Gas Development, China University of Petroleum (East China), Ministry of Education, Qingdao 266580, China
- Shandong Key Laboratory of Oilfield Chemistry, Department of Petroleum Engineering, China University of Petroleum (East China), Qingdao 266580, China
| | - Caili Dai
- Key Laboratory of Unconventional Oil & Gas Development, China University of Petroleum (East China), Ministry of Education, Qingdao 266580, China
- Shandong Key Laboratory of Oilfield Chemistry, Department of Petroleum Engineering, China University of Petroleum (East China), Qingdao 266580, China
| | - Lin Li
- Key Laboratory of Unconventional Oil & Gas Development, China University of Petroleum (East China), Ministry of Education, Qingdao 266580, China
- Shandong Key Laboratory of Oilfield Chemistry, Department of Petroleum Engineering, China University of Petroleum (East China), Qingdao 266580, China
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Biodegradable chitosan-graphene oxide as an affective green filler for improving of properties in epoxy nanocomposites. Int J Biol Macromol 2023; 233:123550. [PMID: 36740127 DOI: 10.1016/j.ijbiomac.2023.123550] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2022] [Revised: 01/16/2023] [Accepted: 01/31/2023] [Indexed: 02/05/2023]
Abstract
In this work, we investigated the effect of biodegradable Chitosan-encapsulated Graphene Oxide (CGO) on the morphology and properties of epoxy composites prepared using solution mixing with different filler loadings. The microstructures and properties of chitosan-GO and composites were studied using FTIR, XRD, SEM, TEM, tensile, impact, bending analysis, DMTA and TG tests. Microstructural observations confirmed that the CGO composition and its content in the matrix affected the distribution of fillers in the epoxy matrix. Mechanical and thermal tests indicated that the loading level of CGO and the ratio of chitosan to GO were the main factors that changed the strength of epoxy/CGOs composites. The tensile analysis confirmed that nanocomposites containing CGO exhibited a 65 % increase in elastic modulus due to the improved load transfer as a result of interfacial interactions between CGO and the matrix. DMTA analysis showed that the presence of CGO in the epoxy matrix increased Tg of the composite by ~30 °C. In the TGA test, although the introduction of CGO caused higher decomposition temperature of the CGO filled resins. CGO enhanced the final properties of epoxy-based nanocomposites as a result of the synergistic effect of chitosan and GO and the formation of 3-D CGO structures in the epoxy matrix.
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Memisoglu G, Murugesan RC, Zubia J, Rozhin AG. Graphene Nanocomposite Membranes: Fabrication and Water Treatment Applications. MEMBRANES 2023; 13:145. [PMID: 36837648 PMCID: PMC9965488 DOI: 10.3390/membranes13020145] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/31/2022] [Revised: 01/14/2023] [Accepted: 01/18/2023] [Indexed: 05/31/2023]
Abstract
Graphene, a two-dimensional hexagonal honeycomb carbon structure, is widely used in membrane technologies thanks to its unique optical, electrical, mechanical, thermal, chemical and photoelectric properties. The light weight, mechanical strength, anti-bacterial effect, and pollution-adsorption properties of graphene membranes are valuable in water treatment studies. Incorporation of nanoparticles like carbon nanotubes (CNTs) and metal oxide into the graphene filtering nanocomposite membrane structure can provide an improved photocatalysis process in a water treatment system. With the rapid development of graphene nanocomposites and graphene nanocomposite membrane-based acoustically supported filtering systems, including CNTs and visible-light active metal oxide photocatalyst, it is necessary to develop the researches of sustainable and environmentally friendly applications that can lead to new and groundbreaking water treatment systems. In this review, characteristic properties of graphene and graphene nanocomposites are examined, various methods for the synthesis and dispersion processes of graphene, CNTs, metal oxide and polymer nanocomposites and membrane fabrication and characterization techniques are discussed in details with using literature reports and our laboratory experimental results. Recent membrane developments in water treatment applications and graphene-based membranes are reviewed, and the current challenges and future prospects of membrane technology are discussed.
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Affiliation(s)
- Gorkem Memisoglu
- Department of Communications Engineering, Escuela de Ingeniería de Bilbao, University of the Basque Country (UPV/EHU), E-48013 Bilbao, Spain
- Department of Electronics Technology, Istiklal University, Kahramanmaras 46300, Türkiye
| | | | - Joseba Zubia
- Department of Communications Engineering, Escuela de Ingeniería de Bilbao, University of the Basque Country (UPV/EHU), E-48013 Bilbao, Spain
| | - Aleksey G. Rozhin
- Aston Institute of Photonic Technologies, Aston University, Birmingham B4 7ET, UK
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