1
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Investigation of AOT/isooctane/water reverse microemulsion system with the presence of different mass ratios of SDS: Conductivity and water solubilization. Colloids Surf A Physicochem Eng Asp 2022. [DOI: 10.1016/j.colsurfa.2022.129271] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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2
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Teng H, Wang N, Zhang Y, Wang J, Chen Y. Influences of alkanes on the phase behaviors of system of cationic–anionic surfactants. J DISPER SCI TECHNOL 2021. [DOI: 10.1080/01932691.2021.1915159] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Affiliation(s)
- Hongni Teng
- College of Chemical and Biological Engineering, Shandong University of Science and Technology, Qingdao, P. R. China
| | - Na Wang
- College of Chemical and Biological Engineering, Shandong University of Science and Technology, Qingdao, P. R. China
| | - Yao Zhang
- College of Chemical and Biological Engineering, Shandong University of Science and Technology, Qingdao, P. R. China
| | - Jingjing Wang
- College of Chemical and Biological Engineering, Shandong University of Science and Technology, Qingdao, P. R. China
| | - Yong Chen
- College of Chemical and Biological Engineering, Shandong University of Science and Technology, Qingdao, P. R. China
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3
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Shi L, Zhang D, Zhao J, Yin M, Liang A, Ghosh S. Small organic molecules act as a trigger in an "unzippering" mechanism to facilitate carbon nanotube dispersion. THE SCIENCE OF THE TOTAL ENVIRONMENT 2021; 758:143620. [PMID: 33213919 DOI: 10.1016/j.scitotenv.2020.143620] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/08/2020] [Revised: 10/26/2020] [Accepted: 11/07/2020] [Indexed: 06/11/2023]
Abstract
In binary dispersing agents system, the contribution and roles of different sized molecules to carbon nanotubes (CNTs) dispersion remain unclear, which hinders the understanding of the environmental behaviour and risks of CNTs. This study compared the dispersion of CNTs by m-nitrobenzoic acid (NBA), trans-cinnamic acid (TCA), tannic acid (TA), and their mixtures. The dispersion efficiency of CNTs significantly reduced with the increased solid-phase concentration (Qe) of TA due to the adsorption of TA on newly exposed CNTs surfaces. However, the CNTs dispersion efficiency by NBA or TCA was independent of Qe because the dispersed CNTs surface was completely occupied by NBA or TCA without new exposed sites available for subsequent adsorption. The mixture of NBA or TCA with TA significantly enhanced the dispersion efficiency of CNTs, indicating a synergistic effect of CNTs dispersion. The addition of NBA or TCA decreased the hydrodynamic diameter of CNTs dispersed by TA, which indicated that NBA or TCA facilitated TA wedging into CNTs bundles for more complete separation of CNTs. This study highlighted the triggering effect of small molecules in the "unzippering" mechanism for improving the dispersing efficiency of CNTs by large molecules.
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Affiliation(s)
- Lin Shi
- Yunnan Key Lab of Soil Carbon Sequestration and Pollution Control, Faculty of Environmental Science & Engineering, Kunming University of Science & Technology, Kunming 650500, China
| | - Di Zhang
- Yunnan Key Lab of Soil Carbon Sequestration and Pollution Control, Faculty of Environmental Science & Engineering, Kunming University of Science & Technology, Kunming 650500, China.
| | - Jinfeng Zhao
- Yunnan Key Lab of Soil Carbon Sequestration and Pollution Control, Faculty of Environmental Science & Engineering, Kunming University of Science & Technology, Kunming 650500, China
| | - Mengnan Yin
- Yunnan Key Lab of Soil Carbon Sequestration and Pollution Control, Faculty of Environmental Science & Engineering, Kunming University of Science & Technology, Kunming 650500, China
| | - Aiping Liang
- School of Environmental & Material Engineering, Yantai University, Yantai 264005, China
| | - Saikat Ghosh
- Yunnan Key Lab of Soil Carbon Sequestration and Pollution Control, Faculty of Environmental Science & Engineering, Kunming University of Science & Technology, Kunming 650500, China
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4
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Wang Y, Ji W, Xu Y, Zou L, Lu H, Sun C. Dispersion and fluorescence properties of multiwalled carbon nanotubes modified with hyperbranched poly(phenylalanine-lysine). Colloids Surf A Physicochem Eng Asp 2021. [DOI: 10.1016/j.colsurfa.2020.125557] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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Deng R, Gao X, Hou J, Lin D. Multi-omics analyses reveal molecular mechanisms for the antagonistic toxicity of carbon nanotubes and ciprofloxacin to Escherichia coli. THE SCIENCE OF THE TOTAL ENVIRONMENT 2020; 726:138288. [PMID: 32305750 DOI: 10.1016/j.scitotenv.2020.138288] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/24/2020] [Revised: 03/26/2020] [Accepted: 03/27/2020] [Indexed: 05/05/2023]
Abstract
With the increasing production and application, engineered nanomaterials (ENMs) are being discharged into the environment, where they can interact with co-existing contaminants, causing complicated joint toxicity to organisms that needs to be studied. The case study of ENMs-contaminant joint toxicity and the understanding of relative mechanisms are very insufficient, particularly the mechanisms of molecular interactions and governing processes. Herein, a typical ENMs, carbon nanotubes (CNTs, 0-60 mg/L), and a common antibiotic, ciprofloxacin (CIP, 0-900 mg/L), were selected as the analytes. Their joint toxicity to a model microbe Escherichia coli was specifically investigated via biochemical, transcriptomics, and metabolomics approaches. The result revealed an antagonistic effect on growth inhibition between CNTs and CIP. Mitigations in cell membrane disruption and oxidative stress were involved in the antagonistic action. CIP (48.8-244 mg/L) decreased the bioaccumulation of CNTs (7.2 mg/L) via reducing cell-surface hydrophobicity and hindering the bio-nano interaction, which could attenuate the toxicity of CNTs to bacteria. CNTs (7.2 and 14.4 mg/L) alleviated the disturbance of CIP (122 and 244 mg/L) to gene expressions especially related to nitrogen compound metabolism, oxidoreductase activity, and iron-sulfur protein maturation, probably through relieving the CIP-induced inhibition of DNA gyrase activity. Further, CNTs (7.2 and 14.4 mg/L) offset the impact of CIP (122 and 244 mg/L) on bacterial metabolome via the regulation of biosynthesis of unsaturated fatty acids and metabolisms of some amino acids and glutathione. The findings shed new light on the molecular mechanisms by which ENMs present joint effect on contaminant toxicity, and provide important information for risk assessments of CNTs and fluoroquinolones in the environment.
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Affiliation(s)
- Rui Deng
- Department of Environmental Science, Zhejiang University, Hangzhou 310058, China; Zhejiang Provincial Key Laboratory of Organic Pollution Process and Control, Zhejiang University, Hangzhou 310058, China
| | - Xuan Gao
- Department of Environmental Science, Zhejiang University, Hangzhou 310058, China; Zhejiang Provincial Key Laboratory of Organic Pollution Process and Control, Zhejiang University, Hangzhou 310058, China
| | - Jie Hou
- Department of Environmental Science, Zhejiang University, Hangzhou 310058, China; Zhejiang Provincial Key Laboratory of Organic Pollution Process and Control, Zhejiang University, Hangzhou 310058, China
| | - Daohui Lin
- Department of Environmental Science, Zhejiang University, Hangzhou 310058, China; Zhejiang Provincial Key Laboratory of Organic Pollution Process and Control, Zhejiang University, Hangzhou 310058, China.
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6
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Zhang D, Qiu J, Shi L, Liu Y, Pan B, Xing B. The mechanisms and environmental implications of engineered nanoparticles dispersion. THE SCIENCE OF THE TOTAL ENVIRONMENT 2020; 722:137781. [PMID: 32199363 DOI: 10.1016/j.scitotenv.2020.137781] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/14/2020] [Revised: 02/28/2020] [Accepted: 03/05/2020] [Indexed: 06/10/2023]
Abstract
Dispersion of engineered nanoparticles (ENPs) has drawn special research attentions because the environmental behavior, risks, and applications of ENPs are greatly dependent on their dispersing status. This review summarizes the latest research progress of dispersion mechanisms, environmental applications in contaminants adsorption, and toxicity of ENPs dispersed in liquid and in solid matrix (3D-ENPs). Dispersion mechanisms of ENPs, including steric hindrance, electrostatic repulsion and "micelle wrapping" are well understood in single dispersing agent, however, the prediction of ENPs dispersion in real environments is not straightforward because of the diversity of structures, components, and properties of natural organic molecule mixtures. The adsorption characteristics, depending on the exposed surface areas in liquid, are significantly different between dispersed and aggregated ENPs. Comparing with the aggregated ENPs, the toxicity of dispersed ENPs is generally enhanced due to the increased uptake, released metal ions, carried contaminants, and induced ROS. 3D-ENPs not only inherit the excellent adsorption performance of ENPs dispersed in liquid, but also are beneficial to the separation and recycle from aqueous solutions due to their 3D rigid structures. However, the adsorption mechanisms as affected by environmental conditions are still unclear. Additionally, the potential risks of 3D-ENPs should be paid more attentions, with an emphasis on free radicals and stability of 3D structure.
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Affiliation(s)
- Di Zhang
- Faculty of Environmental Science & Engineering, Kunming University of Science & Technology, Kunming 650500, China; Yunnan Key Lab of Soil Carbon Sequestration and Pollution Control, Kunming 650500, China
| | - Junke Qiu
- Faculty of Environmental Science & Engineering, Kunming University of Science & Technology, Kunming 650500, China; Yunnan Key Lab of Soil Carbon Sequestration and Pollution Control, Kunming 650500, China
| | - Lin Shi
- Faculty of Environmental Science & Engineering, Kunming University of Science & Technology, Kunming 650500, China; Yunnan Key Lab of Soil Carbon Sequestration and Pollution Control, Kunming 650500, China
| | - Yang Liu
- Faculty of Environmental Science & Engineering, Kunming University of Science & Technology, Kunming 650500, China; Yunnan Key Lab of Soil Carbon Sequestration and Pollution Control, Kunming 650500, China
| | - Bo Pan
- Faculty of Environmental Science & Engineering, Kunming University of Science & Technology, Kunming 650500, China; Yunnan Key Lab of Soil Carbon Sequestration and Pollution Control, Kunming 650500, China.
| | - Baoshan Xing
- Stockbridge School of Agriculture, University of Massachusetts, Amherst, MA 01003, United States.
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Wu Z, Li Y, Li J, Wang M, Wang Z. Interaction and Properties of the Synthesized Anionic Surfactant with CTAB: An Experimental and Theoretical Investigation. ChemistrySelect 2020. [DOI: 10.1002/slct.201903814] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Zhifang Wu
- China Research Institute of Daily Chemistry Co., Ltd Taiyuan 030001 China
| | - Yunling Li
- China Research Institute of Daily Chemistry Co., Ltd Taiyuan 030001 China
| | - Jun Li
- China Research Institute of Daily Chemistry Co., Ltd Taiyuan 030001 China
| | - Mengwei Wang
- China Research Institute of Daily Chemistry Co., Ltd Taiyuan 030001 China
| | - Zhifei Wang
- China Research Institute of Daily Chemistry Co., Ltd Taiyuan 030001 China
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8
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Kassem A, Ayoub GM, Malaeb L. Antibacterial activity of chitosan nano-composites and carbon nanotubes: A review. THE SCIENCE OF THE TOTAL ENVIRONMENT 2019; 668:566-576. [PMID: 30856567 DOI: 10.1016/j.scitotenv.2019.02.446] [Citation(s) in RCA: 59] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/03/2019] [Revised: 02/27/2019] [Accepted: 02/27/2019] [Indexed: 06/09/2023]
Abstract
Bacteriological contamination of water sources is a major challenge that has a detrimental impact on both the environment and human health. This imposes the search for the most efficient disinfectant. Despite their antibacterial efficiency, traditional methods can often form disinfection byproducts through their reaction with organic and inorganic compounds. Substitutes for conventional bacterial inactivation methods should not produce harmful byproducts and must also be cost effective. Nanotechnology is an attractive option that is suited for surface reactions as nanostructures offer large surface to volume ratios. Technologies using chitosan-modified nanocomposites and carbon nanotubes have proven to offer promising alternatives for bacterial inactivation. To enhance their antibacterial efficiency, such technologies have been modified chemically and physically and have as well been associated with other treatment techniques. However, despite their high bacterial disinfection efficacy and lack of treatment byproducts, the vagueness in bacterial inactivation mechanisms and complexity in materials preparation have often obscured their wide scale application. The aim of this manuscript is to review the recent advances in bacterial disinfection using nanomaterials, in the form of chitosan and carbon nanotubes. The rapid rate of research and the notable progress in this area dictate the frequent compilation and dissemination of recent introductions to this field. Existing gaps in the literature are thus also highlighted and reported discrepancies are pinpointed so that roadmaps for future studies may be figured.
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Affiliation(s)
- Assaad Kassem
- Civil and Environmental Engineering Department, American University of Beirut, P.O. Box 11-0236, Beirut, Lebanon
| | - George M Ayoub
- Civil and Environmental Engineering Department, American University of Beirut, P.O. Box 11-0236, Beirut, Lebanon
| | - Lilian Malaeb
- Civil and Environmental Engineering Department, American University of Beirut, P.O. Box 11-0236, Beirut, Lebanon.
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9
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Synthesis and properties of biodegradable cationic gemini surfactants with diester and flexible spacers. J Mol Liq 2017. [DOI: 10.1016/j.molliq.2017.05.092] [Citation(s) in RCA: 43] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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10
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Deng R, Lin D, Zhu L, Majumdar S, White JC, Gardea-Torresdey JL, Xing B. Nanoparticle interactions with co-existing contaminants: joint toxicity, bioaccumulation and risk. Nanotoxicology 2017. [DOI: 10.1080/17435390.2017.1343404] [Citation(s) in RCA: 156] [Impact Index Per Article: 22.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Affiliation(s)
- Rui Deng
- Department of Environmental Science, Zhejiang University, Hangzhou, China
| | - Daohui Lin
- Department of Environmental Science, Zhejiang University, Hangzhou, China
- Zhejiang Provincial Key Laboratory of Organic Pollution Process and Control, Zhejiang University, Hangzhou, China
| | - Lizhong Zhu
- Department of Environmental Science, Zhejiang University, Hangzhou, China
- Zhejiang Provincial Key Laboratory of Organic Pollution Process and Control, Zhejiang University, Hangzhou, China
| | | | - Jason C. White
- The Connecticut Agricultural Experiment Station, New Haven, CT, USA
| | - Jorge L. Gardea-Torresdey
- Department of Chemistry, The University of Texas at El Paso, El Paso, TX, USA
- University of California Center for Environmental Implications of Nanotechnology (UC CEIN), The University of Texas at El Paso, El Paso, TX, USA
| | - Baoshan Xing
- Stockbridge School of Agriculture, University of Massachusetts, Amherst, MA, USA
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