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Liu Y, Liu L, Zhu X, Zhang H, Luo Y, Wang X, Xu P, Li B. What Determines the Low-Friction Mechanism of the Silicon-Doped Diamond-like Carbon Film in a Water Environment: An Atomic-Level Understanding. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2024; 40:10449-10459. [PMID: 38717310 DOI: 10.1021/acs.langmuir.3c03352] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2024]
Abstract
It is widely acknowledged that doping silicon can significantly enhance the friction performance of diamond-like carbon (DLC) films in a water environment. However, the mechanism of low friction caused by doped silicon is still highly controversial. Therefore, this article compares the interface interaction between DLC and Si-DLC films in a water environment through first-principles calculations of physisorption and chemisorption effects. The results indicate that water molecules are predominantly chemically adsorbed rather than physically adsorbed on the Si-DLC surface. Further study reveals that when OH-termination is formed on the Si-DLC surface, water molecules are predominantly physically adsorbed rather than chemically adsorbed on the Si-DLC hydroxylation surface. Consequently, a more stable hydration layer is formed on the surface through the hydrogen bond network formed by Si-OH groups, ultimately leading to lower friction. Moreover, molecular dynamics simulations further suggest that the lower friction coefficient of Si-DLC films in a water environment may be due to more water molecules at the friction interface and fewer interface covalent bonds. In short, the low-friction coefficient of the Si-DLC film in a water environment may be caused not only by the chemisorption of water molecules on its surface but also by the physisorption of water molecules on the Si-DLC film after surface hydroxylation.
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Affiliation(s)
- Yunhai Liu
- School of Mechatronic Engineering, Southwest Petroleum University, Chengdu 610500, China
| | - Ligao Liu
- School of Mechatronic Engineering, Southwest Petroleum University, Chengdu 610500, China
| | - Xiaohua Zhu
- School of Mechatronic Engineering, Southwest Petroleum University, Chengdu 610500, China
| | - Hu Zhang
- School of Mechatronic Engineering, Southwest Petroleum University, Chengdu 610500, China
| | - Yiyao Luo
- School of Mechatronic Engineering, Southwest Petroleum University, Chengdu 610500, China
| | - Xiaowen Wang
- School of Mechatronic Engineering, Southwest Petroleum University, Chengdu 610500, China
| | - Penghui Xu
- School of Mechatronic Engineering, Southwest Petroleum University, Chengdu 610500, China
| | - Bo Li
- School of Mechatronic Engineering, Southwest Petroleum University, Chengdu 610500, China
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2
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Yuan J, Wang Z, Dong J, Gao M, Yang F, Sun H. Effect of resveratrol on SH-SY5Y cells studied by atomic force microscopy. Micron 2024; 177:103577. [PMID: 38141333 DOI: 10.1016/j.micron.2023.103577] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2023] [Revised: 12/01/2023] [Accepted: 12/10/2023] [Indexed: 12/25/2023]
Abstract
In this paper, the effects of resveratrol on the viability, morphology, biomechanics and bioelectricity of SH-SY5Y cells were studied by atomic force microscopy. MTT assay showed that resveratrol had a dose effect on SH-SY5Y cells, and its activity was related to drug concentration and drug action time. With the increase of resveratrol concentration or the extension of action time, the activity of SH-SY5Y cells decreased obviously. Atomic force microscope (AFM) was employed to quantitatively analyze the physical changes of cells. AFM study shows that resveratrol can transform SH-SY5Y cells from spindle to sphere, and increase the cell height and decrease the cell adhesion. Also, the elastic modulus increases under the action of low concentration of resveratrol decreases under the action of high concentration of resveratrol, and the electric signal decreases. This study reveals the impact of resveratrol on SH-SY5Y cells from the biological and biophysical perspectives, which is helpful for a more comprehensive understanding of the interaction mechanism between resveratrol and SH-SY5Y cells. These techniques have potential applications in evaluating the effects of chemical substances on cells and screening targeted drugs.
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Affiliation(s)
- Jiayao Yuan
- International Research Centre for Nano Handling and Manufacturing of China, Changchun University of Science and Technology, Changchun, China; Centre for Opto/Bio-Nano Measurement and Manufacturing, Zhongshan Institute of Changchun University of Science and Technology, Zhongshan, China; Ministry of Education Key Laboratory for Cross-Scale Micro and Nano Manufacturing, Changchun University of Science and Technology, Changchun, China
| | - Zuobin Wang
- International Research Centre for Nano Handling and Manufacturing of China, Changchun University of Science and Technology, Changchun, China; Centre for Opto/Bio-Nano Measurement and Manufacturing, Zhongshan Institute of Changchun University of Science and Technology, Zhongshan, China; Ministry of Education Key Laboratory for Cross-Scale Micro and Nano Manufacturing, Changchun University of Science and Technology, Changchun, China; JR3CN & IRAC, University of Bedfordshire, Luton, UK.
| | - Jianjun Dong
- International Research Centre for Nano Handling and Manufacturing of China, Changchun University of Science and Technology, Changchun, China; Centre for Opto/Bio-Nano Measurement and Manufacturing, Zhongshan Institute of Changchun University of Science and Technology, Zhongshan, China; Ministry of Education Key Laboratory for Cross-Scale Micro and Nano Manufacturing, Changchun University of Science and Technology, Changchun, China
| | - Mingyan Gao
- International Research Centre for Nano Handling and Manufacturing of China, Changchun University of Science and Technology, Changchun, China; Centre for Opto/Bio-Nano Measurement and Manufacturing, Zhongshan Institute of Changchun University of Science and Technology, Zhongshan, China; Ministry of Education Key Laboratory for Cross-Scale Micro and Nano Manufacturing, Changchun University of Science and Technology, Changchun, China
| | - Fan Yang
- International Research Centre for Nano Handling and Manufacturing of China, Changchun University of Science and Technology, Changchun, China; Centre for Opto/Bio-Nano Measurement and Manufacturing, Zhongshan Institute of Changchun University of Science and Technology, Zhongshan, China; Ministry of Education Key Laboratory for Cross-Scale Micro and Nano Manufacturing, Changchun University of Science and Technology, Changchun, China
| | - Hao Sun
- International Research Centre for Nano Handling and Manufacturing of China, Changchun University of Science and Technology, Changchun, China; Centre for Opto/Bio-Nano Measurement and Manufacturing, Zhongshan Institute of Changchun University of Science and Technology, Zhongshan, China; Ministry of Education Key Laboratory for Cross-Scale Micro and Nano Manufacturing, Changchun University of Science and Technology, Changchun, China
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Gisbert VG, Garcia R. Fast and high-resolution mapping of van der Waals forces of 2D materials interfaces with bimodal AFM. NANOSCALE 2023; 15:19196-19202. [PMID: 37982209 DOI: 10.1039/d3nr05274e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/21/2023]
Abstract
High-spatial resolution mapping of van der Waals forces is relevant in several fields ranging from nanotechnology to colloidal science. The emergence of two-dimensional heterostructures assembled by van der Waals interactions has enhanced the interest of those measurements. Several AFM methods have been developed to measure the adhesion force between an AFM probe and the material of interest. However, a reliable and high-resolution method to measure the Hamaker constant remains elusive. We demonstrate that an atomic force microscope operated in a bimodal configuration enables fast, quantitative, and high-resolution mapping of the Hamaker constant of interfaces. The method is applied to map the Hamaker constant of monolayer, bilayer and multilayer MoS2 surfaces. Those interfaces are characterized with Hamaker constant and spatial resolutions of, respectively, 0.1 eV and 50 nm.
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Affiliation(s)
- Victor G Gisbert
- Instituto de Ciencia de Materiales de Madrid, CSIC, c/Sor Juana Ines de la Cruz 3, 28049 Madrid, Spain.
| | - Ricardo Garcia
- Instituto de Ciencia de Materiales de Madrid, CSIC, c/Sor Juana Ines de la Cruz 3, 28049 Madrid, Spain.
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Zhao H, Cao Z, Sun D, Chen X, Kang S, Zheng Y, Sun D. Ultrasonic neural regulation over two-dimensional graphene analog biomaterials: Enhanced PC12 cell differentiation under diverse ultrasond excitation. ULTRASONICS SONOCHEMISTRY 2023; 101:106678. [PMID: 37984209 PMCID: PMC10696118 DOI: 10.1016/j.ultsonch.2023.106678] [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: 09/20/2023] [Revised: 10/30/2023] [Accepted: 11/02/2023] [Indexed: 11/22/2023]
Abstract
Two-dimensional (2D) biomaterials, with unique planar topology and quantum effect, have been widely recognized as a versatile nanoplatform for bioimaging, drug delivery and tissue engineering. However, during the complex application of nerve repair, in which inflammatory microenvironment control is imperative, the gentle manipulation and trigger of 2D biomaterials with inclusion and diversity is still challenging. Herein, inspired by the emerging clinical progress of ultrasound neuromodulation, we systematically studied ultrasound-excited 2D graphene analogues (graphene, graphene oxide, reduced graphene oxide (rGO) and carbon nitride) to explore their feasibility, accessibility, and adjustability for ultrasound-induced nerve repair in vitro. Quantitative observation of cell differentiation morphology demonstrates that PC12 cells added with rGO show the best compatibility and differentiation performance under the general ultrasound mode (0.5 w/cm2, 2 min/day) compared with graphene, graphene oxide and carbon nitride. Furthermore, the general condition can be improved by using a higher intensity of 0.7 w/cm2, but it cannot go up further. Later, ultrasonic frequency and duty cycle conditions were investigated to demonstrate the unique and remarkable inclusion and diversity of ultrasound over conventional electrical and surgical means. The pulse waveform with power of 1 MHz and duty cycle of 50 % may be even better, while the 3 MHz and 100 % duty cycle may not work. Overall, various graphene analog materials can be regarded as biosafe and accessible in both fundamental research and clinical ultrasound therapy, even for radiologists without material backgrounds. The enormous potential of diverse and personalized 2D biomaterials-based therapies can be expected to provide a new mode of ultrasound neuromodulation.
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Affiliation(s)
- Huijia Zhao
- Jinzhou Medical University Graduate Training Base (Shanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine), 121001 Jinzhou, PR China; Department of Ultrasound in Medicine, Shanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai Institute of Ultrasound in Medicine, Shanghai 200233, PR China
| | - Ziqi Cao
- Department of Ultrasound in Medicine, Shanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai Institute of Ultrasound in Medicine, Shanghai 200233, PR China
| | - Dandan Sun
- Department of Ultrasonography, Hainan General Hospital/Hainan Affiliated Hospital of Hainan Medical University, Haikou 570311, PR China
| | - Xingzhou Chen
- School of Materials and Chemistry, Institute of Bismuth, Shanghai Collaborative Innovation Center of Energy Therapy for Tumors, University of Shanghai for Science and Technology, Shanghai 200093, China
| | - Shifei Kang
- Institute of Photochemistry and Photofunctional Materials (IPPM), University of Shanghai for Science and Technology, 200093 Shanghai, PR China.
| | - Yuanyi Zheng
- Department of Ultrasound in Medicine, Shanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai Institute of Ultrasound in Medicine, Shanghai 200233, PR China.
| | - Di Sun
- Department of Ultrasound in Medicine, Shanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai Institute of Ultrasound in Medicine, Shanghai 200233, PR China.
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Wan L, Song Z, Wang Z, Dong J, Chen Y, Hu J. Repair effect of Centella asiatica (L.) extract on damaged HaCaT cells studied by atomic force microscopy. J Microsc 2023; 292:148-157. [PMID: 37855555 DOI: 10.1111/jmi.13238] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2023] [Revised: 10/01/2023] [Accepted: 10/17/2023] [Indexed: 10/20/2023]
Abstract
People's choice of cosmetics is no longer just 'Follow the trend', but pays more attention to the ingredients of cosmetics, whether the ingredients of cosmetics are beneficial to people's skin health; therefore, more and more skin-healthy ingredients have been discovered and used in cosmetics. In this work, atomic force microscope (AFM) is used to provide physical information about biomolecules and living cells; it brings us a new method of high-precision physical measurement. Centella asiatica (L.) extract has the ability to promote skin wound healing, but its healing effect on damaged HaCaT cells needs to be investigated, which plays a key role in judging the effectiveness of skincare ingredients. The objective of this study was to explore the impact of Centella asiatica (L.) extract on ethanol-damaged human immortalised epidermal HaCaT cells based on AFM. We established a model of cellular damage and evaluated cell viability using the MTT assay. The physical changes of cell height, roughness, adhesion and Young's modulus were measured by AFM. The findings indicated that the Centella asiatica (L.) extract had a good repair effect on injured HaCaT cells, and the optimal concentration was 75 μg/mL.
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Affiliation(s)
- Linlin Wan
- International Research Centre for Nano Handling and Manufacturing of China, Changchun University of Science and Technology, Changchun, China
- Centre for Opto/Bio-Nano Measurement and Manufacturing, Zhongshan Institute of Changchun University of Science and Technology, Zhongshan, China
- Ministry of Education Key Laboratory for Cross-Scale Micro and Nano Manufacturing, Changchun University of Science and Technology, Changchun, China
| | - Zhengxun Song
- International Research Centre for Nano Handling and Manufacturing of China, Changchun University of Science and Technology, Changchun, China
- Centre for Opto/Bio-Nano Measurement and Manufacturing, Zhongshan Institute of Changchun University of Science and Technology, Zhongshan, China
- Ministry of Education Key Laboratory for Cross-Scale Micro and Nano Manufacturing, Changchun University of Science and Technology, Changchun, China
| | - Zuobin Wang
- International Research Centre for Nano Handling and Manufacturing of China, Changchun University of Science and Technology, Changchun, China
- Centre for Opto/Bio-Nano Measurement and Manufacturing, Zhongshan Institute of Changchun University of Science and Technology, Zhongshan, China
- Ministry of Education Key Laboratory for Cross-Scale Micro and Nano Manufacturing, Changchun University of Science and Technology, Changchun, China
- JR3CN & IRAC, University of Bedfordshire, Luton, UK
| | - Jianjun Dong
- International Research Centre for Nano Handling and Manufacturing of China, Changchun University of Science and Technology, Changchun, China
- Centre for Opto/Bio-Nano Measurement and Manufacturing, Zhongshan Institute of Changchun University of Science and Technology, Zhongshan, China
- Ministry of Education Key Laboratory for Cross-Scale Micro and Nano Manufacturing, Changchun University of Science and Technology, Changchun, China
| | - Yujuan Chen
- International Research Centre for Nano Handling and Manufacturing of China, Changchun University of Science and Technology, Changchun, China
- Centre for Opto/Bio-Nano Measurement and Manufacturing, Zhongshan Institute of Changchun University of Science and Technology, Zhongshan, China
- Ministry of Education Key Laboratory for Cross-Scale Micro and Nano Manufacturing, Changchun University of Science and Technology, Changchun, China
- School of Life Sciences, Changchun University of Science and Technology, Changchun, China
| | - Jing Hu
- Centre for Opto/Bio-Nano Measurement and Manufacturing, Zhongshan Institute of Changchun University of Science and Technology, Zhongshan, China
- School of Materials Science and Engineering, Changchun University of Science and Technology, Changchun, China
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6
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Zhu J, Tian Y, Cao L, Hu J, Yan J, Wang Z, Liu X. Comparison of the effects of AgNPs on the morphological and mechanical characteristics of cancerous cells. J Microsc 2023; 289:187-197. [PMID: 36565476 DOI: 10.1111/jmi.13166] [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: 04/13/2022] [Revised: 11/04/2022] [Accepted: 12/20/2022] [Indexed: 12/25/2022]
Abstract
Currently, silver nanoparticles (AgNPs) are the most produced nanoparticles in global market and have been widely utilized in the biomedical field. Here, we investigated the morphological and mechanical effects of AgNPs on cancerous cells of A549 cells and SMMC-7721 cells with atomic force microscope (AFM). The influence of AgNPs on the morphological properties and mechanical properties of cancerous cells were characterized utilizing the force-volume (FV) mode and force spectroscopy (FS) mode of AFM measurement. We mainly focus on the comparison of the effects of AgNPs on the two types of cancerous cells based on the fitting results of calculating the Young's moduli utilizing the Sneddon model. The results showed that the morphology changed little, but the mechanical properties of height, roughness, adhesion force and Young's moduli of two cancerous cells varied significantly with the stimulation of different concentrations of AgNPs. This research has provided insights into the classification and characterization of the effects of the various concentrations of AgNPs on the cancerous cells in vitro by utilizing AFM methodologies for disease therapy.
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Affiliation(s)
- Jiajing Zhu
- School of Engineering, University of Warwick, Coventry, UK.,Wheeled System Technology Department, China North Vehicle Research Institute, Beijing, China
| | - Yanling Tian
- School of Engineering, University of Warwick, Coventry, UK
| | - Liang Cao
- International Research Centre for Nano Handling and Manufacturing of China, Changchun University of Science and Technology, Changchun, China.,Ministry of Education Key Laboratory for Cross-Scale Micro and Nano Manufacturing, Changchun University of Science and Technology, Changchun, China
| | - Jing Hu
- International Research Centre for Nano Handling and Manufacturing of China, Changchun University of Science and Technology, Changchun, China.,Ministry of Education Key Laboratory for Cross-Scale Micro and Nano Manufacturing, Changchun University of Science and Technology, Changchun, China
| | - Jin Yan
- International Research Centre for Nano Handling and Manufacturing of China, Changchun University of Science and Technology, Changchun, China.,Ministry of Education Key Laboratory for Cross-Scale Micro and Nano Manufacturing, Changchun University of Science and Technology, Changchun, China
| | - Zuobin Wang
- International Research Centre for Nano Handling and Manufacturing of China, Changchun University of Science and Technology, Changchun, China.,Ministry of Education Key Laboratory for Cross-Scale Micro and Nano Manufacturing, Changchun University of Science and Technology, Changchun, China
| | - Xianping Liu
- School of Engineering, University of Warwick, Coventry, UK
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7
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Yang F, Wang J, Qu K, Wei H, Song Z, Xu H, Wang Z, Chen Y. Responses of INS-1 cells to glucose stimulation patterns. BIOMATERIALS ADVANCES 2023; 144:213199. [PMID: 36424275 DOI: 10.1016/j.bioadv.2022.213199] [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: 02/27/2022] [Revised: 10/30/2022] [Accepted: 11/13/2022] [Indexed: 06/16/2023]
Abstract
Diabetes has become a major public health problem in the world for many years, and it is driving us to probe into its complex mechanism of insulin secretion in pancreatic β cells. The nanoscale resolution characterization of pancreatic β cells in response to glucose led to insights into diverse mechanical and functional processes at the single cell level. Recent advances allowed the direct observations of cytoskeleton dynamics which were quantitatively determined. Here, we firstly performed the glucose stimulation with multiple physiologically relevant glucose patterns. Atomic force microscopy (AFM) produced high spatial resolution mechanical images together with the insulin secretions linking the physical interactions to the biochemical process of INS-1 cells. Altered material properties of the INS-1 cells revealed the regulation of multiple glucose stimulation patterns. Rapidly responded to high glucose (HG), INS-1 cells presented the unique meshing networks of elasticities. The decreases of Young's modulus (YM) and insulin secretion suggested that mechanical changes affected the insulin release. Furthermore, the frequency and gradient of glucose patterns induced nanomechanical and secreting changes of the INS-1 cells and gained the knowledge on the potential controllability of glucose. The relationships between the cellular mechanics and insulin secretion of INS-1 cells could contribute to establish a mechanical cell model for the study of β cells in diabetes. The results also indicated the cell mechanics as promising mechanical biomarkers for β cells, and promoted the understanding of specific mechanical mechanism of glucose regulation, which lighted on the further application of functional glucose regulation in therapy.
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Affiliation(s)
- Fan Yang
- International Research Centre for Nano Handling and Manufacturing of China, Changchun University of Science and Technology, Changchun 130022, China; Ministry of Education Key Laboratory for Cross-Scale Micro and Nano Manufacturing, Changchun University of Science and Technology, Changchun 130022, China; Jilin Provincial Key Laboratory for Multi-information Nano Detection & Handling of Single Cells, Changchun University of Science and Technology, Changchun 130022, China
| | - Jiajia Wang
- International Research Centre for Nano Handling and Manufacturing of China, Changchun University of Science and Technology, Changchun 130022, China; Ministry of Education Key Laboratory for Cross-Scale Micro and Nano Manufacturing, Changchun University of Science and Technology, Changchun 130022, China; Jilin Provincial Key Laboratory for Multi-information Nano Detection & Handling of Single Cells, Changchun University of Science and Technology, Changchun 130022, China
| | - Kaige Qu
- International Research Centre for Nano Handling and Manufacturing of China, Changchun University of Science and Technology, Changchun 130022, China; Ministry of Education Key Laboratory for Cross-Scale Micro and Nano Manufacturing, Changchun University of Science and Technology, Changchun 130022, China; Jilin Provincial Key Laboratory for Multi-information Nano Detection & Handling of Single Cells, Changchun University of Science and Technology, Changchun 130022, China
| | - Huimiao Wei
- Changli Nano Biotechnology Ltd, Changchun 130022, China
| | - Zhengxun Song
- International Research Centre for Nano Handling and Manufacturing of China, Changchun University of Science and Technology, Changchun 130022, China; Ministry of Education Key Laboratory for Cross-Scale Micro and Nano Manufacturing, Changchun University of Science and Technology, Changchun 130022, China; Jilin Provincial Key Laboratory for Multi-information Nano Detection & Handling of Single Cells, Changchun University of Science and Technology, Changchun 130022, China
| | - Hongmei Xu
- International Research Centre for Nano Handling and Manufacturing of China, Changchun University of Science and Technology, Changchun 130022, China; Ministry of Education Key Laboratory for Cross-Scale Micro and Nano Manufacturing, Changchun University of Science and Technology, Changchun 130022, China; Jilin Provincial Key Laboratory for Multi-information Nano Detection & Handling of Single Cells, Changchun University of Science and Technology, Changchun 130022, China
| | - Zuobin Wang
- International Research Centre for Nano Handling and Manufacturing of China, Changchun University of Science and Technology, Changchun 130022, China; Ministry of Education Key Laboratory for Cross-Scale Micro and Nano Manufacturing, Changchun University of Science and Technology, Changchun 130022, China; Jilin Provincial Key Laboratory for Multi-information Nano Detection & Handling of Single Cells, Changchun University of Science and Technology, Changchun 130022, China; JR3CN & IRAC, University of Bedfordshire, Luton LU1 3JU, UK.
| | - Yujuan Chen
- International Research Centre for Nano Handling and Manufacturing of China, Changchun University of Science and Technology, Changchun 130022, China; Ministry of Education Key Laboratory for Cross-Scale Micro and Nano Manufacturing, Changchun University of Science and Technology, Changchun 130022, China; Jilin Provincial Key Laboratory for Multi-information Nano Detection & Handling of Single Cells, Changchun University of Science and Technology, Changchun 130022, China.
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Takahashi S, Sekiya R, Haino T. Metal Nanoparticles on Lipophilic Nanographenes. Angew Chem Int Ed Engl 2022; 61:e202205514. [DOI: 10.1002/anie.202205514] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2022] [Indexed: 11/07/2022]
Affiliation(s)
- Shusaku Takahashi
- Department of Chemistry Graduate School of Advanced Science and Engineering Hiroshima University 1-3-1 Kagamiyama Higashi-Hiroshima Hiroshima, 739-8526 Japan
| | - Ryo Sekiya
- Department of Chemistry Graduate School of Advanced Science and Engineering Hiroshima University 1-3-1 Kagamiyama Higashi-Hiroshima Hiroshima, 739-8526 Japan
| | - Takeharu Haino
- Department of Chemistry Graduate School of Advanced Science and Engineering Hiroshima University 1-3-1 Kagamiyama Higashi-Hiroshima Hiroshima, 739-8526 Japan
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9
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An R, Laaksonen A, Wu M, Zhu Y, Shah FU, Lu X, Ji X. Atomic force microscopy probing interactions and microstructures of ionic liquids at solid surfaces. NANOSCALE 2022; 14:11098-11128. [PMID: 35876154 DOI: 10.1039/d2nr02812c] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Ionic liquids (ILs) are room temperature molten salts that possess preeminent physicochemical properties and have shown great potential in many applications. However, the use of ILs in surface-dependent processes, e.g. energy storage, is hindered by the lack of a systematic understanding of the IL interfacial microstructure. ILs on the solid surface display rich ordering, arising from coulombic, van der Waals, solvophobic interactions, etc., all giving near-surface ILs distinct microstructures. Therefore, it is highly important to clarify the interactions of ILs with solid surfaces at the nanoscale to understand the microstructure and mechanism, providing quantitative structure-property relationships. Atomic force microscopy (AFM) opens a surface-sensitive way to probe the interaction force of ILs with solid surfaces in the layers from sub-nanometers to micrometers. Herein, this review showcases the recent progress of AFM in probing interactions and microstructures of ILs at solid interfaces, and the influence of IL characteristics, surface properties and external stimuli is thereafter discussed. Finally, a summary and perspectives are established, in which, the necessities of the quantification of IL-solid interactions at the molecular level, the development of in situ techniques closely coupled with AFM for probing IL-solid interfaces, and the combination of experiments and simulations are argued.
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Affiliation(s)
- Rong An
- Herbert Gleiter Institute of Nanoscience, School of Materials Science and Engineering, Nanjing University of Science and Technology, Nanjing 210094, China.
| | - Aatto Laaksonen
- Energy Engineering, Division of Energy Science, Luleå University of Technology, 97187 Luleå, Sweden.
- Department of Materials and Environmental Chemistry, Arrhenius Laboratory, Stockholm University, SE-10691 Stockholm, Sweden
- Center of Advanced Research in Bionanoconjugates and Biopolymers, "Petru Poni" Institute of Macromolecular Chemistry, Iasi 700469, Romania
- State Key Laboratory of Materials-Oriented and Chemical Engineering, Nanjing Tech University, Nanjing 211816, China
| | - Muqiu Wu
- Herbert Gleiter Institute of Nanoscience, School of Materials Science and Engineering, Nanjing University of Science and Technology, Nanjing 210094, China.
| | - Yudan Zhu
- State Key Laboratory of Materials-Oriented and Chemical Engineering, Nanjing Tech University, Nanjing 211816, China
| | - Faiz Ullah Shah
- Chemistry of Interfaces, Luleå University of Technology, 97187 Luleå, Sweden
| | - Xiaohua Lu
- State Key Laboratory of Materials-Oriented and Chemical Engineering, Nanjing Tech University, Nanjing 211816, China
| | - Xiaoyan Ji
- Energy Engineering, Division of Energy Science, Luleå University of Technology, 97187 Luleå, Sweden.
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10
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Takahashi S, Sekiya R, Haino T. Metal Nanoparticles on Lipophilic Nanographenes. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202205514] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Shusaku Takahashi
- Hiroshima Daigaku Chemistry 1-3-1 Kagamiyama 739-8526 HIgashi-Hiroshima JAPAN
| | - Ryo Sekiya
- Hiroshima Daigaku - Higashihiroshima Campus: Hiroshima Daigaku Chemistry 1-3-1 Kagamiyama 739-8526 Higashi-Hiroshima JAPAN
| | - Takeharu Haino
- Hiroshima Daigaku - Higashihiroshima Campus: Hiroshima Daigaku Department of Chemistry 1-3-1 Kagamiyama 739-8526 Higashi-Hiroshima JAPAN
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11
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Lu Y, Xu Y, Zhang J, Zhang Q, Li L, Tian J. Adsorption of Carbon Dioxide Gas by Modified Graphene: A Theoretical Study. ChemistrySelect 2022. [DOI: 10.1002/slct.202104067] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Affiliation(s)
- Yunhua Lu
- School of Artificial Intelligence Chongqing University of Technology Chongqing 401135 China
| | - Yanjie Xu
- School of Artificial Intelligence Chongqing University of Technology Chongqing 401135 China
| | - Jun'an Zhang
- School of Artificial Intelligence Chongqing University of Technology Chongqing 401135 China
| | - Qingwei Zhang
- School of Artificial Intelligence Chongqing University of Technology Chongqing 401135 China
| | - Lei Li
- Key Laboratory of Extraordinary Bond Engineering and Advanced Materials Technology (EBEAM) of Chongqing Yangtze Normal University Chongqing 408100 China
| | - Jiangling Tian
- School of Artificial Intelligence Chongqing University of Technology Chongqing 401135 China
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12
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Huaicheng Z, Lei W, Bingjun Y, Na Q. Revealing Topography Evolution of Glass Surface under Air Pollution by Atomic Force Microscope. SCANNING 2021; 2021:6650020. [PMID: 33936356 PMCID: PMC8055424 DOI: 10.1155/2021/6650020] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/22/2020] [Revised: 03/02/2021] [Accepted: 03/24/2021] [Indexed: 06/12/2023]
Abstract
Air pollution has become a matter of close concern to people with the continuous development of human society. However, the knowledge of air pollution mechanisms remains insufficient, and there is a lack of evaluation methods for actual pollution. In this paper, air pollution in Internet cafe was studied by detecting surface topography of glass slides after different exposure time by an atomic force microscope (AFM). It is found that the adsorption of air pollutants on glass surface undergoes initial aggregation, particle growth and interparticle deposition, and final full coverage. The chemical composition of contaminated glass surface was further analyzed by an X-ray photoelectron spectrometer, showing that the pollution was mainly composed of hydrocarbons regardless of exposure time. Cleaning experiments show that NaHCO3 solution can be the most effective one with saponification reaction and hydrolysis to remove the adsorbed contaminations. This study provides an alternative way for investigating air pollution and a reference for cleaning polluted material surfaces.
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Affiliation(s)
- Zhou Huaicheng
- School of Mechanical Engineering, Southwest Jiaotong University, Chengdu 610031, China
| | - Wu Lei
- School of Mechanical Engineering, Southwest Jiaotong University, Chengdu 610031, China
| | - Yu Bingjun
- School of Mechanical Engineering, Southwest Jiaotong University, Chengdu 610031, China
| | - Qin Na
- School of Mechanical Engineering, Southwest Jiaotong University, Chengdu 610031, China
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13
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Liu H, Qin YN, Li HY, Gai LX, An QD, Zhai SR, Xiao ZY, Cui L. Promotional effect of embedded Ni NPs in alginate-based carbon toward Pd NPs efficiency for high-concentration p-nitrophenol reduction. Int J Biol Macromol 2021; 173:160-167. [PMID: 33482204 DOI: 10.1016/j.ijbiomac.2021.01.111] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2020] [Revised: 01/02/2021] [Accepted: 01/17/2021] [Indexed: 11/28/2022]
Abstract
Noble metal-based catalytic material with maximum utilization is of prime attraction for conserving rare metal resources. Herein, highly dispersion Ni nanoparticles (NPs)-modified N-doped mesoporous carbon material (Ni-N@C) was fabricated by pyrolysis of Ni2+/Histidine cross-linked alginate hydrogels. In a step forward, the obtained Ni-N@C nanocatalyst was treated by the solution of Pd2+, and tiny amount of Pd NPs were deposited on the surface of Ni via the reducibility of Ni to achieve the high dispersion of precious metals material. In the degradation of highly-concentration p-nitrophenol, the catalyst presents excellent performance which could completely degrade pollutants within a very short period. It was demonstrated that pre-embedded Ni NPs could not only increase the efficiency of Pd NPs but also endow the facile separation characteristic to the catalyst. Besides, the catalyst maintained favorable catalytic capacity even after five reaction cycles. In brief, this work may provide novel guidance for the maximum utilization of noble metal-modified mesoporous N-doped carbon-supported catalysts in practical applications of industrial and the treatment highly-concentration p-nitrophenol.
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Affiliation(s)
- Hao Liu
- Faculty of Light Industry and Chemical Engineering, Dalian Polytechnic University, Dalian 116034, China
| | - Ya-Nan Qin
- Faculty of Light Industry and Chemical Engineering, Dalian Polytechnic University, Dalian 116034, China
| | - Hao-Yu Li
- Faculty of Light Industry and Chemical Engineering, Dalian Polytechnic University, Dalian 116034, China
| | - Li-Xue Gai
- Faculty of Light Industry and Chemical Engineering, Dalian Polytechnic University, Dalian 116034, China
| | - Qing-da An
- Faculty of Light Industry and Chemical Engineering, Dalian Polytechnic University, Dalian 116034, China.
| | - Shang-Ru Zhai
- Faculty of Light Industry and Chemical Engineering, Dalian Polytechnic University, Dalian 116034, China.
| | - Zuo-Yi Xiao
- Faculty of Light Industry and Chemical Engineering, Dalian Polytechnic University, Dalian 116034, China.
| | - Li Cui
- Faculty of Light Industry and Chemical Engineering, Dalian Polytechnic University, Dalian 116034, China
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14
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Lin Z, Wang Z, Zhang X, Diao D. Superhydrophobic, photo-sterilize, and reusable mask based on graphene nanosheet-embedded carbon (GNEC) film. NANO RESEARCH 2021; 14:1110-1115. [PMID: 33250970 PMCID: PMC7685909 DOI: 10.1007/s12274-020-3158-1] [Citation(s) in RCA: 29] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/21/2020] [Revised: 09/29/2020] [Accepted: 10/04/2020] [Indexed: 05/19/2023]
Abstract
UNLABELLED The 2019 coronavirus disease (COVID-19) has affected more than 200 countries. Wearing masks can effectively cut off the virus spreading route since the coronavirus is mainly spreading by respiratory droplets. However, the common surgical masks cannot be reused, resulting in the increasing economic and resource consumption around the world. Herein, we report a superhydrophobic, photo-sterilize, and reusable mask based on graphene nanosheet-embedded carbon (GNEC) film, with high-density edges of standing structured graphene nanosheets. The GNEC mask exhibits an excellent hydrophobic ability (water contact angle: 157.9°) and an outstanding filtration efficiency with 100% bacterial filtration efficiency (BFE). In addition, the GNEC mask shows the prominent photo-sterilize performance, heating up to 110 °C quickly under the solar illumination. These high performances may facilitate the combat against the COVID-19 outbreaks, while the reusable masks help reducing the economic and resource consumption. ELECTRONIC SUPPLEMENTARY MATERIAL Supplementary material (further details of electron cyclotron resonance (ECR) sputtering system, deposition of GNEC film, fabrication of GNEC mask, and characterization of the GNEC mask) is available in the online version of this article at 10.1007/s12274-020-3158-1.
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Affiliation(s)
- Zezhou Lin
- Institute of Nanosurface Science and Engineering, Guangdong Provincial Key Laboratory of Micro/Nano Optomechatronics Engineering, Shenzhen University, Shenzhen, 518060 China
| | - Zheng Wang
- Shenzhen Anhio Medical Technology Co., Ltd, Shenzhen, 518110 China
| | - Xi Zhang
- Institute of Nanosurface Science and Engineering, Guangdong Provincial Key Laboratory of Micro/Nano Optomechatronics Engineering, Shenzhen University, Shenzhen, 518060 China
| | - Dongfeng Diao
- Institute of Nanosurface Science and Engineering, Guangdong Provincial Key Laboratory of Micro/Nano Optomechatronics Engineering, Shenzhen University, Shenzhen, 518060 China
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15
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Insights on the Excitation Spectrum of Graphene Contacted with a Pt Skin. NANOMATERIALS 2020; 10:nano10040703. [PMID: 32276378 PMCID: PMC7221714 DOI: 10.3390/nano10040703] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/01/2020] [Revised: 03/18/2020] [Accepted: 03/25/2020] [Indexed: 01/22/2023]
Abstract
The excitation spectrum in the region of the intraband (Dirac plasmon) and interband (π plasmon) plasmons in graphene/Pt-skin terminated Pt3Ni(111) is reproduced by using an ab-initio method and an empirical model. The results of both methods are compared with experimental data. We discover that metallic screening by the Pt layer converts the square-root dispersion of the Dirac plasmon into a linear acoustic-like plasmon dispersion. In the long-wavelength limit, the Pt d electron excitations completely quench the π plasmon in graphene at about 4.1 eV, that is replaced by a broad peak at about 6 eV. Owing to a rather large graphene/Pt-skin separation (≈3.3 Å), the graphene/Pt-skin hybridization becomes weak at larger wave vectors, so that the π plasmon is recovered with a dispersion as in a free-standing graphene.
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16
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Atomic force microscopy reveals how relative humidity impacts the Young’s modulus of lignocellulosic polymers and their adhesion with cellulose nanocrystals at the nanoscale. Int J Biol Macromol 2020; 147:1064-1075. [DOI: 10.1016/j.ijbiomac.2019.10.074] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2019] [Revised: 10/01/2019] [Accepted: 10/07/2019] [Indexed: 11/23/2022]
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17
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Chen G, Wang Y, Weng H, Wu Z, He K, Zhang P, Guo Z, Lin M. Selective Separation of Pd(II) on Pyridine-Functionalized Graphene Oxide Prepared by Radiation-Induced Simultaneous Grafting Polymerization and Reduction. ACS APPLIED MATERIALS & INTERFACES 2019; 11:24560-24570. [PMID: 31250630 DOI: 10.1021/acsami.9b06162] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
The recovery of precious metals like palladium (Pd) from secondary resources has enormous economic benefits and is in favor of resource reuse. In this work, we prepared a high efficiency pyridine-functionalized reduced graphene oxide (rGO) adsorbent for selective separation of Pd(II) from simulated electronic waste leachate, by one-pot γ-ray radiation-induced simultaneous grafting polymerization (RIGP) of 4-vinylpyridine (4VP) from graphene oxide (GO) and reduction of GO. The poly(4-vinylpyridine)-grafted reduced graphene oxide (rGO-g-P4VP) exhibits fast adsorption kinetics and high maximum adsorption capacity. The adsorption capacity is 105 mg g-1 in the first minute and reaches equilibrium within 120 min. The adsorption process follows the Langmuir model, from which the maximum adsorption capacity of Pd(II) is estimated to be 177 mg g-1. We also proved that the adsorption mechanism of Pd(II) on rGO-g-P4VP involves both ion exchange and coordination adsorption by XPS analysis. Most importantly, the loss of oxygen-containing groups due to reduction of GO not only facilitates the separation of adsorbent from aqueous solution but also reduces the electrostatic repulsion toward Pd(II)Cl42- in hydrochloric acid solution, leading to a higher adsorption selectivity of Pd(II) over some common metal cations in electronic waste including Fe(III), Cu(II), and Al(III) compared with poly(4-vinylpyridine)-grafted graphene oxide (GO-g-P4VP) prepared by atom transfer radical polymerization. Other precious metals like Pt(IV) and Au(III) can also be recovered easily and selectively by rGO-g-P4VP. This work demonstrates that rGO-g-P4VP prepared by the facile RIGP is a promising adsorbent for recovery of precious metals from secondary resources like electronic waste leachate.
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Affiliation(s)
- Geng Chen
- Department of Engineering and Applied Physics, School of Physical Sciences , University of Science and Technology of China , Hefei , Anhui 230026 , P.R. China
| | - Yi Wang
- Department of Engineering and Applied Physics, School of Physical Sciences , University of Science and Technology of China , Hefei , Anhui 230026 , P.R. China
| | - Hanqin Weng
- Department of Engineering and Applied Physics, School of Physical Sciences , University of Science and Technology of China , Hefei , Anhui 230026 , P.R. China
| | - Zhihao Wu
- Department of Engineering and Applied Physics, School of Physical Sciences , University of Science and Technology of China , Hefei , Anhui 230026 , P.R. China
| | - Kebao He
- Department of Engineering and Applied Physics, School of Physical Sciences , University of Science and Technology of China , Hefei , Anhui 230026 , P.R. China
| | - Peng Zhang
- Department of Engineering and Applied Physics, School of Physical Sciences , University of Science and Technology of China , Hefei , Anhui 230026 , P.R. China
| | - Zifang Guo
- Department of Engineering and Applied Physics, School of Physical Sciences , University of Science and Technology of China , Hefei , Anhui 230026 , P.R. China
| | - Mingzhang Lin
- Department of Engineering and Applied Physics, School of Physical Sciences , University of Science and Technology of China , Hefei , Anhui 230026 , P.R. China
- Institute of Nuclear Energy Safety Technology, Chinese Academy of Sciences , Hefei , Anhui 230031 , P.R. China
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18
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Hu J, Jiao J, Wang Y, Gao M, Lu Z, Yang F, Hu C, Song Z, Chen Y, Wang Z. Effect of extract from ginseng rust rot on the inhibition of human hepatocellular carcinoma cells in vitro. Micron 2019; 124:102710. [PMID: 31280008 DOI: 10.1016/j.micron.2019.102710] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2019] [Revised: 06/28/2019] [Accepted: 07/01/2019] [Indexed: 01/04/2023]
Abstract
Hepatocellular carcinoma (HCC) is one of major leading causes of cancer death worldwide. As a traditional medicine, the anti-cancer function of ginseng is being growingly recognized and investigated. However, the effect of ginseng rust rot on human HCC is unknown yet. In this study, the HCC cells were treated with different parts of mountain cultivated ginseng rust rot and compared with human normal liver cells. The morphology, survival rate and β-actin expression of the cells were changed by introducing the ginseng epidermis during the incubation process. Notably, the results reveal that the ginseng epidermis can induce apoptosis by altering the morphologies of cells, indicating the practical implication for the HCC treatment and drug development.
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Affiliation(s)
- Jing Hu
- Ministry of Education Key Laboratory for Cross-Scale Micro and Nano Manufacturing, Changchun University of Science and Technology, Changchun 130022, China; International Research Centre for Nano Handling and Manufacturing of China, Changchun University of Science and Technology, Changchun 130022, China
| | - Jie Jiao
- Ministry of Education Key Laboratory for Cross-Scale Micro and Nano Manufacturing, Changchun University of Science and Technology, Changchun 130022, China; International Research Centre for Nano Handling and Manufacturing of China, Changchun University of Science and Technology, Changchun 130022, China; School of Life Sciences, Changchun University of Science and Technology, Changchun 130022, China
| | - Ying Wang
- Ministry of Education Key Laboratory for Cross-Scale Micro and Nano Manufacturing, Changchun University of Science and Technology, Changchun 130022, China; International Research Centre for Nano Handling and Manufacturing of China, Changchun University of Science and Technology, Changchun 130022, China
| | - Mingyan Gao
- Ministry of Education Key Laboratory for Cross-Scale Micro and Nano Manufacturing, Changchun University of Science and Technology, Changchun 130022, China; International Research Centre for Nano Handling and Manufacturing of China, Changchun University of Science and Technology, Changchun 130022, China
| | - Zhengcheng Lu
- JR3CN & IRAC, University of Bedfordshire, Luton LU1 3JU, UK
| | - Fan Yang
- Ministry of Education Key Laboratory for Cross-Scale Micro and Nano Manufacturing, Changchun University of Science and Technology, Changchun 130022, China; International Research Centre for Nano Handling and Manufacturing of China, Changchun University of Science and Technology, Changchun 130022, China
| | - Cuihua Hu
- Ministry of Education Key Laboratory for Cross-Scale Micro and Nano Manufacturing, Changchun University of Science and Technology, Changchun 130022, China; International Research Centre for Nano Handling and Manufacturing of China, Changchun University of Science and Technology, Changchun 130022, China
| | - Zhengxun Song
- Ministry of Education Key Laboratory for Cross-Scale Micro and Nano Manufacturing, Changchun University of Science and Technology, Changchun 130022, China; International Research Centre for Nano Handling and Manufacturing of China, Changchun University of Science and Technology, Changchun 130022, China
| | - Yujuan Chen
- Ministry of Education Key Laboratory for Cross-Scale Micro and Nano Manufacturing, Changchun University of Science and Technology, Changchun 130022, China; International Research Centre for Nano Handling and Manufacturing of China, Changchun University of Science and Technology, Changchun 130022, China; School of Life Sciences, Changchun University of Science and Technology, Changchun 130022, China.
| | - Zuobin Wang
- Ministry of Education Key Laboratory for Cross-Scale Micro and Nano Manufacturing, Changchun University of Science and Technology, Changchun 130022, China; International Research Centre for Nano Handling and Manufacturing of China, Changchun University of Science and Technology, Changchun 130022, China; JR3CN & IRAC, University of Bedfordshire, Luton LU1 3JU, UK.
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19
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Semenova D, Gernaey KV, Silina YE. Exploring the potential of electroless and electroplated noble metal-semiconductor hybrids within bio- and environmental sensing. Analyst 2018; 143:5646-5669. [PMID: 30328420 DOI: 10.1039/c8an01632a] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
Over the last two decades, the rapid development and widespread application of nanomaterials has significantly influenced research in various fields, including analytical chemistry and biosensing technologies. In particular, the simple functionalization and tuning of noble metal nanoparticle (NP) surface chemistry resulted in the development of a series of novel biosensing platforms with quick read-out and enhanced capabilities towards specific analyte detection. Moreover, noble metal NPs possess a number of unique properties, viz. high surface-to-volume ratio and excellent spectral, optical, thermal, electrical and catalytic characteristics. This manuscript provides an elaborate review on galvanic noble metal NPs deposited onto semiconductor surfaces, from the preparation stage towards their application in biosensors and gas sensing. Two types of deposition approaches, viz. galvanic displacement/electroless and conventional electroplating, are introduced and compared. Furthermore, the analytical merit of hybrid nanomaterials towards the improvement of sensing abilities is highlighted. Finally, some limitations and challenges related to progress in the development and application of analytical devices based on electroless and electroplated noble metal NPs-semiconductor hybrids (NMNPsHs) in biochemical and environmental sensing are discussed.
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Affiliation(s)
- D Semenova
- Process and Systems Engineering Center (PROSYS), Department of Chemical and Biochemical Engineering, Technical University of Denmark, Søltofts Plads, Building 229, 2800 Kgs. Lyngby, Denmark
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20
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Chang X, Zhu L, Xue Q, Li X, Guo T, Li X, Ma M. Charge controlled switchable CO2/N2 separation for g-C10N9 membrane: Insights from molecular dynamics simulations. J CO2 UTIL 2018. [DOI: 10.1016/j.jcou.2018.05.017] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/16/2022]
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21
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Afrin R, Ganbaatar N, Aono M, Cleaves Ii HJ, Yano TA, Hara M. Size-Dependent Affinity of Glycine and Its Short Oligomers to Pyrite Surface: A Model for Prebiotic Accumulation of Amino Acid Oligomers on a Mineral Surface. Int J Mol Sci 2018; 19:ijms19020365. [PMID: 29370126 PMCID: PMC5855587 DOI: 10.3390/ijms19020365] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2017] [Revised: 12/23/2017] [Accepted: 12/23/2017] [Indexed: 11/16/2022] Open
Abstract
The interaction strength of progressively longer oligomers of glycine, (Gly), di-Gly, tri-Gly, and penta-Gly, with a natural pyrite surface was directly measured using the force mode of an atomic force microscope (AFM). In recent years, selective activation of abiotically formed amino acids on mineral surfaces, especially that of pyrite, has been proposed as an important step in many origins of life scenarios. To investigate such notions, we used AFM-based force measurements to probe possible non-covalent interactions between pyrite and amino acids, starting from the simplest amino acid, Gly. Although Gly itself interacted with the pyrite surface only weakly, progressively larger unbinding forces and binding frequencies were obtained using oligomers from di-Gly to penta-Gly. In addition to an expected increase of the configurational entropy and size-dependent van der Waals force, the increasing number of polar peptide bonds, among others, may be responsible for this observation. The effect of chain length was also investigated by performing similar experiments using l-lysine vs. poly-l-lysine (PLL), and l-glutamic acid vs. poly-l-glutamic acid. The results suggest that longer oligomers/polymers of amino acids can be preferentially adsorbed on pyrite surfaces.
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Affiliation(s)
- Rehana Afrin
- Chemical Evolution Lab Unit, Earth-Life Science Institute (ELSI), Tokyo Institute of Technology, 2-12-1-IE-1 Ookayama, Meguro-ku, Tokyo 152-8550, Japan.
| | - Narangerel Ganbaatar
- Chemical Evolution Lab Unit, Earth-Life Science Institute (ELSI), Tokyo Institute of Technology, 2-12-1-IE-1 Ookayama, Meguro-ku, Tokyo 152-8550, Japan.
- School of Materials and Chemical Technology, Tokyo Institute of Technology, 4259 Nagatsuta, Midori-ku, Yokohama 226-8502, Japan.
| | - Masashi Aono
- Chemical Evolution Lab Unit, Earth-Life Science Institute (ELSI), Tokyo Institute of Technology, 2-12-1-IE-1 Ookayama, Meguro-ku, Tokyo 152-8550, Japan.
- Faculty of Environment and Information Studies, Keio University, 5322 Endo, Fujisawa-shi, Kanagawa 252-0882, Japan.
| | - H James Cleaves Ii
- Chemical Evolution Lab Unit, Earth-Life Science Institute (ELSI), Tokyo Institute of Technology, 2-12-1-IE-1 Ookayama, Meguro-ku, Tokyo 152-8550, Japan.
| | - Taka-Aki Yano
- Chemical Evolution Lab Unit, Earth-Life Science Institute (ELSI), Tokyo Institute of Technology, 2-12-1-IE-1 Ookayama, Meguro-ku, Tokyo 152-8550, Japan.
- School of Materials and Chemical Technology, Tokyo Institute of Technology, 4259 Nagatsuta, Midori-ku, Yokohama 226-8502, Japan.
| | - Masahiko Hara
- Chemical Evolution Lab Unit, Earth-Life Science Institute (ELSI), Tokyo Institute of Technology, 2-12-1-IE-1 Ookayama, Meguro-ku, Tokyo 152-8550, Japan.
- School of Materials and Chemical Technology, Tokyo Institute of Technology, 4259 Nagatsuta, Midori-ku, Yokohama 226-8502, Japan.
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22
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Srivastava R. Theoretical studies of optoelectronic, magnetization and heat transport properties of conductive metal adatoms adsorbed on edge chlorinated nanographenes. RSC Adv 2018; 8:17723-17731. [PMID: 35542078 PMCID: PMC9080487 DOI: 10.1039/c8ra02032a] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2018] [Accepted: 04/23/2018] [Indexed: 12/29/2022] Open
Abstract
The electronic structures, magnetization and quantum transport properties of edge chlorinated nanographenes (Cl NGRs) (C1–C3) functionalized with conductive metal adatoms (Al, Au and Cu) has been investigated by means of density functional theory (DFT) with periodic boundary conditions and plane wave basis functions. The adsorption energy results depict weak chemisorption and strong physisorption for Au adsorption for C1, while C2 and C3 show strong chemisorption towards the studied metals. The role of dispersion forces has also been studied with an empirical classical model. The results show that the metal clusters avoid hollow sites on the Cl NGRs surface and favor atop and bond sites. The net magnetic moment of 0.73 μB is observed for the (Cl NGRs–metals) system and is in reasonable agreement with the previous calculations carried out on graphene nanoribbons. The TDDFT calculations predict that the absorption spectra for metal dimer–Cl NGRs lie in the visible region. The predictive electrical conductivity of these systems suggests that the metal adatoms play an important role in the transport properties of devices and can be used for thermoelectric applications. The electronic structures, magnetization and quantum transport properties of edge chlorinated nanographenes functionalized with conductive metal adatoms have been investigated by means of density functional theory with plane wave basis functions.![]()
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Affiliation(s)
- Ruby Srivastava
- Center for Molecular Modeling
- CSIR-Indian Institute of Chemical Technology
- Hyderabad-500607
- India
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23
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Wang C, Su Y, Zhao X, Tong S, Han X. MoS2
@HKUST-1 Flower-Like Nanohybrids for Efficient Hydrogen Evolution Reactions. Chemistry 2017; 24:1080-1087. [PMID: 29027272 DOI: 10.1002/chem.201704080] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2017] [Indexed: 11/06/2022]
Affiliation(s)
- Chengli Wang
- MIIT Key Laboratory of Critical Materials Technology for, New Energy Conversion and Storage; State Key Laboratory of, Urban Water Resource and Environment; School of Chemistry and Chemical Engineering; Harbin Institute of Technology; 92 West Da-Zhi Street Harbin 150001 China
| | - Yingchun Su
- MIIT Key Laboratory of Critical Materials Technology for, New Energy Conversion and Storage; State Key Laboratory of, Urban Water Resource and Environment; School of Chemistry and Chemical Engineering; Harbin Institute of Technology; 92 West Da-Zhi Street Harbin 150001 China
| | - Xiaole Zhao
- MIIT Key Laboratory of Critical Materials Technology for, New Energy Conversion and Storage; State Key Laboratory of, Urban Water Resource and Environment; School of Chemistry and Chemical Engineering; Harbin Institute of Technology; 92 West Da-Zhi Street Harbin 150001 China
| | - Shanshan Tong
- MIIT Key Laboratory of Critical Materials Technology for, New Energy Conversion and Storage; State Key Laboratory of, Urban Water Resource and Environment; School of Chemistry and Chemical Engineering; Harbin Institute of Technology; 92 West Da-Zhi Street Harbin 150001 China
- Shaanxi Key Laboratory of Natural Products and Chemical Biology; College of Chemistry and Pharmacy; Northwest A&F University; Yangling Shaanxi 712100 China
| | - Xiaojun Han
- MIIT Key Laboratory of Critical Materials Technology for, New Energy Conversion and Storage; State Key Laboratory of, Urban Water Resource and Environment; School of Chemistry and Chemical Engineering; Harbin Institute of Technology; 92 West Da-Zhi Street Harbin 150001 China
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24
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Liu J, Qu Y, Wang G, Wang X, Zhang W, Li J, Wang Z, Li D, Jiang J. Study of morphological and mechanical features of multinuclear and mononuclear SW480 cells by atomic force microscopy. Microsc Res Tech 2017; 81:3-12. [PMID: 28990709 DOI: 10.1002/jemt.22950] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2017] [Revised: 07/22/2017] [Accepted: 09/26/2017] [Indexed: 12/22/2022]
Abstract
This article studies the morphological and mechanical features of multinuclear and mononuclear SW480 colon cancer cells by atomic force microscopy to understand their drug-resistance. The SW480 cells were incubated with the fullerenol concentrations of 1 mg/ml and 2 mg/ml. Morphological and mechanical features including the height, length, width, roughness, adhesion force and Young's modulus of three multinuclear cell groups and three mononuclear cell groups were imaged and analyzed. It was observed that the features of multinuclear cancer cells and mononuclear cancer cells were significantly different after the treatment with fullerenol. The experiment results indicated that the mononuclear SW480 cells were more sensitive to fullerenol than the multinuclear SW480 cells, and the multinuclear SW480 cells exhibited a stronger drug-resistance than the mononuclear SW480 cells. This work provides a guideline for the treatments of multinuclear and mononuclear cancer cells with drugs.
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Affiliation(s)
- Jinyun Liu
- International Research Centre for Nano Handling and Manufacturing of China, Changchun University of Science and Technology, Changchun, 130022, China.,Institute for Research in Applicable Computing, University of Bedfordshire, Luton, LU1 3JU, United Kingdom
| | - Yingmin Qu
- International Research Centre for Nano Handling and Manufacturing of China, Changchun University of Science and Technology, Changchun, 130022, China
| | - Guoliang Wang
- International Research Centre for Nano Handling and Manufacturing of China, Changchun University of Science and Technology, Changchun, 130022, China
| | - Xinyue Wang
- International Research Centre for Nano Handling and Manufacturing of China, Changchun University of Science and Technology, Changchun, 130022, China
| | - Wenxiao Zhang
- International Research Centre for Nano Handling and Manufacturing of China, Changchun University of Science and Technology, Changchun, 130022, China
| | - Jingmei Li
- International Research Centre for Nano Handling and Manufacturing of China, Changchun University of Science and Technology, Changchun, 130022, China
| | - Zuobin Wang
- International Research Centre for Nano Handling and Manufacturing of China, Changchun University of Science and Technology, Changchun, 130022, China.,Institute for Research in Applicable Computing, University of Bedfordshire, Luton, LU1 3JU, United Kingdom
| | - Dayou Li
- International Research Centre for Nano Handling and Manufacturing of China, Changchun University of Science and Technology, Changchun, 130022, China.,Institute for Research in Applicable Computing, University of Bedfordshire, Luton, LU1 3JU, United Kingdom
| | - Jinlan Jiang
- Scientific Research Centre of China-Japan Union Hospital, Jilin University, Changchun, 130033, China
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25
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Enhancement of performance and stability of Graphene nano sheets supported cobalt catalyst in Fischer–Tropsch synthesis using Graphene functionalization. Chem Eng Res Des 2017. [DOI: 10.1016/j.cherd.2017.01.021] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Froning JP, Lazar P, Pykal M, Li Q, Dong M, Zbořil R, Otyepka M. Direct mapping of chemical oxidation of individual graphene sheets through dynamic force measurements at the nanoscale. NANOSCALE 2017; 9:119-127. [PMID: 27735008 PMCID: PMC5310523 DOI: 10.1039/c6nr05799c] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/22/2016] [Accepted: 09/26/2016] [Indexed: 05/30/2023]
Abstract
Graphene oxide is one of the most studied nanomaterials owing to its huge application potential in many fields, including biomedicine, sensing, drug delivery, optical and optoelectronic technologies. However, a detailed description of the chemical composition and the extent of oxidation in graphene oxide remains a key challenge affecting its applicability and further development of new applications. Here, we report direct monitoring of the chemical oxidation of an individual graphene flake during ultraviolet/ozone treatment through in situ atomic force microscopy based on dynamic force mapping. The results showed that graphene oxidation expanded from the graphene edges to the entire graphene surface. The interaction force mapping results correlated well with X-ray photoelectron spectroscopy data quantifying the degree of chemical oxidation. Density functional theory calculations confirmed the specific interaction forces measured between a silicon tip and graphene oxide. The developed methodology can be used as a simple protocol for evaluating the chemical functionalization of other two-dimensional materials with covalently attached functional groups.
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Affiliation(s)
- Jens P. Froning
- Regional Centre of Advanced Technologies and Materials (RCPTM) , Department of Physical Chemistry , Palacký University Olomouc , Olomouc 78371 , Czech Republic . ;
- Interdisciplinary Nanoscience Center (iNANO) , Aarhus University , Aarhus C 8000 , Denmark .
| | - Petr Lazar
- Regional Centre of Advanced Technologies and Materials (RCPTM) , Department of Physical Chemistry , Palacký University Olomouc , Olomouc 78371 , Czech Republic . ;
| | - Martin Pykal
- Regional Centre of Advanced Technologies and Materials (RCPTM) , Department of Physical Chemistry , Palacký University Olomouc , Olomouc 78371 , Czech Republic . ;
| | - Qiang Li
- Interdisciplinary Nanoscience Center (iNANO) , Aarhus University , Aarhus C 8000 , Denmark .
| | - Mingdong Dong
- Interdisciplinary Nanoscience Center (iNANO) , Aarhus University , Aarhus C 8000 , Denmark .
| | - Radek Zbořil
- Regional Centre of Advanced Technologies and Materials (RCPTM) , Department of Physical Chemistry , Palacký University Olomouc , Olomouc 78371 , Czech Republic . ;
| | - Michal Otyepka
- Regional Centre of Advanced Technologies and Materials (RCPTM) , Department of Physical Chemistry , Palacký University Olomouc , Olomouc 78371 , Czech Republic . ;
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Self-Assembly of Hydrofluorinated Janus Graphene Monolayer: A Versatile Route for Designing Novel Janus Nanoscrolls. Sci Rep 2016; 6:26914. [PMID: 27243752 PMCID: PMC4886628 DOI: 10.1038/srep26914] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2016] [Accepted: 05/11/2016] [Indexed: 11/24/2022] Open
Abstract
With remarkably interesting surface activities, two-dimensional Janus materials arouse intensive interests recently in many fields. We demonstrate by molecular dynamic simulations that hydrofluorinated Janus graphene (J-GN) can self-assemble into Janus nanoscroll (J-NS) at room temperature. The van der Waals (vdW) interaction and the coupling of C-H/π/C-F interaction and π/π interaction are proven to offer the continuous driving force of self-assembly of J-GN. The results show that J-GN can self-assemble into various J-NSs structures, including arcs, multi-wall J-NS and arm-chair-like J-NS by manipulating its original geometry (size and aspect ratio). Moreover, we also investigated self-assembly of hydrofluorinated J-GN and Fe nanowires (NWs), suggesting that Fe NW is a good alternative to activate J-GN to form J-NS. Differently, the strong vdW interaction between J-GN and Fe NW provides the main driving force of the self-assembly. Finally, we studied the hydrogen sorption over the formed J-NS with a considerable interlayer spacing, which reaches the US DOE target, indicating that J-NS is a promising candidate for hydrogen storage by controlling the temperature of system. Our theoretical results firstly provide a versatile route for designing novel J-NS from 2D Janus nanomaterials, which has a great potential application in the realm of hydrogen storage/separation.
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Theoretical study of chlordecone and surface groups interaction in an activated carbon model under acidic and neutral conditions. J Mol Graph Model 2016; 65:83-93. [PMID: 26945637 DOI: 10.1016/j.jmgm.2016.02.008] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2015] [Revised: 01/27/2016] [Accepted: 02/19/2016] [Indexed: 11/24/2022]
Abstract
Activated carbons (ACs) are widely used in the purification of drinking water without almost any knowledge about the adsorption mechanisms of the persistent organic pollutants. Chlordecone (CLD, Kepone) is an organochlorinated synthetic compound that has been used mainly as agricultural insecticide. CLD has been identified and listed as a persistent organic pollutant by the Stockholm Convention. The selection of the best suited AC for this type of contaminants is mainly an empirical and costly process. A theoretical study of the influence of AC surface groups (SGs) on CLD adsorption is done in order to help understanding the process. This may provide a first selection criteria for the preparation of AC with suitable surface properties. A model of AC consisting of a seven membered ring graphene sheet (coronene) with a functional group on the edge was used to evaluate the influence of the SGs over the adsorption. Multiple Minima Hypersurface methodology (MMH) coupled with PM7 semiempirical Hamiltonian was employed in order to study the interactions of the chlordecone with SGs (hydroxyl and carboxyl) at acidic and neutral pH and different hydration conditions. Selected structures were re-optimized using CAM-B3LYP to achieve a well-defined electron density to characterize the interactions by the Quantum Theory of Atoms in Molecules approach. The deprotonated form of surface carboxyl and hydroxyl groups of AC models show the strongest interactions, suggesting a chemical adsorption. An increase in carboxylic SGs content is proposed to enhance CLD adsorption onto AC at neutral pH conditions.
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30
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de Lara-Castells MP, Mitrushchenkov AO, Stoll H. Combining density functional and incremental post-Hartree-Fock approaches for van der Waals dominated adsorbate-surface interactions: Ag2/graphene. J Chem Phys 2015; 143:102804. [DOI: 10.1063/1.4919397] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023] Open
Affiliation(s)
| | - Alexander O. Mitrushchenkov
- Université Paris-Est, Laboratoire Modélisation et Simulation Multi Echelle, MSME UMR 8208 CNRS, 5 bd Descartes, 77454 Marne-la-Vallée, France
| | - Hermann Stoll
- Institut für Theoretische Chemie, Universität Stuttgart, D-70550 Stuttgart, Germany
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31
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Barry NPE, Pitto-Barry A, Tran J, Spencer SF, Johansen AM, Sanchez AM, Dove AP, O’Reilly RK, Deeth RJ, Beanland R, Sadler PJ. Osmium Atoms and Os2 Molecules Move Faster on Selenium-Doped Compared to Sulfur-Doped Boronic Graphenic Surfaces. CHEMISTRY OF MATERIALS : A PUBLICATION OF THE AMERICAN CHEMICAL SOCIETY 2015; 27:5100-5105. [PMID: 26525180 PMCID: PMC4613845 DOI: 10.1021/acs.chemmater.5b01853] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 05/18/2015] [Revised: 06/18/2015] [Indexed: 06/05/2023]
Abstract
We deposited Os atoms on S- and Se-doped boronic graphenic surfaces by electron bombardment of micelles containing 16e complexes [Os(p-cymene)(1,2-dicarba-closo-dodecarborane-1,2-diselenate/dithiolate)] encapsulated in a triblock copolymer. The surfaces were characterized by energy-dispersive X-ray (EDX) analysis and electron energy loss spectroscopy of energy filtered TEM (EFTEM). Os atoms moved ca. 26× faster on the B/Se surface compared to the B/S surface (233 ± 34 pm·s(-1) versus 8.9 ± 1.9 pm·s(-1)). Os atoms formed dimers with an average Os-Os distance of 0.284 ± 0.077 nm on the B/Se surface and 0.243 ± 0.059 nm on B/S, close to that in metallic Os. The Os2 molecules moved 0.83× and 0.65× more slowly than single Os atoms on B/S and B/Se surfaces, respectively, and again markedly faster (ca. 20×) on the B/Se surface (151 ± 45 pm·s(-1) versus 7.4 ± 2.8 pm·s(-1)). Os atom motion did not follow Brownian motion and appears to involve anchoring sites, probably S and Se atoms. The ability to control the atomic motion of metal atoms and molecules on surfaces has potential for exploitation in nanodevices of the future.
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Affiliation(s)
- Nicolas P. E. Barry
- Department of Chemistry, Department of Statistics, and Department of Physics, University of Warwick, Gibbet Hill Road, Coventry CV4 7AL, United Kingdom
| | - Anaïs Pitto-Barry
- Department of Chemistry, Department of Statistics, and Department of Physics, University of Warwick, Gibbet Hill Road, Coventry CV4 7AL, United Kingdom
| | - Johanna Tran
- Department of Chemistry, Department of Statistics, and Department of Physics, University of Warwick, Gibbet Hill Road, Coventry CV4 7AL, United Kingdom
| | - Simon
E. F. Spencer
- Department of Chemistry, Department of Statistics, and Department of Physics, University of Warwick, Gibbet Hill Road, Coventry CV4 7AL, United Kingdom
| | - Adam M. Johansen
- Department of Chemistry, Department of Statistics, and Department of Physics, University of Warwick, Gibbet Hill Road, Coventry CV4 7AL, United Kingdom
| | - Ana M. Sanchez
- Department of Chemistry, Department of Statistics, and Department of Physics, University of Warwick, Gibbet Hill Road, Coventry CV4 7AL, United Kingdom
| | - Andrew P. Dove
- Department of Chemistry, Department of Statistics, and Department of Physics, University of Warwick, Gibbet Hill Road, Coventry CV4 7AL, United Kingdom
| | - Rachel K. O’Reilly
- Department of Chemistry, Department of Statistics, and Department of Physics, University of Warwick, Gibbet Hill Road, Coventry CV4 7AL, United Kingdom
| | - Robert J. Deeth
- Department of Chemistry, Department of Statistics, and Department of Physics, University of Warwick, Gibbet Hill Road, Coventry CV4 7AL, United Kingdom
| | - Richard Beanland
- Department of Chemistry, Department of Statistics, and Department of Physics, University of Warwick, Gibbet Hill Road, Coventry CV4 7AL, United Kingdom
| | - Peter J. Sadler
- Department of Chemistry, Department of Statistics, and Department of Physics, University of Warwick, Gibbet Hill Road, Coventry CV4 7AL, United Kingdom
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32
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Interaction of paracetamol and 125I-paracetamol with surface groups of activated carbon: theoretical and experimental study. J Radioanal Nucl Chem 2015. [DOI: 10.1007/s10967-015-4022-8] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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33
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Hoekstra J, Beale AM, Soulimani F, Versluijs-Helder M, Geus JW, Jenneskens LW. Shell decoration of hydrothermally obtained colloidal carbon spheres with base metal nanoparticles. NEW J CHEM 2015. [DOI: 10.1039/c5nj00804b] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Carbothermal formation of first-row transition metal nanoparticles onto colloidal carbon supports from hydrothermal treatment of sucrose followed by catalytic graphitization.
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Affiliation(s)
- Jacco Hoekstra
- Organic Chemistry and Catalysis
- Debye Institute for Nanomaterials Science
- Utrecht University
- 3584 CA Utrecht
- The Netherlands
| | - Andrew M. Beale
- Inorganic Chemistry and Catalysis
- Debye Institute for Nanomaterials Science
- Utrecht University
- 3584 CA Utrecht
- The Netherlands
| | - Fouad Soulimani
- Inorganic Chemistry and Catalysis
- Debye Institute for Nanomaterials Science
- Utrecht University
- 3584 CA Utrecht
- The Netherlands
| | - Marjan Versluijs-Helder
- Inorganic Chemistry and Catalysis
- Debye Institute for Nanomaterials Science
- Utrecht University
- 3584 CA Utrecht
- The Netherlands
| | - John W. Geus
- Organic Chemistry and Catalysis
- Debye Institute for Nanomaterials Science
- Utrecht University
- 3584 CA Utrecht
- The Netherlands
| | - Leonardus W. Jenneskens
- Organic Chemistry and Catalysis
- Debye Institute for Nanomaterials Science
- Utrecht University
- 3584 CA Utrecht
- The Netherlands
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34
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Hussain MA, Mahadevi AS, Sastry GN. Estimating the binding ability of onium ions with CO2 and π systems: a computational investigation. Phys Chem Chem Phys 2015; 17:1763-75. [DOI: 10.1039/c4cp03434a] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
The impact of increasing methyl substitution on onium ions in their complexes with CO2 and aromatic systems has been analyzed using DFT calculations.
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Affiliation(s)
- M. Althaf Hussain
- Center for Molecular Modeling
- Indian Institute of Chemical Technology
- Hyderabad 500607
- India
| | - A. Subha Mahadevi
- Center for Molecular Modeling
- Indian Institute of Chemical Technology
- Hyderabad 500607
- India
| | - G. Narahari Sastry
- Center for Molecular Modeling
- Indian Institute of Chemical Technology
- Hyderabad 500607
- India
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35
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Yu SU, Park B, Cho Y, Hyun S, Kim JK, Kim KS. Simultaneous visualization of graphene grain boundaries and wrinkles with structural information by gold deposition. ACS NANO 2014; 8:8662-8668. [PMID: 25117455 DOI: 10.1021/nn503550d] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Although line defects such as grain boundaries (GBs) and wrinkles are unavoidable in graphene, difficulties in identification preclude studying their impact on electronic and mechanical properties. As previous methods focus on a single type of line defect, simultaneous measurements of both GBs and wrinkles with detailed structural information have not been reported. Here, we introduce effective visualization of both line defects by controlled gold deposition. Upon depositing gold on graphene, single lines and double lines of gold nanoparticles (NPs) are formed along GBs and wrinkles, respectively. Moreover, it is possible to analyze whether a GB is stitched or overlapped, whether a wrinkle is standing or folded, and the width of the standing collapsed wrinkle. Theoretical calculations show that the characteristic morphology of gold NPs is due to distinct binding energies of line defects, which are correlated to disrupting diffusion of NPs. Our approach could be further exploited to investigate the defect structures of other two-dimensional materials.
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36
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Zhang S, Aslan H, Besenbacher F, Dong M. Quantitative biomolecular imaging by dynamic nanomechanical mapping. Chem Soc Rev 2014; 43:7412-29. [DOI: 10.1039/c4cs00176a] [Citation(s) in RCA: 65] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
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37
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Xia D, Zhang S, Hjortdal JØ, Li Q, Thomsen K, Chevallier J, Besenbacher F, Dong M. Hydrated human corneal stroma revealed by quantitative dynamic atomic force microscopy at nanoscale. ACS NANO 2014; 8:6873-82. [PMID: 24833346 DOI: 10.1021/nn5015837] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
The structures and mechanical properties of human tissues are significantly influenced by water. The functionality of the human cornea can be linked to the hydrated collagen fibers. By applying quantitative dynamic atomic force microscopy to investigate morphological and mechanical property variations of corneal stroma under different hydration levels, we found that the collagen fibers in the stromal tissue show the specific periodicities and the stiffness of giga-Pa magnitude at 40% humidity. However, under increasing hydration, the collagen fibers clearly show nanoparticle structures along the fibers with the stiffness in mega-Pa magnitude. By increasing the hydration time, the stroma regains the fiber structure but with larger diameter. The age-dependency in stiffness was further investigated. The interplay of structures and nanomechanical mapping may be applied for the future diagnosis and assessment or even pathologic analysis.
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Affiliation(s)
- Dan Xia
- Interdisciplinary Nanoscience Center (iNANO), Centre for DNA Nanotechnology (CDNA), Aarhus University , 8000 Aarhus, Denmark
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38
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Alam R, Lightcap IV, Karwacki CJ, Kamat PV. Sense and shoot: simultaneous detection and degradation of low-level contaminants using graphene-based smart material assembly. ACS NANO 2014; 8:7272-8. [PMID: 24893206 DOI: 10.1021/nn502336x] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/13/2023]
Abstract
Smart material nanoassemblies that can simultaneously sense and shoot low-level contaminants from air and water are important for overcoming the threat of hazardous chemicals. Graphene oxide (GO) sheets deposited on mesoscopic TiO2 films that underpin the deposition of Ag nanoparticles with UV irradiation provide the foundation for the design of a smart material. The Ag particle size is readily controlled through precursor concentration and UV irradiation time. These semiconductor–graphene oxide–metal (SGM) films are SERS-active and hence capable of sensing aromatic contaminants such as 4-nitrobenzenethiol (4-NBT) in nanomolar range. Increased local concentration of organic molecules achieved through interaction with 2-D carbon support (GO) facilitates low-level detection of contaminants. Upon UV irradiation of 4-NBT-loaded SGM film, one can induce photocatalytic transformations. Thus, each component of the SGM film plays a pivotal role in aiding the detection and degradation of a contaminant dispersed in aqueous solutions. The advantage of using SGM films as multipurpose “detect and destroy” systems for nitroaromatic molecules is discussed.
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39
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Enriquez-Victorero C, Hernández-Valdés D, Montero-Alejo AL, Durimel A, Gaspard S, Jáuregui-Haza U. Theoretical study of γ-hexachlorocyclohexane and β-hexachlorocyclohexane isomers interaction with surface groups of activated carbon model. J Mol Graph Model 2014; 51:137-48. [PMID: 24907933 DOI: 10.1016/j.jmgm.2014.05.004] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2014] [Revised: 05/14/2014] [Accepted: 05/15/2014] [Indexed: 10/25/2022]
Abstract
Activated carbon (AC) is employed in drinking water purification without almost any knowledge about the adsorption mechanism of persistent organic pollutants (POPs) onto it. Hexachlorocyclohexane (HCH) is an organochlorinated contaminant present in water and soils of banana crops production zones of the Caribbean. The most relevant isomers of HCH are γ-HCH and β-HCH, both with great environmental persistence. A theoretical study of the influence of AC surface groups (SGs) on HCH adsorption is done in order to help to understand the process and may lead to improve the AC selection process. A simplified AC model consisting of naphthalene with a functional group was used to assess the influence of SGs over the adsorption process. The Multiple Minima Hypersurface (MMH) methodology was employed to study γ-HCH and β-HCH interactions with different AC SGs (hydroxyl and carboxyl) under different hydration and pH conditions. The results obtained showed that association of HCH with SGs preferentially occurs between the axial protons of HCH and SG's oxygen atom, and the most favorable interactions occurring with charged SGs. An increase in carboxylic SGs content is proposed to enhance HCH adsorption onto AC under neutral pH conditions. Finally, this work presents an inexpensive computer aided methodology for preselecting activated carbon SGs content for the removal of a given compound.
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Affiliation(s)
| | | | - Ana Lilian Montero-Alejo
- Laboratorio de Química Computacional y Teórica, Facultad de Química, Universidad de La Habana, 10400 La Habana, Cuba.
| | - Axelle Durimel
- Laboratoire COVACHIM M2E, EA 3592, Université des Antilles et de la Guyane, BP 250, 97157 Pointe à Pitre Cedex, Guadeloupe.
| | - Sarra Gaspard
- Laboratoire COVACHIM M2E, EA 3592, Université des Antilles et de la Guyane, BP 250, 97157 Pointe à Pitre Cedex, Guadeloupe.
| | - Ulises Jáuregui-Haza
- Instituto Superior de Tecnología y Ciencias Aplicadas, La Habana, A.P. 6163, Cuba.
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40
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Barry NPE, Pitto-Barry A, Sanchez AM, Dove AP, Procter RJ, Soldevila-Barreda JJ, Kirby N, Hands-Portman I, Smith CJ, O'Reilly RK, Beanland R, Sadler PJ. Fabrication of crystals from single metal atoms. Nat Commun 2014; 5:3851. [PMID: 24861089 PMCID: PMC4050283 DOI: 10.1038/ncomms4851] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2013] [Accepted: 04/10/2014] [Indexed: 11/16/2022] Open
Abstract
Metal nanocrystals offer new concepts for the design of nanodevices with a range of potential applications. Currently the formation of metal nanocrystals cannot be controlled at the level of individual atoms. Here we describe a new general method for the fabrication of multi-heteroatom-doped graphitic matrices decorated with very small, ångström-sized, three-dimensional (3D)-metal crystals of defined size. We irradiate boron-rich precious-metal-encapsulated self-spreading polymer micelles with electrons and produce, in real time, a doped graphitic support on which individual osmium atoms hop and migrate to form 3D-nanocrystals, as small as 15 Å in diameter, within 1 h. Crystal growth can be observed, quantified and controlled in real time. We also synthesize the first examples of mixed ruthenium–osmium 3D-nanocrystals. This technology not only allows the production of ångström-sized homo- and hetero-crystals, but also provides new experimental insight into the dynamics of nanocrystals and pathways for their assembly from single atoms. Metal nanocrystals are used in an ever growing list of applications, but precise control and understanding of their formation can be difficult. Here, the authors show a route that allows the controlled formation of metal nanocrystals to be carried out and observed at an atom-by-atom level.
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Affiliation(s)
- Nicolas P E Barry
- Department of Chemistry, University of Warwick, Gibbet Hill Road, Coventry CV4 7AL, UK
| | - Anaïs Pitto-Barry
- Department of Chemistry, University of Warwick, Gibbet Hill Road, Coventry CV4 7AL, UK
| | - Ana M Sanchez
- Department of Physics, University of Warwick, Gibbet Hill Road, Coventry CV4 7AL, UK
| | - Andrew P Dove
- Department of Chemistry, University of Warwick, Gibbet Hill Road, Coventry CV4 7AL, UK
| | - Richard J Procter
- Department of Chemistry, University of Warwick, Gibbet Hill Road, Coventry CV4 7AL, UK
| | | | - Nigel Kirby
- Australian Synchrotron, 800 Blackburn Road, Clayton, Victoria 3168, Australia
| | - Ian Hands-Portman
- School of Life Sciences, University of Warwick, Gibbet Hill Road, Coventry CV4 7AL, UK
| | - Corinne J Smith
- School of Life Sciences, University of Warwick, Gibbet Hill Road, Coventry CV4 7AL, UK
| | - Rachel K O'Reilly
- Department of Chemistry, University of Warwick, Gibbet Hill Road, Coventry CV4 7AL, UK
| | - Richard Beanland
- Department of Physics, University of Warwick, Gibbet Hill Road, Coventry CV4 7AL, UK
| | - Peter J Sadler
- Department of Chemistry, University of Warwick, Gibbet Hill Road, Coventry CV4 7AL, UK
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41
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Wen Z, Luo J, Zhu Y, Jiang Q. Cohesive-Energy-Resolved Bandgap of Nanoscale Graphene Derivatives. Chemphyschem 2014; 15:2563-8. [DOI: 10.1002/cphc.201402125] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2014] [Indexed: 11/09/2022]
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42
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Zhu Y, Lian J, Jiang Q. Role of Edge Geometry and Magnetic Interaction in Opening Bandgap of Low-Dimensional Graphene. Chemphyschem 2014; 15:958-65. [DOI: 10.1002/cphc.201301127] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2013] [Indexed: 11/08/2022]
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43
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Lazar P, Granatier J, Klimeš J, Hobza P, Otyepka M. The nature of bonding and electronic properties of graphene and benzene with iridium adatoms. Phys Chem Chem Phys 2014; 16:20818-27. [DOI: 10.1039/c4cp02608j] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The strong correlation effects contribute to the opening of the band gap in graphene covered with the Ir adatoms.
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Affiliation(s)
- Petr Lazar
- Regional Centre of Advanced Technologies and Materials
- Department of Physical Chemistry
- Faculty of Science
- Palacky University Olomouc
- 771 46 Olomouc, Czech Republic
| | - Jaroslav Granatier
- Institute of Organic Chemistry and Biochemistry
- Academy of Sciences of the Czech Republic
- 166 10 Prague 6, Czech Republic
- Institute of Physical Chemistry and Chemical Physics FCHPT
- Slovak University of Technology
| | - Jiří Klimeš
- University of Vienna
- Faculty of Physics and Center for Computational Materials Science
- A-1090 Vienna, Austria
| | - Pavel Hobza
- Institute of Organic Chemistry and Biochemistry
- Academy of Sciences of the Czech Republic
- 166 10 Prague 6, Czech Republic
| | - Michal Otyepka
- Regional Centre of Advanced Technologies and Materials
- Department of Physical Chemistry
- Faculty of Science
- Palacky University Olomouc
- 771 46 Olomouc, Czech Republic
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44
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Janthon P, Viñes F, Kozlov SM, Limtrakul J, Illas F. Theoretical assessment of graphene-metal contacts. J Chem Phys 2013; 138:244701. [DOI: 10.1063/1.4807855] [Citation(s) in RCA: 55] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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45
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Chen L, Hu Z, Liu L, Huang Y. A facile method to prepare multifunctional PBO fibers: simultaneously enhanced interfacial properties and UV resistance. RSC Adv 2013. [DOI: 10.1039/c3ra44876b] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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