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Qu T, Chang Q, You D, Huang M, Gong X, Wang J, Li B, Zheng G, Hu F, Zhong F, Gong C, Liu H. Fabrication of Adsorption-Type Hierarchical Functional Films by Using a Facile Swollen Based Breath Figure Method. Macromol Rapid Commun 2022; 43:e2200403. [PMID: 35926148 DOI: 10.1002/marc.202200403] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2022] [Revised: 07/08/2022] [Indexed: 11/11/2022]
Abstract
The morphology transition from primary to hierarchical adsorption-type microporous domains of amphiphilic block copolymer (BCP) honeycomb-structured films is demonstrated by a facile swollen based breath figure (BF) method. The characteristic parameters of poly(4-vinylpyridine)-block-polystyrene (P4VP-b-PS) hierarchical micro- and submicro-porous films can be controlled by changing the length of segments or subsequent swelling conditions. A plausible mechanism is demonstrated in this research. A typical amphiphilic BCP with very low volume content of hydrophilic blocks (fP4VP ≤ 0.050) can efficiently stabilize water droplets and inherently assist in the formation of morphology transition. This BCP film can be used for Cr(VI) removal from wastewater, which additionally has enormous potential application in the field of novel optical devices, soft lithography, size-selective separation, etc. This article is protected by copyright. All rights reserved.
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Affiliation(s)
- Ting Qu
- School of Chemistry and Materials Science, Hubei Engineering University, Xiaogan, Hubei, 432000, China
| | - Qicheng Chang
- School of Chemistry and Materials Science, Hubei Engineering University, Xiaogan, Hubei, 432000, China
| | - Dekang You
- School of Chemistry and Materials Science, Hubei Engineering University, Xiaogan, Hubei, 432000, China
| | - Man Huang
- School of Chemistry and Materials Science, Hubei Engineering University, Xiaogan, Hubei, 432000, China
| | - Xianyan Gong
- School of Chemistry and Materials Science, Hubei Engineering University, Xiaogan, Hubei, 432000, China
| | - Jie Wang
- School of Chemistry and Materials Science, Hubei Engineering University, Xiaogan, Hubei, 432000, China
| | - Bojie Li
- School of Chemistry and Materials Science, Hubei Engineering University, Xiaogan, Hubei, 432000, China
| | - Genwen Zheng
- School of Chemistry and Materials Science, Hubei Engineering University, Xiaogan, Hubei, 432000, China.,Hubei Engineering & Technology Research Center for Functional Materials from Biomass, Hubei Engineering University, Xiaogan, Hubei, 432000, China
| | - Fuqiang Hu
- School of Chemistry and Materials Science, Hubei Engineering University, Xiaogan, Hubei, 432000, China
| | - Fei Zhong
- School of Chemistry and Materials Science, Hubei Engineering University, Xiaogan, Hubei, 432000, China
| | - Chunli Gong
- School of Chemistry and Materials Science, Hubei Engineering University, Xiaogan, Hubei, 432000, China.,Hubei Engineering & Technology Research Center for Functional Materials from Biomass, Hubei Engineering University, Xiaogan, Hubei, 432000, China
| | - Hai Liu
- School of Chemistry and Materials Science, Hubei Engineering University, Xiaogan, Hubei, 432000, China.,Hubei Engineering & Technology Research Center for Functional Materials from Biomass, Hubei Engineering University, Xiaogan, Hubei, 432000, China
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Lopez de la Cruz R, Schilder N, Zhang X, Lohse D. Phase Separation of an Evaporating Ternary Solution in a Hele-Shaw Cell. Langmuir 2021; 37:10450-10460. [PMID: 34424709 PMCID: PMC8427745 DOI: 10.1021/acs.langmuir.1c01274] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/12/2021] [Revised: 08/10/2021] [Indexed: 06/13/2023]
Abstract
In the present work, we investigate the dynamic phenomena induced by solvent evaporation from ternary solutions confined in a Hele-Shaw cell. The model solutions consist of ethanol, water, and oil, and with the decrease in ethanol concentration by selective evaporation, they may undergo microdroplet formation via the ouzo effect or macroscopic liquid-liquid phase separation. We varied the initial concentration of the three components of the solutions. For all ternary solutions, evaporation of the good solvent ethanol from the gas-liquid interface, aligned with one side of the cell, leads to a Marangoni instability at the early stage of the evaporation process. The presence of the Marangoni instability is in agreement with our recent predictions based on linear stability analysis of binary systems. However, the location and onset of subsequent microdroplet formation and phase separation are the result of the interplay between the Marangoni instability and the initial composition of the ternary mixtures. We classified the ternary solutions into different groups according to the initial concentration of oil. For each group, based on the ternary diagram of the mixture, we offer a rationale for the way phase separation takes place and discuss how the instability influences droplet nucleation. Our work helps us to understand under what conditions and where droplet nucleation can take place when advection is present during phase separation inside a microfluidic device.
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Affiliation(s)
- Ricardo
Arturo Lopez de la Cruz
- Physics
of Fluids Group, Max-Planck-Center Twente for Complex Fluid Dynamics,
Mesa+ Institute, and J. M. Burgers Centre for Fluid Dynamics, Faculty
of Science and Technology, University of
Twente, P.O. Box 217, 7500 AE Enschede, The Netherlands
| | - Noor Schilder
- Physics
of Fluids Group, Max-Planck-Center Twente for Complex Fluid Dynamics,
Mesa+ Institute, and J. M. Burgers Centre for Fluid Dynamics, Faculty
of Science and Technology, University of
Twente, P.O. Box 217, 7500 AE Enschede, The Netherlands
| | - Xuehua Zhang
- Physics
of Fluids Group, Max-Planck-Center Twente for Complex Fluid Dynamics,
Mesa+ Institute, and J. M. Burgers Centre for Fluid Dynamics, Faculty
of Science and Technology, University of
Twente, P.O. Box 217, 7500 AE Enschede, The Netherlands
- Department
of Chemical and Materials Engineering, University
of Alberta, Edmonton, Alberta T6G 1H9, Canada
| | - Detlef Lohse
- Physics
of Fluids Group, Max-Planck-Center Twente for Complex Fluid Dynamics,
Mesa+ Institute, and J. M. Burgers Centre for Fluid Dynamics, Faculty
of Science and Technology, University of
Twente, P.O. Box 217, 7500 AE Enschede, The Netherlands
- Max
Planck Institute for Dynamics and Self-Organization, Am Faßberg 17, 37077 Göttingen, Germany
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Yang G, Lin W, Lai H, Tong J, Lei J, Yuan M, Zhang Y, Cui C. Understanding the relationship between particle size and ultrasonic treatment during the synthesis of metal nanoparticles. Ultrason Sonochem 2021; 73:105497. [PMID: 33677187 PMCID: PMC7941011 DOI: 10.1016/j.ultsonch.2021.105497] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/07/2020] [Revised: 02/02/2021] [Accepted: 02/15/2021] [Indexed: 05/03/2023]
Abstract
Ultrasonic treatment is an effective method for size refinement and dispersion of nanomaterials during their synthesis process. However, the quantitative relationship between ultrasonic conditions and particle size in the synthesis of metal nanoparticles has not been fully revealed. In this study, Cu nanoparticles were synthesized via the wet-chemical redox method under ultrasonic treatment, and statistical analysis on the evolution of particle size distribution was carried out. It was found that the particle size decreased exponentially with increasing ultrasonic power. A quantitative model was then proposed to describe the influence of ultrasonic power on the size distribution of metal nanoparticles from the perspective of the competition between the surface energy and the ultrasonic force. A relational expression of Rc∝γ47P-37 was revealed, and it was proved to fit well with the experimental results. Our study provides new experimental basis and theoretical method for understanding the mechanism of ultrasonic-induced size refinement of metal nanoparticles.
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Affiliation(s)
- Guannan Yang
- State Key Laboratory of Precision Electronic Manufacturing Technology and Equipment, Guangdong University of Technology, Guangzhou 510006, PR China; Jihua Laboratory, Foshan 528225, PR China
| | - Wei Lin
- State Key Laboratory of Precision Electronic Manufacturing Technology and Equipment, Guangdong University of Technology, Guangzhou 510006, PR China
| | - Haiqi Lai
- State Key Laboratory of Precision Electronic Manufacturing Technology and Equipment, Guangdong University of Technology, Guangzhou 510006, PR China
| | - Jin Tong
- State Key Laboratory of Precision Electronic Manufacturing Technology and Equipment, Guangdong University of Technology, Guangzhou 510006, PR China
| | - Junjun Lei
- State Key Laboratory of Precision Electronic Manufacturing Technology and Equipment, Guangdong University of Technology, Guangzhou 510006, PR China
| | - Maodan Yuan
- State Key Laboratory of Precision Electronic Manufacturing Technology and Equipment, Guangdong University of Technology, Guangzhou 510006, PR China
| | - Yu Zhang
- State Key Laboratory of Precision Electronic Manufacturing Technology and Equipment, Guangdong University of Technology, Guangzhou 510006, PR China; Jihua Laboratory, Foshan 528225, PR China.
| | - Chengqiang Cui
- State Key Laboratory of Precision Electronic Manufacturing Technology and Equipment, Guangdong University of Technology, Guangzhou 510006, PR China; Jihua Laboratory, Foshan 528225, PR China.
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